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Search results for: Ni-W-P alloy coating

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1422</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Ni-W-P alloy coating</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1182</span> The Study of Seed Coating Effects on Germination Speed of Astragalus Adscendens under Different Moisture Conditions and Planting Depth in the Boroujerd Region</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamidreza%20Mehrabi">Hamidreza Mehrabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mandana%20Rezayee"> Mandana Rezayee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The coated seed process is from amplifier ways that stick various materials on the outer surface of the seeds that minimize the negative environmental effects and increase the ability of Plant establishment. This study was done to assess the effects of coated seed on the germination speed of Astragalus adscendens in different conditions of drought stress and planting depth as it was conducted with a completely randomized factorial design with four replications. treatments of covering material was used in Four non coating levels (NC), mineral-based coating (CC), organic - based coating (OC) hydro gel-based coating (HC) ; treatment of moisture percent used in three levels of dried soil content, treatments of planting depth in two surfaces of planting and three times of the seed diameter was 9%, 14% and 21 % respectively. During the test, it was evaluated the germination speed attribute. The main results showed that moisture treatments and planting depth at a surface of 1% (P <0/01) was significant and has no significant effect of treatment materials. Also, In examining of the interaction between type of covering material and soil moisture were not observed significant differences for germination speed between covering treatments and controls covering, but there was a significant difference between treatments in 9% and 21%. Although in examining the triple interaction, increasing moisture and planting depth enhanced the speed of germination process, but it was not significant statistically, while it has made important differences in terms of description; because it had not growth in the moisture level of 9% and shallow cultivation (high stress). However, treatment of covered materials growth has developed significantly, so it can be useful in enhancing plant performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=seed%20coating" title="seed coating">seed coating</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20moisture" title=" soil moisture"> soil moisture</a>, <a href="https://publications.waset.org/abstracts/search?q=sowing%20depth" title=" sowing depth"> sowing depth</a>, <a href="https://publications.waset.org/abstracts/search?q=germination%20percentage" title=" germination percentage"> germination percentage</a> </p> <a href="https://publications.waset.org/abstracts/48322/the-study-of-seed-coating-effects-on-germination-speed-of-astragalus-adscendens-under-different-moisture-conditions-and-planting-depth-in-the-boroujerd-region" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48322.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">274</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1181</span> Developments and Implementation of Biomaterials in Textile Coating and Finishing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=David%20De%20Smet">David De Smet</a>, <a href="https://publications.waset.org/abstracts/search?q=Myriam%20Vanneste"> Myriam Vanneste</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There is a constant need for the improvement of materials applied in textile industries. Nowadays there is a tendency for “bio, eco, natural and environmental friendly” consciousness of the consumer resulting in various textile labels. Materials, totally based on CO2-neutral renewable resources (biopolymers), respond very well to this tendency. Proteins and PLA were evaluated as binders for textile coatings. Much attention is paid to the functionalization of textiles, therefore bio-additves are examined to introduce abrasion resistance, antimicrobial and flame retardant properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomaterial" title="biomaterial">biomaterial</a>, <a href="https://publications.waset.org/abstracts/search?q=textile" title=" textile"> textile</a>, <a href="https://publications.waset.org/abstracts/search?q=coating" title=" coating"> coating</a>, <a href="https://publications.waset.org/abstracts/search?q=finishing" title=" finishing"> finishing</a> </p> <a href="https://publications.waset.org/abstracts/26428/developments-and-implementation-of-biomaterials-in-textile-coating-and-finishing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26428.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">712</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1180</span> Formation of Protective Aluminum-Oxide Layer on the Surface of Fe-Cr-Al Sintered-Metal-Fibers via Multi-Stage Thermal Oxidation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Loai%20Ben%20Naji">Loai Ben Naji</a>, <a href="https://publications.waset.org/abstracts/search?q=Osama%20M.%20Ibrahim"> Osama M. Ibrahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Khaled%20J.%20Al-Fadhalah"> Khaled J. Al-Fadhalah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of this paper is to investigate the formation and adhesion of a protective aluminum-oxide (Al<sub>2</sub>O<sub>3</sub>, alumina) layer on the surface of Iron-Chromium-Aluminum Alloy (Fe-Cr-Al) sintered-metal-fibers. The oxide-scale layer was developed via multi-stage thermal oxidation at 930 <sup>o</sup>C for 1 hour, followed by 1 hour at 960 <sup>o</sup>C, and finally at 990 <sup>o</sup>C for 2 hours. Scanning Electron Microscope (SEM) images show that the multi-stage thermal oxidation resulted in the formation of predominantly Al<sub>2</sub>O<sub>3</sub> platelets-like and whiskers. SEM images also reveal non-uniform oxide-scale growth on the surface of the fibers. Furthermore, peeling/spalling of the alumina protective layer occurred after minimum handling, which indicates weak adhesion forces between the protective layer and the base metal alloy.&nbsp; Energy Dispersive Spectroscopy (EDS) analysis of the heat-treated Fe-Cr-Al sintered-metal-fibers confirmed the high aluminum content on the surface of the protective layer, and the low aluminum content on the exposed base metal alloy surface. In conclusion, the failure of the oxide-scale protective layer exposes the base metal alloy to further oxidation, and the fragile non-uniform oxide-scale is not suitable as a support for catalysts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high-temperature%20oxidation" title="high-temperature oxidation">high-temperature oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=iron-chromium-aluminum%20alloy" title=" iron-chromium-aluminum alloy"> iron-chromium-aluminum alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=alumina%20protective%20layer" title=" alumina protective layer"> alumina protective layer</a>, <a href="https://publications.waset.org/abstracts/search?q=sintered-metal-fibers" title=" sintered-metal-fibers"> sintered-metal-fibers</a> </p> <a href="https://publications.waset.org/abstracts/97290/formation-of-protective-aluminum-oxide-layer-on-the-surface-of-fe-cr-al-sintered-metal-fibers-via-multi-stage-thermal-oxidation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/97290.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">204</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1179</span> Sintering Properties of Mechanically Alloyed Ti-5Al-2.5Fe</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ridvan%20Yamanoglu">Ridvan Yamanoglu</a>, <a href="https://publications.waset.org/abstracts/search?q=Erdinc%20Efendi"> Erdinc Efendi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail%20Daoud"> Ismail Daoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, Ti-5Al-2.5Fe alloy was prepared by powder metallurgy. The elemental titanium, aluminum, and iron powders were mechanically alloyed for 10 h in a vacuum atmosphere. A stainless steel jar and stainless steel balls were used for mechanical alloying. The alloyed powders were then sintered by vacuum hot pressing at 950 &deg;C for a soaking time of 30 minutes. Pure titanium was also sintered at the same conditions for comparison of mechanical properties and microstructural behavior. The samples were investigated by scanning electron microscopy, XRD analysis, and optical microscopy. Results showed that, after mechanical alloying, a homogeneous distribution of the elements was obtained, and desired a-b structure was determined. Ti-5Al-2.5Fe alloy was successfully produced, and the alloy showed enhanced mechanical properties compared to the commercial pure titanium. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ti5Al-2.5Fe" title="Ti5Al-2.5Fe">Ti5Al-2.5Fe</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20alloying" title=" mechanical alloying"> mechanical alloying</a>, <a href="https://publications.waset.org/abstracts/search?q=hot%20pressing" title=" hot pressing"> hot pressing</a>, <a href="https://publications.waset.org/abstracts/search?q=sintering" title=" sintering"> sintering</a> </p> <a href="https://publications.waset.org/abstracts/68753/sintering-properties-of-mechanically-alloyed-ti-5al-25fe" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68753.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">280</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1178</span> Synthesis and Tribological Properties of the Al-Cr-N/MoS₂ Self-Lubricating Coatings by Hybrid Magnetron Sputtering</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tie-Gang%20Wang">Tie-Gang Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=De-Qiang%20Meng"> De-Qiang Meng</a>, <a href="https://publications.waset.org/abstracts/search?q=Yan-Mei%20Liu"> Yan-Mei Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ternary AlCrN coatings were widely used to prolong cutting tool life because of their high hardness and excellent abrasion resistance. However, the friction between the workpiece and cutter surface was increased remarkably during machining difficult-to-cut materials (such as superalloy, titanium, etc.). As a result, a lot of cutting heat was generated and cutting tool life was shortened. In this work, an appropriate amount of solid lubricant MoS₂ was added into the AlCrN coating to reduce the friction between the tool and the workpiece. A series of Al-Cr-N/MoS₂ self-lubricating coatings with different MoS₂ contents were prepared by high power impulse magnetron sputtering (HiPIMS) and pulsed direct current magnetron sputtering (Pulsed DC) compound system. The MoS₂ content in the coatings was changed by adjusting the sputtering power of the MoS₂ target. The composition, structure and mechanical properties of the Al-Cr-N/MoS2 coatings were systematically evaluated by energy dispersive spectrometer, scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffractometer, nano-indenter tester, scratch tester, and ball-on-disk tribometer. The results indicated the lubricant content played an important role in the coating properties. As the sputtering power of the MoS₂ target was 0.1 kW, the coating possessed the highest hardness 14.1GPa, the highest critical load 44.8 N, and the lowest wear rate 4.4×10−3μm2/N. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=self-lubricating%20coating" title="self-lubricating coating">self-lubricating coating</a>, <a href="https://publications.waset.org/abstracts/search?q=Al-Cr-N%2FMoS%E2%82%82%20coating" title=" Al-Cr-N/MoS₂ coating"> Al-Cr-N/MoS₂ coating</a>, <a href="https://publications.waset.org/abstracts/search?q=wear%20rate" title=" wear rate"> wear rate</a>, <a href="https://publications.waset.org/abstracts/search?q=friction%20coefficient" title=" friction coefficient"> friction coefficient</a> </p> <a href="https://publications.waset.org/abstracts/116546/synthesis-and-tribological-properties-of-the-al-cr-nmos2-self-lubricating-coatings-by-hybrid-magnetron-sputtering" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/116546.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">132</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1177</span> Evaluating Mechanical Properties of CoNiCrAlY Coating from Miniature Specimen Testing at Elevated Temperature</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=W.%20Wen">W. Wen</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Jackson"> G. Jackson</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Maskill"> S. Maskill</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20G.%20McCartney"> D. G. McCartney</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Sun"> W. Sun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> CoNiCrAlY alloys have been widely used as bond coats for thermal barrier coating (TBC) systems because of low cost, improved control of composition, and the feasibility to tailor the coatings microstructures. Coatings are in general very thin structures, and therefore it is impossible to characterize the mechanical responses of the materials via conventional mechanical testing methods. Due to this reason, miniature specimen testing methods, such as the small punch test technique, have been developed. This paper presents some of the recent research in evaluating the mechanical properties of the CoNiCrAlY coatings at room and high temperatures, through the use of small punch testing and the developed miniature specimen tensile testing, applicable to a range of temperature, to investigate the elastic-plastic and creep behavior as well as ductile-brittle transition temperature (DBTT) behavior. An inverse procedure was developed to derive the mechanical properties from such tests for the coating materials. A two-layer specimen test method is also described. The key findings include: 1) the temperature-dependent coating properties can be accurately determined by the miniature tensile testing within a wide range of temperature; 2) consistent DBTTs can be identified by both the SPT and miniature tensile tests (~ 650 &deg;C); and 3) the FE SPT modelling has shown good capability of simulating the early local cracking. In general, the temperature-dependent material behaviors of the CoNiCrAlY coating has been effectively characterized using miniature specimen testing and inverse method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=NiCoCrAlY%20coatings" title="NiCoCrAlY coatings">NiCoCrAlY coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=DBTT" title=" DBTT"> DBTT</a>, <a href="https://publications.waset.org/abstracts/search?q=miniature%20specimen%20testing" title=" miniature specimen testing"> miniature specimen testing</a> </p> <a href="https://publications.waset.org/abstracts/104223/evaluating-mechanical-properties-of-conicraly-coating-from-miniature-specimen-testing-at-elevated-temperature" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104223.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">169</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1176</span> Hot Deformability of Si-Steel Strips Containing Al</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Yousef">Mohamed Yousef</a>, <a href="https://publications.waset.org/abstracts/search?q=Magdy%20Samuel"> Magdy Samuel</a>, <a href="https://publications.waset.org/abstracts/search?q=Maha%20El-Meligy"> Maha El-Meligy</a>, <a href="https://publications.waset.org/abstracts/search?q=Taher%20El-Bitar"> Taher El-Bitar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present work is dealing with 2% Si-steel alloy. The alloy contains 0.05% C as well as 0.85% Al. The alloy under investigation would be used for electrical transformation purposes. A heating (expansion) - cooling (contraction) dilation investigation was executed to detect the a, a+g, and g transformation temperatures at the inflection points of the dilation curve. On heating, primary a &nbsp;was detected at a temperature range between room temperature and 687 <sup>o</sup>C. The domain of a+g was detected in the range between 687<sup> o</sup>C and 746<sup> o</sup>C. g phase exists in the closed g region at the range between 746<sup> o</sup>C and 1043 <sup>o</sup>C. The domain of a phase appears again at a temperature range between 1043 and 1105 <sup>o</sup>C, and followed by secondary a at temperature higher than 1105<sup> o</sup>C. A physical simulation of thermo-mechanical processing on the as-cast alloy was carried out. The simulation process took into consideration the hot flat rolling pilot plant parameters. The process was executed on the thermo-mechanical simulator (Gleeble 3500). The process was designed to include seven consecutive passes. The 1<sup>st</sup> pass represents the roughing stage, while the remaining six passes represent finish rolling stage. The whole process was executed at the temperature range from 1100<sup> o</sup>C to 900<sup> o</sup>C. The amount of strain starts with 23.5% at the roughing pass and decreases continuously to reach 7.5 % at the last finishing pass. The flow curve of the alloy can be abstracted from the stress-strain curves representing simulated passes. It shows alloy hardening from a pass to the other up to pass no. 6, as a result of decreasing the deformation temperature and increasing of cumulative strain. After pass no. 6, the deformation process enhances the dynamic recrystallization phenomena to appear, where the z-parameter would be high. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=si-%20steel" title="si- steel">si- steel</a>, <a href="https://publications.waset.org/abstracts/search?q=hot%20deformability" title=" hot deformability"> hot deformability</a>, <a href="https://publications.waset.org/abstracts/search?q=critical%20transformation%20temperature" title=" critical transformation temperature"> critical transformation temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=physical%20simulation" title=" physical simulation"> physical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=thermo-mechanical%20processing" title=" thermo-mechanical processing"> thermo-mechanical processing</a>, <a href="https://publications.waset.org/abstracts/search?q=flow%20curve" title=" flow curve"> flow curve</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20softening." title=" dynamic softening."> dynamic softening.</a> </p> <a href="https://publications.waset.org/abstracts/76819/hot-deformability-of-si-steel-strips-containing-al" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76819.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">245</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1175</span> Influence of the Growth Rate on Eutectic Microstructures and Physical Properties of Aluminum–Silicon-Cobalt Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aynur%20Aker">Aynur Aker</a>, <a href="https://publications.waset.org/abstracts/search?q=Hasan%20Kaya"> Hasan Kaya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Al-12.6wt.%Si-%2wt.Co alloy was prepared in a graphite crucible under vacuum atmosphere. The samples were directionally solidified upwards with different growth rate at constant temperature gradient using by Bridgman–type growth apparatus. The values of microstructures (λ) was measured from transverse sections of the samples. The microhardness (HV), ultimate tensile strength (σ) and electrical resistivity (ρ) of the directional solidification samples were also measured. Influence of the growth rate and spacings on microhardness, ultimate tensile strength and electrical resistivity were investigated and the relationships between them were experimentally obtained by using regression analysis. The results obtained in present work were compared with the previous similar experimental results obtained for binary and ternary alloys. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=directional%20solidification" title="directional solidification">directional solidification</a>, <a href="https://publications.waset.org/abstracts/search?q=Al-Si-Co%20alloy" title=" Al-Si-Co alloy"> Al-Si-Co alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20properties" title=" electrical properties"> electrical properties</a> </p> <a href="https://publications.waset.org/abstracts/9708/influence-of-the-growth-rate-on-eutectic-microstructures-and-physical-properties-of-aluminum-silicon-cobalt-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9708.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">289</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1174</span> Effects of Fe Addition and Process Parameters on the Wear and Corrosion Characteristics of Icosahedral Al-Cu-Fe Coatings on Ti-6Al-4V Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Olawale%20S.%20Fatoba">Olawale S. Fatoba</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephen%20A.%20Akinlabi"> Stephen A. Akinlabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Esther%20T.%20Akinlabi"> Esther T. Akinlabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Rezvan%20Gharehbaghi"> Rezvan Gharehbaghi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The performance of material surface under wear and corrosion environments cannot be fulfilled by the conventional surface modifications and coatings. Therefore, different industrial sectors need an alternative technique for enhanced surface properties. Titanium and its alloys possess poor tribological properties which limit their use in certain industries. This paper focuses on the effect of hybrid coatings Al-Cu-Fe on a grade five titanium alloy using laser metal deposition (LMD) process. Icosahedral Al-Cu-Fe as quasicrystals is a relatively new class of materials which exhibit unusual atomic structure and useful physical and chemical properties. A 3kW continuous wave ytterbium laser system (YLS) attached to a KUKA robot which controls the movement of the cladding process was utilized for the fabrication of the coatings. The titanium cladded surfaces were investigated for its hardness, corrosion and tribological behaviour at different laser processing conditions. The samples were cut to corrosion coupons, and immersed into 3.65% NaCl solution at 28oC using Electrochemical Impedance Spectroscopy (EIS) and Linear Polarization (LP) techniques. The cross-sectional view of the samples was analysed. It was found that the geometrical properties of the deposits such as width, height and the Heat Affected Zone (HAZ) of each sample remarkably increased with increasing laser power due to the laser-material interaction. It was observed that there are higher number of aluminum and titanium presented in the formation of the composite. The indentation testing reveals that for both scanning speed of 0.8 m/min and 1m/min, the mean hardness value decreases with increasing laser power. The low coefficient of friction, excellent wear resistance and high microhardness were attributed to the formation of hard intermetallic compounds (TiCu, Ti2Cu, Ti3Al, Al3Ti) produced through the in situ metallurgical reactions during the LMD process. The load-bearing capability of the substrate was improved due to the excellent wear resistance of the coatings. The cladded layer showed a uniform crack free surface due to optimized laser process parameters which led to the refinement of the coatings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Al-Cu-Fe%20coating" title="Al-Cu-Fe coating">Al-Cu-Fe coating</a>, <a href="https://publications.waset.org/abstracts/search?q=corrosion" title=" corrosion"> corrosion</a>, <a href="https://publications.waset.org/abstracts/search?q=intermetallics" title=" intermetallics"> intermetallics</a>, <a href="https://publications.waset.org/abstracts/search?q=laser%20metal%20deposition" title=" laser metal deposition"> laser metal deposition</a>, <a href="https://publications.waset.org/abstracts/search?q=Ti-6Al-4V%20alloy" title=" Ti-6Al-4V alloy"> Ti-6Al-4V alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=wear%20resistance" title=" wear resistance"> wear resistance</a> </p> <a href="https://publications.waset.org/abstracts/82571/effects-of-fe-addition-and-process-parameters-on-the-wear-and-corrosion-characteristics-of-icosahedral-al-cu-fe-coatings-on-ti-6al-4v-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82571.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">178</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1173</span> Surface Modification of Titanium Alloy with Laser Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nassier%20A.%20Nassir">Nassier A. Nassir</a>, <a href="https://publications.waset.org/abstracts/search?q=Robert%20Birch"> Robert Birch</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Rico%20Sierra"> D. Rico Sierra</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20P.%20Edwardson"> S. P. Edwardson</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Dearden"> G. Dearden</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhongwei%20Guan"> Zhongwei Guan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of laser surface treatment parameters on the residual strength of titanium alloy has been investigated. The influence of the laser surface treatment on the bonding strength between the titanium and poly-ether-ketone-ketone (PEKK) surfaces was also evaluated and compared to those offered by titanium foils without surface treatment to optimize the laser parameters. Material characterization using an optical microscope was carried out to study the microstructure and to measure the mean roughness value of the titanium surface. The results showed that the surface roughness shows a significant dependency on the laser power parameters in which surface roughness increases with the laser power increment. Moreover, the results of the tensile tests have shown that there is no significant dropping in tensile strength for the treated samples comparing to the virgin ones. In order to optimize the laser parameter as well as the corresponding surface roughness, single-lap shear tests were conducted on pairs of the laser treated titanium stripes. The results showed that the bonding shear strength between titanium alloy and PEKK film increased with the surface roughness increment to a specific limit. After this point, it is interesting to note that there was no significant effect for the laser parameter on the bonding strength. This evidence suggests that it is not necessary to use very high power of laser to treat titanium surface to achieve a good bonding strength between titanium alloy and the PEKK film. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bonding%20strength" title="bonding strength">bonding strength</a>, <a href="https://publications.waset.org/abstracts/search?q=laser%20surface%20treatment" title=" laser surface treatment"> laser surface treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=PEKK" title=" PEKK"> PEKK</a>, <a href="https://publications.waset.org/abstracts/search?q=poly-ether-ketone-ketone" title="poly-ether-ketone-ketone">poly-ether-ketone-ketone</a>, <a href="https://publications.waset.org/abstracts/search?q=titanium%20alloy" title=" titanium alloy"> titanium alloy</a> </p> <a href="https://publications.waset.org/abstracts/92507/surface-modification-of-titanium-alloy-with-laser-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92507.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">338</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1172</span> Effect of Thermal Aging on Low Cycle Fatigue of Alloy 690</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kushal%20Gowda%20Jayaram">Kushal Gowda Jayaram</a>, <a href="https://publications.waset.org/abstracts/search?q=Joseph%20Huret"> Joseph Huret</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Quibel"> Jonathan Quibel</a>, <a href="https://publications.waset.org/abstracts/search?q=Walter-John%20Chitty"> Walter-John Chitty</a>, <a href="https://publications.waset.org/abstracts/search?q=Gilbert%20Henaff"> Gilbert Henaff</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Thermal aging is one of the concerns for the long-term operation of nuclear power plants. Indeed, components in the primary circuit undergo thermal aging while exposed to the chemically active environment of Pressurized Water Reactors (PWRs) over time. Among the materials used in the reactor components, Alloy 690 can be found in some critical components for nuclear safety. Despite its importance, research on the effect of thermal aging on the microstructural changes and low cycle fatigue (LCF) behavior of Alloy 690 remains limited. This study aims to assess the impact of thermal aging on the fatigue life of Alloy 690. The as-received sample underwent aging at 420°C for 4000 hours, representing the equivalent aging of 60 years in reactor working conditions. First, the characterization of the area and density of intergranular and intragranular precipitates was performed to understand the microstructural changes in the aged specimen. Then, low cycle fatigue tests were conducted on the as received and aged samples at varying strain amplitudes. To investigate the influence of thermal aging on the fatigue behavior of Alloy 690, fracture surfaces were analyzed to estimate fatigue crack growth rates based on striation spacing measurements. Additionally, the axially cut fractured samples have undergone analysis using Electron Backscatter Diffraction (EBSD) to understand the effect of aging on strain localization near the crack path. Results indicate that while the characterization of the area and density of intergranular precipitates in the aged specimen (for 2000 hours, approximately 30 years) showed no significant changes, there was a slight increase in the area and density of intragranular precipitates under the same conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alloy%20690" title="alloy 690">alloy 690</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20aging" title=" thermal aging"> thermal aging</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20cycle%20fatigue" title=" low cycle fatigue"> low cycle fatigue</a>, <a href="https://publications.waset.org/abstracts/search?q=precipitates" title=" precipitates"> precipitates</a> </p> <a href="https://publications.waset.org/abstracts/185273/effect-of-thermal-aging-on-low-cycle-fatigue-of-alloy-690" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185273.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">40</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1171</span> Effect of Whey Protein Based Edible Coating on the Moisture Loss and Sensory Attributes of Fresh Mutton</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Saba%20Belgheisi">Saba Belgheisi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Food packaging, is an important discipline in the area of food technology, concerns preservation and protection of foods. The objective of this research was to determine of the effect of whey protein based edible coating on the moisture loss and sensory attributes of fresh mutton after 0, 1, 3 and 5 days at 5° C. The moisture content, moisture loss and sensory attributes (juiciness, color and odor) of the coated and uncoated samples were analyzed. The results showed that, moisture content, moisture loss, juiciness and color of the coated and uncoated samples have significant differences (p < 0.05) at the intervals of 0 to 1 and 1 to 3 days of storage. But no significant difference was observed at interval time 3 to 5 days of storage (p > 0.05). Also, there was no significant differences in the odor values of the coated and uncoated samples (p > 0.05). Therefore, the coated samples had consistently more moisture, juiciness and colored values than uncoated samples after 3 days at 5° C. So, whey protein edible coating could enhance product presentation and eliminate the need for placing absorbent pads at the bottom of the trays. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coating" title="coating">coating</a>, <a href="https://publications.waset.org/abstracts/search?q=whey%20protein" title=" whey protein"> whey protein</a>, <a href="https://publications.waset.org/abstracts/search?q=mutton" title=" mutton"> mutton</a>, <a href="https://publications.waset.org/abstracts/search?q=moisture" title=" moisture"> moisture</a>, <a href="https://publications.waset.org/abstracts/search?q=sensory" title=" sensory "> sensory </a> </p> <a href="https://publications.waset.org/abstracts/21747/effect-of-whey-protein-based-edible-coating-on-the-moisture-loss-and-sensory-attributes-of-fresh-mutton" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21747.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">461</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1170</span> The Effects of Microstructure of Directionally Solidified Al-Si-Fe Alloys on Micro Hardness, Tensile Strength, and Electrical Resistivity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sevda%20Engin">Sevda Engin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ugur%20Buyuk"> Ugur Buyuk</a>, <a href="https://publications.waset.org/abstracts/search?q=Necmettin%20Marasli"> Necmettin Marasli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Directional solidification of eutectic alloys attracts considerable attention because of microhardness, tensile strength, and electrical resistivity influenced by eutectic structures. In this research, we examined processing of Al–Si–Fe (Al–11.7wt.%Si–1wt.%Fe) eutectic by directional solidification. The alloy was prepared by vacuum furnace and directionally solidified in Bridgman-type equipment. During the directional solidification process, the growth rates utilized varied from 8.25 m/s to 164.80 m/s. The Al–Si–Fe system showed an eutectic transformation, which resulted in the matrix Al, Si and Al5SiFe plate phases. The eutectic spacing between (λ_Si-λ_Si, λ_(Al_5 SiFe)-λ_(Al_5 SiFe)) was measured. Additionally, the microhardness, tensile strength, and electrical resistivity of the alloy were determined using directionally solidified samples. The effects of growth rates on microhardness, tensile strength, and electrical resistivity for directionally solidified Al–Si–Fe eutectic alloy were investigated, and the relationships between them were experimentally obtained. It was found that the microhardness, tensile strength, and electrical resistivity were affected by both eutectic spacing and the solidification parameter. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=directional%20solidification" title="directional solidification">directional solidification</a>, <a href="https://publications.waset.org/abstracts/search?q=aluminum%20alloy" title=" aluminum alloy"> aluminum alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20properties" title=" electrical properties"> electrical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=tensile%20test" title=" tensile test"> tensile test</a>, <a href="https://publications.waset.org/abstracts/search?q=hardness%20test" title=" hardness test"> hardness test</a> </p> <a href="https://publications.waset.org/abstracts/45109/the-effects-of-microstructure-of-directionally-solidified-al-si-fe-alloys-on-micro-hardness-tensile-strength-and-electrical-resistivity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45109.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">295</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1169</span> Multivariate Simulations of the Process of Forming the Automotive Connector Forging from ZK60 Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anna%20Dziubinska">Anna Dziubinska</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The article presents the results of numerical simulations of the new forging process of the automotive connector forging from cast preform. The high-strength ZK60 alloy (belonging to the Mg-Zn-Zr group of Mg alloys) was selected for numerical tests. Currently, this part of the industry is produced by multi-stage forging consisting of operations: bending, preforming, and finishing. The use of the cast preform would enable forging this component in one operation. However, obtaining specific mechanical properties requires inducing a certain level of strain within the forged part. Therefore, the design of the preform, its shape, and volume are of paramount importance. In work presented in this article, preforms of different shapes were designed and assessed using Finite Element (FE) analysis. The research was funded by the Polish National Agency for Academic Exchange within the framework of the Bekker programme. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=automotive%20connector" title="automotive connector">automotive connector</a>, <a href="https://publications.waset.org/abstracts/search?q=forging" title=" forging"> forging</a>, <a href="https://publications.waset.org/abstracts/search?q=magnesium%20alloy" title=" magnesium alloy"> magnesium alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title=" numerical simulation"> numerical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=preform" title=" preform"> preform</a>, <a href="https://publications.waset.org/abstracts/search?q=ZK60" title=" ZK60"> ZK60</a> </p> <a href="https://publications.waset.org/abstracts/152381/multivariate-simulations-of-the-process-of-forming-the-automotive-connector-forging-from-zk60-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/152381.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">131</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1168</span> Coating of Cotton with Blend of Natural Rubber and Chloroprene Containing Ammonium Acetate for Producing Moisture Vapour Permeable Waterproof Fabric</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Debasish%20Das">Debasish Das</a>, <a href="https://publications.waset.org/abstracts/search?q=Mainak%20Mitra"> Mainak Mitra</a>, <a href="https://publications.waset.org/abstracts/search?q=A.Chaudhuri"> A.Chaudhuri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For the purpose of producing moisture vapor permeable waterproof cotton fabric to be used for protective apparel against rain, cotton fabric was coated with the blend of natural rubber and chloroprene rubber containing ammonium acetate as the water-soluble salt, employing a calendar coating technique. Rubber formulations also contained filler, homogenizer, and a typical sulphur curing system. Natural rubber and chloroprene blend in the blend ratio of 30: 70, containing 25 parts of sodium acetate per hundred parts of rubber was coated on the fabric. The coated fabric was vulcanized thereafter at 140oC for 3 h. Coated and vulcanized fabric was subsequently dipped in water for 45 min, followed by drying in air. Such set of treatments produced optimum results. Coated, vulcanized, washed and dried cotton fabric showed optimum developments in the property profiles in respect of waterproofness, breathability as revealed by moisture vapor transmission rate, coating adhesion, tensile properties, abrasion resistance, flex endurance and fire retardancy. Incorporation of highly water-soluble ammonium acetate salt in the coating formulation and their subsequent removal from vulcanized coated layer affected by post washing in consequent to dipping in the water-bath produced holes of only a few microns in the coating matrix of the fabric. Such microporous membrane formed on the cotton fabric allowed only transportation of moisture vapor through them, giving a moisture vapor transmission rate of 3734 g/m2/24h, while acting as a barrier for large liquid water droplet resisting 120cm of the water column in the hydrostatic water-head tester, rendering the coated cotton fabric waterproof. Examination of surface morphology of vulcanized coating by scanning electron microscopy supported the mechanism proposed for development of breathable waterproof layer on cotton fabric by the process employed above. Such process provides an easy and cost-effective route for achieving moisture vapor permeable waterproof cotton. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=moisture%20vapour%20permeability" title="moisture vapour permeability">moisture vapour permeability</a>, <a href="https://publications.waset.org/abstracts/search?q=waterproofness" title=" waterproofness"> waterproofness</a>, <a href="https://publications.waset.org/abstracts/search?q=chloroprene" title=" chloroprene"> chloroprene</a>, <a href="https://publications.waset.org/abstracts/search?q=calendar%20coating" title=" calendar coating"> calendar coating</a>, <a href="https://publications.waset.org/abstracts/search?q=coating%20adhesion" title=" coating adhesion"> coating adhesion</a>, <a href="https://publications.waset.org/abstracts/search?q=fire%20retardancy" title=" fire retardancy"> fire retardancy</a> </p> <a href="https://publications.waset.org/abstracts/91411/coating-of-cotton-with-blend-of-natural-rubber-and-chloroprene-containing-ammonium-acetate-for-producing-moisture-vapour-permeable-waterproof-fabric" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/91411.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">254</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1167</span> Effect of Modifiers (Sr/Sb) and Heat Treatment on the Microstructures and Wear Properties of Al-11Si-3Cu-0.5Mg Alloys</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sheng-Long%20Lee">Sheng-Long Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Tse-An%20Pan"> Tse-An Pan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, an optical microscope (OM), electron microscope (SEM), electrical conductivity meter (% IACS), hardness test, and wear test were subjected to analyze the microstructure of the wrought Al-11Si-3Cu-0.5Mg alloys. The effect of eutectic silicon morphology and alloy hardness on wear properties was investigated. The results showed that in the cast state, the morphology of eutectic silicon modified by strontium and antimony is lamellar and finer fibrous structure. After homogenization, the eutectic Si modified by Sr coarsened, and the eutectic Si modified by Sb refined due to fragmentation. The addition of modifiers, hot rolling, and solution aging treatment can control eutectic silicon morphology and hardness. The finer eutectic silicon and higher hardness have better wear resistance. During the wearing process, a protective oxide layer, also known as Mechanical Mixed Layer (MML), is formed on the surface of the alloy. The MML has higher stability and cracking resistance in Sr-modified alloys than in Sb-modified alloys. The study found that the wearing behavior of Al-11Si-3Cu-0.5Mg alloy was enhanced by the combination of adding Sr with lower solution time and T6 peak aging. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Al-Si-Cu-Mg%20alloy" title="Al-Si-Cu-Mg alloy">Al-Si-Cu-Mg alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=eutectic%20silicon" title=" eutectic silicon"> eutectic silicon</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20treatment" title=" heat treatment"> heat treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=wear%20property" title=" wear property"> wear property</a> </p> <a href="https://publications.waset.org/abstracts/162288/effect-of-modifiers-srsb-and-heat-treatment-on-the-microstructures-and-wear-properties-of-al-11si-3cu-05mg-alloys" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162288.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">79</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1166</span> Optimizing of the Micro EDM Parameters in Drilling of Titanium Ti-6Al-4V Alloy for Higher Machining Accuracy-Fuzzy Modelling</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20A.%20D.%20Sarhan">Ahmed A. D. Sarhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mum%20Wai%20Yip"> Mum Wai Yip</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Sayuti"> M. Sayuti</a>, <a href="https://publications.waset.org/abstracts/search?q=Lim%20Siew%20Fen"> Lim Siew Fen </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ti6Al4V alloy is highly used in the automotive and aerospace industry due to its good machining characteristics. Micro EDM drilling is commonly used to drill micro hole on extremely hard material with very high depth to diameter ratio. In this study, the parameters of micro-electrical discharge machining (EDM) in drilling of Ti6Al4V alloy is optimized for higher machining accuracy with less hole-dilation and hole taper ratio. The micro-EDM machining parameters includes, peak current and pulse on time. Fuzzy analysis was developed to evaluate the machining accuracy. The analysis shows that hole-dilation and hole-taper ratio are increased with the increasing of peak current and pulse on time. However, the surface quality deteriorates as the peak current and pulse on time increase. The combination that gives the optimum result for hole dilation is medium peak current and short pulse on time. Meanwhile, the optimum result for hole taper ratio is low peak current and short pulse on time. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Micro%20EDM" title="Micro EDM">Micro EDM</a>, <a href="https://publications.waset.org/abstracts/search?q=Ti-6Al-4V%20alloy" title=" Ti-6Al-4V alloy"> Ti-6Al-4V alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20logic%20based%20analysis" title=" fuzzy logic based analysis"> fuzzy logic based analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=machining%20accuracy" title=" machining accuracy"> machining accuracy</a> </p> <a href="https://publications.waset.org/abstracts/21772/optimizing-of-the-micro-edm-parameters-in-drilling-of-titanium-ti-6al-4v-alloy-for-higher-machining-accuracy-fuzzy-modelling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21772.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">496</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1165</span> Influence of Surface Preparation Effects on the Electrochemical Behavior of 2098-T351 Al–Cu–Li Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rejane%20Maria%20P.%20da%20Silva">Rejane Maria P. da Silva</a>, <a href="https://publications.waset.org/abstracts/search?q=Mariana%20X.%20Milagre"> Mariana X. Milagre</a>, <a href="https://publications.waset.org/abstracts/search?q=Jo%C3%A3o%20Victor%20de%20S.%20Araujo"> João Victor de S. Araujo</a>, <a href="https://publications.waset.org/abstracts/search?q=Leandro%20A.%20de%20Oliveira"> Leandro A. de Oliveira</a>, <a href="https://publications.waset.org/abstracts/search?q=Renato%20A.%20Antunes"> Renato A. Antunes</a>, <a href="https://publications.waset.org/abstracts/search?q=Isolda%20Costa"> Isolda Costa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Al-Cu-Li alloys are advanced materials for aerospace application because of their interesting mechanical properties and low density when compared with conventional Al-alloys. However, Al-Cu-Li alloys are susceptible to localized corrosion. The near-surface deformed layer (NSDL) induced by the rolling process during the production of the alloy and its removal by polishing can influence on the corrosion susceptibility of these alloys. In this work, the influence of surface preparation effects on the electrochemical activity of AA2098-T351 (Al–Cu–Li alloy) was investigated using a correlation between surface chemistry, microstructure, and electrochemical activity. Two conditions were investigated, polished and as-received surfaces of the alloy. The morphology of the two types of surfaces was investigated using confocal laser scanning microscopy (CLSM) and optical microscopy. The surface chemistry was analyzed by X-ray Photoelectron Spectroscopy (XPS) and energy dispersive X-ray spectroscopy (EDS). Global electrochemical techniques (potentiodynamic polarization and EIS technique) and a local electrochemical technique (Localized Electrochemical Impedance Spectroscopy-LEIS) were used to examine the electrochemical activity of the surfaces. The results obtained in this study showed that in the as-received surface, the near-surface deformed layer (NSDL), which is composed of Mg-rich bands, influenced the electrochemical behavior of the alloy. The results showed higher electrochemical activity to the polished surface condition compared to the as-received one. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Al-Cu-Li%20alloys" title="Al-Cu-Li alloys">Al-Cu-Li alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20preparation%20effects" title=" surface preparation effects"> surface preparation effects</a>, <a href="https://publications.waset.org/abstracts/search?q=electrochemical%20techniques" title=" electrochemical techniques"> electrochemical techniques</a>, <a href="https://publications.waset.org/abstracts/search?q=localized%20corrosion" title=" localized corrosion"> localized corrosion</a> </p> <a href="https://publications.waset.org/abstracts/110369/influence-of-surface-preparation-effects-on-the-electrochemical-behavior-of-2098-t351-al-cu-li-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/110369.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">159</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1164</span> Microstructure Dependent Fatigue Crack Growth in Aluminum Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20S.%20Nandana">M. S. Nandana</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Udaya%20Bhat"> K. Udaya Bhat</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20M.%20Manjunatha"> C. M. Manjunatha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study aluminum alloy 7010 was subjected to three different ageing treatments i.e., peak ageing (T6), over-ageing (T7451) and retrogression and re ageing (RRA) to study the influence of precipitate microstructure on the fatigue crack growth rate behavior. The microstructural modification was studied by using transmission electron microscope (TEM) to examine the change in the size and morphology of precipitates in the matrix and on the grain boundaries. The standard compact tension (CT) specimens were fabricated and tested under constant amplitude fatigue crack growth tests to evaluate the influence of heat treatment on the fatigue crack growth rate properties. The tests were performed in a computer-controlled servo-hydraulic test machine applying a load ratio, R = 0.1 at a loading frequency of 10 Hz as per ASTM E647. The fatigue crack growth was measured by adopting compliance technique using a CMOD gauge attached to the CT specimen. The average size of the matrix precipitates were found to be of 16-20 nm in T7451, 5-6 nm in RRA and 2-3 nm in T6 conditions respectively. The grain boundary precipitate which was continuous in T6, was disintegrated in RRA and T7451 condition. The PFZ width was lower in RRA compared to T7451 condition. The crack growth rate was higher in T7451 and lowest in RRA treated alloy. The RRA treated alloy also exhibits an increase in threshold stress intensity factor range (∆Kₜₕ). The ∆Kₜₕ measured was 11.1, 10.3 and 5.7 MPam¹/² in RRA, T6 and T7451 alloys respectively. The fatigue crack growth rate in RRA treated alloy was nearly 2-3 times lower than that in T6 and was one order lower than that observed in T7451 condition. The surface roughness of RRA treated alloy was more pronounced when compared to the other conditions. The reduction in fatigue crack growth rate in RRA alloy was majorly due to the increase in roughness and partially due to increase in spacing between the matrix precipitates. The reduction in crack growth rate and increase in threshold stress intensity range is expected to benefit the damage tolerant capability of aircraft structural components under service loads. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=damage%20tolerance" title="damage tolerance">damage tolerance</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue" title=" fatigue"> fatigue</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20treatment" title=" heat treatment"> heat treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=PFZ" title=" PFZ"> PFZ</a>, <a href="https://publications.waset.org/abstracts/search?q=RRA" title=" RRA"> RRA</a> </p> <a href="https://publications.waset.org/abstracts/100680/microstructure-dependent-fatigue-crack-growth-in-aluminum-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/100680.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">153</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1163</span> Solid Particle Erosion of Heat Treated TNB-V4 at Ambient and Elevated Temperatures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Naveed">Muhammad Naveed</a>, <a href="https://publications.waset.org/abstracts/search?q=Richard%20Stechow"> Richard Stechow</a>, <a href="https://publications.waset.org/abstracts/search?q=Sebastian%20Bolz"> Sebastian Bolz</a>, <a href="https://publications.waset.org/abstracts/search?q=Katharina%20Hobusch"> Katharina Hobusch</a>, <a href="https://publications.waset.org/abstracts/search?q=Sabine%20Wei%C3%9F"> Sabine Weiß</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Solid particle erosion has been identified as a critical wear phenomenon which takes place during operation of aeroengines in dusty environment. The present work discusses the erosion behavior of Ti-44.5Al-6.25Nb-0.8Mo-0.1B alloy (TNB-V4) which finds its application in low pressure gas turbines and can be used for high pressure compressors too. Prior to the erosion tests, the alloy was heat treated to improve the mechanical properties. Afterwards, specimens were eroded at impact angles of 30&deg; and 90&deg; at room and high temperatures (100 &deg;C-400 &deg;C). Volume loss and erosion behavior are studied through gravimetric analysis, whereas erosion mechanisms are characterized through scanning electron microscopy. The results indicate a clear difference in the erosion mechanism for different impact angles. The influence of the test temperature on the erosion behavior of the alloy is also discussed in the present contribution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solid%20particle%20erosion" title="solid particle erosion">solid particle erosion</a>, <a href="https://publications.waset.org/abstracts/search?q=gamma%20TiAl" title=" gamma TiAl"> gamma TiAl</a>, <a href="https://publications.waset.org/abstracts/search?q=TNB-V4" title=" TNB-V4"> TNB-V4</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20temperature%20erosion" title=" high temperature erosion"> high temperature erosion</a> </p> <a href="https://publications.waset.org/abstracts/49747/solid-particle-erosion-of-heat-treated-tnb-v4-at-ambient-and-elevated-temperatures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49747.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">353</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1162</span> Response of Post-harvest Treatments on Shelf Life, Biochemical and Microbial Quality of Banana Variety Red Banana</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Karishma%20Sebastian">Karishma Sebastian</a>, <a href="https://publications.waset.org/abstracts/search?q=Pavethra%20A."> Pavethra A.</a>, <a href="https://publications.waset.org/abstracts/search?q=Manjula%20B.%20S."> Manjula B. S.</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20N.%20Satheeshan"> K. N. Satheeshan</a>, <a href="https://publications.waset.org/abstracts/search?q=Jenita%20Thinakaran"> Jenita Thinakaran</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Red Banana is a popular variety of banana with strong market demand. Its ripe fruits are less resistant to transportation, complicating logistics. Moreover, as it is a climacteric fruit, its post-harvest shelf life is limited. The current study aimed to increase the postharvest shelf life of Red Banana fruits by adopting different postharvest treatments. Fruit bunches of Red Banana were harvested at the mature green stage, separated into hands, precooled, subjected to 12 treatments, and stored in Corrugated Fibre Board boxes till the end of shelf life under ambient conditions. Fruits coated with 10% bee wax + 0.5% clove oil (T₄), fruits subjected to coating with 10% bee wax and packaging with potassium permanganate (T₉), and fruits dipped in hot water at 50°C for 10 minutes and packaging with potassium permanganate (T₁₁) registered the highest shelf life of 18.67 days. The highest TSS of 26.33°Brix was noticed in fruits stored with potassium permanganate (T₈) after 12.67 days of storage, and lowest titratable acidity of 0.19%, and the highest sugar-acid ratio of 79.76 was noticed in control (T₁₂) after 11.33 days of storage. Moreover, the highest vitamin C content (7.74 mg 100 g⁻¹), total sugar content (18.47%), reducing sugar content (15.49%), total carotenoid content (24.13 µg 100 g-¹) was noticed in treatments T₇ (hot water dipping at 50 °C for 10 minutes) after 17.67 days, T₁₀ (coating with 40% aloe vera extract and packaged with potassium permanganate) after 13.33 days, T₄ (coating with 10% bee wax + 0.5% clove oil) after 18.67 days and T₉ (coating with 10% bee wax + potassium permanganate) after 18.67 days of storage respectively. Furthermore, the lowest fungal and bacterial counts were observed in treatments T₂ (dipping in 30ppm sodium hypochlorite solution), T₇ (hot water dipping at 50 °C for 10 minutes), T₉ (coating with 10% bee wax + potassium permanganate), and T₁₀ (coating with 40% aloe vera extract + potassium permanganate). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bee%20wax" title="bee wax">bee wax</a>, <a href="https://publications.waset.org/abstracts/search?q=post-harvest%20treatments" title=" post-harvest treatments"> post-harvest treatments</a>, <a href="https://publications.waset.org/abstracts/search?q=potassium%20permanganate" title=" potassium permanganate"> potassium permanganate</a>, <a href="https://publications.waset.org/abstracts/search?q=Red%20Banana" title=" Red Banana"> Red Banana</a>, <a href="https://publications.waset.org/abstracts/search?q=shelf%20life" title=" shelf life"> shelf life</a> </p> <a href="https://publications.waset.org/abstracts/183227/response-of-post-harvest-treatments-on-shelf-life-biochemical-and-microbial-quality-of-banana-variety-red-banana" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/183227.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">49</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1161</span> Enhancement of Mechanical Properties for Al-Mg-Si Alloy Using Equal Channel Angular Pressing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=W.%20H.%20El%20Garaihy">W. H. El Garaihy</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Nassef"> A. Nassef</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Samy"> S. Samy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Equal channel angular pressing (ECAP) of commercial Al-Mg-Si alloy was conducted using two strain rates. The ECAP processing was conducted at room temperature and at 250 °C. Route A was adopted up to a total number of four passes in the present work. Structural evolution of the aluminum alloy discs was investigated before and after ECAP processing using optical microscopy (OM). Following ECAP, simple compression tests and Vicker’s hardness were performed. OM micrographs showed that, the average grain size of the as-received Al-Mg-Si disc tends to be larger than the size of the ECAP processed discs. Moreover, significant difference in the grain morphologies of the as-received and processed discs was observed. Intensity of deformation was observed via the alignment of the Al-Mg-Si consolidated particles (grains) in the direction of shear, which increased with increasing the number of passes via ECAP. Increasing the number of passes up to 4 resulted in increasing the grains aspect ratio up to ~5. It was found that the pressing temperature has a significant influence on the microstructure, Hv-values, and compressive strength of the processed discs. Hardness measurements demonstrated that 1-pass resulted in increase of Hv-value by 42% compared to that of the as-received alloy. 4-passes of ECAP processing resulted in additional increase in the Hv-value. A similar trend was observed for the yield and compressive strength. Experimental data of the Hv-values demonstrated that there is a lack of any significant dependence on the processing strain rate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Al-Mg-Si%20alloy" title="Al-Mg-Si alloy">Al-Mg-Si alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=equal%20channel%20angular%20pressing" title=" equal channel angular pressing"> equal channel angular pressing</a>, <a href="https://publications.waset.org/abstracts/search?q=grain%20refinement" title=" grain refinement"> grain refinement</a>, <a href="https://publications.waset.org/abstracts/search?q=severe%20plastic%20deformation" title=" severe plastic deformation "> severe plastic deformation </a> </p> <a href="https://publications.waset.org/abstracts/23250/enhancement-of-mechanical-properties-for-al-mg-si-alloy-using-equal-channel-angular-pressing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23250.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">435</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1160</span> Modelling of Silicon Solar Cell with Anti-reflecting Coating</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ankita%20Gaur">Ankita Gaur</a>, <a href="https://publications.waset.org/abstracts/search?q=Mouli%20Karmakar"> Mouli Karmakar</a>, <a href="https://publications.waset.org/abstracts/search?q=Shyam"> Shyam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, a silicon solar cell has been modeled and analyzed to enhance its electrical performance by improving the optical properties using an antireflecting coating (ARC). The dynamic optical reflectance, transmittance along with the net transmissivity absorptivity product of each layer are assessed as per the diurnal variation of the angle of incidence using MATLAB 2019. The model is tested with various Anti-Reflective coatings and the performance has also been compared with uncoated cells. ARC improves the optical transmittance of the photon. Higher transmittance of ⁓96.57% with lowest reflectance of ⁓ 1.74% at 12.00 hours was obtained with MgF₂ coated silicon cells. The electrical efficiency of the configured solar cell was evaluated for a composite climate of New Delhi, India, for all weather conditions. The annual electricity generation for Anti-reflective coated and uncoated crystalline silicon PV Module was observed to be 103.14 KWh and 99.51 KWh, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antireflecting%20coating" title="antireflecting coating">antireflecting coating</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20efficiency" title=" electrical efficiency"> electrical efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=reflectance" title=" reflectance"> reflectance</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20cell" title=" solar cell"> solar cell</a>, <a href="https://publications.waset.org/abstracts/search?q=transmittance" title=" transmittance"> transmittance</a> </p> <a href="https://publications.waset.org/abstracts/146866/modelling-of-silicon-solar-cell-with-anti-reflecting-coating" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146866.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">153</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1159</span> Cellular Automata Modelling of Titanium Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jyoti%20Jha">Jyoti Jha</a>, <a href="https://publications.waset.org/abstracts/search?q=Asim%20Tewari"> Asim Tewari</a>, <a href="https://publications.waset.org/abstracts/search?q=Sushil%20Mishra"> Sushil Mishra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The alpha-beta Titanium alloy (Ti-6Al-4V) is the most common alloy in the aerospace industry. The hot workability of Ti–6Al–4V has been investigated by means of hot compression tests carried out in the 750–950 °C temperature range and 0.001–10s-1 strain rate range. Stress-strain plot obtained from the Gleeble 3800 test results show the dynamic recrystallization at temperature 950 °C. The effect of microstructural characteristics of the deformed specimens have been studied and correlated with the test temperature, total strain and strain rate. Finite element analysis in DEFORM 2D has been carried out to see the effect of flow stress parameters in different zones of deformed sample. Dynamic recrystallization simulation based on Cellular automata has been done in DEFORM 2D to simulate the effect of hardening and recovery during DRX. Simulated results well predict the grain growth and DRX in the deformed sample. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=compression%20test" title="compression test">compression test</a>, <a href="https://publications.waset.org/abstracts/search?q=Cellular%20automata" title=" Cellular automata"> Cellular automata</a>, <a href="https://publications.waset.org/abstracts/search?q=DEFORM" title=" DEFORM "> DEFORM </a>, <a href="https://publications.waset.org/abstracts/search?q=DRX" title=" DRX"> DRX</a> </p> <a href="https://publications.waset.org/abstracts/59613/cellular-automata-modelling-of-titanium-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59613.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">301</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1158</span> The Experimental and Statistical Analysis of the Wood Strength against Pressure According to Different Wood Types, Sizes, and Coatings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mustafa%20Altin">Mustafa Altin</a>, <a href="https://publications.waset.org/abstracts/search?q=Gamze%20Fahriye%20Pehlivan"> Gamze Fahriye Pehlivan</a>, <a href="https://publications.waset.org/abstracts/search?q=Sadiye%20Didem%20Boztepe%20Erkis"> Sadiye Didem Boztepe Erkis</a>, <a href="https://publications.waset.org/abstracts/search?q=Sakir%20Tasdemir"> Sakir Tasdemir</a>, <a href="https://publications.waset.org/abstracts/search?q=Sevda%20Altin"> Sevda Altin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, an experimental study was executed related to the strength of wooden materials which have been commonly used both in the past and present against pressure and whether fire retardant materials used against fire have any effects or not. Totally, 81 samples which included three different wood species, three different sizes, two different fire retardants and two unprocessed samples were prepared. Compressive pressure tests were applied to the prepared samples, their variance analyses were executed in accordance with the obtained results and it was aimed to determine the most convenient wooden materials and fire-retardant coating material. It was also determined that the species of wood and the species of coating caused the decrease and/or increase in the resistance against pressure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=resistance%20of%20wood%20against%20pressure" title="resistance of wood against pressure">resistance of wood against pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=species%20of%20wood" title=" species of wood"> species of wood</a>, <a href="https://publications.waset.org/abstracts/search?q=variance%20analysis" title=" variance analysis"> variance analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=wood%20coating" title=" wood coating"> wood coating</a>, <a href="https://publications.waset.org/abstracts/search?q=wood%20fire%20safety" title=" wood fire safety"> wood fire safety</a> </p> <a href="https://publications.waset.org/abstracts/19264/the-experimental-and-statistical-analysis-of-the-wood-strength-against-pressure-according-to-different-wood-types-sizes-and-coatings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19264.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">431</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1157</span> Morphological and Chemical Characterization of the Surface of Orthopedic Implant Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bertalan%20Jillek">Bertalan Jillek</a>, <a href="https://publications.waset.org/abstracts/search?q=P%C3%A9ter%20Szab%C3%B3"> Péter Szabó</a>, <a href="https://publications.waset.org/abstracts/search?q=Judit%20Kopniczky"> Judit Kopniczky</a>, <a href="https://publications.waset.org/abstracts/search?q=Istv%C3%A1n%20Szab%C3%B3"> István Szabó</a>, <a href="https://publications.waset.org/abstracts/search?q=Bal%C3%A1zs%20Patczai"> Balázs Patczai</a>, <a href="https://publications.waset.org/abstracts/search?q=Kinga%20Turz%C3%B3"> Kinga Turzó</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hip and knee prostheses are one of the most frequently used medical implants, that can significantly improve patients’ quality of life. Long term success and biointegration of these prostheses depend on several factors, like bulk and surface characteristics, construction and biocompatibility of the material. The applied surgical technique, the general health condition and life-quality of the patient are also determinant factors. Medical devices used in orthopedic surgeries have different surfaces depending on their function inside the human body. Surface roughness of these implants determines the interaction with the surrounding tissues. Numerous modifications have been applied in the recent decades to improve a specific property of an implant. Our goal was to compare the surface characteristics of typical implant materials used in orthopedic surgery and traumatology. Morphological and chemical structure of Vortex plate anodized titanium, cemented THR (total hip replacement) stem high nitrogen REX steel (SS), uncemented THR stem and cup titanium (Ti) alloy with titanium plasma spray coating (TPS), cemented cup and uncemented acetabular liner HXL and UHMWPE and TKR (total knee replacement) femoral component CoCrMo alloy (Sanatmetal Ltd, Hungary) discs were examined. Visualization and elemental analysis were made by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Surface roughness was determined by atomic force microscopy (AFM) and profilometry. SEM and AFM revealed the morphological and roughness features of the examined materials. TPS Ti presented the highest Ra value (25 ± 2 μm, followed by CoCrMo alloy (535 ± 19 nm), Ti (227 ± 15 nm) and stainless steel (170 ± 11 nm). The roughness of the HXL and UHMWPE surfaces was in the same range, 147 ± 13 nm and 144 ± 15 nm, respectively. EDS confirmed typical elements on the investigated prosthesis materials: Vortex plate Ti (Ti, O, P); TPS Ti (Ti, O, Al); SS (Fe, Cr, Ni, C) CoCrMo (Co, Cr, Mo), HXL (C, Al, Ni) and UHMWPE (C, Al). The results indicate that the surface of prosthesis materials have significantly different features and the applied investigation methods are suitable for their characterization. Contact angle measurements and in vitro cell culture testing are further planned to test their surface energy characteristics and biocompatibility. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=morphology" title="morphology">morphology</a>, <a href="https://publications.waset.org/abstracts/search?q=PE" title=" PE"> PE</a>, <a href="https://publications.waset.org/abstracts/search?q=roughness" title=" roughness"> roughness</a>, <a href="https://publications.waset.org/abstracts/search?q=titanium" title=" titanium"> titanium</a> </p> <a href="https://publications.waset.org/abstracts/153179/morphological-and-chemical-characterization-of-the-surface-of-orthopedic-implant-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/153179.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">126</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1156</span> Self-Assembly of Monodisperse Oleic Acid-Capped Superparamagnetic Iron Oxide Nanoparticles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Huseyin%20Kavas">Huseyin Kavas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Oleic acid (OA) capped superparamagnetic iron oxide nanoparticles (SPION) were synthesized by a thermal decomposition method. The composition of nanoparticles was confirmed by X-ray powder diffraction, and the morphology of particles was investigated by Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), and Transmission electron microscopy (TEM). The crystalline and particle size distribution of SPIONS capped with OA were investigated with a mean size of 6.99 nm and 8.9 nm, respectively. It was found that SPIONS have superparamagnetic characteristics with a saturation magnetization value of 64 emu/g. The thin film form of self-assembled SPIONS was fabricated by coating techniques of spin coating and dip coating. SQUID-VSM magnetometer and FMR techniques were performed in order to evaluate the magnetic properties of thin films, especially the existence of magnetic anisotropy. The thin films with magnetic anisotropy were obtained by self-assembled monolayers of SPION. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=magnetic%20materials" title="magnetic materials">magnetic materials</a>, <a href="https://publications.waset.org/abstracts/search?q=nanostructures" title=" nanostructures"> nanostructures</a>, <a href="https://publications.waset.org/abstracts/search?q=self-assembly" title=" self-assembly"> self-assembly</a>, <a href="https://publications.waset.org/abstracts/search?q=FMR" title=" FMR"> FMR</a> </p> <a href="https://publications.waset.org/abstracts/158967/self-assembly-of-monodisperse-oleic-acid-capped-superparamagnetic-iron-oxide-nanoparticles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158967.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">107</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1155</span> Computational Study and Wear Prediction of Steam Turbine Blade with Titanium-Nitride Coating Deposited by Physical Vapor Deposition Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Karuna%20Tuchinda">Karuna Tuchinda</a>, <a href="https://publications.waset.org/abstracts/search?q=Sasithon%20Bland"> Sasithon Bland</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work investigates the wear of a steam turbine blade coated with titanium nitride (TiN), and compares to the wear of uncoated blades. The coating is deposited on by physical vapor deposition (PVD) method. The working conditions of the blade were simulated and surface temperature and pressure values as well as flow velocity and flow direction were obtained. This data was used in the finite element wear model developed here in order to predict the wear of the blade. The wear mechanisms considered are erosive wear due to particle impingement and fluid jet, and fatigue wear due to repeated impingement of particles and fluid jet. Results show that the life of the TiN-coated blade is approximately 1.76 times longer than the life of the uncoated one. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=physical%20vapour%20deposition" title="physical vapour deposition">physical vapour deposition</a>, <a href="https://publications.waset.org/abstracts/search?q=steam%20turbine%20blade" title=" steam turbine blade"> steam turbine blade</a>, <a href="https://publications.waset.org/abstracts/search?q=titanium-based%20coating" title=" titanium-based coating"> titanium-based coating</a>, <a href="https://publications.waset.org/abstracts/search?q=wear%20prediction" title=" wear prediction"> wear prediction</a> </p> <a href="https://publications.waset.org/abstracts/8420/computational-study-and-wear-prediction-of-steam-turbine-blade-with-titanium-nitride-coating-deposited-by-physical-vapor-deposition-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8420.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">373</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1154</span> Structural and Electronic Properties of Cd0.75V0.25S Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Baltache">H. Baltache</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20El%20Amine.%20Monir"> M. El Amine. Monir</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Khenata"> R. Khenata</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Rached"> D. Rached</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Seddik"> T. Seddik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The first principles calculations based on the density functional theory (DFT) by using the full-potential linearized augmented plane wave (FP-LAPW) method within the generalized gradient approximation (GGA) in order to investigate the structural and electronic properties of Cd1-xVxS alloy at x = 0.25 in zincblende structure. For the structural properties, we have calculated the equilibrium lattice parameters, such as lattice constant, bulk modulus and first pressure derivatives of the bulk modulus. From the electronic structure, we obtain that Cd0.75V0.25S alloy is nearly half-metallic. The analysis of the density of states (DOS) curves allow to evaluate the spin-exchange splitting energies Δx(d) and Δx(pd) that are generated by V-3d states, where the effective potential for spin-down case is attractive than for spin-up case. Calculations of the exchange constants N0α (valence band) and N0β (conduction band) are served to describe the magnetic behavior of the compounds. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=first-principles%20calculations" title="first-principles calculations">first-principles calculations</a>, <a href="https://publications.waset.org/abstracts/search?q=structural%20properties" title=" structural properties"> structural properties</a>, <a href="https://publications.waset.org/abstracts/search?q=electronic%20properties" title=" electronic properties"> electronic properties</a> </p> <a href="https://publications.waset.org/abstracts/14046/structural-and-electronic-properties-of-cd075v025s-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14046.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">365</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1153</span> The Effect of H2S on Crystal Structure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20Venkataraman%20B.%20E.">C. Venkataraman B. E.</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Nagarajan%20B.%20E."> J. Nagarajan B. E.</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Srinivasan%20M.%20Tech"> V. Srinivasan M. Tech</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For a better understanding on sulfide stress corrosion cracking, a theoretical approach based on crystal structure, molecule behavior, flow of electrons and electrochemical reaction is developed. Its impact on different materials such as carbon steel, low alloy, alloy for sour (H2S) environments is studied. This paper describes the theories on various disaster and failures occurred in the industry by Stress Corrosion Cracking (SCC). Parameters such as pH of process fluid, partial pressure of CO2, O2, Chlorine, effect of internal pressure (crystal structure deformation by stress), and external environment condition are considered. An analytical line graph is then created for process fluid parameter verses time, temperature, induced/residual stress due to local pressure build-up. By comparison with the load test result of NACE and ASTM, it is possible to predict and simplify the control of SCC by use of materials like ferritic, Austenitic material in the oil and gas & petroleum industries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=crystal%20structure%20deformation" title="crystal structure deformation">crystal structure deformation</a>, <a href="https://publications.waset.org/abstracts/search?q=failure%20assessment" title=" failure assessment"> failure assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=alloy-environment%20combination" title=" alloy-environment combination"> alloy-environment combination</a>, <a href="https://publications.waset.org/abstracts/search?q=H2S" title=" H2S"> H2S</a> </p> <a href="https://publications.waset.org/abstracts/19342/the-effect-of-h2s-on-crystal-structure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19342.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">401</span> </span> </div> </div> <ul class="pagination"> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Ni-W-P%20alloy%20coating&amp;page=8" rel="prev">&lsaquo;</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Ni-W-P%20alloy%20coating&amp;page=1">1</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Ni-W-P%20alloy%20coating&amp;page=2">2</a></li> <li class="page-item disabled"><span class="page-link">...</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Ni-W-P%20alloy%20coating&amp;page=6">6</a></li> <li class="page-item"><a class="page-link" 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