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carbide</title> <meta name="description" content="Search results for: boron carbide"> <meta name="keywords" content="boron carbide"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="boron carbide"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 299</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: boron carbide</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">299</span> Effect of Alloying Elements on Particle Incorporation of Boron Carbide Reinforced Aluminum Matrix Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Steven%20Ploetz">Steven Ploetz</a>, <a href="https://publications.waset.org/abstracts/search?q=Andreas%20Lohmueller"> Andreas Lohmueller</a>, <a href="https://publications.waset.org/abstracts/search?q=Robert%20F.%20Singer"> Robert F. Singer</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The outstanding performance of aluminum matrix composites (AMCs) regarding stiffness/weight ratio makes AMCs attractive material for lightweight construction. Low-density boride compounds promise simultaneously an increase in stiffness and decrease in composite density. This is why boron carbide is chosen for composite manufacturing. The composites are fabricated with the stir casting process. To avoid gas entrapment during mixing and ensure nonporous composites, partial vacuum is adapted during particle feeding and stirring. Poor wettability of boron carbide with liquid aluminum hinders particle incorporation, but alloying elements such as magnesium and titanium could improve wettability and thus particle incorporation. Next to alloying elements, adapted stirring parameters and impeller geometries improve particle incorporation and enable homogenous particle distribution and high particle volume fractions of boron carbide. AMCs with up to 15 vol.% of boron carbide particles are produced via melt stirring, resulting in an increase in stiffness and strength. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aluminum%20matrix%20composites" title="aluminum matrix composites">aluminum matrix composites</a>, <a href="https://publications.waset.org/abstracts/search?q=boron%20carbide" title=" boron carbide"> boron carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=stiffness" title=" stiffness"> stiffness</a>, <a href="https://publications.waset.org/abstracts/search?q=stir%20casting" title=" stir casting"> stir casting</a> </p> <a href="https://publications.waset.org/abstracts/64924/effect-of-alloying-elements-on-particle-incorporation-of-boron-carbide-reinforced-aluminum-matrix-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/64924.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">308</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">298</span> Adhesion Enhancement of Boron Carbide Coatings on Aluminum Substrates Utilizing an Intermediate Adhesive Layer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sharon%20Waichman">Sharon Waichman</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahaf%20Froim"> Shahaf Froim</a>, <a href="https://publications.waset.org/abstracts/search?q=Ido%20Zukerman"> Ido Zukerman</a>, <a href="https://publications.waset.org/abstracts/search?q=Shmuel%20Barzilai"> Shmuel Barzilai</a>, <a href="https://publications.waset.org/abstracts/search?q=Shmual%20Hayun"> Shmual Hayun</a>, <a href="https://publications.waset.org/abstracts/search?q=Avi%20Raveh"> Avi Raveh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Boron carbide is a ceramic material with superior properties such as high chemical and thermal stability, high hardness and high wear resistance. Moreover, it has a big cross section for neutron absorption and therefore can be employed in nuclear based applications. However, an efficient attachment of boron carbide to a metal such as aluminum can be very challenging, mainly because of the formation of aluminum-carbon bonds that are unstable in humid environment, the affinity of oxygen to the metal and the different thermal expansion coefficients of the two materials that may cause internal stresses and a subsequent failure of the bond. Here, we aimed to achieving a strong and a durable attachment between the boron carbide coating and the aluminum substrate. For this purpose, we applied Ti as a thin intermediate layer that provides a gradual change in the thermal expansion coefficients of the configured layers. This layer is continuous and therefore prevents the formation of aluminum-carbon bonds. Boron carbide coatings with a thickness of 1-5 µm were deposited on the aluminum substrate by pulse-DC magnetron sputtering. Prior to the deposition of the boron carbide layer, the surface was pretreated by energetic ion plasma followed by deposition of the Ti intermediate adhesive layer in a continuous process. The properties of the Ti intermediate layer were adjusted by the bias applied to the substrate. The boron carbide/aluminum bond was evaluated by various methods and complementary techniques, such as SEM/EDS, XRD, XPS, FTIR spectroscopy and Glow Discharge Spectroscopy (GDS), in order to explore the structure, composition and the properties of the layers and to study the adherence mechanism of the boron carbide/aluminum contact. Based on the interfacial bond characteristics, we propose a desirable solution for improved adhesion of boron carbide to aluminum using a highly efficient intermediate adhesive layer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesion" title="adhesion">adhesion</a>, <a href="https://publications.waset.org/abstracts/search?q=boron%20carbide%20coatings" title=" boron carbide coatings"> boron carbide coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=ceramic%2Fmetal%20bond" title=" ceramic/metal bond"> ceramic/metal bond</a>, <a href="https://publications.waset.org/abstracts/search?q=intermediate%20layer" title=" intermediate layer"> intermediate layer</a>, <a href="https://publications.waset.org/abstracts/search?q=pulsed-DC%20magnetron%20sputtering" title=" pulsed-DC magnetron sputtering"> pulsed-DC magnetron sputtering</a> </p> <a href="https://publications.waset.org/abstracts/107246/adhesion-enhancement-of-boron-carbide-coatings-on-aluminum-substrates-utilizing-an-intermediate-adhesive-layer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107246.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">164</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">297</span> Development and Analysis of SFR Control Rod Design</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lenka%20Duj%C4%8D%C3%ADkov%C3%A1">Lenka Dujčíková</a>, <a href="https://publications.waset.org/abstracts/search?q=Laurent%20Buiron"> Laurent Buiron</a>, <a href="https://publications.waset.org/abstracts/search?q=J%C3%A1n%20Ha%C5%A1%C4%8D%C3%ADk"> Ján Haščík</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study is dedicated to safety management of SFR CAPRA core with CFV design improvements. In the case of CAPRA core, demands for reactivity control are higher than for reference core. There are two possible ways how to ensure the certain amount of negative reactivity. One option is to boost control rods worth. The Greater part of the study is aimed at the proposal of appropriate control rod design. At first, the European Fast Reactor (EFR) control rod design with high-enriched boron carbide B4C as absorber material was tested. Considering costly and difficult enrichment process, usage of natural boron carbide absorbator is desired. Obviously, the use of natural boron leads to CR worth reduction. In order to increase it to required value, moderator material was inserted inside the control rod. Various materials and geometric configurations were examined to find optimal solution corresponding with EFR based CR worth value. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron%20carbide" title="boron carbide">boron carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=CAPRA%20core" title=" CAPRA core"> CAPRA core</a>, <a href="https://publications.waset.org/abstracts/search?q=control%20rod%20design" title=" control rod design"> control rod design</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20void%20effect%20design" title=" low void effect design"> low void effect design</a>, <a href="https://publications.waset.org/abstracts/search?q=melting%20temperature" title=" melting temperature"> melting temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=moderator%20material" title=" moderator material"> moderator material</a> </p> <a href="https://publications.waset.org/abstracts/34110/development-and-analysis-of-sfr-control-rod-design" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34110.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">505</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">296</span> Preparation and Cutting Performance of Boron-Doped Diamond Coating on Cemented Carbide Cutting Tools with High Cobalt Content</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zhaozhi%20Liu">Zhaozhi Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Feng%20Xu"> Feng Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Junhua%20Xu"> Junhua Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaolong%20Tang"> Xiaolong Tang</a>, <a href="https://publications.waset.org/abstracts/search?q=Ying%20Liu"> Ying Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Dunwen%20Zuo"> Dunwen Zuo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Chemical vapor deposition (CVD) diamond coated cutting tool has excellent cutting performance, it is the most ideal tool for the processing of nonferrous metals and alloys, composites, nonmetallic materials and other difficult-to-machine materials efficiently and accurately. Depositing CVD diamond coating on the cemented carbide with high cobalt content can improve its toughness and strength, therefore, it is very important to research on the preparation technology and cutting properties of CVD diamond coated cemented carbide cutting tool with high cobalt content. The preparation technology of boron-doped diamond (BDD) coating has been studied and the coated drills were prepared. BDD coating were deposited on the drills by using the optimized parameters and the SEM results show that there are no cracks or collapses in the coating. Cutting tests with the prepared drills against the silumin and aluminum base printed circuit board (PCB) have been studied. The results show that the wear amount of the coated drill is small and the machined surface has a better precision. The coating does not come off during the test, which shows good adhesion and cutting performance of the drill. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cemented%20carbide%20with%20high%20cobalt%20content" title="cemented carbide with high cobalt content">cemented carbide with high cobalt content</a>, <a href="https://publications.waset.org/abstracts/search?q=CVD%20boron-doped%20diamond" title=" CVD boron-doped diamond"> CVD boron-doped diamond</a>, <a href="https://publications.waset.org/abstracts/search?q=cutting%20test" title=" cutting test"> cutting test</a>, <a href="https://publications.waset.org/abstracts/search?q=drill" title=" drill"> drill</a> </p> <a href="https://publications.waset.org/abstracts/20081/preparation-and-cutting-performance-of-boron-doped-diamond-coating-on-cemented-carbide-cutting-tools-with-high-cobalt-content" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20081.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">420</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">295</span> Low-Temperature Fabrication of Reaction Bonded Composites, Based on Sic and (Sic+B4C) Mixture, Infiltrated with Si-Al Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Helen%20Dilman">Helen Dilman</a>, <a href="https://publications.waset.org/abstracts/search?q=Eyal%20Oz"> Eyal Oz</a>, <a href="https://publications.waset.org/abstracts/search?q=Shmuel%20Hayun"> Shmuel Hayun</a>, <a href="https://publications.waset.org/abstracts/search?q=Nahum%20Frage"> Nahum Frage</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The conventional approach for manufacturing silicon carbide and boron carbide reaction bonded composites is based on infiltrating a ceramic porous preform with molten silicon. The relatively high melting temperature of the silicon infiltrating medium is a drawback of the process. The present contribution is concerned with an approach that allows obtaining reaction bonded composites by pressure-less infiltration at a significantly lower (850-1000oC) temperature range. This approach was applied for the fabrication of fully dense SiC/(Si-Al) and (SiC+B4C)/(Si-Al) composites. The key feature of the approach is based on using Si alloys with low melting temperature and the Mg-vapor atmosphere, under which an adequate wetting between ceramics and liquid alloys for the infiltration process is achieved. In the first set of the experiments ceramic performs compacted from multimodal SiC powders (with the green density of about 27 vol. %) without free carbon addition were infiltrated by Si-20%Al alloy at 950oC. In the second set, 19 vol. % of a fine boron carbide powder was added to SiC powders as a source of carbon. The green density of the SiC-B4C preforms was about 23-25 vol. %. In both cases, successful infiltration was achieved and the composites were fully dense. The density of the composites was about 3g/cm3. For the SiC based composites the hardness value was 750±150HV, Young modulus-280GPa and bending strength-240±30MPa. These values for (SiC-B4C)/(Si-Al) composites (1460±200HV, 317GPa and 360±20MPa) were significantly higher due to the formation of novel ceramics phases. Microstructural characteristics of the composites and their phase composition will be discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron%20carbide" title="boron carbide">boron carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=composites" title=" composites"> composites</a>, <a href="https://publications.waset.org/abstracts/search?q=infiltration" title=" infiltration"> infiltration</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20temperatures" title=" low temperatures"> low temperatures</a>, <a href="https://publications.waset.org/abstracts/search?q=silicon%20carbide" title=" silicon carbide"> silicon carbide</a> </p> <a href="https://publications.waset.org/abstracts/28874/low-temperature-fabrication-of-reaction-bonded-composites-based-on-sic-and-sicb4c-mixture-infiltrated-with-si-al-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28874.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">547</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">294</span> Recovery of Boron from Industrial Wastewater by Chemical Oxo-Precipitation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yao-Hui%20Huang">Yao-Hui Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Ming-Chun%20Yen"> Ming-Chun Yen</a>, <a href="https://publications.waset.org/abstracts/search?q=Jui-Yen%20Lin"> Jui-Yen Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Jen%20Shih"> Yu-Jen Shih</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work investigated the reclamation of boron in industrial wastewaters by a chemical oxo-precipitation (COP) technique at room temperature. In COP, the boric acid was pretreated with H₂O₂, yielding various perborate anions. Afterwards, calcium chloride was used to efficiently remove boron through precipitation of calcium perborate. The important factors included reacted pH and the molar ratio of [Ca]/[B]. Under conditions of pH 11 and [Ca]/[B] of 1, the boron concentration could be reduced immediately from 600 ppm to 50 ppm in 10 minutes. The boron removal was enhanced with a higher [Ca]/[B], which further reduced boron to 20 ppm in 10 minutes. Nevertheless, the dissolution of carbon dioxide potentially affected the efficacy of COP and increased the boron concentration after 10 minutes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chemical%20oxo-precipitation" title="chemical oxo-precipitation">chemical oxo-precipitation</a>, <a href="https://publications.waset.org/abstracts/search?q=boron" title=" boron"> boron</a>, <a href="https://publications.waset.org/abstracts/search?q=carbon%20dioxide" title=" carbon dioxide"> carbon dioxide</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20peroxide" title=" hydrogen peroxide"> hydrogen peroxide</a> </p> <a href="https://publications.waset.org/abstracts/54161/recovery-of-boron-from-industrial-wastewater-by-chemical-oxo-precipitation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54161.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">284</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">293</span> Cutting Performance of BDD Coating on WC-Co Tools</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Feng%20Xu">Feng Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhaozhi%20Liu"> Zhaozhi Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Junhua%20Xu"> Junhua Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaolong%20Tang"> Xiaolong Tang</a>, <a href="https://publications.waset.org/abstracts/search?q=Dunwen%20Zuo"> Dunwen Zuo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Chemical vapor deposition (CVD) diamond coated cutting tool has excellent cutting performance, it is the most ideal tool for the processing of nonferrous metals and alloys, composites, nonmetallic materials and other difficult-to-machine materials efficiently and accurately. Depositing CVD diamond coating on the cemented carbide with high cobalt content can improve its toughness and strength, therefore, it is very important to research on the preparation technology and cutting properties of CVD diamond coated cemented carbide cutting tool with high cobalt content. The preparation technology of boron-doped diamond (BDD) coating has been studied and the coated drills were prepared. BDD coating were deposited on the drills by using the optimized parameters and the SEM results show that there are no cracks or collapses in the coating. Cutting tests with the prepared drills against the silumin and aluminum base printed circuit board (PCB) have been studied. The results show that the wear amount of the coated drill is small and the machined surface has a better precision. The coating does not come off during the test, which shows good adhesion and cutting performance of the drill. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cemented%20carbide%20with%20high%20cobalt%20content" title="cemented carbide with high cobalt content">cemented carbide with high cobalt content</a>, <a href="https://publications.waset.org/abstracts/search?q=CVD%20boron-doped%20diamond" title=" CVD boron-doped diamond"> CVD boron-doped diamond</a>, <a href="https://publications.waset.org/abstracts/search?q=cutting%20test" title=" cutting test"> cutting test</a>, <a href="https://publications.waset.org/abstracts/search?q=drill" title=" drill"> drill</a> </p> <a href="https://publications.waset.org/abstracts/23174/cutting-performance-of-bdd-coating-on-wc-co-tools" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23174.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">440</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">292</span> Comparison of Chemical Coagulation and Electrocoagulation for Boron Removal from Synthetic Wastewater Using Aluminium</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kartikaningsih%20Danis">Kartikaningsih Danis</a>, <a href="https://publications.waset.org/abstracts/search?q=Yao-Hui%20Huang"> Yao-Hui Huang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Various techniques including conventional and advanced have been employed for the boron treatment from water and wastewater. The electrocoagulation involves an electrolytic reactor for coagulation/flotation with aluminium as anode and cathode. There is aluminium as coagulant to be used for removal which may induce secondary pollution in chemical coagulation. The purpose of this study is to investigate and compare the performance between electrocoagulation and chemical coagulation on boron removal from synthetic wastewater. The effect of different parameters, such as pH reaction, coagulant dosage, and initial boron concentration were examined. The results show that the boron removal using chemical coagulation was lower. At the optimum condition (e.g. pH 8 and 0.8 mol coagulant dosage), boron removal efficiencies for chemical coagulation and electrocoagulation were 61% and 91%, respectively. In addition, the electrocoagulation needs no chemical reagents and makes the boron treatment easy for application. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron%20removal" title="boron removal">boron removal</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20coagulation" title=" chemical coagulation"> chemical coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=aluminum" title=" aluminum"> aluminum</a>, <a href="https://publications.waset.org/abstracts/search?q=electro-coagulation" title=" electro-coagulation "> electro-coagulation </a> </p> <a href="https://publications.waset.org/abstracts/22930/comparison-of-chemical-coagulation-and-electrocoagulation-for-boron-removal-from-synthetic-wastewater-using-aluminium" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22930.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">404</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">291</span> Influence of Boron Doping and Thermal Treatment on Internal Friction of Monocrystalline Si1-xGex(x≤0,02) Alloys</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=I.%20Kurashvili">I. Kurashvili</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Darsavelidze"> G. Darsavelidze</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Bokuchava"> G. Bokuchava</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Sichinava"> A. Sichinava</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Tabatadze"> I. Tabatadze </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The impact of boron doping on the internal friction (IF) and shear modulus temperature spectra of Si<sub>1-x</sub>Ge<sub>x</sub>(x≤0,02) monocrsytals has been investigated by reverse torsional pendulum oscillations characteristics testing. At room temperatures, microhardness and indentation modulus of the same specimens have been measured by dynamic ultra microhardness tester. It is shown that boron doping causes two kinds effect: At low boron concentration (~10<sup>15 </sup>cm<sup>-3</sup>) significant strengthening is revealed, while at the high boron concentration (~10<sup>19 </sup>cm<sup>-3</sup>) strengthening effect and activation characteristics of relaxation origin IF processes are reduced. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron" title="boron">boron</a>, <a href="https://publications.waset.org/abstracts/search?q=doping" title=" doping"> doping</a>, <a href="https://publications.waset.org/abstracts/search?q=internal%20friction" title=" internal friction"> internal friction</a>, <a href="https://publications.waset.org/abstracts/search?q=si-ge%20alloys" title=" si-ge alloys"> si-ge alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20treatment" title=" thermal treatment"> thermal treatment</a> </p> <a href="https://publications.waset.org/abstracts/45812/influence-of-boron-doping-and-thermal-treatment-on-internal-friction-of-monocrystalline-si1-xgexx002-alloys" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45812.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">458</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">290</span> Recovery of Boron as Homogeneous Perborate Particles from Synthetic Wastewater by Integrating Chemical Oxo-Precipitation with Fluidized-Bed Homogeneous Granulation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chiung-Chin%20Huang">Chiung-Chin Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jui-Yen%20Lin"> Jui-Yen Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Yao-Hui%20Huang"> Yao-Hui Huang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Among current techniques of boron removal from wastewater with high boron concentration, chemical oxo-precipitation (COP) is one of the promising methods due to its milder condition. COP uses H2O2 to transform boric acid to perborates which can easily precipitate with barium ions at room temperature. However, the generation of the waste sludge that requires sludge/water separation and sludge dewatering is troublesome. This work presents an innovative technology which integrates chemical oxo-precipitation (COP) with fluidized-bed homogeneous granulation (FBHG) to reclaim boron as homogeneous perborate particles. By conducting COP in a fluidized-bed reactor, the barium perborate can be granulated to form homogeneous particles (>1.0 mm) with low water content (< 10%). Under the suitable condition, more than 70% of boron can be recovered from 600 ppm of boron solution and the residual boron is lower than 100 ppm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=barium" title="barium">barium</a>, <a href="https://publications.waset.org/abstracts/search?q=perborate" title=" perborate"> perborate</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20oxo-precipitation" title=" chemical oxo-precipitation"> chemical oxo-precipitation</a>, <a href="https://publications.waset.org/abstracts/search?q=boron%20removal" title=" boron removal"> boron removal</a>, <a href="https://publications.waset.org/abstracts/search?q=fluidized-bed" title=" fluidized-bed"> fluidized-bed</a>, <a href="https://publications.waset.org/abstracts/search?q=granulation" title=" granulation"> granulation</a> </p> <a href="https://publications.waset.org/abstracts/45161/recovery-of-boron-as-homogeneous-perborate-particles-from-synthetic-wastewater-by-integrating-chemical-oxo-precipitation-with-fluidized-bed-homogeneous-granulation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45161.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">322</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">289</span> Electroless Nickel Boron Deposition onto the SiC and B4C Ceramic Reinforced Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=I.%20Kerti">I. Kerti</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Sezen"> G. Sezen</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Daglilar"> S. Daglilar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This present work is focused on studying to improve low wetting behaviour between liquid metal and ceramic particles. Ceramic particles like SiC and B4C have attracted great attention because of their usability as reinforcement for composite materials. However, poor wettability of particles is one of the major drawbacks of metal matrix composite production. Various methods have been studied to enhance the wetting properties between ceramic materials and metal substrates during ceramic reinforced metal matrix composites. Among these methods, autocatalytic nickel deposition is a unique process for the enhancement of the surface properties of ceramic particles. In fact, it is difficult to obtain continuous and uniform metallic coating on ceramic powders. In this study deposition of nickel boron layer on ceramic particles via autocatalytic plating in borohydride baths were investigated. Firstly, powders with different particle sizes were sensitized and activated respectively in order to ensure catalytic properties. Following the pre-treatment operations, particles were transferred into the coating bath containing nickel sulphate or nickel chloride as the Ni2+ source. The results show that a better bonding and uniform coating layer were obtained for Ni-B coatings with the Ni2+ source of NiCl2.6H2O as compared to NiSO4.6H2O. With the progress of the time, both particle surfaces are completely covered by a continuous and thin nickel boron layer. The surface morphology of the coatings that were analysed using scanning electron microscopy (SEM) show that SiC and B4C particles both distributed and different thickness of Ni-B nanolayers have been successfully coated onto the particles. The particles were mounted into a polimeric resin and polished in order to observe the thickness and the continuity of the coating layer. The composition of the coating layers were also evaluated by EDS analyses. The SEM morphologies and the EDS results of the coatings at different reaction times were adopted for detailed discussion of the Ni-B electroless plating mechanism. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron%20carbide" title="boron carbide">boron carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=electroless%20coating" title=" electroless coating"> electroless coating</a>, <a href="https://publications.waset.org/abstracts/search?q=nickel%20boron%20deposition" title=" nickel boron deposition"> nickel boron deposition</a>, <a href="https://publications.waset.org/abstracts/search?q=silicon%20carbide" title=" silicon carbide"> silicon carbide</a> </p> <a href="https://publications.waset.org/abstracts/41199/electroless-nickel-boron-deposition-onto-the-sic-and-b4c-ceramic-reinforced-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41199.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">348</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">288</span> The Effect of Solution Density on the Synthesis of Magnesium Borate from Boron-Gypsum</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Tugrul">N. Tugrul</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Sariburun"> E. Sariburun</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20T.%20Senberber"> F. T. Senberber</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20S.%20Kipcak"> A. S. Kipcak</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Moroydor%20Derun"> E. Moroydor Derun</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Piskin"> S. Piskin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Boron-gypsum is a waste which occurs in the boric acid production process. In this study, the boron content of this waste is evaluated for the use in synthesis of magnesium borates and such evaluation of this kind of waste is useful more than storage or disposal. Magnesium borates, which are a sub-class of boron minerals, are useful additive materials for the industries due to their remarkable thermal and mechanical properties. Magnesium borates were obtained hydrothermally at different temperatures. Novelty of this study is the search of the solution density effects to magnesium borate synthesis process for the increasing the possibility of boron-gypsum usage as a raw material. After the synthesis process, products are subjected to XRD and FT-IR to identify and characterize their crystal structure, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron-gypsum" title="boron-gypsum">boron-gypsum</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrothermal%20synthesis" title=" hydrothermal synthesis"> hydrothermal synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=magnesium%20borate" title=" magnesium borate"> magnesium borate</a>, <a href="https://publications.waset.org/abstracts/search?q=solution%20density" title=" solution density"> solution density</a> </p> <a href="https://publications.waset.org/abstracts/12465/the-effect-of-solution-density-on-the-synthesis-of-magnesium-borate-from-boron-gypsum" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12465.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">396</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">287</span> Pioneer Synthesis and Characterization of Boron Containing Hard Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G%C3%BCl%C5%9Fah%20%C3%87elik%20G%C3%BCl">Gülşah Çelik Gül</a>, <a href="https://publications.waset.org/abstracts/search?q=Figen%20Kurtulu%C5%9F"> Figen Kurtuluş</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The first laboratory synthesis of hard materials such as diamond proceeded to attack of developing materials with high hardness to compete diamond. Boron rich solids are good candidates owing to their short interatomic bond lengths and strong covalent character. Boron containing hard material was synthesized by modified-microwave method under nitrogen atmosphere by using a fuel (glycine or urea), amorphous boron and/or boric acid in appropriate molar ratio. Characterizations were done by x-ray diffraction (XRD), fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy/energy dispersive analyze (SEM/EDS), thermo gravimetric/differantial thermal analysis (TG/DTA). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron%20containing%20materials" title="boron containing materials">boron containing materials</a>, <a href="https://publications.waset.org/abstracts/search?q=hard%20materials" title=" hard materials"> hard materials</a>, <a href="https://publications.waset.org/abstracts/search?q=microwave%20synthesis" title=" microwave synthesis"> microwave synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=powder%20X-ray%20diffraction" title=" powder X-ray diffraction "> powder X-ray diffraction </a> </p> <a href="https://publications.waset.org/abstracts/27062/pioneer-synthesis-and-characterization-of-boron-containing-hard-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27062.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">593</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">286</span> Electrocoagulation of Ni(OH)2/NiOOH for the Removal of Boron Using Nickel Foam as Sacrificial Anode </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yu-Jen%20Shih">Yu-Jen Shih</a>, <a href="https://publications.waset.org/abstracts/search?q=Yao-Hui%20Hunag"> Yao-Hui Hunag</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electrocoagulation (EC) using metallic nickel foam as anode and cathode for the removal of boron from solution was studied. The electrolytic parameters included pH, current density, and initial boron concentration for optimizing the EC process. Experimental results showed that removal efficiency was increased by elevating pH from 4.0 to 8.0, and then decreased at higher pH. The electrolytic efficacy was not affected by current density. In respect of energy consumption, 1.25 mA/cm2 of current density was acceptable for an effective EC of boron, while increasing boric acid from 10 to 100 ppm-B did not impair removal efficiency too much. Cyclic voltammetry indicated that the oxide film, Ni(OH)2 and NiOOH, at specific overpotentials would result in less weight loss of anode than that predicted by the Faraday’s law. The optimal conditions under which 99.2% of boron was removed and less than 1 ppm-B remained in the electrolyte would be pH 8, four pairs of electrodes, and 1.25 mA/cm2 in 120 min as treating wastewaters containing 10 ppm-B. XRD and SEM characterization suggested that the granular crystallites of hydroxide precipitates was composed of theophrastite. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=borohydrides" title="borohydrides">borohydrides</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20generation" title=" hydrogen generation"> hydrogen generation</a>, <a href="https://publications.waset.org/abstracts/search?q=NiOOH" title=" NiOOH"> NiOOH</a>, <a href="https://publications.waset.org/abstracts/search?q=electrocoagulation" title=" electrocoagulation"> electrocoagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=cyclic%20voltammetry" title=" cyclic voltammetry"> cyclic voltammetry</a>, <a href="https://publications.waset.org/abstracts/search?q=boron%20removal" title=" boron removal"> boron removal</a> </p> <a href="https://publications.waset.org/abstracts/45835/electrocoagulation-of-nioh2niooh-for-the-removal-of-boron-using-nickel-foam-as-sacrificial-anode" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45835.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">260</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">285</span> A Fluorescent Polymeric Boron Sensor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Soner%20Cubuk">Soner Cubuk</a>, <a href="https://publications.waset.org/abstracts/search?q=Mirgul%20Kosif"> Mirgul Kosif</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Vezir%20Kahraman"> M. Vezir Kahraman</a>, <a href="https://publications.waset.org/abstracts/search?q=Ece%20Kok%20Yetimoglu"> Ece Kok Yetimoglu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Boron is an essential trace element for the completion of the life circle for organisms. Suitable methods for the determination of boron have been proposed, including acid - base titrimetric, inductively coupled plasma emission spectroscopy flame atomic absorption and spectrophotometric. However, the above methods have some disadvantages such as long analysis times, requirement of corrosive media such as concentrated sulphuric acid and multi-step sample preparation requirements and time-consuming procedures. In this study, a selective and reusable fluorescent sensor for boron based on glycosyloxyethyl methacrylate was prepared by photopolymerization. The response characteristics such as response time, pH, linear range, limit of detection were systematically investigated. The excitation/emission maxima of the membrane were at 378/423 nm, respectively. The approximate response time was measured as 50 sec. In addition, sensor had a very low limit of detection which was 0.3 ppb. The sensor was successfully used for the determination of boron in water samples with satisfactory results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron" title="boron">boron</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescence" title=" fluorescence"> fluorescence</a>, <a href="https://publications.waset.org/abstracts/search?q=photopolymerization" title=" photopolymerization"> photopolymerization</a>, <a href="https://publications.waset.org/abstracts/search?q=polymeric%20sensor" title=" polymeric sensor"> polymeric sensor</a> </p> <a href="https://publications.waset.org/abstracts/41973/a-fluorescent-polymeric-boron-sensor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41973.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">283</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">284</span> Mechanochemical Behaviour of Aluminium–Boron Oxide–Melamine Ternary System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ismail%20Seckin%20Cardakli">Ismail Seckin Cardakli</a>, <a href="https://publications.waset.org/abstracts/search?q=Mustafa%20Engin%20Kocadagistan"> Mustafa Engin Kocadagistan</a>, <a href="https://publications.waset.org/abstracts/search?q=Ersin%20Arslan"> Ersin Arslan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, mechanochemical behaviour of aluminium - boron oxide - melamine ternary system was investigated by high energy ball milling. According to the reaction Al + B₂O₃ = Al₂O₃ + B, stochiometric amount of aluminium and boron oxide with melamine up to ten percent of total weight was used in the experiments. The powder characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM) after leaching of product by 1M HCl acid. Results show that mechanically induced self-sustaining reaction (MSR) between aluminium and boron oxide takes place after four hours high energy ball milling. Al₂O₃/h-BN composite powder is obtained as the product of aluminium - boron oxide - melamine ternary system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high%20energy%20ball%20milling" title="high energy ball milling">high energy ball milling</a>, <a href="https://publications.waset.org/abstracts/search?q=hexagonal%20boron%20nitride" title=" hexagonal boron nitride"> hexagonal boron nitride</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanically%20induced%20self-sustaining%20reaction" title=" mechanically induced self-sustaining reaction"> mechanically induced self-sustaining reaction</a>, <a href="https://publications.waset.org/abstracts/search?q=melamine" title=" melamine"> melamine</a> </p> <a href="https://publications.waset.org/abstracts/106406/mechanochemical-behaviour-of-aluminium-boron-oxide-melamine-ternary-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106406.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">148</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">283</span> Production of Amorphous Boron Powder via Chemical Vapor Deposition (CVD)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Meltem%20Bolluk">Meltem Bolluk</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail%20Duman"> Ismail Duman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Boron exhibits the properties of high melting temperature (2273K to 2573 K), high hardness (Mohs: 9,5), low density (2,340 g/cm3), high chemical resistance, high strength, and semiconductivity (band gap:1,6-2,1 eV). These superior properties enable to use it in several high-tech areas from electronics to nuclear industry and especially in high temperature metallurgy. Amorphous boron and crystalline boron have different application areas. Amorphous boron powder (directly amorphous and/or α-rhombohedral) is preferred in rocket firing, airbag inflating and in fabrication of superconducting MgB2 wires. The conventional ways to produce elemental boron with a purity of 85 pct to 95 prc are metallothermic reduction, fused salt electrolysis and mechanochemical synthesis; but the only way to produce high-purity boron powders is Chemical Vapour Deposition (Hot Surface CVD). In this study; amorphous boron powders with a minimum purity of 99,9 prc were synthesized in quartz tubes using BCl3-H2 gas mixture by CVD. Process conditions based on temperature and gas flow rate were determined. Thermodynamical interpretation of BCl3-H2 system for different temperatures and molar rates were performed using Fact Sage software. The characterization of powders was examined by using Xray diffraction (XRD), Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM), Stereo Microscope (SM), Helium gas pycnometer analysis. The purities of final products were determined by titration after lime fusion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amorphous%20boron" title="amorphous boron">amorphous boron</a>, <a href="https://publications.waset.org/abstracts/search?q=CVD" title=" CVD"> CVD</a>, <a href="https://publications.waset.org/abstracts/search?q=powder%20production" title=" powder production"> powder production</a>, <a href="https://publications.waset.org/abstracts/search?q=powder%20characterization" title=" powder characterization"> powder characterization</a> </p> <a href="https://publications.waset.org/abstracts/57325/production-of-amorphous-boron-powder-via-chemical-vapor-deposition-cvd" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57325.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">217</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">282</span> Effects of Boron Compounds in Rabbits Fed High Protein and Energy Diet: A Metabolomic and Transcriptomic Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nuri%20Ba%C5%9Fp%C4%B1nar">Nuri Başpınar</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdullah%20Ba%C5%9Fo%C4%9Flu"> Abdullah Başoğlu</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%96zg%C3%BCr%20%C3%96zdemir"> Özgür Özdemir</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%87a%C4%9Flayan%20%C3%96zel"> Çağlayan Özel</a>, <a href="https://publications.waset.org/abstracts/search?q=FundaTerzi"> FundaTerzi</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%96zg%C3%BCr%20Yaman"> Özgür Yaman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Current research is targeting new molecular mechanisms that underlie non-alcoholic fatty liver disease (NAFLD) and associated metabolic disorders like nonalcoholic steatohepatitis (NASH). Forty New Zealand White rabbits have been used and fed a high protein (HP) and energy diet based on grains and containing 11.76 MJ/kg. Boron added to 3 experimental groups’ drinking waters (30 mg boron/L) as boron compounds. Biochemical analysis including boron levels, and nuclear magnetic resonance (NMR) based metabolomics evaluation, and mRNA expression of peroxisome proliferator-activated receptor (PPAR) family were performed. LDL-cholesterol concentrations alone were decreased in all the experimental groups. Boron levels in serum and feces were increased. Content of acetate was in about 2x higher for anhydrous borax group, at least 3x higher for boric acid group. PPARα mRNA expression was significantly decreased in boric acid group. Anhydrous borax attenuated mRNA levels of PPARα, which was further suppressed by boric acid. Boron supplementation decreased the degenerative alterations in hepatocytes. Except borax group other boron groups did not have a pronounced change in tubular epithels of kidney. In conclusion, high protein and energy diet leads hepatocytes’ degenerative changes which can be prevented by boron supplementation. Boric acid seems to precede in this effectiveness. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high%20protein%20and%20energy%20diet" title="high protein and energy diet">high protein and energy diet</a>, <a href="https://publications.waset.org/abstracts/search?q=boron" title=" boron"> boron</a>, <a href="https://publications.waset.org/abstracts/search?q=metabolomics" title=" metabolomics"> metabolomics</a>, <a href="https://publications.waset.org/abstracts/search?q=transcriptomic" title=" transcriptomic "> transcriptomic </a> </p> <a href="https://publications.waset.org/abstracts/28491/effects-of-boron-compounds-in-rabbits-fed-high-protein-and-energy-diet-a-metabolomic-and-transcriptomic-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28491.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">627</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">281</span> Microstructure Characterization on Silicon Carbide Formation from Natural Wood</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Noor%20Leha%20Abdul%20Rahman">Noor Leha Abdul Rahman</a>, <a href="https://publications.waset.org/abstracts/search?q=Koay%20Mei%20Hyie"> Koay Mei Hyie</a>, <a href="https://publications.waset.org/abstracts/search?q=Anizah%20Kalam"> Anizah Kalam</a>, <a href="https://publications.waset.org/abstracts/search?q=Husna%20Elias"> Husna Elias</a>, <a href="https://publications.waset.org/abstracts/search?q=Teng%20Wang%20Dung"> Teng Wang Dung</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dark Red Meranti and Kapur, kinds of important type of wood in Malaysia were used as a precursor to fabricate porous silicon carbide. A carbon template is produced by pyrolysis at 850°C in an oxygen free atmosphere. The carbon template then further subjected to infiltration with silicon by silicon melt infiltration method. The infiltration process was carried out in tube furnace in argon flow at 1500°C, at two different holding time; 2 hours and 3 hours. Thermo gravimetric analysis was done to investigate the decomposition behavior of two species of plants. The resulting silicon carbide was characterized by XRD which was found the formation of silicon carbide and also excess silicon. The microstructure was characterized by scanning electron microscope (SEM) and the density was determined by the Archimedes method. An increase in holding time during infiltration will increased the density as well as formation of silicon carbide. Dark Red Meranti precursor is likely suitable for production of silicon carbide compared to Kapur. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=density" title="density">density</a>, <a href="https://publications.waset.org/abstracts/search?q=SEM" title=" SEM"> SEM</a>, <a href="https://publications.waset.org/abstracts/search?q=silicon%20carbide" title=" silicon carbide"> silicon carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=XRD" title=" XRD "> XRD </a> </p> <a href="https://publications.waset.org/abstracts/30071/microstructure-characterization-on-silicon-carbide-formation-from-natural-wood" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30071.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">424</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">280</span> Influence of Sulphur and Boron on Growth, Quality Parameters and Productivity of Soybean (Glycine Max (L.) Merrill)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shital%20Bangar">Shital Bangar</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20B.%20Khandagale"> G. B. Khandagale</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The experimentation was carried out to study the influence of sulphur and boron on growth parameters and productivity of soybean in kharif season of 2009-2010 at Experimental Farm, Department of Agricultural Botany, Marathwada Agricultural University, Parbhani (M.S.). The object was to evaluate the impact of sulphur and boron on growth, development, grain yield and physiological aspects of soybean variety MAUS-81. Nine treatments consisted of three levels of sulphur i.e. 20, 30 and 40 Kg/ha as well as three levels boron i.e.10, 15 and 20 kg boron/ha and the combinations of these two mineral elements i.e. Sulphur @30 kg/ha + Borax @15 kg/ha and Sulphur @40 kg/ha + Borax @ 20 kg/ha with one control treatment in Randomized Block Design (RBD) with three replications. The effect of sulphur and boron on various growth parameters of soybean like relative growth rate (RGR) and net assimilation rate (NAR) were remained statistically on par with each other. However, the application of higher dose of Sulphur @40 kg/ha + Borax @ 20 kg/ha enhanced significantly all the growth parameters. Application of the nutrients increased the dry matter accumulation of the crop plant and hence, other growth indices like RGR and NAR also increased significantly. RGR and NAR values were recorded highest at the initial crop growth stages and decline thereafter. The application of sulphur @40 kg/ha + Borax @ 20 kg/ha recorded significantly higher content of chlorophyll ‘a’ than rest of the treatments and chlorophyll ‘b’ observed higher in boron @15 kg/ha as well as boron@20 kg/ha, whereas total chlorophyll content was maximum in sulphur @40 kg/ha. Oil content was not influenced significantly due to above fertilization. The highest seed yield and total biological yield were obtained with combination of Sulphur @40 kg/ha + Borax @ 20 kg/ha, single sulphur and boron application also showed a significant effect on seed and biological yield. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron" title="boron">boron</a>, <a href="https://publications.waset.org/abstracts/search?q=growth" title=" growth"> growth</a>, <a href="https://publications.waset.org/abstracts/search?q=productivity" title=" productivity"> productivity</a>, <a href="https://publications.waset.org/abstracts/search?q=quality" title=" quality"> quality</a>, <a href="https://publications.waset.org/abstracts/search?q=soybean%20and%20sulphur" title=" soybean and sulphur"> soybean and sulphur</a> </p> <a href="https://publications.waset.org/abstracts/21799/influence-of-sulphur-and-boron-on-growth-quality-parameters-and-productivity-of-soybean-glycine-max-l-merrill" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21799.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">405</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">279</span> Liquid Phase Sintering of Boron-Alloyed Powder Metallurgy Stainless Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ming-Wei%20Wu">Ming-Wei Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Zih-Jie%20Lin"> Zih-Jie Lin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Liquid phase sintering (LPS) is a feasible means for decreasing the porosity of powder metallurgy (PM) Fe-based material without substantially increase the production cost. The aim of this study was to investigate the effect of 0.6 wt% boron on the densification of PM 304L stainless steel by LPS. The results indicated that the increase in the sintered density of 304L+0.6B steel is obvious after 1250 ºC sintering, and eutectic structures with borides are observed at the interfaces of the raw steel powders. Differential scanning calorimetry (DSC) results show that liquid is generated at 1244ºC during sintering. The boride in the eutectic structure is rich in boron and chromium atoms and is deficient in nickel atoms, as identified by electron probe micro-analyzer (EPMA). Furthermore, the sintered densities of 304L and 304L+0.6B steels sintered at 1300 ºC are 6.99 g/cm3 and 7.69 g/cm3, respectively, indicating that boron is a suitable alloying element for facilitating LPS of PM 304L stainless steel. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=powder%20metallurgy" title="powder metallurgy">powder metallurgy</a>, <a href="https://publications.waset.org/abstracts/search?q=liquid%20phase%20sintering" title=" liquid phase sintering"> liquid phase sintering</a>, <a href="https://publications.waset.org/abstracts/search?q=stainless%20steel" title=" stainless steel"> stainless steel</a>, <a href="https://publications.waset.org/abstracts/search?q=boron" title=" boron"> boron</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a> </p> <a href="https://publications.waset.org/abstracts/62892/liquid-phase-sintering-of-boron-alloyed-powder-metallurgy-stainless-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62892.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">336</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">278</span> The Study of Aluminum Effects Layer Austenite Twins Adjacent to K-Carbide Plates in the Cellular Structure of a Mn-Al Alloy Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wu%20Wei-Ting">Wu Wei-Ting</a>, <a href="https://publications.waset.org/abstracts/search?q=Liu%20Po-Yen"> Liu Po-Yen</a>, <a href="https://publications.waset.org/abstracts/search?q=Chang%20Chin-Tzu"> Chang Chin-Tzu</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng%20Wei-Chun"> Cheng Wei-Chun</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Three types of low-temperature phase transformations in an Fe-12.5 Mn-6.53 Al-1.28 C (wt %) alloy have been studied. The steel underwent solution heat treatment at 1100℃ and isothermal holding at low temperatures. γ’ phase appears in the austenite matrix in the air-cooled steel. Coherent ultra-fine particles of γ’ phase precipitated uniformly in the austenite matrix after the air-cooling process. These ultra-fine particles were very small and only could be detected by TEM through dark-field images. After short periods of isothermal holding at low temperatures these particles of γ’ phase grew and could be easily detected by TEM. A pro-eutectoid reaction happened after isothermal holding at temperatures below 875 ℃. Proeutectoid κ-carbide and ferrite appear in the austenite matrix as grain boundary precipitates and cellular precipitates. The cellular precipitates are composed of lamellar κ-carbide and austenite. The lamellar κ-carbide grains are always accompanied by layers of austenite twins. The presence of twin layers adhering to the κ-carbide plates might be attributed to the lower activation energy for the precipitation of κ-carbide plates in the austenite. The final form of phase transformation is the eutectoid reaction for the decomposition of supersaturated austenite into stable κ-carbide and ferrite phases at temperatures below 700℃. The ferrite and κ-carbide are in the form of pearlite lamellae. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=austenite" title="austenite">austenite</a>, <a href="https://publications.waset.org/abstracts/search?q=austenite%20twin%20layers" title=" austenite twin layers"> austenite twin layers</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%BA-carbide" title=" κ-carbide"> κ-carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=twins" title=" twins"> twins</a> </p> <a href="https://publications.waset.org/abstracts/72110/the-study-of-aluminum-effects-layer-austenite-twins-adjacent-to-k-carbide-plates-in-the-cellular-structure-of-a-mn-al-alloy-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72110.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">227</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">277</span> Microstructure and Sintering of Boron-Alloyed Martensitic Stainless Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ming-Wei%20Wu">Ming-Wei Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Jin%20Tsai"> Yu-Jin Tsai</a>, <a href="https://publications.waset.org/abstracts/search?q=Ching-Huai%20Chang"> Ching-Huai Chang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Liquid phase sintering (LPS) is a versatile technique for achieving effective densification of powder metallurgy (PM) steels and other materials. The aim of this study was to examine the influences of 0.6 wt% boron on the microstructure and LPS behavior of boron-alloyed 410 martensitic stainless steel. The results showed that adding 0.6 wt% boron can obviously promote the LPS due to a eutectic reaction and increase the sintered density of 410 stainless steel. The density was much increased by 1.06 g/cm³ after 1225ºC sintering. Increasing the sintering temperature from 1225ºC to 1275ºC did not obviously improve the sintered density. After sintering at 1225ºC~1275ºC, the matrix was fully martensitic, and intragranular borides were extensively found due to the solidification of eutectic liquid. The microstructure after LPS consisted of the martensitic matrix and (Fe, Cr)2B boride, as identified by electron backscatter diffraction (EBSD) and electron probe micro-analysis (EPMA). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=powder%20metallurgy" title="powder metallurgy">powder metallurgy</a>, <a href="https://publications.waset.org/abstracts/search?q=liquid%20phase%20sintering" title=" liquid phase sintering"> liquid phase sintering</a>, <a href="https://publications.waset.org/abstracts/search?q=stainless%20steel" title=" stainless steel"> stainless steel</a>, <a href="https://publications.waset.org/abstracts/search?q=martensite" title=" martensite"> martensite</a>, <a href="https://publications.waset.org/abstracts/search?q=boron" title=" boron"> boron</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a> </p> <a href="https://publications.waset.org/abstracts/73936/microstructure-and-sintering-of-boron-alloyed-martensitic-stainless-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/73936.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">258</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">276</span> A Novel Eccentric Lapping Method with Two Rotatable Lapping Plates for Finishing Cemented Carbide Balls</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20C.%20Lv">C. C. Lv</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20L.%20Sun"> Y. L. Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20W.%20Zuo"> D. W. Zuo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cemented carbide balls are usually implemented in industry under the environment of high speed, high temperature, corrosiveness and strong collisions. However, its application is limited due to high fabrication cost, processing efficiency and quality. A novel eccentric lapping method with two rotatable lapping plates was proposed in this paper. A mathematical model was constructed to analyze the influence of each design parameter on this lapping method. To validate this new lapping method, an orthogonal experiment was conducted with cemented carbide balls (YG6). The simulation model was verified and the optimal lapping parameters were derived. The results show that the surface roundness of the balls reaches to 0.65um from 2um in 1 hour using this lapping method. So, using this novel lapping method, it can effectively improve the machining precision and efficiency of cemented carbide balls. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cemented%20carbide%20balls" title="cemented carbide balls">cemented carbide balls</a>, <a href="https://publications.waset.org/abstracts/search?q=eccentric%20lapping" title=" eccentric lapping"> eccentric lapping</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20precision" title=" high precision"> high precision</a>, <a href="https://publications.waset.org/abstracts/search?q=lapping%20tracks" title=" lapping tracks"> lapping tracks</a>, <a href="https://publications.waset.org/abstracts/search?q=V-groove" title=" V-groove"> V-groove</a> </p> <a href="https://publications.waset.org/abstracts/20023/a-novel-eccentric-lapping-method-with-two-rotatable-lapping-plates-for-finishing-cemented-carbide-balls" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20023.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">394</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">275</span> Lithium Oxide Effect on the Thermal and Physical Properties of the Ternary System Glasses (Li2O3-B2O3-Al2O3) </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20Aboutaleb">D. Aboutaleb</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Safi"> B. Safi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The borate glasses are known by their structural characterized by existence of unit’s structural composed by triangles and tetrahedrons boron in different configurations depending on the percentage of B2O3 in the glass chemical composition. In this paper, effect of lithium oxide addition on the thermal and physical properties of an alumina borate glass, was investigated. It was found that the boron abnormality has a significant effect in the change of glass properties according to the addition rate of lithium oxide. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=borate%20glasses" title="borate glasses">borate glasses</a>, <a href="https://publications.waset.org/abstracts/search?q=triangles%20and%20tetrahedrons%20boron" title=" triangles and tetrahedrons boron"> triangles and tetrahedrons boron</a>, <a href="https://publications.waset.org/abstracts/search?q=lithium%20oxide" title=" lithium oxide"> lithium oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=boron%20anomaly" title=" boron anomaly"> boron anomaly</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20properties" title=" thermal properties"> thermal properties</a>, <a href="https://publications.waset.org/abstracts/search?q=physical%20properties" title=" physical properties"> physical properties</a> </p> <a href="https://publications.waset.org/abstracts/13807/lithium-oxide-effect-on-the-thermal-and-physical-properties-of-the-ternary-system-glasses-li2o3-b2o3-al2o3" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13807.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">359</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">274</span> Investigation of Additives' Corrosion Inhibition Effects on Dye</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdullah%20Bilal%20Ozturk">Abdullah Bilal Ozturk</a>, <a href="https://publications.waset.org/abstracts/search?q=Nil%20Acarali"> Nil Acarali</a>, <a href="https://publications.waset.org/abstracts/search?q=Hediye%20Irem%20Ozgunduz"> Hediye Irem Ozgunduz</a>, <a href="https://publications.waset.org/abstracts/search?q=Hava%20Gizem%20Kandilci"> Hava Gizem Kandilci</a>, <a href="https://publications.waset.org/abstracts/search?q=Hanifi%20Sarac"> Hanifi Sarac</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, zeolite, shellac and different boron chemicals were used as additive to dye and effects were comprehensively investigated. Considering previous studies additive materials that had not used before were determined for produce dye with physical properties. Literature research about the materials provides determining easily sufficient amount of additive materials. Accessible of additives or yearly production amounts are become important issue at selection of materials. Zeolite and boron chemicals are suitable selection in that easy access and has large amount of production in our country. Previous research about boron chemicals shows they have flame retardant effect on textile materials besides numerous usage areas. Also, from previous research, shellac was used widely for protection and insulation of metallic materials. Zeolite added to dye to increase adhesive effect of dye. In this study, corrosion tests were applied to find out if there are positive effects of zeolite, shellac, and boron chemicals to dye’s physical properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dye" title="dye">dye</a>, <a href="https://publications.waset.org/abstracts/search?q=corrosion" title=" corrosion"> corrosion</a>, <a href="https://publications.waset.org/abstracts/search?q=zeolite" title=" zeolite"> zeolite</a>, <a href="https://publications.waset.org/abstracts/search?q=shellac" title=" shellac"> shellac</a>, <a href="https://publications.waset.org/abstracts/search?q=boron" title=" boron"> boron</a> </p> <a href="https://publications.waset.org/abstracts/34282/investigation-of-additives-corrosion-inhibition-effects-on-dye" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34282.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">273</span> Impact of Calcium Carbide Waste Dumpsites on Soil Chemical and Microbial Characteristics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20E.%20Ihejirika">C. E. Ihejirika</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20I.%20Nwachukwu"> M. I. Nwachukwu</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20F.%20Njoku-Tony"> R. F. Njoku-Tony</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20C.%20Ihejirika"> O. C. Ihejirika</a>, <a href="https://publications.waset.org/abstracts/search?q=U.%20O.%20Enwereuzoh"> U. O. Enwereuzoh</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20O.%20Imo"> E. O. Imo</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20C.%20Ashiegbu"> D. C. Ashiegbu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Disposal of industrial solid wastes in the environment is a major environmental challenge. This study investigated the effects of calcium carbide waste dumpsites on soil quality. Soil samples were collected with hand auger from three different dumpsites at varying depths and made into composite samples. Samples were subjected to standard analytical procedures. pH varied from 10.38 to 8.28, nitrate from 5.6mg/kg to 9.3mg/kg, phosphate from 8.8mg/kg to 12.3mg/kg, calcium carbide reduced from 10% to to 3%. Calcium carbide was absent in control soil samples. Bacterial counts from dumpsites ranged from 1.8 x 105cfu/g - 2.5 x 105cfu/g while fungal ranged from 0.8 x 103cfu/g - 1.4 x 103cfu/g. Bacterial isolates included Pseudomonas spp, Flavobacterium spp, and Achromobacter spp, while fungal isolates include Penicillium notatum, Aspergillus niger, and Rhizopus stolonifer. No organism was isolated from the dumpsites at soil depth of 0-15 cm, while there were isolates from other soil depths. Toxicity might be due to alkaline condition of the dumpsite. Calcium carbide might be bactericidal and fungicidal leading to cellular physiology, growth retardation, death, general loss of biodiversity and reduction of ecosystem processes. Detoxification of calcium carbide waste before disposal on soil might be the best option in management. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biodiversity" title="biodiversity">biodiversity</a>, <a href="https://publications.waset.org/abstracts/search?q=calcium-carbide" title=" calcium-carbide"> calcium-carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=denitrification" title=" denitrification"> denitrification</a>, <a href="https://publications.waset.org/abstracts/search?q=toxicity" title=" toxicity "> toxicity </a> </p> <a href="https://publications.waset.org/abstracts/12369/impact-of-calcium-carbide-waste-dumpsites-on-soil-chemical-and-microbial-characteristics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12369.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">546</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">272</span> Theoretical Method for Full Ab-Initio Calculation of Rhenium Carbide Compound</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.Rached">D.Rached</a>, <a href="https://publications.waset.org/abstracts/search?q=M.Rabah"> M.Rabah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> First principles calculations are carried out to investigate the structural, electronic, and elastic properties of the utraincompressible materials, namely, noble metal carbide of Rhenium carbide (ReC) in four phases, the rocksalt (NaCl-B1), zinc blende (ZB-B2), the tungsten carbide(Bh) (WC), and the nickel arsenide (NiAs-B8).The ground state properties such as the equilibrium lattice constant, elastic constants, the bulk modulus its pressure derivate, and the hardness of ReC in these phases are systematically predicted by calculations from first–principles. The corresponding calculated bulk modulus is comparable with that of diamond, especially for the B8 –type rhenium carbide (ReC), the incompressibility along the c axis is demonstrated to exceed the linear incompressibility of diamond. Our calculations confirm in the nickel arsenide (B8) structure the ReC is found to be stable with a large bulk modulus B=440 GPa and the tungsten carbide (WC) structure becomes the most more favourable with to respect B3 and B1 structures, which ReC- WC is meta-stable. Furthermore, the highest bulk modulus values in the zinc blende (B3), rock salt (B1), tungsten carbide (WC), and the nickel arsenide (B8) structures (294GPa, 401GPa, 415GPa and 447 GPa, respectively) indicates that ReC is a hard material, and is superhard compound H(B8)= 36 GPa compared with the H(diamond)=96 GPa and H(c BN)=63.10 GPa. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DFT" title="DFT">DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=FP-LMTO" title=" FP-LMTO"> FP-LMTO</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=elasticity" title=" elasticity"> elasticity</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20pressure" title=" high pressure"> high pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20properties" title=" thermodynamic properties"> thermodynamic properties</a>, <a href="https://publications.waset.org/abstracts/search?q=hard%20material" title=" hard material"> hard material</a> </p> <a href="https://publications.waset.org/abstracts/13995/theoretical-method-for-full-ab-initio-calculation-of-rhenium-carbide-compound" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13995.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">441</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">271</span> Graphene Based Materials as Novel Membranes for Water Desalination and Boron Separation </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Francesca%20Risplendi">Francesca Risplendi</a>, <a href="https://publications.waset.org/abstracts/search?q=Li-Chiang%20Lin"> Li-Chiang Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Jeffrey%20C.%20Grossman"> Jeffrey C. Grossman</a>, <a href="https://publications.waset.org/abstracts/search?q=Giancarlo%20Cicero"> Giancarlo Cicero</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Desalination is one of the most employed approaches to supply water in the context of a rapidly growing global water shortage. However, the most popular water filtration method available is the reverse osmosis (RO) technique, still suffers from important drawbacks, such as a large energy demands and high process costs. In addition some serious limitations have been recently discovered, among them, the boron problem seems to have a critical meaning. Boron has been found to have a dual effect on the living systems on Earth and the difference between boron deficiency and boron toxicity levels is quite small. The aim of this project is to develop a new generation of RO membranes based on porous graphene or reduced graphene oxide (rGO) able to remove salts from seawater and to reduce boron concentrations in the permeate to the level that meets the drinking or process water requirements, by means of a theoretical approach based on density functional theory and classical molecular dynamics. Computer simulations have been employed to investigate the relationship between the atomic structure of nanoporous graphene or rGO monolayer and its membrane properties in RO applications (i.e. water permeability and resilience at RO pressures). In addition, an emphasis has been given to multilayer nanoporous rGO and rGO flakes based membranes. By means of non-equilibrium MD simulations, we investigated the water transport mechanism permeating through such multilayer membrane focusing on the effect of slit widths and sheet geometries. These simulations allowed us to establish the implications of these graphene based materials as promising membrane properties for desalination plants and as boron filtration. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron%20filtration" title="boron filtration">boron filtration</a>, <a href="https://publications.waset.org/abstracts/search?q=desalination" title=" desalination"> desalination</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene%20membrane" title=" graphene membrane"> graphene membrane</a>, <a href="https://publications.waset.org/abstracts/search?q=reduced%20graphene%20oxide%20membrane" title=" reduced graphene oxide membrane"> reduced graphene oxide membrane</a> </p> <a href="https://publications.waset.org/abstracts/69154/graphene-based-materials-as-novel-membranes-for-water-desalination-and-boron-separation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69154.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">299</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">270</span> Dual-Phase High Entropy (Ti₀.₂₅V₀.₂₅Zr₀.₂₅Hf₀.₂₅) BxCy Ceramics Produced by Spark Plasma Sintering</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ana-Carolina%20Feltrin">Ana-Carolina Feltrin</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Hedman"> Daniel Hedman</a>, <a href="https://publications.waset.org/abstracts/search?q=Farid%20Akhtar"> Farid Akhtar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High entropy ceramic (HEC) materials are characterized by their compositional disorder due to different metallic element atoms occupying the cation position and non-metal elements occupying the anion position. Several studies have focused on the processing and characterization of high entropy carbides and high entropy borides, as these HECs present interesting mechanical and chemical properties. A few studies have been published on HECs containing two non-metallic elements in the composition. Dual-phase high entropy (Ti₀.₂₅V₀.₂₅Zr₀.₂₅Hf₀.₂₅)BxCy ceramics with different amounts of x and y, (0.25 HfC + 0.25 ZrC + 0.25 VC + 0.25 TiB₂), (0.25 HfC + 0.25 ZrC + 0.25 VB2 + 0.25 TiB₂) and (0.25 HfC + 0.25 ZrB2 + 0.25 VB2 + 0.25 TiB₂) were sintered from boride and carbide precursor powders using SPS at 2000°C with holding time of 10 min, uniaxial pressure of 50 MPa and under Ar atmosphere. The sintered specimens formed two HEC phases: a Zr-Hf rich FCC phase and a Ti-V HCP phase, and both phases contained all the metallic elements from 5-50 at%. Phase quantification analysis of XRD data revealed that the molar amount of hexagonal phase increased with increased mole fraction of borides in the starting powders, whereas cubic FCC phase increased with increased carbide in the starting powders. SPS consolidated (Ti₀.₂₅V₀.₂₅Zr₀.₂₅Hf₀.₂₅)BC0.5 and (Ti₀.₂₅V₀.₂₅Zr₀.₂₅Hf₀.₂₅)B1.5C0.25 had respectively 94.74% and 88.56% relative density. (Ti₀.₂₅V₀.₂₅Zr₀.₂₅Hf₀.₂₅)B0.5C0.75 presented the highest relative density of 95.99%, with Vickers hardness of 26.58±1.2 GPa for the borides phase and 18.29±0.8 GPa for the carbides phase, which exceeded the reported hardness values reported in the literature for high entropy ceramics. The SPS sintered specimens containing lower boron and higher carbon presented superior properties even though the metallic composition in each phase was similar to other compositions investigated. Dual-phase high entropy (Ti₀.₂₅V₀.₂₅Zr₀.₂₅H₀.₂₅)BxCy ceramics were successfully fabricated in a boride-carbide solid solution and the amount of boron and carbon was shown to influence the phase fraction, hardness of phases, and density of the consolidated HECs. The microstructure and phase formation was highly dependent on the amount of non-metallic elements in the composition and not only the molar ratio between metals when producing high entropy ceramics with more than one anion in the sublattice. These findings show the importance of further studies about the optimization of the ratio between C and B for further improvements in the properties of dual-phase high entropy ceramics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high-entropy%20ceramics" title="high-entropy ceramics">high-entropy ceramics</a>, <a href="https://publications.waset.org/abstracts/search?q=borides" title=" borides"> borides</a>, <a href="https://publications.waset.org/abstracts/search?q=carbides" title=" carbides"> carbides</a>, <a href="https://publications.waset.org/abstracts/search?q=dual-phase" title=" dual-phase"> dual-phase</a> </p> <a href="https://publications.waset.org/abstracts/137678/dual-phase-high-entropy-ti025v025zr025hf025-bxcy-ceramics-produced-by-spark-plasma-sintering" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/137678.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">172</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=boron%20carbide&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=boron%20carbide&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=boron%20carbide&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=boron%20carbide&page=5">5</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=boron%20carbide&page=6">6</a></li> <li class="page-item"><a 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