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科学网—中南大学文青波/王雅雷/熊翔教授团队:多元超高温纳米复相陶瓷无氧先驱体制备新方法 - 清华大学出版社学术期刊的博文
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中南大学文青波/王雅雷/熊翔教授团队:多元超高温纳米复相陶瓷无氧先驱体制备新方法 <a href="https://blog.sciencenet.cn/blog.php?mod=recommend"><img src="./static/image/blog/recommendico.gif" width="22px" height="22px" /><font style="font-size:14px; color:#930;" face="宋体">精选</font></a> </h1> <p class="xg2"> <span class="xg1">已有 4487 次阅读</span> <span class="xg1">2024-11-27 10:12</span> <span class="pipe">|</span><span class="xg1">个人分类:<a href="https://blog.sciencenet.cn/home.php?mod=space&uid=3534092&do=blog&classid=179507&view=me">JAC</a></span><span class="pipe">|</span><span class="xg1">系统分类:<a href="https://blog.sciencenet.cn/home.php?mod=space&do=blog&view=all&uid=3534092&catid=1">科研笔记</a></span> </p> </div> <div id="blog_article" class="d cl" ><p style="line-height:150%"><span style="font-family: "><span style="font-family:宋体">原文出自</span> </span><a href="https://www.sciopen.com/journal/2226-4108" target="_blank" target="_blank"><em><span style="font-family: ">Journal of Advanced Ceramics</span></em></a><em><span style="font-family: "> </span></em><span style="font-family: ">(<span style="font-family:宋体">先进陶瓷</span>)<span style="font-family:宋体">期刊</span></span></p><p style="text-align:center;line-height:150%"><a href="https://www.sciopen.com/article/10.26599/JAC.2024.9220918" target="_blank" target="_blank"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><img src="http://image.sciencenet.cn/home/202411/27/100913omdkv99g2pqvkogp.png" title="" alt="科学网博客宣传-JAC0918-加精选143.png"/></span></a><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"> </span></p><p style="line-height:150%"><strong><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Cite this article:</span></strong></p><p style="line-height:150%"><a href="https://doi.org/10.26599/JAC.2024.9220918" target="_blank" target="_blank"><span style="text-decoration: underline; font-family: ">Lu L, Wen Q, Hu J, et al. Single-source-precursor synthesis and air-plasma ablation behavior of (Ti,Zr,Hf)C/SiC ceramic nanocomposites at 2200 °C. </span><em><span style="text-decoration: underline; font-family: ">Journal of Advanced Ceramics</span></em><span style="text-decoration: underline; font-family: ">, 2024, 13(7): 1043-1059.</span></a><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"> </span></p><p style="line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">DOI: </span><a href="https://doi.org/10.26599/JAC.2024.9220918" target="_blank" target="_blank"><span style="text-decoration: underline; font-family: ">10.26599/JAC.2024.9220918</span></a></p><p style="line-height:150%"><strong><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">ResearchGate:</span></strong></p><p style=";line-height:150%"><a href="https://www.researchgate.net/publication/381187261_Single-source-precursor_synthesis_and_air-plasma_ablation_behavior_of_TiZrHfCSiC_ceramic_nanocomposites_at_2200_C" target="_blank" target="_blank"><span style="text-decoration: underline; font-family: ">https://www.researchgate.net/publication/381187261_Single-source-precursor_synthesis_and_air-plasma_ablation_behavior_of_TiZrHfCSiC_ceramic_nanocomposites_at_2200_C</span></a></p><p style="line-height:150%"><span style=";font-family:宋体;line-height:150%;font-size:16px"> </span></p><p style="line-height:150%"><strong><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">1<span style="font-family:宋体">、</span></span></strong><strong><span style="line-height: 150%; font-size: 16px; background: #FFFFFF; font-family: 宋体;">导读</span></strong></p><p style="text-indent:32px;line-height:150%"><span style="font-family: 宋体;line-height: 150%;font-size: 16px">纳米复相陶瓷因其显著提升的力学性能、耐磨性与耐腐蚀性、高温稳定性与热化学稳定性等,在能源、化工、交通、航空航天、军工等多个领域具有广阔的应用前景。</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">然而</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">,</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">由于纳米粉体易团聚且在</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">高温</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">烧结过程晶粒容易</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">快速</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">长大,因此</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">传统方法很难</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">制备出</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">在超高温热防护领域具有很好的应用潜力的</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">致密</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">超高温</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">纳米复相陶瓷。</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">作为聚合物先驱体陶瓷领域最新研究成果,无氧</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">单源先驱体法通过</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">先驱体分子结构</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">设计,在制备成分均匀</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px"><span style="font-family:Times New Roman">/</span><span style="font-family:宋体">可调且晶粒大小可控</span></span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">的</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">超高温</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">纳米复相陶瓷上表现出</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">了</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">巨大的优势。本文采用</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">无氧</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">单源先驱体法</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">结合放电等离子烧结技术</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">制备出</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">了一系列</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">致密的</span>(Ti,Zr,Hf)C/SiC</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">超高温</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">纳米复相陶瓷,并研究了其在</span>2200℃<span style="font-family:宋体">等离子体</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">中的</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">烧蚀行为和机理</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">,</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">为新一代高速飞行器热防护材料</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">的研制</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">提供</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">了</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">新</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">的</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">思路。</span></p><p style="line-height:150%"><strong><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">2<span style="font-family:宋体">、</span></span></strong><strong><span style="line-height: 150%; font-size: 16px; background: #FFFFFF; font-family: 宋体;">研究背景</span></strong></p><p style="text-indent:32px;line-height:150%"><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">超高温陶瓷因其高硬度、高熔点、优异的</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">耐烧蚀性能等</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">在热防护领域备受关注。其中,碳化铪</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">因</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">具有</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">超高</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">熔点(</span>3890°C<span style="font-family:宋体">)</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">以及</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">优异的</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">热</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">物理</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">化学</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">特性,</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">且</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">其氧化物二氧化铪</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">(</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">熔点</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">:</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">2800℃</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">)</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">在超高温空气动力环境(</span>>2500℃<span style="font-family:宋体">)下</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">可</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">保持结构稳定性</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">,因此</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">被认为是一种</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">非常有应用价值</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">的抗烧蚀材料。然而,碳化铪</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px"><span style="font-family:宋体">在</span><span style="font-family:Times New Roman">500-1800</span><span style="font-family:宋体">℃范围内易被氧化形成多孔氧化物,抗氧化性能不佳,因此</span></span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">无法在较宽的温域</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">内</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">提供有效保护</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">。此外,</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">碳化铪密度较</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">大</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">、价格昂贵</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">,严重</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">阻碍了其</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">实际</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">应用。为了</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">扩宽该类陶瓷的应用温域并降低成本</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">,</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">研究人员</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">提出</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">了多元化(即形成多元固溶体)和复相化(引入第二或第三相)两种策略</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">。</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">因此</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">,多元超高温</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">复相陶瓷的制备以及抗烧蚀性能</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">成为</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">了近期的</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">研究热点。本文</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">基于聚合物先驱体陶瓷领域最新研究成果,</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">采用</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">无氧</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">单源先驱体法结合放电等离子烧结</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">技术成功</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">制备了四种不同组分的致密</span>(Ti,Zr,Hf)C/SiC</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">超高温</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">纳米复相陶瓷。通过</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">无氧</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">单源先驱体的分子</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">结构</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">设计,</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">实现了对复相陶瓷中超高温陶瓷相的含量、</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">金属原子</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">个数</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">比</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">的</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">有效</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">调控,提升了</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">其高温抗烧蚀性能,</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">并阐明了耐烧蚀机理,</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">为新一代高速飞行器热防护材料</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">的研制</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">提供</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">了</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">新</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">的</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">思路。</span></p><p style="line-height:150%"><strong><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">3<span style="font-family:宋体">、文章亮点</span></span></strong></p><p style="line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">(</span>1<span style="font-family:宋体">)通过采用</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">无氧先驱体</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">乙烯基聚碳硅烷与三种分别含钛、锆、铪的</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">无氧</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">小分子金属配合物反应制备出</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">同时</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">含钛锆铪的硅基单源先驱体,进而得到</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">了</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">致密</span>(Ti,Zr,Hf)C/SiC</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">超高温</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">纳米复相陶瓷,</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">并</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">首次研究</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">了无氧</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">单源先驱体法制备的纳米复相陶瓷在</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">超高温条件</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">下的抗烧蚀性能。</span></p><p style="line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">(</span>2<span style="font-family:宋体">)在以往研究中,</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">无氧</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">单源先驱体中过渡金属配合物与</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">硅基聚合物</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">的投料比</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">通常低于</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">3<span style="font-family:宋体">:</span><span style="font-family:Times New Roman">7</span><span style="font-family:宋体">(质量比),</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px"><span style="font-family:宋体">超高温陶瓷相含量小于</span><span style="font-family:Times New Roman">25wt%</span><span style="font-family:宋体">,</span></span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">本研究中首次将</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">投料比</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">提升到</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">了</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">7<span style="font-family:宋体">:</span><span style="font-family:Times New Roman">3</span><span style="font-family:宋体">,</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">并</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">得到</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px"><span style="font-family:宋体">了陶瓷产率大于</span><span style="font-family:Times New Roman">70%</span><span style="font-family:宋体">且超高温陶瓷相含量≥</span></span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">60</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px"> <span style="font-family:Times New Roman">wt</span></span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">%</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px"> </span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">纳米复相陶瓷,</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">这打破了有关先驱体改性无法大幅度提高超高温陶瓷相含量的传统认知,具有很好的实际应用前景</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">。</span></p><p style="line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">(</span>3<span style="font-family:宋体">)制备出的</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">纳米复相陶瓷在</span><span style="font-family:Times New Roman">2200°C</span><span style="font-family:宋体">表现出优异的抗烧蚀性能,线烧蚀率仅为</span><span style="font-family:Times New Roman">-0.58μm/s</span><span style="font-family:宋体">,</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">表现出非烧蚀特征,</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">这主要得益于形成了微</span>/<span style="font-family:宋体">纳米尺度的高熔点</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">多元</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">(Ti,Zr,Hf)O</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">相与低熔点</span>(Zr,Hf)TiO</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">4</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">、</span>SiO</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">相均匀分布的致密且稳定的氧化层。</span></p><p style="line-height:150%"><strong><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">4<span style="font-family:宋体">、研究结果及结论</span></span></strong></p><p style="text-indent:32px;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">采用单源先驱体法结合放电等离子烧结工艺,制备了四组具有不同金属摩尔比的超高温纳米复相陶瓷:</span>(Ti</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.33</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.33</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.33</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">、</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">、</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.25</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.375</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.375</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">和</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.25</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.25</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">,分别命名为:</span><span style="font-family:Times New Roman">T1Z1H1</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">T2Z3H5</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">T2Z3H3</span><span style="font-family:宋体">和</span><span style="font-family:Times New Roman">T1Z2H1</span><span style="font-family:宋体">。</span></span></p><p style="text-indent:32px;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">通过透射电镜对</span>1600℃<span style="font-family:宋体">热处理后粉末样品的显微组织进行了研究</span><span style="font-family:Times New Roman">(</span><span style="font-family:宋体">图</span><span style="font-family:Times New Roman">1)</span><span style="font-family:宋体">。</span><span style="font-family:Times New Roman">TEM</span><span style="font-family:宋体">显示,</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)C</span><span style="font-family:宋体">和</span><span style="font-family:Times New Roman">β-SiC</span><span style="font-family:宋体">晶粒均匀混合,且</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)C</span><span style="font-family:宋体">晶粒被一层无定形碳层包裹形成</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)C@C</span><span style="font-family:宋体">核壳结构,在高温过程中,碳层起到了扩散屏障的作用,阻止了纳米晶粒的生长。除了</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)C</span><span style="font-family:宋体">和</span><span style="font-family:Times New Roman">β-SiC</span><span style="font-family:宋体">外,还可以发现一些游离碳</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">条</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">与</span>(Ti,Zr,Hf)C@C<span style="font-family:宋体">颗粒相连。</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">通过</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">对</span>(Ti,Zr,Hf)C<span style="font-family:宋体">晶粒尺寸进行统计,可证实通过单源先驱体法</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">成功</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">制备出了超高温纳米复相陶瓷。</span></p><p style="text-align:center;line-height:150%"><span style="font-family: "> <img src="http://image.sciencenet.cn/home/202411/27/101000axfx5xmwzfx5r1f1.png" title="" alt="科学网博客宣传-JAC0918-加精选2612.png"/></span></p><p style="margin-bottom: 10px; line-height: 150%; text-align: center;"><span style="color: #7F7F7F;"><span style="color: #7F7F7F; font-family: "><span style="color: #7F7F7F; font-family: 宋体;">图</span>1. TZH-1600</span><span style="color: #7F7F7F; font-family: 宋体; line-height: 150%; font-size: 14px;">纳米复相</span><span style="line-height: 150%; font-size: 14px; color: #7F7F7F; font-family: 宋体;">陶瓷的</span><span style="color: #7F7F7F; font-family: 宋体; line-height: 150%; font-size: 14px;">透射电镜明</span><span style="color: #7F7F7F; font-family: "><span style="color: #7F7F7F; font-family: 宋体;">场像、高分辨图像和</span>(Ti,Zr,Hf)C<span style="color: #7F7F7F; font-family: 宋体;">晶粒尺寸直方图</span></span></span></p><p style="text-indent:32px;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">为了研究</span>(Ti,Zr,Hf)C/SiC<span style="font-family:宋体">陶瓷纳米复合材料的烧蚀性能和烧蚀机理,对其进行了</span><span style="font-family:Times New Roman">2200℃</span><span style="font-family:宋体">等离子烧蚀测试。烧蚀实验前后的样品如图</span><span style="font-family:Times New Roman">2(a)</span><span style="font-family:宋体">所示,经高温烧蚀后,烧蚀试样的颜色和表面形貌发生了明显变化,但没有观察到显现的烧蚀坑。其中,</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">样品烧蚀后出现白色且连续的氧化层,并与基体紧密结合,表明其具有出色的抗等离子体侵蚀能力。由图</span><span style="font-family:Times New Roman">2(c)</span><span style="font-family:宋体">也可知,</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">表现出</span><span style="font-family:Times New Roman">“</span><span style="font-family:宋体">非烧蚀</span><span style="font-family:Times New Roman">”</span><span style="font-family:宋体">特性,质量烧蚀速率和线性烧蚀速率分别为</span><span style="font-family:Times New Roman">-0.13mg/s</span><span style="font-family:宋体">和</span><span style="font-family:Times New Roman">-0.58μm/s</span><span style="font-family:宋体">,这表明其质量和厚度在烧蚀后有所增加,意味着</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">表面形成的氧化层在高温高速气流侵蚀环境下更加稳定,从而表现出优异的抗烧蚀性。烧蚀样品表面的物相主要由新形成的</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)O</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">、</span>(Zr,Hf)TiO</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">4</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">固溶体以及残留的</span>(Ti,Zr,Hf)C<span style="font-family:宋体">和</span><span style="font-family:Times New Roman">β-SiC</span><span style="font-family:宋体">组成,四个样品中均未检测到</span><span style="font-family:Times New Roman">SiO</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">相的反射峰,这是由于冷却速度较快,导致其结晶时间不足最终以玻璃态沉积在样品表面。</span></p><p style="text-align:center;line-height:150%"><span style="font-family: "> <img src="http://image.sciencenet.cn/home/202411/27/101040hj6exfescc5is3tx.png" title="" alt="科学网博客宣传-JAC0918-加精选3133.png"/></span></p><p style="margin-bottom:10px;text-align:center;line-height:150%"><span style="font-family: "><span style="line-height: 150%; font-size: 14px; color: #7F7F7F; font-family: 宋体;">图</span>2. (a)<span style="line-height: 150%; font-size: 14px; color: #7F7F7F; font-family: 宋体;">烧蚀前后样品图像,</span>(b)<span style="line-height: 150%; font-size: 14px; color: #7F7F7F; font-family: 宋体;">烧蚀曲线,</span>(c)<span style="line-height: 150%; font-size: 14px; color: #7F7F7F; font-family: 宋体;">质量和线性烧蚀率,</span>(d)<span style="line-height: 150%; font-size: 14px; color: #7F7F7F; font-family: 宋体;">烧蚀样品表面</span>XRD<span style="line-height: 150%; font-size: 14px; color: #7F7F7F; font-family: 宋体;">图</span></span></p><p style="text-indent:32px;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">图</span>3<span style="font-family:宋体">为烧蚀样品中心区域的</span><span style="font-family:Times New Roman">SEM</span><span style="font-family:宋体">图像,在烧蚀过程中,中心区域的热通量最强。由图可知</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">样品的中心区域较为光滑,由熔融相和均匀分散的白色</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)O</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">颗粒组成。这些混合氧化物具有合适的粘度,可以完全填满烧蚀中心区域,只留下气体产物逸出所留下的空穴。四种样品烧蚀中心区域的低倍</span>SEM<span style="font-family:宋体">图显示(图</span><span style="font-family:Times New Roman">3(a)</span><span style="font-family:宋体">,</span><span style="font-family:Times New Roman">3(d)</span><span style="font-family:宋体">,</span><span style="font-family:Times New Roman">3(g)</span><span style="font-family:宋体">,</span><span style="font-family:Times New Roman">3(j)</span><span style="font-family:宋体">),</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">中的</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)O</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">颗粒尺寸较小,几乎没有聚集。由于钉扎效应的作用,熔融相中存在高熔点</span>(Ti,Zr,Hf)O</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">氧化物会增加氧化层的粘度,阻碍氧原子的扩散。另外,</span>(Ti</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">中</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)O</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">颗粒在熔融相中的均匀分布主要与其成分中</span>(Zr+Hf)<span style="font-family:宋体">含量较高、</span><span style="font-family:Times New Roman">Ti</span><span style="font-family:宋体">含量较低有关,即:</span><span style="font-family:Times New Roman">Zr</span><span style="font-family:宋体">和</span><span style="font-family:Times New Roman">Hf</span><span style="font-family:宋体">较低的扩散系数阻碍了</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)O</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">颗粒的团聚。因此,充分说明了单源先驱体法制备的纳米复相陶瓷中,过渡金属元素的比例对于其氧化层的结构以及抗烧蚀性能具有非常大的影响,我们可以通过调控合适的元素比例来获得更好的抗烧蚀性能。</span></p><p style="text-align:center;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"> <img src="http://image.sciencenet.cn/home/202411/27/101026wr9rwwrqqwssgw9q.png" title="" alt="科学网博客宣传-JAC0918-加精选3678.png"/></span></p><p style="margin-bottom:10px;text-align:center;line-height:150%"><span style="font-family: "><span style="line-height: 150%; font-size: 14px; font-family: 宋体;">图</span>3. <span style="line-height: 150%; font-size: 14px; font-family: 宋体;">烧蚀后样品表面中心区域的</span>SEM<span style="line-height: 150%; font-size: 14px; font-family: 宋体;">图和</span>EDS<span style="line-height: 150%; font-size: 14px; font-family: 宋体;">结果</span></span></p><p style="text-indent:32px;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">图</span>4<span style="font-family:宋体">是烧蚀后样品的截面</span><span style="font-family:Times New Roman">SEM</span><span style="font-family:宋体">图,由图可知四种样品的氧化层厚度分别为</span><span style="font-family:Times New Roman">25</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">75</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">80</span><span style="font-family:宋体">和</span><span style="font-family:Times New Roman">82</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px"> </span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:Times New Roman">μm</span><span style="font-family:宋体">。另外,还可以看到</span><span style="font-family:Times New Roman">A-T1Z1H1</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">A-T2Z3H3</span><span style="font-family:宋体">和</span><span style="font-family:Times New Roman">A-T1Z2H1</span><span style="font-family:宋体">截面仍存在尺寸较大、不均匀的</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)O</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">颗粒聚集,而</span>A-T2Z3H5<span style="font-family:宋体">截面则以均匀分散的小颗粒氧化物为主。</span><span style="font-family:Times New Roman">A-T1Z1H1</span><span style="font-family:宋体">氧化层厚度较小是因为其氧化层在高速气流作用下的热稳定性较差,发生了氧化层的脱落分离。在</span><span style="font-family:Times New Roman">A-T2Z3H3</span><span style="font-family:宋体">和</span><span style="font-family:Times New Roman">A-T1Z2H1</span><span style="font-family:宋体">的截面图中可以发现较大的孔洞,这是由于白色氧化物相的高度聚集,使得液相难以流动、填充。</span></span></p><p style="text-align:center;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"> <img src="http://image.sciencenet.cn/home/202411/27/101119ddbejga55uw5d0jk.png" title="" alt="科学网博客宣传-JAC0918-加精选3960.png"/></span></p><p style="margin-bottom:10px;text-align:center;line-height:150%"><span style="font-family: "><span style="line-height: 150%; font-size: 14px; font-family: 宋体;">图</span>4. <span style="line-height: 150%; font-size: 14px; font-family: 宋体;">烧蚀后样品截面的</span>SEM<span style="line-height: 150%; font-size: 14px; font-family: 宋体;">和</span>EDS<span style="line-height: 150%; font-size: 14px; font-family: 宋体;">图</span></span></p><p style="line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">图</span>5<span style="font-family:宋体">比较了本研究中</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">纳米复相陶瓷与其他多元碳化物陶瓷、复相碳化物陶瓷和含多元超高温陶瓷涂层的复合材料的质量和线烧蚀率,其中,</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">样品表现出优异的抗烧蚀性能。</span></span></p><p style="line-height: 150%; text-align: center;"><span style="font-family: 宋体;line-height: 150%;font-size: 16px"> </span><span style="font-family: "> <img src="http://image.sciencenet.cn/home/202411/27/101104rwxbdnxneq4uabbn.png" title="" alt="科学网博客宣传-JAC0918-加精选4105.png"/></span></p><p style="margin-bottom:10px;text-align:center"><span style="color: #7F7F7F;"><span style="font-family: "><span style="font-family: 宋体;">图</span>5. (Ti</span><sub><span style="font-family: ">0.2</span></sub><span style="font-family: ">Zr</span><sub><span style="font-family: ">0.3</span></sub><span style="font-family: ">Hf</span><sub><span style="font-family: ">0.5</span></sub><span style="font-family: ">)C/SiC<span style="font-family: 宋体;">的质量和线性烧蚀率与文献中其他多元碳化物陶瓷、复相碳化物陶瓷和含多元超高温陶瓷涂层的复合材料的比较</span></span></span></p><p style="text-indent:32px;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">(Ti,Zr,Hf)C/SiC<span style="font-family:宋体">复合材料的烧蚀机理如图</span><span style="font-family:Times New Roman">6</span><span style="font-family:宋体">所示,在热流密度、剧烈氧化和机械冲刷的共同作用下,</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)C/SiC</span><span style="font-family:宋体">纳米陶瓷复合材料表面形成致密的氧化层。过渡族金属元素</span><span style="font-family:Times New Roman">Ti</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">Zr</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">Hf</span><span style="font-family:宋体">与</span><span style="font-family:Times New Roman">Si</span><span style="font-family:宋体">元素的协同作用形成了由高熔点</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)O</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">氧化物骨架和填充液相</span>(Zr,Hf)TiO</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">4</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">、玻璃态</span>SiO</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">组成的独特氧化层结构。由于初始碳化物中金属原子的比例不同,在烧蚀氧化过程中形成了具有不同金属原子比的</span>(Ti,Zr,Hf)O</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">氧化物。其中,</span>(Ti</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">因其较高</span><span style="font-family:Times New Roman">(Zr+Hf)</span><span style="font-family:宋体">含量和较低</span><span style="font-family:Times New Roman">Ti</span><span style="font-family:宋体">含量,在烧蚀中心表现出不同的氧化层结构,这种结构是由于</span><span style="font-family:Times New Roman">Ti</span><span style="font-family:宋体">含量减少,扩散系数较高,</span><span style="font-family:Times New Roman">(Zr+Hf)</span><span style="font-family:宋体">比例增加,扩散系数较低导,</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)O</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">纳米</span>/<span style="font-family:宋体">微粒均匀地分散在整个熔融相中,防止了任何明显的氧化物颗粒聚集。值得注意的是,</span><span style="font-family:Times New Roman">(Ti,Zr,Hf)O</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">纳米</span>/<span style="font-family:宋体">微粒还可以通过钉扎效应调节玻璃相的粘度。本论文研究结果表明氧化物组成的优化,以及具有不同熔点的氧化物的形成,导致了独特且非常有益的氧化层结构的生成,这种结构有效地防止了氧原子侵入并增强机械冲刷,最终使</span><span style="font-family:Times New Roman">(Ti</span></span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.2</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Zr</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.3</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Hf</span><sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px;vertical-align: sub">0.5</span></sub><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">)C/SiC<span style="font-family:宋体">表现出优异的抗烧蚀性能。</span></span></p><p style="text-align:center;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"> <img src="http://image.sciencenet.cn/home/202411/27/101131ejt3iiky28i0jkim.png" title="" alt="科学网博客宣传-JAC0918-加精选4716.png"/></span></p><p style="margin-bottom:10px;text-align:center"><span style="font-family: "><span style="font-size: 14px; font-family: 宋体;">图</span>6. (Ti,Zr,Hf)C/SiC<span style="font-size: 14px; font-family: 宋体;">纳米复合材料烧蚀机理示意图:</span>(a)A-T2Z3H5<span style="font-size: 14px; font-family: 宋体;">,</span>(b)A-T1Z1H1<span style="font-size: 14px; font-family: 宋体;">,</span>A-T2Z3H3<span style="font-size: 14px; font-family: 宋体;">和</span>A-T1Z2H1<span style="font-size: 14px; font-family: 宋体;">,</span>(c)<span style="font-size: 14px; font-family: 宋体;">烧蚀区温度图</span></span></p><p style="margin-bottom: 10px;"><span style="font-family: "><span style="font-size: 14px; font-family: 宋体;"></span></span></p><p style="line-height:150%"><strong><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">5<span style="font-family:宋体">、作者及研究团队简介</span></span></strong></p><p style="text-align:center;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"> <img src="http://image.sciencenet.cn/home/202411/27/101145r9y233xmqd6s366r.png" title="" alt="科学网博客宣传-JAC0918-加精选4816.png"/></span></p><p style="line-height:150%"><strong><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">文青波(通讯作者)</span></strong><strong><span style="font-family: 宋体;line-height: 150%;font-size: 16px">,</span></strong><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">中南大学</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">粉末冶金国家重点实验室</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">教授</span>/<span style="font-family:宋体">博导,</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px"><span style="font-family:宋体">中南大学“升华学者计划”青年拔尖人才,长期从事聚合物先驱体陶瓷、高温陶瓷基复合材料、电磁吸波材料等应用基础研究。主持</span><span style="font-family:Times New Roman">/</span><span style="font-family:宋体">完成中国国家自然科学基金项目</span><span style="font-family:Times New Roman">3</span><span style="font-family:宋体">项,德国大型研究集群种子项目</span><span style="font-family:Times New Roman">1</span><span style="font-family:宋体">项和优秀青年学者桥梁基金</span><span style="font-family:Times New Roman">1</span><span style="font-family:宋体">项,作为主要人员参与欧盟重大专项</span><span style="font-family:Times New Roman">1</span><span style="font-family:宋体">项、德国自然科学基金(</span><span style="font-family:Times New Roman">DFG</span><span style="font-family:宋体">)项目</span><span style="font-family:Times New Roman">3</span><span style="font-family:宋体">项。受邀担任</span><span style="font-family:Times New Roman">Science, J. Am. Ceram. Soc.</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">J. Euro. Ceram. Soc.</span><span style="font-family:宋体">等多个期刊审稿人,并被邀请为</span><span style="font-family:Times New Roman">Prog. Mater. Sci.</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">Inter. Mater. Rev. </span><span style="font-family:宋体">和</span><span style="font-family:Times New Roman">J. Adv. Ceram.</span><span style="font-family:宋体">等国际顶级期刊撰写综述。多次在国内重大、国际重要会议作邀请报告,并担任大型国际会议分会主席或共同召集人。已在</span><span style="font-family:Times New Roman">Progress in Materials Science</span><span style="font-family:宋体">(</span><span style="font-family:Times New Roman">IF2021 = 48.16</span><span style="font-family:宋体">)、</span><span style="font-family:Times New Roman">International Materials Reviews</span><span style="font-family:宋体">(</span><span style="font-family:Times New Roman">IF2021 = 15.75</span><span style="font-family:宋体">)、</span><span style="font-family:Times New Roman">ACS Catalysis</span><span style="font-family:宋体">(</span><span style="font-family:Times New Roman">IF2021 = 13.70</span><span style="font-family:宋体">)、</span><span style="font-family:Times New Roman">J. Adv. Ceram.</span><span style="font-family:宋体">(</span><span style="font-family:Times New Roman">IF2021 = 11.53</span><span style="font-family:宋体">)、</span><span style="font-family:Times New Roman">Corr. Sci.</span><span style="font-family:宋体">(</span><span style="font-family:Times New Roman">IF2021 = 7.72</span><span style="font-family:宋体">)、</span><span style="font-family:Times New Roman">J. Am. Ceram. Soc.</span><span style="font-family:宋体">(</span><span style="font-family:Times New Roman">IF2021 = 4.18</span><span style="font-family:宋体">)和</span><span style="font-family:Times New Roman">J. Euro. Ceram. Soc. </span><span style="font-family:宋体">(</span><span style="font-family:Times New Roman">IF2021 = 6.36</span><span style="font-family:宋体">)等材料和陶瓷类国际权威期刊上发表</span><span style="font-family:Times New Roman">SCI</span><span style="font-family:宋体">论文</span><span style="font-family:Times New Roman">60</span><span style="font-family:宋体">余篇,他引</span><span style="font-family:Times New Roman">2000</span><span style="font-family:宋体">余次。</span></span></p><p style="text-align:center;line-height:150%"><strong><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><img src="http://image.sciencenet.cn/home/202411/27/101151gxjywkyngw1itkq5.png" title="" alt="科学网博客宣传-JAC0918-加精选5466.png"/> </span></strong></p><p style="line-height:150%"><strong><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">王雅雷(通讯作者)</span></strong><span style="font-family: 宋体;line-height: 150%;font-size: 16px">,</span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">中南大学副研究员</span>/<span style="font-family:宋体">博土生导师,有色金属先进结构材料与制造协同创新中心平台骨干成员,科技部重点领域创新团队骨干人员。主要从事高性能碳基复合材料、粉末冶金特种粉体材料相关领域的科学研究和应用开发工作,重点研究方向包括高性能碳</span><span style="font-family:Times New Roman">/</span><span style="font-family:宋体">碳复合材料及大尺寸异形构件研制、高性能碳</span><span style="font-family:Times New Roman">/</span><span style="font-family:宋体">陶复合材料、超高温耐烧蚀陶瓷涂层、特种高纯陶瓷粉体等,主持和承担国家自然科学基金项目等各类横向</span></span><span style="font-family: 宋体;line-height: 150%;font-size: 16px"><span style="font-family:Times New Roman">/</span><span style="font-family:宋体">纵向</span></span><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">项目</span>30<span style="font-family:宋体">多项,参与国家重点基础研究计划(</span><span style="font-family:Times New Roman">973</span><span style="font-family:宋体">计划)项目、科技部国际合作项目</span><span style="font-family:Times New Roman">20</span><span style="font-family:宋体">余项,在热防护系统炭</span><span style="font-family:Times New Roman">/</span><span style="font-family:宋体">陶梯度复合材料,轨道交通高性能炭</span><span style="font-family:Times New Roman">/</span><span style="font-family:宋体">陶制动材料,碳基复合材料超高温耐烧蚀陶瓷涂层等方面,解决了一系列民用领域关键新材料的技术难题。</span></span></p><p style="text-align:center;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><img src="http://image.sciencenet.cn/home/202411/27/101158qg2snunwmbpzmtgq.png" title="" alt="科学网博客宣传-JAC0918-加精选5777.png"/> </span></p><p style="line-height:150%"><strong><span style="font-family: 宋体;line-height: 150%;font-size: 16px">熊翔</span></strong><strong><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">(</span></strong><strong><span style="font-family: 宋体;line-height: 150%;font-size: 16px">团队负责人</span></strong><strong><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">)</span></strong><span style="font-family: 宋体;line-height: 150%;font-size: 16px"><span style="font-family:宋体">,中南大学教授</span><span style="font-family:Times New Roman">/</span><span style="font-family:宋体">博土生导师,</span><span style="font-family:宋体">第七届国务院学位委员会材料学科评议组成员,国务院政府特殊津贴获得者,科技部创新人才推进计划重点领域创新团队领衔人,国家“</span><span style="font-family:Times New Roman">973</span><span style="font-family:宋体">”、“</span><span style="font-family:Times New Roman">173</span><span style="font-family:宋体">”重点项目首席科学家,长期从事航空航天新材料研究与应用开发工作,主要有碳</span><span style="font-family:Times New Roman">/</span><span style="font-family:宋体">碳复合材料、高温陶瓷复合材料、粉末冶金材料等新材料与制备新技术。承担了</span><span style="font-family:Times New Roman">973</span><span style="font-family:宋体">项目</span><span style="font-family:Times New Roman">2</span><span style="font-family:宋体">项、</span><span style="font-family:Times New Roman">863</span><span style="font-family:宋体">项目</span><span style="font-family:Times New Roman">5</span><span style="font-family:宋体">项、国际合作项目</span><span style="font-family:Times New Roman">4</span><span style="font-family:宋体">项、自然科学基金项目</span><span style="font-family:Times New Roman">4</span><span style="font-family:宋体">项等多项课题科研任务,解决了一系列航空航天和民用关键新材料的技术难题,形成了多项重大创新成果,为我国国防现代化建设和国民经济建设做出了突出的贡献,荣获国家技术发明一等奖</span><span style="font-family:Times New Roman">1</span><span style="font-family:宋体">项(排名</span><span style="font-family:Times New Roman">2</span><span style="font-family:宋体">)、二等奖各</span><span style="font-family:Times New Roman">1</span><span style="font-family:宋体">项(排名</span><span style="font-family:Times New Roman">1</span><span style="font-family:宋体">),省部级科技进步一等奖</span><span style="font-family:Times New Roman">5</span><span style="font-family:宋体">项。</span></span></p><p style="text-align:center;line-height:150%"><img src="http://image.sciencenet.cn/home/202411/27/101208b8escqc0mt4ismcq.png" title="" alt="科学网博客宣传-JAC0918-加精选6120.png"/></p><p style="line-height:150%"><strong><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">卢丽(第一作者)</span></strong><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">,中南大学粉末冶金研究院博士研究生,研究方向为聚合物转化陶瓷,超高温陶瓷及</span><span style="font-family: 宋体;line-height: 150%;font-size: 16px">其</span><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">复合材料。</span></p><p style="line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"> </span></p><p style="line-height:150%"><strong><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">《先进陶瓷(英文)》(</span></strong><strong><em><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px">Journal of Advanced Ceramics</span></em></strong><strong><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">)</span></strong><strong><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">期刊简介</span></strong></p><p style="text-indent:32px;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"><span style="font-family:宋体">《先进陶瓷(英文)》于</span>2012<span style="font-family:宋体">年创刊,清华大学主办,清华大学出版社出版,由清华大学材料学院新型陶瓷与精细工艺国家重点实验室提供学术支持,主编为中国工程院院士、清华大学李龙土教授。该刊主要发表先进陶瓷领域的高质量原创性研究和综述类学术论文,涉及先进陶瓷的制备、结构表征、性能评价的各个细节,尤其侧重新材料研制和先进陶瓷基础科学研究等重要方面,致力于在世界先进陶瓷领域搭建学术交流平台,引领和促进先进陶瓷学科的发展。已被</span><span style="font-family:Times New Roman">SCIE</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">Ei Compendex</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">Scopus</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">DOAJ</span><span style="font-family:宋体">、</span><span style="font-family:Times New Roman">CSCD</span><span style="font-family:宋体">等数据库收录。现为月刊,年发文量近</span><span style="font-family:Times New Roman">200</span><span style="font-family:宋体">篇,</span><span style="font-family:Times New Roman">2024</span><span style="font-family:宋体">年</span><span style="font-family:Times New Roman">6</span><span style="font-family:宋体">月发布的影响因子为</span><span style="font-family:Times New Roman">18.6</span><span style="font-family:宋体">,位列</span><span style="font-family:Times New Roman">Web of Science</span><span style="font-family:宋体">核心合集中</span><span style="font-family:Times New Roman">“</span><span style="font-family:宋体">材料科学,陶瓷</span><span style="font-family:Times New Roman">”</span><span style="font-family:宋体">学科</span><span style="font-family:Times New Roman">31</span><span style="font-family:宋体">种同类期刊第</span><span style="font-family:Times New Roman">1</span><span style="font-family:宋体">名。</span><span style="font-family:Times New Roman">2019</span><span style="font-family:宋体">年入选</span><span style="font-family:Times New Roman">“</span><span style="font-family:宋体">中国科技期刊卓越行动计划</span><span style="font-family:Times New Roman">”</span><span style="font-family:宋体">梯队期刊项目。</span></span></p><p style="text-indent:32px;line-height:150%"><span style="font-family: 'Times New Roman';line-height: 150%;font-size: 16px"> </span></p><p style="line-height:150%"><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">期刊主页:</span><a href="https://www.sciopen.com/journal/2226-4108" target="_blank" target="_blank"><span style="text-decoration: underline; font-family: ">https://www.sciopen.com/journal/2226-4108</span></a></p><p style="line-height:150%"><span style="line-height: 150%; font-size: 16px; font-family: 宋体;">投稿地址:</span><span style="text-decoration: underline; font-family: ">https://mc03.manuscriptcentral.com/jacer</span></p><p></p> <br /><br /> <label style="font-size:13px; color:#850f0f">转载本文请联系原作者获取授权,同时请注明本文来自清华大学出版社学术期刊科学网博客。<br />链接地址:</label><a href="https://blog.sciencenet.cn/blog-3534092-1461889.html" target="_blank" style="font-size:13px; color:#850f0f">https://blog.sciencenet.cn/blog-3534092-1461889.html </a> <br /><br />上一篇:<a href='blog-3534092-1461884.html' target='_black'>《先进陶瓷(英文)》主编随笔|组织“前言”有点类似于逛网店 (2):如何解决科学问题</a><br />下一篇:<a href='blog-3534092-1462077.html' target='_black'>《先进陶瓷(英文)》主编随笔 | 为前言加上参考文献 —— 以一篇虚构的“前言”为例</a> <!--大赛结束--> </div> <div id="click_div"><table cellpadding="0" cellspacing="0" class="atd"> <tr></tr> </table> <script type="text/javascript"> function errorhandle_clickhandle(message, values) { if(values['id']) { showCreditPrompt(); 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