Recent advances and issues in development of silicon carbide composites for fusion applications
Recent advances and issues in development of silicon carbide composites for fusion applications
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DOI：
10.1016/j.jnucmat.2008.12.305
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发表时间：
2009-04
影响因子：
3.1
通讯作者：
T. Nozawa;T. Hinoki;A. Hasegawa;A. Kohyama;Y. Katoh;L. Snead;C. Henager;J. Hegeman
中科院分区：
文献类型：
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作者：
T. Nozawa;T. Hinoki;A. Hasegawa;A. Kohyama;Y. Katoh;L. Snead;C. Henager;J. Hegeman
抗辐射先进碳化硅（SiC/SiC）复合材料是高温运行先进聚变堆的一种有希望的候选材料。随着“核级”SiC/SiC复合材料开发的“原理验证”阶段的完成，SiC/SiC复合材料的研究与开发正转向更实用的阶段，即，元器件制造的工业化和数据化。本文综述了（1）包括连接和功能涂层在内的构件制造技术的发展，作为面向等离子体的阻挡层的钨外涂层，（2）非辐照性质表征的最新进展，例如，强度各向异性和与固体锂基陶瓷和铅-锂液态金属增殖剂的化学相容性;（3）辐照效应。重要的是，高温中子辐照对微观结构演变，热传导性和导电性和机械性能，包括纤维/基体界面强度的影响指定在各种辐照条件下，在设计温度范围内的复合材料的性能似乎非常小的影响。
Radiation-resistant advanced silicon carbide (SiC/SiC) composites have been developed as a promising candidate of the high-temperature operating advanced fusion reactor. With the completion of the ‘proof-of-principle’ phase in development of ‘nuclear-grade’ SiC/SiC composites, the R&D on SiC/SiC composites is shifting toward the more pragmatic phase, i.e., industrialization of component manufactures and data-basing. In this paper, recent advances and issues in (1) development of component fabrication technology including joining and functional coating, e.g., a tungsten overcoat as a plasma facing barrier, (2) recent updates in characterization of non-irradiated properties, e.g., strength anisotropy and chemical compatibility with solid lithium-based ceramics and lead-lithium liquid metal breeders, and (3) irradiation effects are specifically reviewed. Importantly high-temperature neutron irradiation effects on microstructural evolution, thermal and electrical conductivities and mechanical properties including the fiber/matrix interfacial strength are specified under various irradiation conditions, indicating seemingly very minor influence on the composite performance in the design temperature range.