液态锂铅与阻氚涂层材料相容性的研究进展  

Review on Compatibility of Liquid Lithium-Lead with Tritium Permeation Barrier

作　　者：申昕 徐玉平 吕一鸣 周海山 罗广南[1,2] SHEN Xin;XU Yuping;LYU Yiming;ZHOU Haishan;LUO Guangnan(Institute of Plasma Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院合肥物质科学研究院,等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026

出　　处：《材料导报》2023年第1期1-8,共8页Materials Reports

基　　金：国家磁约束核聚变能发展研究专项资助(2019YFE03130004);国家自然科学基金(11905246)。

摘　　要：在聚变堆液态锂铅包层设计中,结构材料表面需覆盖一层阻氚涂层。涂层一般需要兼顾两方面功能:(1)高阻氢渗透因子,能够稳定地抑制氢渗透以维持反应堆的氚安全;(2)较高的耐腐蚀性能,以保证结构材料的结构完整性及热力学性能稳定性。阻氚涂层与锂铅直接接触会发生腐蚀,产生缺陷(如腐蚀坑等),影响涂层结构稳定性和阻氢渗透效率,进而直接影响涂层的服役寿命。本文重点综述了液态锂铅与阻氚涂层的相容性以及液态锂铅腐蚀对阻氚涂层阻氢性能影响的相关研究进展。已有的研究显示,Cr_(2)O_(3)-Er_(2)O_(3)-ZrO_(2)涂层、铝基涂层等在静止液态锂铅环境中均展现了良好的相容性和稳定的阻氢性能。本文还指出了目前相关研究存在的共性问题及未来可能的研究发展趋势。相关领域还需进行更为全面、系统的研究,为未来聚变增殖包层中阻氚涂层的服役寿命评估提供支撑。In the design of a liquid lithium-lead blanket in fusion reactor,a layer that has high permeation reduction factor should be prepared on the surface of the structural materials as tritium permeation barrier(TPB).TPBs could not only reduce hydrogen isotope permeability for the safety concern of the tritium,but also have great corrosion resistance to maintain the structural integrity and the stability of thermodynamic property of structural materials.TPB that directly contacts with liquid metals will be corroded,resulting in defects(such as corrosion pits,etc.)which straightly affect its service life.In this paper,the compatibility of liquid lithium-lead with TPB,together with the hydrogen isotope permeation resistance property of the barrier before and after corrosion was reviewed.It has shown in previous studies that Cr_(2)O_(3)-Er_(2)O_(3)-ZrO_(2) multilayer and aluminum-based coating are utilized as TPBs indicating promising compatibility and tritium resistance property under static liquid lithium-lead environment.The main existing problems and research tendency were also presented in this paper.A large number of comprehensive and systematic studies are needed in related fields to provide data support for the evaluation of the service life of TPBs for future fusion breeder blanket.

关 键 词：阻氚涂层 液态锂铅 腐蚀 聚变堆增殖包层 阻氢渗透 

分 类 号：TL627[核科学技术—核技术及应用]