碳化硅陶瓷连接技术研究现状  

Research Status of Joining Technology for SiC Ceramic

作　　者：徐晓卫 李宁[2] 刘自豪 石浩江[2] 张幖 李锐 张玉鲜 刘楠 XU Xiaowei;LI Ning;LIU Zihao;SHI Haojiang;ZHANG Biao;LI Rui;ZHANG Yuxian;LIU Nan(Shanghai Xinli Research Institute of Power Equipment,Shanghai 201108,China;Sichuan University,Chengdu 610065,China;Chengdu Keningda Materials Co.,Chengdu 610105,China)

机构地区：[1]上海新力动力设备研究所,上海201108 [2]四川大学,四川成都610065 [3]成都科宁达材料有限公司,四川成都610105

出　　处：《电焊机》2022年第8期10-19,共10页Electric Welding Machine

摘　　要：为预防和应对核电站事故,ATF(Accident Tolerant Fuel)材料的概念应运而生,包覆核燃料芯体的包壳管的材料选用及制造于此具有重要意义。SiC陶瓷凭借其优异的力学性能、耐腐蚀性能及抗辐照性能,成为下一代核燃料包壳管的候选材料。受限于SiC陶瓷的固有特性,SiC基包壳管难以一体成形,为确保端盖处气密性,SiC的连接技术成为国内外学者的研究重点。就SiC陶瓷基本性质、核领域应用前景和制备方法等方面进行了介绍。着重整理了SiC陶瓷的扩散焊连接和钎焊连接等常用连接技术研究现状,分析了Ti、Mo和Ni/Ti等扩散焊连接材料及Ag-Cu基、Pd基、Co基、Ni基、Ti基和Al基等钎料的优劣,论述了不同连接材料在高温、辐照、腐蚀等环境下的性能差异。就SiC陶瓷的连接技术在核包壳管的应用方面进行了评价及展望。In order to prevent and deal with nuclear power plant accidents,the concept of ATF(Accident Tolerant Fuel)material emerged.It is of great significance to select the proper material and manufacturing method of the cladding tube which protects the nuclear fuel core.SiC ceramics has become a candidate material for the next generation of nuclear fuel cladding tubes due to its excellent mechanical properties,corrosion resistance and radiation resistance.Due to the intrinsic property of SiC ceramics,it is difficult to form SiC base cladding.To ensure the gas tightness of the end cap,the joining technology of SiC is the focus of researchers at home and abroad.The basic properties,application prospects in nuclear field and preparation method of SiC ceramics are introduced.The research status of diffusion bonding and brazing bonding of SiC ceramics is emphatically reviewed.The advantages and disadvantages of diffusion bonding materials including Ti,Mo and Ni/Ti and brazing filler materials including Ag-Cu base,Pd base,Co base,Ni base,Ti base and Al base fillers are analyzed.The property differences of joining materials under high temperature,irradiation and corrosion environment are discussed.Finally,the application of SiC ceramics joining technology in cladding is evaluated and prospected.

关 键 词：ATF 包壳材料 SIC陶瓷 钎焊 固相扩散焊 

分 类 号：TG148[一般工业技术—材料科学与工程]