摘要
对于未来聚变和裂变能源装置，第一壁/包层的结构材料处于严酷的使用环境．其中嬗变产物氢氦对结构材料的作用是所关心的重要问题之一．TisSiC2是一种新型的高性能综合性陶瓷材料——金属陶瓷材料。具有十分优异的耐高温抗辐照特性．本文通过。He（d，p）4He核反应方法获得了400至1100℃He在Ti3SiC2中的扩散系数以及氦在材料中的深度分布，并对氦的扩散行为进行了讨论．发现氦在材料中的演化和内应力的共同作用导致了氦分布的变化．
In fusion and fission energy devices, the first wall/cladding structure materials are in a harsh environment. The effect of hydrogen and helium produced by transmutation on the structural materials is one of the critical problems for future nuclear reactors. ＂133SIC2 is a high performance ceramic material that combines the advantages of ceramics and metals, and it has excellent resistance to irradiation damage. In this work, the helium diffusion constants and concentration profiles in Ti3SiC2 from 400 to 1100 ℃ were obtained using the resonant 3He （d, p） ＇He nuclear reaction, and the helium diffusion behavior is also discussed. The concentration profiles were found to change because of the interaction between helium evolution and stress in the material.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2015年第B05期54-58,共5页
Acta Physico-Chimica Sinica
