Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (Suppl): 54-58.doi: 10.3866/PKU.WHXB2014Ac15

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Investigation of Helium Diffusion Behavior in Ti3SiC2 by 3He (d, p) 4He Nuclear Reaction

QI Qiang1,4, HUANG Mengbing2, ZHANG Hai-Bin3, SHI Li-Qun1   

  1. 1 Applied Ion Beam Physics Laboratory, Institute of Modern Physics, Fudan University, Shanghai 200433, P. R. China;
    2 Ion Beam Laboratory, State University of New York (SUNY) at Albany & SUNY College of Nanoscale Science and Engineering, Albany 12203, New York, U. S. A.;
    3 Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang 610003, Sichuan Province, P. R. China;
    4 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
  • Published:2015-05-20
  • Contact: SHI Li-Qun


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. Ti3SiC2 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) 4He 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.

Key words: Ti3SiC2 MAX phase, Helium diffusion behavior, 3He (d, p) 4He nuclear reaction, Helium bubble, Irradiation damage


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