Tritium Diffusion Behavior in Neutron-Irradiated LiAl Crystal

H. Sugai; Z. Miao; M. Kato; H. Kudo

doi:dx.doi.org/10.13182/FST92-A29849

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Home / Publications / Journals / Fusion Science and Technology / Volume 21 / Number 2P2

Tritium Diffusion Behavior in Neutron-Irradiated LiAl Crystal

H. Sugai, Z. Miao, M. Kato, H. Kudo

Fusion Science and Technology / Volume 21 / Number 2P2 / March 1992 / Pages 818-820

Material; Storage and Processing / dx.doi.org/10.13182/FST92-A29849

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The activation energy of tritium diffusion in intermetallic ⁶LiAl crystals (103.8±9.5 kJ/mol) determined in the temperature range from 699 to 886 K was fairly large compared with that of hydrogen diffusion in Al (40–60 kJ/mol) in which hydrogen would diffuse in an interstitial-diffusion mechanism. The tritium diffusion in ⁶LiAl crystals was explained by a vacancy-diffusion mechanism, roles of vacancies and anti-structure atoms being considered.