Hydrogen Diffusion in Ti-Cr Hydrogen Absorption Alloys by Tritium Radioluminography
Tritium radioluminography has been applied to Ti50Cr50 and Ti40Cr60 alloys with two-phase structure of BCC phase and Laves phase by examining hydrogen distributions and by measuring a hydrogen penetration profiles. Hydrogen diffusion coefficients in these alloys have been successfully determined by analyzing the tritium depth profile to be 3.3×10-12 m2/s and 1.3× 10-12 m2/s, respectively. This value has been suggested that the hydrogen diffusion in the Laves phase is slower than that in the BCC phase.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
H. Saitoh and H. Homma, "Hydrogen Diffusion in Ti-Cr Hydrogen Absorption Alloys by Tritium Radioluminography", Materials Science Forum, Vols. 475-479, pp. 2513-2516, 2005