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Vol.17, No.1, 33 ~ 38, 1979
Title
Hydrogen Diffusion in Ti alloys at the Room Temperature
김대룡 , 이재영 , 박용기 Dai Ryong Kim , Jai Young Lee , Yong Ki Park
Abstract
Diffusivities of hydrogen in Ti-Al, Ti-Cr and Ti-Ni alloys at room temperature were calculated from published data on hydrogen absorption rate. Apparent diffusivities calculated were much higher than the values which were extrapolated to room temperature from high temperature diffusion data for pure α and α solid solution. Hydrogen diffusivity shows maximum at 67.5% Cr in Ti-Cr system and at 30% Ni in Ti-Ni system. These phenomena may be explained by the presences of γ phase (Ti Cr₂) in Tr-Cr alloy and δ phase (Ti Ni) in Ti-Ni alloy system. These phases have higher hydrogen diffusivity than other phases.
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