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Diffusion Coefficient of Tritium in Ni-Based Alloy

Kan Sakamoto, Masayasu Sugisaki

Fusion Science and Technology / Volume 41 / Number 3P2 / May 2002 / Pages 912-914

Material Interaction and Permeation / Proceedings of the Sixth International Conference on Tritium Science and Technology Tsukuba, Japan November 12-16, 2001

Hydrogen diffusivity and solubility in Inconel 600 were determined with a gas-absorption method using tritiated hydrogen gas in a temperature range from 573 K to 973 K. The temperature dependence of diffusivity D and solubility S were obtained as,D (cm2s−1) = 1.3 x 10−2 exp(−50.6/(RT / kJ)),S (cm3(NTP)cm−3Pa−0.5) = 4.7 x 10−3 exp(−11.7 /(RT / kJ)).

 
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