Hydrogen permeation behavior in Fe3Al-based alloy |
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| Authors: | Xiaa-hua Tan Xiao-jing Wan |
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| Institution: | (1) School of Material Science and Engineering, Shanghai University, 200072 Shanghai, China |
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| Abstract: | Ultra-high vacuum gaseous hydrogen permeation experiments on Fe3Al-based alloy were performed in the temperature range of 330∼450°C with an upstream hydrogen pressure between 3. 38×104 Pa and 7.28×104 Pa. The results show that the hydrogen diffusivity and permeability in Fe3Al-based alloy obey Arrhenius relationship in the experimental temperature range and the hydrogen permeation process is controlled
by the lattice diffusion of hydrogen at relative high temperature. The activation energy of hydrogen diffusion in the Fe3Al-based alloy was found to be 75 kJ/mol.
Supported by the National Natural Science Foundation of China (59895157) |
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| Keywords: | Fe3Al-based alloy hydrogen diffusivity hydrogen permeability activation energy |
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