Hydrogen Permeation Behavior in Fe_3Al-Based Alloy  

作　　者：Xiaa-hua Tan Xiao-jing Wan 

出　　处：《Advances in Manufacturing》2000年第3期250-253,共4页先进制造进展（英文版）

基　　金：Supported by the National Natural Science Foundation of China!( 5 9895 1 5 7)

摘　　要：Ultra high vacuum gaseous hydrogen permeation experiments on Fe 3Al based alloy were performed in the temperature range of 330～450℃ with an upstream hydrogen pressure between 3.38×10 4 Pa and 7.28×10 4 Pa. The results show that the hydrogen diffusivity and permeability in Fe 3Al 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 Fe 3Al based alloy was found to be 75 kJ/mol.Ultra high vacuum gaseous hydrogen permeation experiments on Fe 3Al based alloy were performed in the temperature range of 330～450℃ with an upstream hydrogen pressure between 3.38×10 4 Pa and 7.28×10 4 Pa. The results show that the hydrogen diffusivity and permeability in Fe 3Al 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 Fe 3Al based alloy was found to be 75 kJ/mol.

关 键 词：Fe  3Al based alloy hydrogen diffusivity hydrogen permeability activation energy 

分 类 号：TG1[金属学及工艺—金属学]