The Influence of Rare-earth Elements During the Process of Hydrogen Permeation in Pure iron

Wang Minghua; Tian Zhongzhuo; Xiao Jimei; Chang Xiangrong; Lu Rongbang

doi:10.13374/j.issn1001-053x.1985.01.018

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Wang Minghua, Tian Zhongzhuo, Xiao Jimei, Chang Xiangrong, Lu Rongbang. The Influence of Rare-earth Elements During the Process of Hydrogen Permeation in Pure iron[J]. Chinese Journal of Engineering, 1985, 7(1): 47-54. doi: 10.13374/j.issn1001-053x.1985.01.018

Citation:

Wang Minghua, Tian Zhongzhuo, Xiao Jimei, Chang Xiangrong, Lu Rongbang. The Influence of Rare-earth Elements During the Process of Hydrogen Permeation in Pure iron[J]. Chinese Journal of Engineering, 1985, 7(1): 47-54. doi: 10.13374/j.issn1001-053x.1985.01.018

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The Influence of Rare-earth Elements During the Process of Hydrogen Permeation in Pure iron

doi: 10.13374/j.issn1001-053x.1985.01.018

Available Online: 2021-10-29

Abstract

Abstract

The effect of rare earth elements Nd and La on hydrogen permeation in pure iron was studied by means of a Davanathan apparatus Experimental results indicate the diffusion coefficient reduces as the amount of solute Nd or La increases. It's concluded that Nd or La is a reversible Shallow trap of hydrogen pemeation in iron The binding energy of hydrogen around solure Nd is 4.4 kcal/mol and the diffusion activation energy of hydrogen is 6.1 kcal/mol.