Paper Title:

Hydrogen Diffusion in Austenitic Stainless Steels

Periodical Defect and Diffusion Forum (Volumes 258 - 260)
Main Theme Diffusion in Solids and Liquids, DSL-2006 I
Edited by Andreas Öchsner and José Grácio
Pages 322-326
DOI 10.4028/
Citation Yun Chen et al., 2006, Defect and Diffusion Forum, 258-260, 322
Online since October, 2006
Authors Yun Chen, Diogo M.F. Santos, César A.C. Sequeira
Keywords Activation Energy, Alloying Element, Austenitic Stainless Steel, Diffusion Coefficient, Electrochemical Permeation Technique, Hydrogen Diffusion
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The electrochemical permeation technique was used to evaluate the hydrogen diffusion, and analyse its interdependent solubility and trapping behaviour in 9 austenitic stainless steels. The hydrogen diffusion of all alloys obeyed Arrhenius relationships in the temperature range between 25 °C to 100 °C. The apparent diffusion coefficients were determined and the relevant activation energies were estimated. It was observed that Ni, Mo, Mn and N, among other alloying elements, clearly effect the hydrogen diffusion.

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