| Numéro |
J. Phys. Colloques
Volume 48, Numéro C6, Novembre 1987
34th International Field Emission Symposium / 34ème Symposium International d'Emission de Champ
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|---|---|---|
| Page(s) | C6-453 - C6-458 | |
| DOI | https://doi.org/10.1051/jphyscol:1987674 | |
34th International Field Emission Symposium / 34ème Symposium International d'Emission de Champ
J. Phys. Colloques 48 (1987) C6-453-C6-458
DOI: 10.1051/jphyscol:1987674
Institute of Metal Research, Academia Sinica, Shenyang, P.R. China
J. Phys. Colloques 48 (1987) C6-453-C6-458
DOI: 10.1051/jphyscol:1987674
A STUDY OF ADSORPTION AND DIFFUSION OF HYDROGEN IN AN AUSTENITIC STAINLESS STEEL BY AP-FIM
D. RenInstitute of Metal Research, Academia Sinica, Shenyang, P.R. China
Abstract
The purpose of the present work is to study hydrogen adsorption and diffusion on the surface of austenitic stainless steel. Hydrogen is noticeably adsorbed on the surface at low temperature (85K) and diffuses into the bulk to a depth of about 40 atom layers. The diffusion activation energy is calculated to be 0.22 eV (or 21.2 KJ/mol). It is also found that the microstructure of a specimen charged with hydrogen is changed. The distribution of hydrogen has a subsurface fluctuation.