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A STUDY OF ADSORPTION AND DIFFUSION OF HYDROGEN IN THE AUSTBNITIC STAINLESS STEEL BY AP-FIM |
| REN Dagang |
| Institute of Metal Research, Academia Sinica, Shenyang |
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| Cite this article: |
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REN Dagang 1988 Chin. Phys. Lett. 5 125-128 |
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Abstract Hydrogen adsorption and diffusion on the surface of austenitic stainless steel are studied with atom probe field ion microscope (AP-FIM). 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 0.22eV ( or 21.2KJ/mol). It is also found that the microstructure of a specimen charged with hydrogen is changed, and the distribution of hydrogen fluctuates with the depth.
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Published: 01 March 1988
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