Chemical study of passivating chromium oxide films by soft X-ray absorption spectroscopy
- 1 January 1994
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 119 (4) , 609-611
- https://doi.org/10.1039/an9941900609
Abstract
Chromium oxide coatings deposited on stainless-steel surfaces were studied by X-ray absorption spectroscopy (XAS) using synchrotron radiation. Migration of manganese from the steel substrate into the film was found to be significant when γ-Cr2O3 was developed by thermal treatment of an originally amorphous coating. The passivating efficiency of the film was then largely improved. The presence of other oxidation states of chromium was not confirmed by XAS.Keywords
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