CHEMICAL STUDY OF PASSIVATING CHROMIUM-OXIDE FILMS BY SOFT-X-RAY ABSORPTION-SPECTROSCOPY

Citation
Mo. Figueiredo et al., CHEMICAL STUDY OF PASSIVATING CHROMIUM-OXIDE FILMS BY SOFT-X-RAY ABSORPTION-SPECTROSCOPY, Analyst, 119(4), 1994, pp. 609-611
Citations number
7
Categorie Soggetti
Chemistry Analytical
Journal title
ISSN journal
00032654
Volume
119
Issue
4
Year of publication
1994
Pages
609 - 611
Database
ISI
SICI code
0003-2654(1994)119:4<609:CSOPCF>2.0.ZU;2-X
Abstract
Chromium oxide coatings deposited on stainless-steel surfaces were stu died by X-ray absorption spectroscopy (XAS) using synchrotron radiatio n. Migration of manganese from the steel substrate into the film was f ound to be significant when gamma-Cr2O3 was developed by thermal treat ment of an originally amorphous coating. The passivating efficiency of the film was then largely improved. The presence of other oxidation s tates of chromium was not confirmed by XAS.