Effects of nitrogen on the passivity of Fe-20Cr alloy
Influences of nitrogen on the passivity of Fe-20Cr-(0, 1.1)N alloys were examined by in situ electrochemical techniques. Nitrogen was incorporated in the form of (Fe, Cr)-nitrides in the passive film, and Cr was enriched in the film of the alloy with nitrogen. Photocurrent analysis demonstrated that the structure of passive film formed on Fe-20Cr-1.1N alloy is Cr-substituted gamma-Fe(2)O(3) with (Fe, Cr)-nitrides. Mott-Schottky analysis revealed that the film formed on Fe-20Cr-1.1N contained higher Cr(6+) and lower Cr(3+) vacancy concentrations compared with that on Fe-20Cr alloy. All of these results were associated with the enhanced protectiveness of the film on Fe-20Cr-1.1N. (c) 2008 Elsevier Ltd. All rights reserved.
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Issue Date
- 2009-01
- Language
- English
- Article Type
- Article
- Keywords
8.5 BUFFER SOLUTION; STAINLESS-STEELS; PHOTOELECTROCHEMICAL ANALYSIS; PITTING CORROSION; PASSIVATION; FILMS
- Citation
CORROSION SCIENCE, v.51, pp.48 - 53
- ISSN
- 0010-938X
- Appears in Collection
- MS-Journal Papers(저널논문)
- Files in This Item
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