In situ multielement XANES study of formation and reduction of the oxide film on stainless steel
- Brookhaven National Lab., Upton, NY (United States)
- Exxon Research and Engineering Co., Annandale, NY (United States)
- National Research Council, Ottawa (Canada)
The effectiveness of in situ multielement X-ray absorption near edge spectroscopy for studying the passivation of alloys is demonstrated. By simultaneously windowing the appropriate K{sub a} fluorescence lines with a 13-element energy-dispersive germanium detector it is possible to measure concurrently the behavior of different alloying elements during electrochemical polarization. A thin film of stainless steel was stepped between {minus}1.5 and +0.4 V (MSE) (the transpassive region of chromium) in a pH 8.4 borate buffer. On the first oxidation, no metal was lost and Fe and Ni showed some oxidation. On reduction, significant Fe and a barely detectable quantity of Ni dissolved. During the second oxidation, some Cr and a smaller fraction of Ni dissolved.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 142199
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 1 Vol. 141; ISSN 0013-4651; ISSN JESOAN
- Country of Publication:
- United States
- Language:
- English
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