In Situ Multielement XANES Study of Formation and Reduction of the Oxide Film on Stainless Steel

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DOIResolve DOI: http://doi.org/10.1149/1.2054720
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TypeArticle
Journal titleJournal Of The Electrochemical Society
Volume141
Issue1
PagesL6-L8
Subjectoxygen compounds; passivation; stainless steel; thin films; X-ray absorption spectra; X-ray fluorescence analysis
AbstractThe effectiveness of in situ multielement x-ray absorption near edge spectroscopy for studying the passivation of alloys is demonstrated.By simultaneously windowing the appropriate Kalpha fluorescence lines with a 13-element energy-dispersive germanium detector it ispossible to measure concurrently the behavior of different alloying elements during electrochemical polarization. A thin film of stainless steelwas stepped between –1.5 and +0.4 V (MSE) (the transpassive region of chromium) in a pH 8.4 borate buffer. On the first oxidation, nometal was lost and Fe and Ni showed some oxidation. On reduction, significant Fe and a barely detectable quantity of Ni dissolved. Duringthe second oxidation, some Cr and a smaller fraction of Ni dissolved.
Publication date
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedNo
NPARC number12327120
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Record identifier0087df7e-4ba2-4783-a8d3-213350db5d51
Record created2009-09-10
Record modified2016-05-09
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