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Title

Chemical analysis of passive films on type AISI 304 stainless steel using soft X-ray absorption spectroscopy

AuthorsBastidas Rull, José María; López, María Francisca ; Gutiérrez, A.; Torres, C. L.
KeywordsStainless steel
Polarization
Pitting corrosion
Soft x-ray absorption spectroscopy (XAS)
Issue DateFeb-1998
PublisherElsevier
CitationCorrosion Science 40(2-3): 431-438 (1998)
AbstractX-ray absorption spectroscopy has beem employed to investigate the differences between passive films on type AISI 304 stainless steel produced by anodic polarization at two scan rates and four potential values. Cr LIII,II spectra show that in all cases a Cr2O3 film is formed at the surface. Fe and Ni signals have a mainly metallic lineshape with a possible small contribution from hydroxides, which is maximum for the polarization sample at the slowest scan rate and the maximum potential. Also for this sample a decrease in the Mn signal indicates Mn dissolution. | X-ray absorption spectroscopy has been employed to investigate the differences between passive films on type AISI 304 stainless steel produced by anodic polarization at two scan rates and four potential values. Cr LIII,II spectra show that in all cases a Cr2O3 film is formed at the surface. Fe and Ni signals have a mainly metallic lineshape with a possible small contribution from hydroxides, which is maximum for the polarized sample at the slowest scan rate and the maximum potential. Also for this sample a decrease in the Mn signal indicates Mn dissolution.
Publisher version (URL)http://doi.org/10.1016/S0010-938X(97)00149-2
URIhttp://hdl.handle.net/10261/84941
DOI10.1016/S0010-938X(97)00149-2
Identifiersissn: 0010-938X
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