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Authors
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Rokosz, K. ; Simon, F. ; Hryniewicz, T. ; Rzadkiewicz, S.
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Title
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Comparative XPS analysis of passive layers composition formed on AISI 304 L SS after standard and high-rurrent density electropolishing
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Date
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01.01.2015
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Number
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45263
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Abstract
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In the paper, there are described chemical compositions of passive surface layers formed on AISI 304·L (EN 1.4307) stainless steel after standard (EP50; i·=·50 A/dm2) and high-current density (EP1000; i·=·1000·A/dm2) electropolishing. For the studies, a mixture of orthophosphoric and sulfuric acid electrolyte in proportion 1:4 was used. The survey and high-resolution spectra of Cr 2p, Fe 2p, S 2p, P 2p, Ni 2p and C 1s are presented. On the basis of the obtained results it was noted that the chromium-to-iron ratio (Cr/Fe) after EP50 was about 3.5 times higher than that after EP1000 treatment. The phosphorus-to-sulfur ratios after EP50 and EP1000 electropolishing were 0.13 and 0.3, respectively, and nickel to the sum of chromium and iron coefficient (Ni/Cr·+·Fe) for both electrochemical polishing was equal to 0.04. Copyright © 2014 John Wiley & Sons, Ltd.
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Publisher
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Surface and Interface Analysis
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Wikidata
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Citation
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Surface and Interface Analysis 47 (2015) 87-92
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DOI
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https://doi.org/10.1002/sia.5676
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Tags
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xps spectroscopy aisi 304·l ss ep1000 electropolishing
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