XPS and AES studies of carbon steel polarized in aqueous molybdate solutions

Fu-Ming Pan*, Y. ‐L Lin, J. ‐C Oung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

X‐ray photoemission spectroscopy (XPS) and Auger electron spectroscopy (AES) have been used to study the passive film on carbon steel produced electrochemically in aerated and deaerated molybdate aqueous solutions. Very few molybdate ions were adsorbed on the oxide surface of the carbon steel in aerated solution according to XPS measurements. On the contrary, significant amounts of Mo(+4), Mo(+5) and Mo(+6) ions were detected on the anodically polarized steel in deaerated solution. In addition to molybdate ions and iron oxides, MoO(OH)2 and Mo2O5 were suggested to be present in the opaque passive film.

Original languageEnglish
Pages (from-to)409-413
Number of pages5
JournalSurface and Interface Analysis
Volume19
Issue number1-12
DOIs
StatePublished - 1 Jan 1992

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