Inhibition of initial surface oxidation by strongly bound hydroxyl species and Cr segregation: H2O and O2 adsorption on Fe–17Cr
The initial stages of surface oxidation of Fe–17Cr (ferritic stainless steel) were investigated
at 323K by X-ray photoelectron spectroscopy (XPS) and inelastic electron background
analysis. The results indicated the formation of a mixed iron–chromium oxide layer upon O2
exposure and the formation of a thin chromium oxyhydroxide layer upon H2O exposure. The
oxidation of Fe did not occur in the latter case. Moreover, it was found that pre-exposing the
Fe–17Cr surface to H2O significantly hinders subsequent oxidation by O2, thus providing a …
at 323K by X-ray photoelectron spectroscopy (XPS) and inelastic electron background
analysis. The results indicated the formation of a mixed iron–chromium oxide layer upon O2
exposure and the formation of a thin chromium oxyhydroxide layer upon H2O exposure. The
oxidation of Fe did not occur in the latter case. Moreover, it was found that pre-exposing the
Fe–17Cr surface to H2O significantly hinders subsequent oxidation by O2, thus providing a …
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