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The mechanism of thermal oxide film formation on low Cr martensitic stainless steel and its behavior in fluoride-based pickling solution in conversion treatment

Journal Contribution - Journal Article

In this research, first a multi-analytical approach was carried out to propose a mechanistic model for the formation of the thermal oxide film on low Cr stainless steel. It describes the effects of kinetically and thermodynamically driven phenomena on the growth of a Fe-Cr complex oxide film at 950℃. Second, the behavior of the thermal oxide film in the presence of fluoride ions, as a relevant pickling agent in conversion treatment, was investigated. It was shown that fluoride ions enter the oxide film and form a complex with Fe and preferentially dissolve hematite islands through a complexation mechanism.

Journal: Corrosion
ISSN: 0010-938X
Volume: 181
Pages: 109-206
Publication year:2021
BOF-keylabel:yes
IOF-keylabel:yes
BOF-publication weight:2
Authors:International
Authors from:Higher Education
Accessibility:Open