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Surface analysis of the selective oxidation during austeniticannealing of CMnSi high strength steel
Published online by Cambridge University Press: 10 April 2009
Abstract
The selective oxidation of three CMnSi steels with different C levels was studied by XPS. The formation of a gradually covering SiO2 film is observed until a transition temperature above which the oxide film disappears, resulting in a renewed appearance of metallic iron at the surface. This change in oxidation behavior is thought to be due to the SiO2 reduction by solute C which is thermodynamically favorable at high temperature. At the same time the precipitation of a BN film on the metallic surface was observed which prevented any further oxidation.
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- Research Article
- Information
- Metallurgical Research & Technology , Volume 106 , Issue 4: EnvironmentBlast FurnaceSteelmakingGalvanizingSteel Use , April 2009 , pp. 175 - 181
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- © La Revue de Métallurgie, 2009
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