| Issue |
Rev. Met. Paris
Volume 106, Number 4, April 2009
EnvironmentBlast Furnace Steelmaking Galvanizing Steel Use |
|
|---|---|---|
| Page(s) | 175 - 181 | |
| DOI | https://doi.org/10.1051/metal/2009030 | |
| Published online | 10 April 2009 | |
Surface analysis of the selective oxidation during austenitic annealing of CMnSi high strength steel
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.
© La Revue de Métallurgie, 2009
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