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Characterization of Oxide Scales Formed on Ferritic Stainless Steel 441 at 1,100 °C under water vapor

Abstract : This study focuses on the characterization of the oxide scales formed after different exposure times in the range of 2.5-20 min. A commercially available ferritic steel grade AISI 441 was exposed to wet argon at 1100 °C with 5, 9 and 13% H2O. Raman microspectroscopy, XRD, EDS and XPS were used to fully characterize the oxide scale. For all samples exposed for over 4 min, the scale was constituted of three layers in this order: a thin top layer of spinel phases (Fe,Cr,Mn)3O4 with local outgrowths; a second and main layer of Cr2O3 + (Mn,Cr)3O4; and finally a bottom layer of SiO2. The uncommon presence of Fe in the top layer was also observed.
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Article dans une revue
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01060494
Contributeur : Magalie Prudon <>
Soumis le : mercredi 3 septembre 2014 - 16:53:30
Dernière modification le : samedi 19 septembre 2020 - 04:30:06

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Valentin Badin, Entela Diamanti, Pierre Foret, Evelyne Darque-Ceretti. Characterization of Oxide Scales Formed on Ferritic Stainless Steel 441 at 1,100 °C under water vapor. Oxidation of Metals, Springer Verlag, 2014, 82 (5-6), pp.347-357. ⟨10.1007/s11085-014-9495-2⟩. ⟨hal-01060494⟩

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