Oxide Films Formed on FeCrAl Steel Foil Coated with Pt and Al Films

Abstract:

The investigations were aimed to characterize the oxide films (Al₂O₃) in terms of the crystal structure development and their impact on increase in mechanical distribution of Pt in volume of the film, as a system predisposed to carry out catalytic processes. The morphology and phase composition of oxide films formed on the surface of FeCrAl steel foil coated with Al and Pt films and Al/Pt composition films after oxidation at high temperature were investigated. All samples with films were oxidized in an atmosphere containing 67% O₂/Ar at 850 ° C in a period of 24 h. As a result of the oxidation processes there were formed θ-Al₂O₃ oxides of whisker structure of a considerable size, while whiskers of θ-Al₂O₃ oxides formed on the samples coated with Pt films were smaller but with higher density. There was also α-Al₂O₃ phase in the form of solids in the immediate vicinity of the steel substrate.

• Periodical: Advances in Science and Technology (Volume 91)
• Pages: 140-145
• DOI: https://doi.org/10.4028/www.scientific.net/AST.91.140
• Online since: October 2014
• Authors: Kazimierz Reszka*, Zbigniew Zurek, M. Szczypinski, Artur Jaron
• Keywords: Alumina, Coating, FeCrAl Steel, Magnetron, Oxidation, SEM, Sputtering, TEM

References

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[2] K. Reszka, J. Morgiel, Z. Zurek, A. Jaron, Characterization of aluminia scale formed on FeCrAl steel, Archiv. of Metall. and Mater. Vol. 59 2014, DOI: 10. 2478-2014-0013.

DOI: 10.2478/amm-2014-0013

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