High-Temperature Oxidation Resistance of Austenitic Stainless Steels

Dong Sheng Li; Dan Li; Hong Dou; Pei Gao; Yu Liu; Xiao Jun Chen; Xin Chun Jiang; Jing Juan Pei

doi:10.4028/www.scientific.net/KEM.575-576.414

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 575-576High-Temperature Oxidation Resistance of...

High-Temperature Oxidation Resistance of Austenitic Stainless Steels

Abstract:

The oxidation kinetic curves of four kinds of austenitic stainless steel at 700°C was measured by weighting method. It is showed that the oxidation curves of those austenitic stainless steels follow the parabolic law. The mass gain of 800Al steel. is the least of all. The surfacemorphology and structure of the oxide scale were studied by scanning electron microscopy and X-ray diffraction methods. It is found that adense oxide scale formed at 700°C in all four austenitic stainless steels. In austenitic stainless steel with high Mn content, scales are mainly composed of Mn₂O₃ and the spinel MnFe₂O₄. Scales of austenitic stainless steel with high Cr content but without element Al are composed by Cr₂O₃ and the small amount of spinel FeCr₂O₄ . Scales of austenitic stainless steel with element Al and Cr are composed of (Fe0.6Cr0.4)2O3 and Al oxide, showing the excellent oxidation resistance property.

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Periodical:

Key Engineering Materials (Volumes 575-576)

Pages:

414-417

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.575-576.414

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Online since:

September 2013

Authors:

Dong Sheng Li, Dan Li, Hong Dou, Pei Gao, Yu Liu, Xiao Jun Chen, Xin Chun Jiang, Jing Juan Pei

Keywords:

Austenitic Stainless Steel, High Temperature Oxidation, Oxide Scale

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