Corrosion behavior of an alumina forming austenitic steel exposed to supercritical carbon dioxide

被引：91

作者：

He, Ling-Feng ^{[1
]}

Roman, Paul ^{[1
]}

Leng, Bin ^{[1
]}

Sridharan, Kumar ^{[1
]}

Anderson, Mark ^{[1
]}

Allen, Todd R. ^{[1
]}

机构：

[1] Univ Wisconsin Madison, Dept Engn Phys, Madison, WI 53706 USA

来源：

CORROSION SCIENCE | 2014年 / 82卷

关键词：

Stainless steels; SEM; STEM; High temperature corrosion; Oxidation; Carburization; STAINLESS-STEELS; DEGREES-C; OXIDATION; ALLOYS; MECHANISM; KINETICS; NIOBIUM;

D O I：

10.1016/j.corsci.2013.12.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructure characterization of corrosion behavior of an alumina forming austenitic (AFA) steel exposed to supercritical carbon dioxide was conducted at 450-650 degrees C and 20 MPa. At low temperature and short exposure times, the oxidation kinetics were parabolic and the oxide scales were mainly composed of protective and continuous Al2O3 and (Cr, Mn)-rich oxide layers. As the temperature and exposure time increased, the AFA steel gradually suffered breakaway oxidation and its oxide scales showed a multilayer structure mainly composed of Fe3O4, (Cr, Fe)(3)O-4, NiFe/FeCr2O4/Cr2O3/Al2O3, FeCr2O4/Al2O3, and NiFe/Cr2O3/Al2O3, in sequence. The corrosion mechanism based on the microstructure evolution is discussed in detail. Published by Elsevier Ltd.

引用

页码：67 / 76

页数：10

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