| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7896021 | Corrosion Science | 2014 | 10 Pages |
Abstract
Microstructure characterization of corrosion behavior of an alumina forming austenitic (AFA) steel exposed to supercritical carbon dioxide was conducted at 450-650 °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)3O4, NiFe/FeCr2O4/Cr2O3/Al2O3, FeCr2O4/Al2O3, and NiFe/Cr2O3/Al2O3, in sequence. The corrosion mechanism based on the microstructure evolution is discussed in detail.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Ling-Feng He, Paul Roman, Bin Leng, Kumar Sridharan, Mark Anderson, Todd R. Allen,