Corrosion behavior of an alumina forming austenitic steel exposed to supercritical carbon dioxide
Corrosion behavior of an alumina forming austenitic steel exposed to supercritical carbon dioxide
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DOI：
10.1016/j.corsci.2013.12.023
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发表时间：
2014-05-01
影响因子：
8.3
通讯作者：
Allen, Todd R.
中科院分区：
文献类型：
--
作者：
He, Ling-Feng;Roman, Paul;Allen, Todd R.
在450 ~ 650℃、20 MPa条件下，对氧化铝成形奥氏体（AFA）钢在超临界二氧化碳环境下的腐蚀行为进行了显微组织表征。在低温和短暴露时间下，氧化动力学呈抛物线型，氧化层主要由保护性连续Al2O3和富（Cr, Mn）氧化层组成。随着温度和暴露时间的增加，AFA钢逐渐发生分离氧化，其氧化层依次呈现以Fe3O4、（Cr, Fe）(3)O-4、NiFe/FeCr2O4/Cr2O3/Al2O3、FeCr2O4/Al2O3、NiFe/Cr2O3/Al2O3为主的多层结构。详细讨论了基于微观组织演变的腐蚀机理。Elsevier Ltd.出版。
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.