Effects of cerium and manganese on corrosion of Fe-Cr and Fe-Cr-Ni alloys in Ar-20CO2 and Ar-20CO2-20H2O gases at 650 °C

被引：48
|
作者：
Nguyen, Thuan Dinh [1 ]
Zhang, Jianqiang [1 ]
Young, David J. [1 ]
机构：
[1] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia
来源：
CORROSION SCIENCE | 2015年 / 100卷
基金：
澳大利亚研究理事会;
关键词：
Rare earth elements; Stainless steel; Carburisation; High temperature corrosion; DIFFUSION-COEFFICIENT; INTERNAL OXIDATION; HYDROGEN ATTACK; CHROMIA SCALES; CARBURIZATION; STEELS; IRON; RELEVANT; BEHAVIOR; KINETICS;
D O I：
10.1016/j.corsci.2015.08.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Model alloys Fe-9Cr, Fe-20Cr and Fe-20Cr-20Ni (wt.%) with 0.1% Ce or 2% Mn were exposed to Ar-20CO(2) and Ar-20CO(2)-20H(2)O gas mixtures at 650 degrees C. Ferritic alloys underwent breakaway oxidation in both gases. Manganese additions significantly improved the oxidation resistance of Fe-20Cr in dry but not wet CO2. Water vapour accelerated internal oxidation of Fe-(9, 20)Cr. Austenitic alloys were more protective during corrosion in wet CO2. Cerium/manganese improved Fe-20Cr-20Ni performance in dry but not wet CO2. Most alloys carburised beneath their scales in both gases. Breakaway resistance is discussed in terms of Wagner's criteria for selective chromia scaling. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：448 / 465
页数：18
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