Effects of cerium and manganese on corrosion of Fe-Cr and Fe-Cr-Ni alloys in Ar-20CO2 gas at 818°C

被引：68

作者：

Thuan Dinh Nguyen ^{[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 | 2013年 / 76卷

基金：

澳大利亚研究理事会;

关键词：

Alloy; Cerium; Manganese; High temperature corrosion; DIFFUSION-COEFFICIENT; INTERNAL OXIDATION; CARBURIZATION; CARBON; OXYGEN; OXIDE; IRON; AL; SI;

D O I：

10.1016/j.corsci.2013.06.046

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 Ce (0.05%, 0.1%) or Mn (1%, 2%) were exposed to Ar-200O(2) gas at 818 degrees C. Scales on Fe-9Cr alloys consisted of FeO and FeCr2O4, Fe-20Cr-(Ce) alloys formed only Cr2O3, and Fe-20Cr-(Mn) alloys formed Cr2O3 and MnCr2O4. All Fe-20Cr-20Ni alloys formed Fe3O4, FeCr2O4 and FeNi3. Cerium additions had little effects, but additions of 2% Mn significantly improved oxidation resistance of Fe-20Cr and Fe-20Cr-20Ni alloys. Most alloys also carburized. All alloys developed protective chromium-rich oxide scales in air. Different behavior in the two gases is attributed to faster Cr2O3 scaling rates induced by CO2. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：231 / 242

页数：12

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