Corrosion behavior of Fe-40Al sheet in N-2-11.2O(2)-7.5CO(2) atmospheres with various SO2 contents at 1273 K

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	Corrosion behavior of Fe-40Al sheet in N-2-11.2O(2)-7.5CO(2) atmospheres with various SO2 contents at 1273 K
	F. Q. Lang; Z. M. Yu; S. Gedevanishvili; S. C. Deevi; S. Hayashi; T. Narita
	2003
发表期刊	Intermetallics
ISSN	0966-9795
卷号	11 期号:2 页码:135-141
摘要	A 200 mum thick Fe-40 at.%Al sheet, produced by powder metallurgy and hot extruding, was corroded at 1273 K for up to 360 ks in N-2-11.2 vol.%O-2-7.4 voI-%CO2 atmospheres containing 100, 500, or 2000 ppmSO(2). The alloy oxidized rapidly at the very initial stage of corrosion, forming sulfides in addition to both theta- and alpha-Al2O3 scales, it was suggested that sutfides may be formed by direct reaction Of SO2 gas molecules with the alloy. Sulfide or dissociated sulfur at the alloy-scale interface may promote exfoliation of the external scale. With further oxidation, the oxide scale consisted solely of alpha-Al2O3, and grows obeying a parabolic rate law. The parabolic rate constants are between 5.5 x 10(-12) and 7.2 x 10(-12) kg(2) m(-4) s(-1), independent Of SO2 concentration. After 360 ks of corrosion the Al content in the alloy sheet remained at about 38 at. %Al, with an almost flat profile across the entire sheet. (C) 2003 Published by Elsevier Science Ltd.
部门归属	hokkaido univ, grad sch engn, res grp interface control engn, kita ku, sapporo, hokkaido 0608628, japan. hokkaido univ, grad sch, sapporo, hokkaido, japan. chinese acad sci, inst met res, state key lab corros & protect, shenyang, peoples r china.;narita, t (reprint author), hokkaido univ, grad sch engn, res grp interface control engn, kita ku, kita 13,nishi 8, sapporo, hokkaido 0608628, japan
关键词	IrOn Aluminides (Based On Feal) Corrosion High-temperature Corrosion B2 Iron Aluminides Oxidation Behavior Feal Alloys Zr
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WOS记录号	WOS:000180424100006
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35875
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. Q. Lang,Z. M. Yu,S. Gedevanishvili,et al. Corrosion behavior of Fe-40Al sheet in N-2-11.2O(2)-7.5CO(2) atmospheres with various SO2 contents at 1273 K[J]. Intermetallics,2003,11(2):135-141.
APA	F. Q. Lang,Z. M. Yu,S. Gedevanishvili,S. C. Deevi,S. Hayashi,&T. Narita.(2003).Corrosion behavior of Fe-40Al sheet in N-2-11.2O(2)-7.5CO(2) atmospheres with various SO2 contents at 1273 K.Intermetallics,11(2),135-141.
MLA	F. Q. Lang,et al."Corrosion behavior of Fe-40Al sheet in N-2-11.2O(2)-7.5CO(2) atmospheres with various SO2 contents at 1273 K".Intermetallics 11.2(2003):135-141.