Oxidation of two ternary Fe-Cu-5 at.% al alloys in 1 atm of pure O-2 at 800 degrees C

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	Oxidation of two ternary Fe-Cu-5 at.% al alloys in 1 atm of pure O-2 at 800 degrees C
	J. H. Xiang; Y. Niu; F. Gesmundo
	2004
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	61 期号:5-6 页码:403-421
摘要	The oxidation of two two-phase ternary Fe - Cu - Al alloys containing about 5 at.% aluminium, one Fe-rich and one Cu-rich, has been studied at 800degreesC under 1 atm O-2. The Fe- rich alloy (Fe - 15Cu - 5Al) shows two parabolic stages, with a large decrease of the parabolic rate constant after about 2 hr. The presence of 5 at.% Al reduces significantly the oxidation rate of this alloy with respect to a binary Fe- Cu alloy of similar composition by forming an external alumina scale. Moreover, the addition of 15 at.% Cu is able to reduce the critical aluminium content needed to form alumina scales with respect to binary Fe - Al alloys. On the contrary, the Cu-rich Fe - 85Cu-5Al alloy presents a single parabolic stage and forms a thick and porous external scale composed of an outermost layer of copper oxides and an inner region containing a mixture of copper and Fe - Al oxides, coupled to the internal oxidation of iron and aluminium. As a result, the oxidation of the Cu-rich ternary alloy at 800degreesC is much faster than that of the Fe- rich ternary alloy.
部门归属	chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china. univ genoa, dichep, i-16129 genoa, italy.;niu, y (reprint author), chinese acad sci, state key lab corros & protect, inst met res, wencui rd 62, shenyang 110016, peoples r china;yniu@icpm.syb.ac.cn
关键词	Ternary Alloys Iron-copper Base Oxidation Aluminium Effect Low Oxidant Pressures Cu-cr Alloys Forming Insoluble Oxides 2-phase Binary-alloys Internal Oxidation External Oxidation Air Oxidation Approximate Analysis H-2-h2s Mixtures Ag Alloys
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WOS记录号	WOS:000222171800004
引用统计	被引频次：7[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/321006/35648
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. H. Xiang,Y. Niu,F. Gesmundo. Oxidation of two ternary Fe-Cu-5 at.% al alloys in 1 atm of pure O-2 at 800 degrees C[J]. Oxidation of Metals,2004,61(5-6):403-421.
APA	J. H. Xiang,Y. Niu,&F. Gesmundo.(2004).Oxidation of two ternary Fe-Cu-5 at.% al alloys in 1 atm of pure O-2 at 800 degrees C.Oxidation of Metals,61(5-6),403-421.
MLA	J. H. Xiang,et al."Oxidation of two ternary Fe-Cu-5 at.% al alloys in 1 atm of pure O-2 at 800 degrees C".Oxidation of Metals 61.5-6(2004):403-421.