Oxidation of a ternary Cu-Ni-Fe alloy under low oxygen pressures at 800-900 degrees C

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	Oxidation of a ternary Cu-Ni-Fe alloy under low oxygen pressures at 800-900 degrees C
	Y. S. Li; Y. Niu; F. Gesmundo
	2001
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	317 页码:578-582
摘要	The oxidation of a Cu-based ternary alloy containing 30 at% Ni and 25 at% Fe has been studied at 800-900 degreesC under low oxygen pressures. The alloy contains a mixture of a phase a: rich in Cu and Ni with little Fe with a phase beta rich in Fe and Ni with little Cu. The scaling kinetics show rather large deviations from the parabolic law and are milch slower than those of purr Fe and of a binary Cu-25Fe alloy oxidized under the same conditions. The growth of an external layer of iron oxide is coupled to the formation of oxide particles dispersed uniformly within the alloy. The internal oxidation of Fe produces a transformation of the beta phase into the Cu-Ni solid solution which becomes the matrix of the internal oxidation zone. The U phase disappears also beneath the internal oxidation front to some depth, producing a single-phase cu layer. The spatial distribution of the oxide particles in the alloy is rather uniform and does not correspond to that of the two-phases in the original material, which have a largely different iron content. This is the result of a transformation of the beta phase into the alpha phase and of the lateral diffusion of the various components through the alpha layer before the arrival of the internal oxidation front. (C) 2001 Elsevier Science B.V. All rights, reserved.
部门归属	univ genoa, dipartimento ingn chim, i-16129 genoa, italy. acad sinica, inst met res, state key lab corros & protect, shenyang 110015, peoples r china. dalian univ technol, dept mat engn, dalian 116024, peoples r china.;gesmundo, f (reprint author), univ genoa, dipartimento ingn chim, pad d, i-16129 genoa, italy
关键词	Cu-ni-fe Ternary Alloy High Temperature Oxidation 2-phase Binary-alloys High-temperature Oxidation Possible Scaling Modes Low Oxidant Pressures Internal Oxidation
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WOS记录号	WOS:000168157200111
引用统计	被引频次：5[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/321006/36708
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. S. Li,Y. Niu,F. Gesmundo. Oxidation of a ternary Cu-Ni-Fe alloy under low oxygen pressures at 800-900 degrees C[J]. Journal of Alloys and Compounds,2001,317:578-582.
APA	Y. S. Li,Y. Niu,&F. Gesmundo.(2001).Oxidation of a ternary Cu-Ni-Fe alloy under low oxygen pressures at 800-900 degrees C.Journal of Alloys and Compounds,317,578-582.
MLA	Y. S. Li,et al."Oxidation of a ternary Cu-Ni-Fe alloy under low oxygen pressures at 800-900 degrees C".Journal of Alloys and Compounds 317(2001):578-582.