Oxidation behavior of three-phase Cu-25Ni-30Cr alloy at 700-800 degrees C under high oxygen pressures

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	Oxidation behavior of three-phase Cu-25Ni-30Cr alloy at 700-800 degrees C under high oxygen pressures
	Z. Q. Cao; W. H. Liu; G. P. Zhai; Y. Niu
	2005
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	15 期号:3 页码:491-496
摘要	The thermogravimetric analysis of a ternary Cu-25Ni-30Cr alloy prepared by conventional casting was performed in 0.1 MPa pure O-2 at 700 - 800 degrees C. The results show that the alloy is composed of three phases, where the phase with the largest copper and lowest chromium content forms the matrix, while the other two, much richer in chromium, form a dispersion of isolated particles. At variance with another three-phase Cu-20Ni-20Cr alloy, which forms complex scales containing the oxides of the various components and double oxides plus an irregular region composed of alloy and oxides, the present alloy can form a very irregular but continuous chromia layer at the base of the mixed internal region, producing a gradual decrease of the oxidation rate down to very low values. A larger chromium content needed to form chromia layer for a ternary three-phase alloy is attributed to the limitations to the diffusion of the alloy components in the metal substrate imposed by their multiphase nature.
部门归属	shenyang normal univ, dept chem, shenyang 110034, peoples r china. chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;cao, zq (reprint author), shenyang normal univ, dept chem, shenyang 110034, peoples r china;caozhongqiu6508@sina.com
关键词	Cu-ni-cr Alloy Three-phase High-temperature Oxidation 2-phase Binary-alloys High-temperature Oxidation Possible Scaling Modes Low Oxidant Pressures Cu-cr Alloys Air Oxidation Internal Oxidation 700-900-degrees-c Beneath Scales
URL	查看原文
WOS记录号	WOS:000230449600003
引用统计	被引频次：3[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/321006/34799
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Cao,W. H. Liu,G. P. Zhai,et al. Oxidation behavior of three-phase Cu-25Ni-30Cr alloy at 700-800 degrees C under high oxygen pressures[J]. Transactions of Nonferrous Metals Society of China,2005,15(3):491-496.
APA	Z. Q. Cao,W. H. Liu,G. P. Zhai,&Y. Niu.(2005).Oxidation behavior of three-phase Cu-25Ni-30Cr alloy at 700-800 degrees C under high oxygen pressures.Transactions of Nonferrous Metals Society of China,15(3),491-496.
MLA	Z. Q. Cao,et al."Oxidation behavior of three-phase Cu-25Ni-30Cr alloy at 700-800 degrees C under high oxygen pressures".Transactions of Nonferrous Metals Society of China 15.3(2005):491-496.