Oxidation of the three-phase alloy Cu-20Ni-20Cr AT 973-1073 K in 101 kPa O-2

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	Oxidation of the three-phase alloy Cu-20Ni-20Cr AT 973-1073 K in 101 kPa O-2
	Z. Q. Cao; Y. Niu; G. Farne; F. Gesmundo
	2001
发表期刊	High Temperature Materials and Processes
ISSN	0334-6455
卷号	20 期号:5-6 页码:377-383
摘要	The oxidation of a ternary Cu-Ni-Cr alloy containing approximately 20 wt% Ni and 20 wt% Cr (Cu-20Ni-20Cr) and composed of a mixture of three phases has been studied in 101 kPa (1 atm) O-2 at 973-1073 K. The alloy matrix was composed of the phase with the largest copper and lowest chromium content, while the other two phases, much richer in chromium, formed a dispersion of isolated particles. By high temperature oxidation this alloy formed complex external scales containing mixtures of the oxides of the various components and double oxides plus an irregular inner region composed of a mixture of alloy and oxides, which did not correspond to the classical structure of the zones of internal oxidation, while the alloy/scale interface was very irregular. This behavior differs from that of another two ternary Cu-Ni-Cr alloys with similar chromium content but richer in nickel and containing only one or two phases, which formed protective continuous chromia scales after rather short initial oxidation periods. The lack of formation of continuous chromia layers for Cu-20Ni-20Cr is attributed to the limitations of the diffusion of the alloy components in the metal substrate imposed by its multiphase nature.
部门归属	inst met sci & technol, state key lab corros & protect, shenyang 110016, peoples r china. shenyang normal univ, coll chem & life sci, shenyang 110034, peoples r china. univ genoa, dipartimento ingn chim, i-16129 genoa, italy.;niu, y (reprint author), inst met sci & technol, state key lab corros & protect, wencui rd 62, shenyang 110016, peoples r china
关键词	Cu-ni-cr Multiphase Alloy High Temperatures Oxidation 2-phase Binary-alloys High-temperature Oxidation Most-reactive Component Possible Scaling Modes High Oxidant Pressures Fe-cu Alloys Air Oxidation Internal Oxidation Stable Oxide Cr Alloys
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WOS记录号	WOS:000174149000008
引用统计	被引频次：19[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/321006/36601
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Cao,Y. Niu,G. Farne,et al. Oxidation of the three-phase alloy Cu-20Ni-20Cr AT 973-1073 K in 101 kPa O-2[J]. High Temperature Materials and Processes,2001,20(5-6):377-383.
APA	Z. Q. Cao,Y. Niu,G. Farne,&F. Gesmundo.(2001).Oxidation of the three-phase alloy Cu-20Ni-20Cr AT 973-1073 K in 101 kPa O-2.High Temperature Materials and Processes,20(5-6),377-383.
MLA	Z. Q. Cao,et al."Oxidation of the three-phase alloy Cu-20Ni-20Cr AT 973-1073 K in 101 kPa O-2".High Temperature Materials and Processes 20.5-6(2001):377-383.