Electrochemical Assembly of Ni-xCr-yAl Nanocomposites with Excellent High-Temperature Oxidation Resistance

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	Electrochemical Assembly of Ni-xCr-yAl Nanocomposites with Excellent High-Temperature Oxidation Resistance; Electrochemical Assembly of Ni-xCr-yAl Nanocomposites with Excellent High-Temperature Oxidation Resistance
	X. Yang; X. Peng; C. Xu; F. Wang
	2009 ; 2009
发表期刊	Journal of the Electrochemical Society ; Journal of the Electrochemical Society
ISSN	0013-4651 ; 0013-4651
卷号	156 期号:5 页码:C167-C175
摘要	Various amounts of Cr and Al nanoparticles were electrochemically assembled into a nanocrystalline Ni matrix template to form Ni-xCr-yAl nanocomposites (x, y in weight percent). By characterization of the steady-state oxide scales formed at 900 degrees C in air, an oxide map correlating the scale types with the composition ranges of the nanocomposites was established, showing that these nanocomposites can transform from NiO formers to chromia or alumina formers, by increasing the amount of (Cr + Al) to a critical, particle-size-dependent value and by changing the value of the ratio Cr/Al. The nanocomposites, in comparison to ternary composites assembled using Cr and Al microparticles instead of the nanoparticles and with conventionally coarse-grained alloys of similar composition, exhibited a greatly increased ability of thermally developing chromia or alumina scales. A model for the establishment of various oxide scales on the nanocomposites is proposed, correlating the nature of the scales with their specific microstructures and with the values of (Cr + Al) and Cr/Al. (C) 2009 The Electrochemical Society. [DOI: 10.1149/1.3082378] All rights reserved.; Various amounts of Cr and Al nanoparticles were electrochemically assembled into a nanocrystalline Ni matrix template to form Ni-xCr-yAl nanocomposites (x, y in weight percent). By characterization of the steady-state oxide scales formed at 900 degrees C in air, an oxide map correlating the scale types with the composition ranges of the nanocomposites was established, showing that these nanocomposites can transform from NiO formers to chromia or alumina formers, by increasing the amount of (Cr + Al) to a critical, particle-size-dependent value and by changing the value of the ratio Cr/Al. The nanocomposites, in comparison to ternary composites assembled using Cr and Al microparticles instead of the nanoparticles and with conventionally coarse-grained alloys of similar composition, exhibited a greatly increased ability of thermally developing chromia or alumina scales. A model for the establishment of various oxide scales on the nanocomposites is proposed, correlating the nature of the scales with their specific microstructures and with the values of (Cr + Al) and Cr/Al. (C) 2009 The Electrochemical Society. [DOI: 10.1149/1.3082378] All rights reserved.
部门归属	[yang, x.; peng, x.; xu, c.; wang, f.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;yang, x (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;xpeng@imr.ac.cn ; [yang, x.; peng, x.; xu, c.; wang, f.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;yang, x (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;xpeng@imr.ac.cn
关键词	Cr-al Alloys Cr-al Alloys Composite Coatings Composite Coatings Reactive Elements Reactive Elements Hot Corrosion Hot Corrosion Behavior Behavior Scales Scales Electrodeposition Electrodeposition Deposition Deposition Particles Particles Additions Additions
URL	查看原文 ; 查看原文
WOS记录号	WOS:000264780400026 ; WOS:000264780400026
引用统计	被引频次：60[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/321006/32493
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Yang,X. Peng,C. Xu,et al. Electrochemical Assembly of Ni-xCr-yAl Nanocomposites with Excellent High-Temperature Oxidation Resistance, Electrochemical Assembly of Ni-xCr-yAl Nanocomposites with Excellent High-Temperature Oxidation Resistance[J]. Journal of the Electrochemical Society, Journal of the Electrochemical Society,2009, 2009,156, 156(5):C167-C175, C167-C175.
APA	X. Yang,X. Peng,C. Xu,&F. Wang.(2009).Electrochemical Assembly of Ni-xCr-yAl Nanocomposites with Excellent High-Temperature Oxidation Resistance.Journal of the Electrochemical Society,156(5),C167-C175.
MLA	X. Yang,et al."Electrochemical Assembly of Ni-xCr-yAl Nanocomposites with Excellent High-Temperature Oxidation Resistance".Journal of the Electrochemical Society 156.5(2009):C167-C175.