Preparation and hot corrosion behaviour of an Al-gradient NiCoCrAlYSiB coating on a Ni-base superalloy

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	Preparation and hot corrosion behaviour of an Al-gradient NiCoCrAlYSiB coating on a Ni-base superalloy
	Z. B. Bao; Q. M. Wang; W. Z. Li; X. Liu; J. Gong; T. Y. Xiong; C. Sun
	2009
发表期刊	Corrosion Science
ISSN	0010-938X
卷号	51 期号:4 页码:860-867
摘要	A gradient NiCoCrAlYSiB coating was prepared on a Ni-base superalloy using arc ion plating (AIP) and subsequent gaseous phase aluminisation techniques. Hot corrosion of normal NiCoCrAlYSiB and the gradient coating in pure Na(2)SO(4) and Na(2)SO(4)/NaCl (75:25, wt./wt.) salts was performed at 900 degrees C in static air. The corrosion results indicated an enhanced corrosion resistance to both salts for the gradient NiCoCrAlYSiB coating, which the improved performance of it should be attributed to the beta aluminide "pool" at the surface layer. By partially sacrificing Al(2)O(3) (i.e. Al), the gradient NiCoCrAlYSiB coating specimen behaved excellently in the two kinds of salts. The grain growth during the gaseous phase aluminisation and the corrosion mechanism, including the role NaCl played in the mixture salt corrosion, are discussed. (C) 2009 Elsevier Ltd. All rights reserved.
部门归属	[bao, z. b.; wang, q. m.; li, w. z.; liu, x.; gong, j.; xiong, t. y.; sun, c.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;sun, c (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 72 wenhua rd, shenyang 110016, peoples r china;csun@imr.ac.cn
关键词	Metal Coatings Gaseous Phase Aluminisation Hot Corrosion Grain Growth Gas-turbine Components Oxidation Chloride Alloy
URL	查看原文
WOS记录号	WOS:000265472500021
引用统计	被引频次：105[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/321006/31814
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. B. Bao,Q. M. Wang,W. Z. Li,et al. Preparation and hot corrosion behaviour of an Al-gradient NiCoCrAlYSiB coating on a Ni-base superalloy[J]. Corrosion Science,2009,51(4):860-867.
APA	Z. B. Bao.,Q. M. Wang.,W. Z. Li.,X. Liu.,J. Gong.,...&C. Sun.(2009).Preparation and hot corrosion behaviour of an Al-gradient NiCoCrAlYSiB coating on a Ni-base superalloy.Corrosion Science,51(4),860-867.
MLA	Z. B. Bao,et al."Preparation and hot corrosion behaviour of an Al-gradient NiCoCrAlYSiB coating on a Ni-base superalloy".Corrosion Science 51.4(2009):860-867.