Influence of micro-structure on corrosion behavior of a Ni-based superalloy in 3.5% NaCl

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	Influence of micro-structure on corrosion behavior of a Ni-based superalloy in 3.5% NaCl
	L. Liu; Y. Li; F. H. Wang
	2007
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	52 期号:25 页码:7193-7202
摘要	The electrochemical corrosion behavior of a Ni-based superalloy with polycrystalline (cast alloy), single-crystalline (SC (2 0 0)) and nanocrystalline (NC) micro-structures has been studied in 3.5% NaCl solution. The results indicated that among the three materials, the corrosion resistance increased in the order cast alloy < SC (2 0 0) alloy < NC coating. XPS analyses revealed that the composition of passive film on the three materials was different. In addition to Cr2O3 and TiO2, some NiO was detected in the passive film on the cast alloy, little in that of the SC (2 0 0) alloy and none in that of the NC coating. The double-log plots showed the compact property of the passive film formed on the samples also varied in the order cast alloy < SC (2 0 0) alloy < NC coating, with the cast alloy displaying the worst compact property and the NC coating the best. The micro-structure influenced both the composition of passive film as well as the initial growth of passive film, which determined the compact property of the film and resulted in the observed differences in the corrosion behavior of the three materials. (C) 2007 Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, inst metal res, state key lab corros & protect, shenyang 110016, peoples r china.;li, y (reprint author), chinese acad sci, inst metal res, state key lab corros & protect, wencui rd 62, shenyang 110016, peoples r china;liying@imr.ac.cn
关键词	Ni-based Superalloy Nanocrystalline Coating Single-crystal Alloy Electrochemical Behavior Stress Rupture Behavior Single-crystal Passive Films Oxidation Behavior Stainless-steel Oxide-films Nickel Alloy Air 900-degrees-c
URL	查看原文
WOS记录号	WOS:000249426300002
引用统计	被引频次：100[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/321006/33712
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Liu,Y. Li,F. H. Wang. Influence of micro-structure on corrosion behavior of a Ni-based superalloy in 3.5% NaCl[J]. Electrochimica Acta,2007,52(25):7193-7202.
APA	L. Liu,Y. Li,&F. H. Wang.(2007).Influence of micro-structure on corrosion behavior of a Ni-based superalloy in 3.5% NaCl.Electrochimica Acta,52(25),7193-7202.
MLA	L. Liu,et al."Influence of micro-structure on corrosion behavior of a Ni-based superalloy in 3.5% NaCl".Electrochimica Acta 52.25(2007):7193-7202.