Influence of grain size on the corrosion behavior of a Ni-based superalloy nanocrystalline coating in NaCl acidic solution

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	Influence of grain size on the corrosion behavior of a Ni-based superalloy nanocrystalline coating in NaCl acidic solution
	L. Liu; Y. Li; F. H. Wang
	2008
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	53 期号:5 页码:2453-2462
摘要	The effects of grain size on the electrochemical corrosion behavior of a Ni-based superalloy nanocrystalline (NC) coating fabricated by a magnetron sputtering technique, has been investigated in 0.5 M NaCl + 0.05 M H2SO4 Solution. Coatings with grain sizes 10 nm, 50 nm and 100 nm were fabricated on glass and the superalloy substrates. The results indicate that a passive film with porous property, n-type semiconductive property and incorporation of chloride ions formed on the NC coating with 100 nm grain size, which increased the susceptibility to pitting corrosion. The NC coatings with 10 nm and 50 nm grain size formed compact, non-porous and p-type passive films Without chloride ions, which improved resistance to pitting corrosion. The smaller grain size of the material decrease the amount of chloride ions adsorbed on the surface and promoted the formation of compact passive film, which significantly increased the material's resistance to pitting corrosion in acidic solution. (c) 2007 Published by Elsevier Ltd.
部门归属	[liu, li; li, ying; wang, fuhui] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;li, y (reprint author), chinese acad sci, inst met res, state key lab corros & protect, wencui rd 62, shenyang 110016, peoples r china;liying@imr.ac.cn
关键词	Nanocrystalline Coating Ni-based Superalloy Grain Size Point-defect Model Anodic Passive Films Steel 304-stainless-steel Resistance Oxidation Breakdown Adhesion Nickel Alloy
URL	查看原文
WOS记录号	WOS:000252685900050
引用统计	被引频次：116[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/321006/32956
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 grain size on the corrosion behavior of a Ni-based superalloy nanocrystalline coating in NaCl acidic solution[J]. Electrochimica Acta,2008,53(5):2453-2462.
APA	L. Liu,Y. Li,&F. H. Wang.(2008).Influence of grain size on the corrosion behavior of a Ni-based superalloy nanocrystalline coating in NaCl acidic solution.Electrochimica Acta,53(5),2453-2462.
MLA	L. Liu,et al."Influence of grain size on the corrosion behavior of a Ni-based superalloy nanocrystalline coating in NaCl acidic solution".Electrochimica Acta 53.5(2008):2453-2462.