Electrochemical Corrosion Behavior of Nanocrystalline Materials-a Review

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	Electrochemical Corrosion Behavior of Nanocrystalline Materials-a Review
	L. Liu; Y. Li; F. H. Wang
	2010
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	26 期号:1 页码:40922
摘要	Nanocrystallization significantly influences the electrochemical corrosion behaviors of metals/alloys in liquid system. In active dissolution, nanocrystallization accelerates the corrosion reactions. If the corrosion products are dissoluble, the corrosion rate is increased by nanocrystallization; if the corrosion products are insoluble, the corrosion rate is decreased on the contrary because the corrosion products act as a block layer to delay the dissolution. In passivation, nanocrystallization changes the composition of the passive film, and results into different morphology and growth process of the passive film, both of which improves the formation of compact film and influences the semiconductor property. It influences the passivation depending on fast element diffusion and special adsorbed ability. The small grain size improves the element diffusion, which leads to the different composition of passive film (passive elements enrichment such as Cr, Ti). The small grain size also changes the surface condition, which influences the ions adsorption. All increase the corrosion resistance of materials. In local corrosion, nanocrystallization increases the unstable points on the surface of the materials, which increases the possibility of local corrosion. However, the excellent ability of element diffusion helps heal the local corrosion points, which inhibits the growth of the local corrosion.
部门归属	[liu, li; li, ying; wang, fuhui] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china.;li, y (reprint author), chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china;liying@imr.ac.cn
关键词	Nanocrystalline Materials Electrochemical Corrosion Review Ni-based Superalloy Dilute Hcl Solution Stainless-steel Acidic-solutions Microcrystalline Aluminum Mild-steel Ingot Iron Pure Iron Inhibition Stability
URL	查看原文
WOS记录号	WOS:000274489800001
引用统计	被引频次：249[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/321006/31300
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. Electrochemical Corrosion Behavior of Nanocrystalline Materials-a Review[J]. Journal of Materials Science & Technology,2010,26(1):40922.
APA	L. Liu,Y. Li,&F. H. Wang.(2010).Electrochemical Corrosion Behavior of Nanocrystalline Materials-a Review.Journal of Materials Science & Technology,26(1),40922.
MLA	L. Liu,et al."Electrochemical Corrosion Behavior of Nanocrystalline Materials-a Review".Journal of Materials Science & Technology 26.1(2010):40922.