Corrosion of pure magnesium under thin electrolyte layers

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	Corrosion of pure magnesium under thin electrolyte layers
	T. Zhang; C. M. Chen; Y. W. Shao; G. Z. Meng; F. H. Wang; X. G. Li; C. F. Dong
	2008
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	53 期号:27 页码:7921-7931
摘要	The corrosion behavior of pure magnesium was investigated by means of cathodic polarization curve, electrochemical impedance spectroscopy (EIS) and electrochemical noise (EN) under aerated and deaerated thin electrolyte layers (TEL) with various thicknesses. Based on shot noise theory and stochastic theory, the EN results were quantitatively analyzed by using the Weibull and Gumbel distribution function, respectively. The results show that the cathodic process of pure magnesium under thin electrolyte layer was dominated by hydrogen reduction. With the decreasing of thin electrolyte layer thickness, cathodic process was retarded slightly while the anodic process was inhibited significantly, which indicated that both the cathodic and anodic process were inhibited in the presence of oxygen. The absence of oxygen decreased the corrosion resistance of pure magnesium in case of thin electrolyte layer. The corrosion was more localized under thin electrolyte layer than that in bulk solution. The results also demonstrate that there exist two kinds of effects for thin electrolyte layer on the corrosion behavior of pure magnesium: (I) the rate of pit initiation was evidently retarded compared to that in bulk solution; (2) the probability of pit growth oppositely increased. The corrosion model of pure magnesium under thin electrolyte layer was suggested in the paper. (c) 2008 Elsevier Ltd. All rights reserved.
部门归属	[zhang, tao; chen, chongmu; shao, yawei; meng, guozhe; wang, fuhui] harbin engn univ, key lab superlight mat & surface technol, corros & protect lab, minist educ, harbin 150001, peoples r china. [zhang, tao; shao, yawei; meng, guozhe; wang, fuhui; li, xiaogang] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. [li, xiaogang; dong, chaofang] univ sci & technol beijing, ctr corros & protect, beijing 100083, peoples r china.;zhang, t (reprint author), harbin engn univ, key lab superlight mat & surface technol, corros & protect lab, minist educ, nantong st 145, harbin 150001, peoples r china;zhangtao@hrbeu.edu.cn
关键词	Pure Magnesium Thin Electrolyte Layer Corrosion Electrochemical Noise Stochastic Analysis Wet-dry Conditions Electrochemical Noise-analysis Atmospheric Corrosion Ac-impedance In-situ Localized Corrosion Pitting Corrosion Organic Coatings Aluminum-alloys Oxide-films
URL	查看原文
WOS记录号	WOS:000259470800018
引用统计	被引频次：95[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/321006/33336
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	T. Zhang,C. M. Chen,Y. W. Shao,et al. Corrosion of pure magnesium under thin electrolyte layers[J]. Electrochimica Acta,2008,53(27):7921-7931.
APA	T. Zhang.,C. M. Chen.,Y. W. Shao.,G. Z. Meng.,F. H. Wang.,...&C. F. Dong.(2008).Corrosion of pure magnesium under thin electrolyte layers.Electrochimica Acta,53(27),7921-7931.
MLA	T. Zhang,et al."Corrosion of pure magnesium under thin electrolyte layers".Electrochimica Acta 53.27(2008):7921-7931.