Corrosion behavior of Mg-10Gd-2Y-0.4Zr alloy under thin electrolyte layers

IMR OpenIR

	Corrosion behavior of Mg-10Gd-2Y-0.4Zr alloy under thin electrolyte layers
	C. Chen; T. Zhang; G. Meng; Y. Shao; F. Wang; X. Li; C. Dong
	2010
发表期刊	Materials and Corrosion-Werkstoffe Und Korrosion
ISSN	0947-5117
卷号	61 期号:5 页码:388-397
摘要	The corrosion behavior of Mg-10Gd-2Y-0.4Zr (GW102K) alloy under thin electrolyte layer (TEL) with various thicknesses was investigated by means of cathodic polarization curve, electrochemical impedance spectroscopy (EIS), and electrochemical noise (EN). Based on shot noise theory and stochastic theory, the EN results were quantitatively analyzed by using the Weibull and Gumbel distribution function, respectively. The experimental results showed that the anodic and cathodic processes of the corrosion of GW102K alloy were both retained under thin electrolyte layers. Whether under TEL or not, the cathodic process was dominated by hydrogen evolution reaction. The corrosion was more localized under thin electrolyte layer than that in bulk solution. The results also demonstrated that there were two kinds of effects for thin electrolyte layer on the corrosion behavior of GW102K alloy: (i) the rate of pit initiation was evidently retarded compared to that in bulk solution; (ii) the probability of pit growth decreased, which should be the real reason why the corrosion rate of GW102K alloy decreased with the decrease in layer thickness.
部门归属	[chen, c.; zhang, t.; meng, g.; shao, y.; wang, f.] harbin engn univ, minist educ, key lab superlight mat & surface technol, corros & protect lab, harbin 150001, peoples r china. [zhang, t.; meng, g.; shao, y.; wang, f.; li, x.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. [li, x.; dong, c.] univ sci & technol beijing, ctr corros & protect, beijing 100083, peoples r china.;zhang, t (reprint author), harbin engn univ, minist educ, key lab superlight mat & surface technol, corros & protect lab, nantong st 145, harbin 150001, peoples r china;zhangtao@hrbeu.edu.cn
关键词	Electrochemical Noise-analysis Wet-dry Conditions Atmospheric Corrosion Pitting Corrosion Pure Aluminum Ac-impedance In-situ Localized Corrosion Neutral Chloride Magnesium Alloys
URL	查看原文
WOS记录号	WOS:000278341800002
引用统计	被引频次：5[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/321006/31019
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. Chen,T. Zhang,G. Meng,et al. Corrosion behavior of Mg-10Gd-2Y-0.4Zr alloy under thin electrolyte layers[J]. Materials and Corrosion-Werkstoffe Und Korrosion,2010,61(5):388-397.
APA	C. Chen.,T. Zhang.,G. Meng.,Y. Shao.,F. Wang.,...&C. Dong.(2010).Corrosion behavior of Mg-10Gd-2Y-0.4Zr alloy under thin electrolyte layers.Materials and Corrosion-Werkstoffe Und Korrosion,61(5),388-397.
MLA	C. Chen,et al."Corrosion behavior of Mg-10Gd-2Y-0.4Zr alloy under thin electrolyte layers".Materials and Corrosion-Werkstoffe Und Korrosion 61.5(2010):388-397.