Corrosion of AZ91D magnesium alloy with a chemical conversion coating and electroless nickel layer

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	Corrosion of AZ91D magnesium alloy with a chemical conversion coating and electroless nickel layer
	H. W. Huo; Y. Li; F. H. Wang
	2004
发表期刊	Corrosion Science
ISSN	0010-938X
卷号	46 期号:6 页码:1467-1477
摘要	A chemical conversion treatment and an electroless nickel plating were applied to AZ91D alloy to improve its corrosion resistance. By conversion treatment in alkaline stannate solution, the corrosion resistance of the alloy was improved to some extent as verified by immersion test and potentiodynamic polarization test in 3.5 wt.% NaCl solution at pH 7.0. X-ray diffraction patterns of the stannate treated AZ91D alloy showed the presence of MgSnO3 (.) H2O, and SEM images indicated a porous structure, which provided advantage for the adsorption during sensitisation treatment prior to electroless nickel plating. A nickel coating with high phosphorus content was successfully deposited on the chemical conversion coating pre-applied to AZ91D alloy. The presence of the conversion coating between the nickel coating and the substrate reduced the potential difference between them and enhanced the corrosion resistance of the alloy. An obvious passivation occurred for the nickel coating during anodic polarization in 3.5 wt.% NaCl solution. (C) 2003 Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china.;huo, hw (reprint author), chinese acad sci, met res inst, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china;hwhuo@imr.ac.cn
关键词	Az91d Magnesium Alloy Chemical Conversion Electroless Nickel Plating
URL	查看原文
WOS记录号	WOS:000221569300008
引用统计	被引频次：284[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/321006/35383
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. W. Huo,Y. Li,F. H. Wang. Corrosion of AZ91D magnesium alloy with a chemical conversion coating and electroless nickel layer[J]. Corrosion Science,2004,46(6):1467-1477.
APA	H. W. Huo,Y. Li,&F. H. Wang.(2004).Corrosion of AZ91D magnesium alloy with a chemical conversion coating and electroless nickel layer.Corrosion Science,46(6),1467-1477.
MLA	H. W. Huo,et al."Corrosion of AZ91D magnesium alloy with a chemical conversion coating and electroless nickel layer".Corrosion Science 46.6(2004):1467-1477.