An environmentally friendly molybdate/phosphate black film on Mg-Zn-Y-Zr alloy

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	An environmentally friendly molybdate/phosphate black film on Mg-Zn-Y-Zr alloy
	Y. W. Song; D. Y. Shan; R. S. Chen; E. H. Han
	2010
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	204 期号:20 页码:3182-3187
摘要	An environmentally friendly molybdate/phosphate black film for light absorption application was developed as an alternative to the chromate system on Mg-Zn-Y-Zr alloy. The microstructure, surface morphology, chemical composition, light absorbance and protection property of the black film were investigated. The initiation and growth mechanisms of the black film were also discussed. The black film consists of MoO(2) and a fraction of Mg(3)(PO(4))(2). The MoO(2) contributes to the black color and the Mg(3)(PO(4))(2) aims to improve the protection property. The experimental results indicate that the black film can provide not only high light absorbance but also corrosion protection to the Mg-Zn-Y-Zr substrate. The formation mechanism of the black film is associated with the electrochemical heterogeneity of the Mg-Zn-Y-Zr substrate. At the cathodic sites, MoO(4)(2-) is reduced to MoO(2) accompanying with the hydrogen evolution reaction. At the anodic sites, the dissolution of Mg(2+) bonds with PO(4)(3-) to form Mg(3)(PO(4))(2). (C) 2010 Elsevier B.V. All rights reserved.
部门归属	[song, yingwei; shan, dayong; chen, rongshi; han, en-hou] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china.;song, yw (reprint author), chinese acad sci, state key lab corros & protect, inst met res, 62 wencui rd, shenyang 110016, peoples r china;ywsong@imr.ac.cn
关键词	Molybdate/phosphate Mg-zn-y-zr Black Film Light Absorbance Corrosion Az91d Magnesium Alloy Chemical Conversion Formation Mechanism Coatings Zinc Molybdate Steel Microstructure Deposition Aluminum
URL	查看原文
WOS记录号	WOS:000279455000013
引用统计	被引频次：27[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/321006/31445
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. W. Song,D. Y. Shan,R. S. Chen,et al. An environmentally friendly molybdate/phosphate black film on Mg-Zn-Y-Zr alloy[J]. Surface & Coatings Technology,2010,204(20):3182-3187.
APA	Y. W. Song,D. Y. Shan,R. S. Chen,&E. H. Han.(2010).An environmentally friendly molybdate/phosphate black film on Mg-Zn-Y-Zr alloy.Surface & Coatings Technology,204(20),3182-3187.
MLA	Y. W. Song,et al."An environmentally friendly molybdate/phosphate black film on Mg-Zn-Y-Zr alloy".Surface & Coatings Technology 204.20(2010):3182-3187.