The preparation and corrosion behaviors of MAO coating on AZ91D with rare earth conversion precursor film

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	The preparation and corrosion behaviors of MAO coating on AZ91D with rare earth conversion precursor film
	J. S. Cai; F. H. Cao; L. R. Chang; J. J. Zheng; J. Q. Zhang; C. A. Cao
	2011
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	257 期号:8 页码:3804-3811
摘要	A novel kind of micro-arc oxidation (MAO) coating was prepared on magnesium alloy surface coated with rare earth conversion film (RE-film) in an alkaline aluminum oxidation electrolyte by AC power source. Inspection of scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) microspectroscopy, the structure and composition of MAO coating formed on AZ91D with RE-film under different applied voltages were investigated and the performance of the optimized MAO coating compared with the MAO coating directly formed on magnesium alloy. As the pretreatment of magnesium alloy with RE-film, the cerium oxides can be incorporated into the MAO coatings, reduce porosity of the MAO coating surface and enhance the thickness of MAO coating. These structure features and the cerium oxides incorporated into the MAO coating result in greatly improved corrosion resistance. Base on electrochemistry impedance spectroscopy (EIS) measurement, the electronic structure and composition analysis of the MAO coating, a double-layer structure, with a compact inner layer and a porous outer layer, of the coating was proposed for understanding its corrosion process. (C) 2010 Elsevier B.V. All rights reserved.
部门归属	[cai, jingshun; cao, fahe; chang, linrong; zheng, junjun; zhang, jianqing; cao, chunan] zhejiang univ, dept chem, hangzhou 310027, zhejiang, peoples r china. [zhang, jianqing; cao, chunan] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china.;cao, fh (reprint author), zhejiang univ, dept chem, zheda rd 38, hangzhou 310027, zhejiang, peoples r china;nelson_cao@zju.edu.cn
关键词	Magnesium Alloy Rare Earth Conversion Film Micro-arc Oxidation Porosity Az31 Magnesium Alloys Micro-arc Oxidation Mg-al Alloys Electrolyte Resistance Cerium Phosphate
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WOS记录号	WOS:000286179800111
引用统计	被引频次：133[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/321006/30241
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. S. Cai,F. H. Cao,L. R. Chang,et al. The preparation and corrosion behaviors of MAO coating on AZ91D with rare earth conversion precursor film[J]. Applied Surface Science,2011,257(8):3804-3811.
APA	J. S. Cai,F. H. Cao,L. R. Chang,J. J. Zheng,J. Q. Zhang,&C. A. Cao.(2011).The preparation and corrosion behaviors of MAO coating on AZ91D with rare earth conversion precursor film.Applied Surface Science,257(8),3804-3811.
MLA	J. S. Cai,et al."The preparation and corrosion behaviors of MAO coating on AZ91D with rare earth conversion precursor film".Applied Surface Science 257.8(2011):3804-3811.

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