Effects of rare earths on the microarc oxidation of a magnesium alloy

IMR OpenIR

	Effects of rare earths on the microarc oxidation of a magnesium alloy
其他题名	Effects of rare earths on the microarc oxidation of a magnesium alloy
	Li Hanzhong; Tian Yanwen; Cui Zuoxing; Huang Zhenqi
	2008
发表期刊	RARE METALS
ISSN	1001-0521
卷号	27 期号:1 页码:50-54
摘要	The effects of rare earths on the properties of the microarc oxidation (MAO) coating on a magnesium alloy were investigated by means of scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and electrochemistry methods. The results show that a nice and compact MAO coating was successfully obtained when the magnesium alloy was treated in nitrate solutions as the pre-treatment of MAO. However, the MAO was not successfully completed for the silicate electrolytes with the addition of rare earths. After the magnesium alloy being treated by rare earth nitrate, the obtained MAO coating has advantages such as uniform distribution of thickness, improved corrosion resistance, and nice-uniform surface, as compared with the untreated magnesium alloy. In addition, the time of non-ESP, the voltage and current density of the MAO process obviously decrease. Cerium oxide doped on the surface of the magnesium alloy can significantly improve the corrosion resistance of the MAO coating and decrease the current density of the MAO process, as compared with lanthanum oxide, whereas the doped rare earths have no significant effect on the components of the MAO coating.
其他摘要	The effects of rare earths on the properties of the microarc oxidation（MAO） coating on a magnesium alloy were investigated by means of scanning electron microscopy（SEM）,energy dispersive X-ray spectroscopy（EDS）,and electrochemistry methods.The results show that a nice and compact MAO coating was successfully obtained when the magnesium alloy was treated in nitrate solutions as the pre-treatment of MAO.However,the MAO was not successfully completed for the silicate electrolytes with the addition of rare earths.After the magnesium alloy being treated by rare earth nitrate,the obtained MAO coating has advantages such as uniform distribution of thickness,improved corrosion resistance,and nice-uniform surface,as compared with the untreated magnesium alloy.In addition,the time of non-ESP,the voltage and current density of the MAO process obviously decrease.Cerium oxide doped on the surface of the magnesium alloy can significantly improve the corrosion resistance of the MAO coating and decrease the current density of the MAO process,as compared with lanthanum oxide,whereas the doped rare earths have no significant effect on the components of the MAO coating.
关键词	COATINGS microarc oxidation magnesium alloy corrosion resistance salt spray test rare earths
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:3250193
引用统计	被引频次：10[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/146046
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Li Hanzhong,Tian Yanwen,Cui Zuoxing,et al. Effects of rare earths on the microarc oxidation of a magnesium alloy[J]. RARE METALS,2008,27(1):50-54.
APA	Li Hanzhong,Tian Yanwen,Cui Zuoxing,&Huang Zhenqi.(2008).Effects of rare earths on the microarc oxidation of a magnesium alloy.RARE METALS,27(1),50-54.
MLA	Li Hanzhong,et al."Effects of rare earths on the microarc oxidation of a magnesium alloy".RARE METALS 27.1(2008):50-54.