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Effects of rare earths on the microarc oxidation of a magnesium alloy
Alternative TitleEffects of rare earths on the microarc oxidation of a magnesium alloy
Li Hanzhong; Tian Yanwen; Cui Zuoxing; Huang Zhenqi
2008
Source PublicationRARE METALS
ISSN1001-0521
Volume27Issue:1Pages:50-54
AbstractThe 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.
Other AbstractThe 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.
KeywordCOATINGS microarc oxidation magnesium alloy corrosion resistance salt spray test rare earths
Indexed ByCSCD
Language英语
CSCD IDCSCD:3250193
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/146046
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
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.
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