Multi-dimensional investigation on coating growth of micro arc oxidation on AZ91D magnesium alloys

	Multi-dimensional investigation on coating growth of micro arc oxidation on AZ91D magnesium alloys
	Dong, Hai-Rong; Ma, Ying; Guo, Hui-Xia; Zhang, Yu-Fu; Hao, Yuan
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2015-03-01
卷号	25 期号:3 页码:690-696
关键词	Coatings Electrolytes Morphology Oxidation Scanning electron microscopy Silicates Substrates Thickness measurement AZ91D magnesium alloys Cross-section morphology Dimensional changes Electron probe micro analyzer Element distribution Growth rules Microarc oxidation Multi dimensional
ISSN号	10040609
英文摘要	AZ91D magnesium alloys were treated by micro arc oxidation (MAO) in silicate-containing electrolyte. The sample dimension, thickness, morphology and element distribution of the coatings were examined by micrometer with electronic digital display, thickness tester, scanning electron microscope (SEM) and electron-probe micro analyzer (EPMA), respectively. The coating growth was investigated by three methods, containing directly observing the boundary area, macroscopically calculating the coating and directly measuring the whole substrate. The results show a phenomenon that the coatings growing inward and outward is observed intuitively in cross-section morphology of the MAO coating on magnesium alloys through the first method, and it proves the most intuitive evidence to illustrate how the coating grows. By the second method, dimensional changes of the substrates and the coatings can be observed and measured visually and the results also show that the coatings grow inward and outward at the same time, with lager grow rate outward compared with that of inward. The results of the third method once again show the coatings grow inward and outward simultaneously and the dimensions growing outward is lager than that of inward under different times, but the growth rate of the whole coating gradually reduces. ©, 2015, Central South University of Technology. All right reserved.
语种	中文
出版者	Central South University of Technology
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112354]
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Dong, Hai-Rong,Ma, Ying,Guo, Hui-Xia,et al. Multi-dimensional investigation on coating growth of micro arc oxidation on AZ91D magnesium alloys[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2015,25(3):690-696.
APA	Dong, Hai-Rong,Ma, Ying,Guo, Hui-Xia,Zhang, Yu-Fu,&Hao, Yuan.(2015).Multi-dimensional investigation on coating growth of micro arc oxidation on AZ91D magnesium alloys.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,25(3),690-696.
MLA	Dong, Hai-Rong,et al."Multi-dimensional investigation on coating growth of micro arc oxidation on AZ91D magnesium alloys".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 25.3(2015):690-696.