Forming process of black micro-arc oxidation coatings on aluminium alloys

	Forming process of black micro-arc oxidation coatings on aluminium alloys
	Lu, Cheng 1,2; Wang, Qing 1; Liang, Jun 2; Li, Qing-Biao 2; Peng, Zhen-Jun 2; Liu, Bai-Xing 2
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2015-12-01
卷号	25 期号:12 页码:3430-3438
关键词	Adhesion Alumina Aluminum alloys Aluminum coatings Aluminum oxide Bond strength (materials) Ceramic coatings Ceramic materials Deterioration Electrolytes Optical properties Oxidation Scanning electron microscopy Silicates Absorptance Al-alloy Energy dispersive spectrometry High lights Micro-arc oxidation coatings Microarc oxidation Surface layers Thin layers
ISSN号	10040609
英文摘要	The black ceramic coatings were prepared on Al alloys by micro-arc oxidation (MAO) in silicate electrolyte containing NH4VO3. The optical property and adhesion strength of the coatings were studied by spectrophotometer and thermal shock test. The forming process of the coatings was investigated by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS). The results show that the black ceramic coatings have high light absorptance, but poor adhesion strength, the surface layer is easy to peel off. The forming process of black PEO coatings can be divided into two phases. At first, the oxidation of substrate plays a predominant role, forming a thin layer of alumina which appears gray and adheres well to the substrate. And then, the compound deposition in the electrolyte play a leading role. The color of coating is further deepen, and the delamination is occurred with the previous coating, which leading to deterioration of adhesion. © 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/113293]
专题	能源与动力工程学院
作者单位	1.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China
推荐引用方式 GB/T 7714	Lu, Cheng,Wang, Qing,Liang, Jun,et al. Forming process of black micro-arc oxidation coatings on aluminium alloys[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2015,25(12):3430-3438.
APA	Lu, Cheng,Wang, Qing,Liang, Jun,Li, Qing-Biao,Peng, Zhen-Jun,&Liu, Bai-Xing.(2015).Forming process of black micro-arc oxidation coatings on aluminium alloys.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,25(12),3430-3438.
MLA	Lu, Cheng,et al."Forming process of black micro-arc oxidation coatings on aluminium alloys".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 25.12(2015):3430-3438.