Effects of the Power Supply Mode and Loading Parameters on the Characteristics of Micro-Arc Oxidation Coatings on Magnesium Alloy

doi:10.3390/met10111452

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	Effects of the Power Supply Mode and Loading Parameters on the Characteristics of Micro-Arc Oxidation Coatings on Magnesium Alloy
	Yao, Jian-tao 2; Wang, Sheng 1; Zhou, Yong 2; Dong, Hui 2
刊名	METALS
	2020-11-01
卷号	10 期号:11
关键词	micro-arc oxidation load characteristics power mode average energy consumption load parameters
DOI	10.3390/met10111452
英文摘要	Micro-arc Oxidation (MAO) is a technology for non-ferrous metal surface treatment through growth ceramic coating in situ. To determine the influence of the power supply mode and the loading parameters on the film forming of magnesium alloy micro-arc oxidation processing, the different power supply modes of pulsed direct current DC, pulsed bipolar current (BC) and the pulsed with a discharge loop current (DLC) was used with MAO technology on the AZ91D magnesium alloy. The power load parameters were optimized. The average energy consumption was calculated. Results showed that the role of the negative voltage in the bipolar pulse power supply is to restrain the large arc tendency. Under the pulse power supply with a discharge loop, the current and energy consumption decreases with the increase of the discharge resistance at the same pulse parameters. The big arc phenomenon can be effectively avoided and the impact of load capacitance could be effectively avoided by using the pulse power supply with a discharge loop. Moreover, the processing of the micro-arc oxidation is stable, the arc point is uniform, the surface of the film is smooth, the hole is uniform and the coating is dense, and the film efficiency is improved effectively.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	MDPI
WOS记录号	WOS:000593363800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155064]
专题	兰州理工大学
作者单位	1.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China 2.Xian Shiyou Univ, Sch Mat Sci & Engn, Xian 710065, Peoples R China;
推荐引用方式 GB/T 7714	Yao, Jian-tao,Wang, Sheng,Zhou, Yong,et al. Effects of the Power Supply Mode and Loading Parameters on the Characteristics of Micro-Arc Oxidation Coatings on Magnesium Alloy[J]. METALS,2020,10(11).
APA	Yao, Jian-tao,Wang, Sheng,Zhou, Yong,&Dong, Hui.(2020).Effects of the Power Supply Mode and Loading Parameters on the Characteristics of Micro-Arc Oxidation Coatings on Magnesium Alloy.METALS,10(11).
MLA	Yao, Jian-tao,et al."Effects of the Power Supply Mode and Loading Parameters on the Characteristics of Micro-Arc Oxidation Coatings on Magnesium Alloy".METALS 10.11(2020).