Effects of oxidation time on microstructures and properties of micro-arc oxidation coatings of AZ91D magnesium alloy

	Effects of oxidation time on microstructures and properties of micro-arc oxidation coatings of AZ91D magnesium alloy
	Lü, Wei-Ling 1; Ma, Ying1 ; Chen, Ti-Jun1 ; Xu, Wei-Jun 1,2; Yang, Jian 1; Hao, Yuan 1
	2009-08-01
发表期刊	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
ISSN	10040609
卷号	19 期号:8 页码:1385-1391
摘要	Micro-arc oxidation (MAO) coatings were formed on AZ91D alloy surface by invariable small current density process in silicate electrolyte. The microstructures were studied by digital coating thickness gauge, SEM, surface roughness measuring instrument and coating adhesion scratch test machine, and the corrosion and wear resistance were assessed by electrochemistry workstation and ball-block reciprocating friction tester. The results indicate that with the increase of the oxidation time, the anode voltages are stabilized, the thickness and roughness are always increased. The porosity and bonding force of the MAO coating first increase, and then decrease, they are all reach their maximum values at 60 min. The melting particles of surface are bigger and the number of large holes is increased, and the distribution becomes uneven. The coating has good corrosion resistance and the best wear resistance when the oxidation time is 40 min.
关键词	Corrosion resistance Electrolytes Magnesium alloys Microstructure Oxidation Silicates Surface roughness Thickness measurement Wear of materials Wear resistance AZ91D magnesium alloys Corrosion and wear resistance Magnesium alloy AZ91D Measuring instruments Micro-arc oxidation coatings Microarc oxidation Microstructures and properties Reciprocating friction
收录类别	EI
语种	中文
出版者	Central South University of Technology
EI入藏号	20093912342762
EI主题词	Corrosion resistant coatings
EI分类号	539.1 Metals Corrosion - 542.2 Magnesium and Alloys - 702 Electric Batteries and Fuel Cells - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931.2 Physical Properties of Gases, Liquids and Solids - 943.2 Mechanical Variables Measurements - 951 Materials Science
来源库	Compendex
分类代码	539.1 Metals Corrosion - 542.2 Magnesium and Alloys - 702 Electric Batteries and Fuel Cells - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931.2 Physical Properties of Gases, Liquids and Solids - 943.2 Mechanical Variables Measurements - 951 Materials Science
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/112064
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2.College of Chemical and Industry, Gansu Lianhe University, Lanzhou 730000, China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Lü, Wei-Ling,Ma, Ying,Chen, Ti-Jun,et al. Effects of oxidation time on microstructures and properties of micro-arc oxidation coatings of AZ91D magnesium alloy[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2009,19(8):1385-1391.
APA	Lü, Wei-Ling,Ma, Ying,Chen, Ti-Jun,Xu, Wei-Jun,Yang, Jian,&Hao, Yuan.(2009).Effects of oxidation time on microstructures and properties of micro-arc oxidation coatings of AZ91D magnesium alloy.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,19(8),1385-1391.
MLA	Lü, Wei-Ling,et al."Effects of oxidation time on microstructures and properties of micro-arc oxidation coatings of AZ91D magnesium alloy".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 19.8(2009):1385-1391.