Microstructure and Properties of MAO Coatings for AZ91D Magnesium Alloy in Varies Work Mode

摘要：

　　Micro arc oxidation coatings were prepared on AZ91D magnesium alloy in order to evaluate the role of electrical parameters under different work mode.Taking HV hardness and pit corrosion time as investigation index,the optimum process parameters were obtained through orthogonal experiment method.The morphology of coating was observed by scanning electron microscopy (SEM).The results showed that the coatings with dense and few micro pores can be obtained under constant current and power mode,and this kind coatings are of good corrosion resistance and have HV micro-hardness compared with those under constant voltage mode.

关键词： Magnesium alloy Micro arc oxidation Work mode Electrical parameters

作者: Xuejun Cui Xiuzhou Lin Chunhai Liu Ruisong Yang Mingtian Li

作者单位: Material Corrosion and Protection Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Zigong 643000, China;College of Materials and Chemical Engineering, Sichuan University of Science and Engineering,Zigong 643000, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 178-183

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）