Evaluation of the micro-arc oxidation treatment effect on the protective performance of a Mg-rich epoxy coating on AZ91D magnesium alloy

被引：49
作者：
Lu, Xiangyu [1 ]
Feng, Xingguo [2 ]
Zuo, Yu [3 ]
Zheng, Chuanbo [1 ]
Lu, Sheng [1 ]
Xu, Lei [1 ]
机构：
[1] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China
[2] Hohai Univ, Coll Harbour Coastal & Offshore Engn, Nanjing 210098, Jiangsu, Peoples R China
[3] Beijing Univ Chem Technol, Sch Mat Sci & Engn, Beijing 100029, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2015年 / 270卷
基金：
中国国家自然科学基金;
关键词：
Magnesium; Alloy; Micro-arc oxidation; Mg-rich primer; EIS; PLASMA ELECTROLYTIC OXIDATION; CORROSION PROTECTION; CATHODIC PROTECTION; AL-ALLOYS; BEHAVIOR; PRIMER; ALUMINUM; SURFACE; NACL; SVET;
D O I：
10.1016/j.surfcoat.2015.02.052
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A micro-arc oxidation (MAO) film is prepared on AZ91D magnesium alloy, and the effects of the MAO treatment on the performance of a Mg-rich primer on AZ91D alloy are studied. After MAO treatment an oxidized film with high porosity forms on the magnesium substrate. As a result, the adhesion of a Mg-rich primer to the AZ91D substrate increases. The MAO treatment significantly improves the performance of a Mg-rich primer on the AZ91D alloy, owing to the corrosion resistance of the MAO film. The coating system with MAO pre-treatment shows good barrier effects after 2400 h of salt spray testing and could serve to protect the AZ91D alloy below. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：227 / 235
页数：9
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