Preparation and characterization of composite coating on Mg-1.74Zn-0.55Ca alloy by micro-arc oxidation combined with sol-gel method

被引：26
作者：
Dou, Jinhe [1 ,2 ,3 ]
Yu, Huijun [4 ,5 ]
Chen, Chuanzhong [1 ,2 ,3 ]
机构：
[1] Shandong Univ, Shenzhen Res Inst, Shenzhen 518057, Guangdong, Peoples R China
[2] Shandong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Shandong, Peoples R China
[3] Shandong Univ, Sch Mat Sci & Engn, Shandong Engn Res Ctr Superhard Mat, Jinan 250061, Shandong, Peoples R China
[4] Shandong Univ, Sch Mech Engn, Minist Educ, Key Lab High Efficiency & Clean Mech Manufacture, Jinan 250061, Shandong, Peoples R China
[5] Shandong Univ, Sch Mech Engn, Natl Demonstrat Ctr Expt Mech Engn Educ, Jinan 250061, Shandong, Peoples R China
来源：
MATERIALS LETTERS | 2019年 / 255卷
关键词：
Corrosion; Alloy surfaces; Magnesium alloy; Micro-arc oxidation; Sol-gel; BIODEGRADABLE MAGNESIUM ALLOYS; CORROSION BEHAVIOR;
D O I：
10.1016/j.matlet.2019.126578
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To improve the corrosion resistance, composite coatings on Mg-1.74Zn-0.55Ca alloy were successfully obtained by the combination of MAO and sol-gel method. The dipping times of the sol-gel process had significant effects on the surface morphologies. The in vitro degradation performance of the composite coatings was investigated via immersion test and electrochemical test. It is shown the composite coatings could act as a barrier to improve the corrosion resistance of MAO coating by reducing the corrosion current. (C) 2019 Published by Elsevier B.V.
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页数：4
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