Mg-9Gd-3Y-0.6Zn-0.5Zr镁合金微弧氧化配方的优化

王萍; 李建平; 马群

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Mg-9Gd-3Y-0.6Zn-0.5Zr镁合金微弧氧化配方的优化
Optimization of Electrolyte Formula of Micro-arc Oxidation for Mg-9Gd-3Y-0.6Zn-0.5Zr Magnesium Alloy in Aluminate Solution
2008年第7期页码：502-504
纸质出版日期： 2008 ，
DOI：

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[1]王萍,李建平,马群.Mg-9Gd-3Y-0.6Zn-0.5Zr镁合金微弧氧化配方的优化[J].特种铸造及有色合金,2008(07):502-504+487-488.

Wang Ping, Li Jianping, Ma Qun. Optimization of Electrolyte Formula of Micro-arc Oxidation for Mg-9Gd-3Y-0.6Zn-0.5Zr Magnesium Alloy in Aluminate Solution[J]. Special Casting & Nonferrous Alloys, 2008,(7):502-504.
[1]王萍,李建平,马群.Mg-9Gd-3Y-0.6Zn-0.5Zr镁合金微弧氧化配方的优化[J].特种铸造及有色合金,2008(07):502-504+487-488. DOI：

Wang Ping, Li Jianping, Ma Qun. Optimization of Electrolyte Formula of Micro-arc Oxidation for Mg-9Gd-3Y-0.6Zn-0.5Zr Magnesium Alloy in Aluminate Solution[J]. Special Casting & Nonferrous Alloys, 2008,(7):502-504. DOI：

摘要

采用铝酸盐体系对Mg-9Gd-3Y-0.6Zn-0.5Zr镁合金进行了微弧氧化处理

并通过扫描电镜、X射线衍射、电化学测试技术等方法

研究了不同电解液浓度下微弧氧化膜层耐蚀性能及其形貌特征。结果表明

经微弧氧化处理

合金的耐蚀性能明显提高。通过4因素3水平的正交试验

确定了铝酸盐体系中进行微弧氧化处理电解液的最优配方:NaAlO2的质量浓度为5g/L

H2O2的体积浓度为1.0%

KF的质量浓度为6g/L

丙三醇的体积浓度为1.5%。所得膜层厚度均匀

主要由MgO、Al2O3和MgAl2O4组成

含有少量的MgF2存在。

Abstract

The Mg-9Gd-3Y-0.6Zn-0.5Zr magnesium alloy was treated by micro-arc oxidation in aluminite solution

and morphology and corrosion resistance of oxide coating at different electrolyte were investigated by SEM （scanning electron microscope）

X-ray and electrochemical testing. The results indicate that the corrosion resistance of the alloy can be greatly improved by MAO treatment. The optimized processing parameters as follows: NaAlO2 of 5 g/L

H2O2 of 10mL/L

KF of 6g/L

glycerine of 15 mL/L. The coating with uniform thickness consists of MgO

Al2O3 and MgAl2O4 as well as a little MgF2 phase.