摘要
在铝酸盐体系中对AZ91D镁合金进行微弧氧化处理。利用田口式实验设计法探讨微弧氧化过程电参数对膜层耐蚀性的影响,确定了最佳工艺参数为:电压180V,氧化时间30min,频率50Hz,占空比30%。用交流阻抗分析膜层的耐腐蚀性能,结果表明:最佳工艺条件下所制备微弧氧化,膜层电阻比镁合金基体提高了2个数量级,耐蚀性有所增强。
Micro-arc oxidation films were prepared on magnesium alloy AZ91D in a atuminate electrolyte. The effects of electric parameters during the micro-arc oxidation vestigated using the Taguchi experimental analysis method. process on properties of MAO films were systematically in The optimized parameters are 180 V voltage,30 min oxida tion time,50 Hz frequency,30% duty cycle. The corrosion resistance of the MAO film was examined by means of AC impedance. The results show that the resistance of MAO film treated on optimized conditions increase by two orders compared with the magnesium alloy substrate. This enhances the corrosion resistance of the magnesium alloy.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2012年第1期37-40,共4页
Surface Technology
基金
广西教育厅科研项目(200911MS110)
广西教育厅科研项目(201012MS104)
关键词
镁合金
微弧氧化
电参数
田口式实验设计法
交流阻抗
magnesium alloy
micro-arc oxidation
electric parameters
taguchi experimental analysis method
EIS
