INFLUENCE OF VOLTAGES ON PERFORMANCE OF ANODIC FILMS OF Mg ALLOY BY CONSTANT VOLTAGE ANODIC OXIDATION
恒压阳极氧化对镁合金氧化膜的影响

The influence of voltages on anodic films of Mg alloy by constant voltage anodic oxidation was studied.By voltage of 10V,no sparks could be found on the surface of the sample,corresponding to a traditional anodizing.By voltages of 15,20 and 25V,a multitude of small sparks covered the entire surfaces of the samples.These can be described as a micro-arcing regime.The films formed by 10,15,20 and 25 V were mainly composed of Al2O3,Na4(AlSiO4)3(OH),Al2SiO5 and SiO2.It was found that corrosion resistance increas...