中文摘要：

同时， AZ31 镁合金的腐蚀性质被 potentiodynamic 极化曲线和电气化学的阻抗光谱学(EIS ) 技术学习化学变换层的保护的类型和 AZ31 镁合金的阳极化的涂层也是的二个环境联盟者的保护的性质讨论了。化学变换洗澡的部件是 NaH2O4 12H2O 20 g/L ， H3PO4 7.4 mL/L ， NaNO2 3 g/L ， Zn ( NO3 )阳极化洗澡的 2 ·6 H2O 5 g/L 和 NaF 1g L ，和部件是 Na2SiO3 60 g/L ， C6H5Na3O72H2O 50 g/L ， KOH 100 g/L 和 Na2B4O7 ·2 H2O 20 g L 。结果证明有酸碱值的增加的 AZ3 1 镁增加的腐蚀抵抗腐蚀剂媒介珍视。为在 80 ° C 获得的化学变换层， 10 min 是处理时间和化学变换层的电嗬转移抵抗的最好到 10 次将近被提高。为 AZ31 的阳极化处理时间的最佳是 60 min，在早沉浸阶段的阳极化的样品的电嗬转移抵抗价值是将近 26 次空白的样品的，阳极化的样品的腐蚀类型是 pitting。

英文摘要：

The corrosion properties of AZ31 magnesium alloys were studied by potentiodynamic polarization curves and electrochemical impedance spectroscopy（E1S） techniques, meanwhile, the protective properties of two environmentally protective types of chemical conversion layers and anodized coatings of AZ31 magnesium alloys were also discussed. The component of chemical conversion bath is NaH2PO4·12H2O 20 g/L, H3PO4 7.4 mL/L, NaNO2 3 g/L, Zn（NO3）2·6H2O 5 g/L and NaF 1 g/L, and components of the anodization bath is Na2SiO3 60 g/L, C6H5Na3O7·2H2O 50 g/L, KOH 100 g/L and Na2B4O7·2H2O 20 g/L. The results show that the corrosion resistance of AZ31 magnesium increases with the increase of pH value of the corrosive medium. For the chemical conversion layer acquired at 80 ℃, 10 min is the best processing time and the charge transfer resistance of the chemical conversion layer is enhanced nearly by 10 times. The optimum processing time for the anodization of AZ31 is 60 min, the charge transfer resistance value of the anodized sample at the early immersion stage is nearly 26 times of that of the blank sample and the corrosion type of the anodized samples is pitting.