水热处理对<strong>AZ31</strong>镁合金微弧氧化陶瓷层组织结构及耐蚀性的影响

水热处理对AZ31镁合金微弧氧化陶瓷层组织结构及耐蚀性的影响

王志虎,张菊梅,白力静,张国君

Effect of Hydrothermal Treatment on Microstructure and Corrosion Resistance of Micro-arc Oxidization Ceramic Layer on AZ31 Mg-alloy

Zhihu WANG,Jumei ZHANG,Lijing BAI,Guojun ZHANG

表1 AZ31基体及三种膜层的电化学拟合参数

Table1 Polarization parameters of AZ31 and three coatings

Samples	E_{corr, SCE}/V	I_corr/A·cm^-2	R_p/Ω·cm²
AZ31	-1.490	3.44×10^-5	1.46×10³
MAO	-1.364	5.78×10^-8	2.11×10⁶
HT-1/MAO	-1.378	1.35×10^-8	6.26×10⁶
HT-2/MAO	-1.220	3.17×10^-9	1.97×10⁷