Mg-Mn-RE微弧氧化陶瓷膜层耐蚀性对比研究

李玉海, 张白冰, 董旭光, 王帅

Comparative Study on Corrosion Resistance of Micro Arc Oxidation Ceramic Coatings on Mg-Mn-RE Alloy

LI Yuhai, ZHANG Baibing, DONG Xuguang, WANG Shuai

表1 Tafel极化曲线拟合数据

Table 1 Fitted data of Tafel polarization cuves

No.	E_corr/V	I_corr/Acm^-2	b_c/mV	b_a/mV	R_p/Ωcm²
Substrate	-1.57	1.775×10^-4	4.129	8.699	1.91×10²
Coating /Na₃PO₄system	-1.56	1.459×10^-6	6.578	16.660	1.37×10⁴
Coating /NaAlO₂system	-1.49	1.362×10^-6	5.344	5.248	2.75×10⁴
Coating /Na₂SiO₃system	-1.46	1.781×10^-6	6.213	12.136	1.33×10⁴