AZ31镁合金表面苯丙氨酸、甲硫氨酸和天冬酰胺诱导Ca-P涂层耐蚀性能比较

王雪梅, 殷正正, 于晓彤, 邹玉红, 曾荣昌

Comparison of Corrosion Resistance of Phenylalanine, Methionine, and Asparagine-Induced Ca-P Coatings on AZ31 Magnesium Alloys

WANG Xuemei, YIN Zhengzheng, YU Xiaotong, ZOU Yuhong, ZENG Rongchang

表3 AZ31镁合金、Ca-P涂层和3种氨基酸诱导Ca-P涂层的EIS拟合数据

Table 3 EIS analysis results of AZ31 Mg alloy, Ca-P coating, Ca-PPhe coating, Ca-PMet coating, and Ca-PAsn coating

Sample Rs CPE1 n1 R1 CPE2 n2 Rct L RL Ω·cm2 10-5 Ω-1·sn1·cm-2 kΩ·cm2 10-5 Ω-1·sn2·cm-2 Ω·cm2 H·cm2 Ω·cm2 AZ31 85.88 1.278 0.9056 - - - 578.5 439.7 231.5 Ca-P 57.25 0.136 0.6946 - 2.616 0.6438 593.8 3.7 6856.0 Ca-PPhe 70.00 0.875 0.6515 289.6 1.582 0.7757 7266.0 - - Ca-PMet 84.64 1.859 0.6809 226.3 1.693 0.8297 7465.0 - - Ca-PAsn 80.93 0.742 0.6782 157.8 1.873 0.8144 8552.0 - -