等离子处理对医用镁合金表面聚合物防护涂层的影响

李鹏宇, 刘子童, 亢淑梅, 陈姗姗

Effect of Plasma Treatment on Performance of Polybutylene Adipate Coating on Biomedical AZ31 Mg-alloy

LI Pengyu, LIU Zitong, KANG Shumei, CHEN Shanshan

表6 不同等离子处理后PBA防护涂层样品的等效电路拟合结果

Table 6 Equivalent circuit diagram fitting results of samples with PBA protective coatings after different plasma treatments

Samples Rs / Ω∙cm2 C / F∙cm-2 Rf / Ω∙cm2 CPE/F∙cm-2 n Rct / Ω∙cm2 RL / Ω∙cm2 L / H∙cm2 Mg 1.993×10-4 - - 1.503×10-5 0.8162 2.812×104 1.666×104 7.598×104 F 4.236×10-4 - - 9.100×10-5 0.9291 8.003×104 5.672×104 9.134×104 PBA 1.336×10-4 6.824×10-10 2.168×105 7.742×10-8 0.5001 3.487×107 - - 60 W/20 s 5.552×10-4 7.176×10-10 9.280×103 1.680×10-7 0.5149 7.169×106 - - 60 W/40 s 1.520×10-4 1.005×10-10 5.886×104 4.119×10-7 0.5358 8.251×106 - - 60 W/60 s 6.237×10-4 7.070×10-10 1.179×104 6.006×10-7 0.4832 2.044×107 - - 60 W/180 s 5.367×10-4 2.578×10-10 9.079×103 1.122×10-7 0.5493 8.132×106 - - 60 W/300 s 8.897×10-4 6.154×10-10 2.009×104 1.299×10-7 0.4946 7.548×106 - - 90 W/300 s 7.762×10-4 1.347×10-10 1.619×104 1.445×10-7 0.5271 5.980×106 - - 120 W/300 s 8.545×10-4 3.271×10-10 2.399×104 1.452×10-7 0.4019 6.861×106 - -