AZ91镁合金表面合成聚苯胺涂层及其腐蚀性能研究

潘太军, 汪涛

Corrosion Performance and Preparation of Polyaniline Film on the Surface of AZ91 Magnesium Alloy

PAN Taijun, WANG Tao

表3 沉积聚苯胺涂层的AZ91合金在3.5%NaCl溶液中腐蚀电化学阻抗谱参数拟合结果

Table 3 Fitted results of impedance spectra for Pani-coated AZ91 magnesium alloy after corrosion for varioustime in 3.5%NaCl solution

Times / h Rs / Ωcm2 Yo-f / Ω-1cm-2S-n nf Rf / Ωcm2 Yo-dl / Ω-1cm-2S-n ndl Rt / Ωcm2 0.25 25.89 4.26×10-4 0.740 476.60 1.93×10-3 0.740 102.7 1 23.26 2.81×10-4 0.630 906.80 9.88×10-4 0.820 163.5 10 21.91 1.82×10-4 0.720 1965 1.42×10-4 0.732 676.9 30 30.35 9.97×10-5 0.840 1.45×10-4 2.63×10-5 0.780 1777 80 26.46 6.25×10-5 0.724 3.25×10-4 3.22×10-4 0.820 2916 120 31.74 4.03×10-5 0.730 5.09×10-4 4.75×10-5 0.690 7033 144 28.47 1.32×10-5 0.680 3967 6.78×10-4 0.710 6689 160 26.21 2.21×10-4 0.600 37.98 7.98×10-4 0.720 3938