单组分氟碳改性环氧涂层对碳钢和铝合金长期防腐性能的对比研究

王得, 张璠, 王兴奇, 张贺新, 赵成志, 杨延格

Long-term Corrosion Resistance of Carbon Steel and Al-alloy with Single Component Fluorocarbon Modified Epoxy Coating

WANG De, ZHANG Fan, WANG Xingqi, ZHANG Hexin, ZHAO Chengzhi, YANG Yange

表2 LY12铝合金表面涂覆涂层后在3.5%Nacl溶液中得的电化学拟合参数

Table 2 Electrochemical fitting parameters obtained in 3.5%Nacl solution after coating the surface of LY12 Al-alloy

Time / h Rs / Ω·cm2 Qc / F·cm-2 n1 Rc / Ω·cm2 Qdl / F·cm-2 n2 Rct / Ω·cm2 W / Ω·cm2 σ2 0 1.00 × 102 3.01 × 10-10 0.954 8.63 × 106 6.82 × 10-9 0.813 4.00 × 107 5.12 × 10-7 2.87 × 10-3 2 1.00 × 10-2 1.00 × 10-9 0.871 2.64 × 107 1.88 × 10-9 0.875 8.28 × 107 2.50 × 10-8 1.27 × 10-3 4 1.00 × 103 1.61 × 10-9 0.843 4.13 × 106 7.30 × 10-10 0.935 7.10 × 107 1.92 × 10-8 8.37 × 10-4 6 1.00 × 102 2.55 × 10-9 0.808 2.01 × 106 7.94 × 10-9 0.825 1.93 × 107 1.56 × 10-7 7.44 × 10-3 12 1.00 × 10-2 3.43 × 10-9 0.787 3.25 × 106 2.34 × 10-9 0.900 5.82 × 106 7.80 × 10-8 3.23 × 10-3 24 6.68 × 10-2 1.62 × 10-9 0.849 1.82 × 107 5.44 × 10-9 0.750 7.17 × 107 1.02 × 10-7 4.44 × 10-3 48 3.31 × 104 1.85 × 10-9 0.837 4.82 × 105 3.95 × 10-9 0.867 6.10 × 107 9.43 × 10-8 2.72 × 10-3 72 1.00 × 10-2 1.41 × 10-9 0.859 3.48 × 106 5.27 × 10-9 0.810 8.01 × 107 5.70 × 10-8 3.81 × 10-3 96 1.00 × 10-2 6.38 × 10-11 0.919 1.97 × 105 7.70 × 10-9 0.764 1.28 × 108 5.10 × 10-8 2.65 × 10-3 120 1.00 × 102 5.71 × 10-10 0.927 1.51 × 106 6.42 × 10-9 0.808 1.34 × 108 5.94 × 10-8 8.24 × 10-4 168 1.00 × 103 5.59 × 10-10 0.932 6.67 × 105 7.84 × 10-9 0.786 9.65 × 107 6.85 × 10-8 2.77 × 10-3 192 3.47 × 10-2 6.58 × 10-10 0.921 6.92 × 105 9.09 × 10-9 0.825 6.83 × 107 1.01 × 10-5 1.96 × 10-3 240 1.00 × 10-2 5.82 × 10-10 0.929 1.78 × 106 1.20 × 10-8 0.773 9.06 × 107 7.26 × 10-8 3.45 × 10-3 288 1.00 × 10-2 4.86 × 10-10 0.943 1.68 × 104 9.68 × 10-9 0.849 8.30 × 107 3.92 × 10-8 1.14 × 10-2 336 1.00 × 10-2 4.57 × 10-9 0.949 1.95 × 105 1.24 × 10-8 0.804 6.17 × 107 7.65 × 10-8 7.50 × 10-4 384 1.00 × 103 3.70 × 10-10 0.964 1.97 × 105 1.32 × 10-8 0.774 1.09 × 108 6.77 × 10-8 4.46 × 10-4 432 1.00 × 10-2 3.36 × 10-10 0.970 2.02 × 107 2.79 × 10-8 0.720 7.56 × 107 2.27 × 10-7 2.33 × 10-3 480 1.00 × 103 3.66 × 10-10 0.962 2.81 × 105 1.68 × 10-8 0.776 1.00 × 108 2.61 × 10-7 6.33 × 10-4 576 1.00 × 10-2 4.06 × 10-8 0.956 1.57 × 105 1.71 × 10-8 0.770 5.11 × 107 1.56 × 10-7 1.51 × 10-3 696 1.27 × 10-2 3.48 × 10-10 0.967 1.04 × 105 1.50 × 10-8 0.773 5.91 × 107 1.30 × 10-6 1.60 × 10-3 816 1.00 × 10-2 2.16 × 10-10 1.000 6.62 × 105 1.40 × 10-8 0.737 8.80 × 107 9.73 × 10-8 2.68 × 10-3 1080 1.00 × 10-2 3.73 × 10-10 0.960 8.76 × 104 2.15 × 10-8 0.816 2.28 × 107 8.00 × 10-8 1.22 × 10-3 1296 1.00 × 10-2 5.87 × 10-10 0.921 3.42 × 105 5.38 × 10-8 0.859 1.72 × 107 8.74 × 10-9 5.80 × 10-3 1560 1.00 × 10-2 8.39 × 10-10 0.896 4.80 × 105 6.94 × 10-8 0.895 1.02 × 108 3.31 × 10-7 5.05 × 10-3 1968 1.00 × 103 1.72 × 10-9 0.848 5.02 × 104 9.05 × 10-8 0.877 6.07 × 106 5.18 × 10-7 1.82 × 10-3 2448 1.00 × 103 4.46 × 10-9 0.782 2.40 × 104 1.01 × 10-7 0.850 1.12 × 107 3.12 × 10-7 6.10 × 10-3 2808 1.00 × 103 2.10 × 10-8 0.675 2.21 × 104 1.34 × 10-7 0.889 3.80 × 106 1.66 × 10-6 8.04 × 10-3 3144 1.00 × 103 7.92 × 10-9 0.745 2.31 × 104 2.94 × 10-7 0.881 4.00 × 106 2.42 × 10-6 8.75 × 10-3 3336 1.00 × 10-2 1.66 × 10-9 0.692 2.46 × 104 3.49 × 10-7 0.864 2.74 × 106 3.05 × 10-6 9.65 × 10-3 3500 1.00 × 10-2 1.70 × 10-8 0.693 2.01 × 104 4.08 × 10-7 0.845 1.79 × 106 7.18 × 10-8 9.28 × 10-3