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1 10#钢表面涂覆涂层后在3.5%Nacl溶液中得的电化学拟合参数

Table 1 Electrochemical fitting parameters obtained in 3.5%Nacl solution after coating the surface of 10# steel

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 2.96 × 10-4 2.34 × 10-10 0.948 3.76 × 1010 - - - - 9.328 × 10-3 2 1.40 × 10-2 2.03 × 10-10 0.966 2.79 × 106 1.33 × 10-9 0.463 9.80 × 107 - 9.612 × 10-4 4 2.89 × 10-4 3.16 × 10-9 0.948 2.50 × 106 2.92 × 10-8 0.715 3.62 × 106 - 1.237 × 10-3 6 1.02 × 10-3 3.42 × 10-10 0.940 6.44 × 106 1.28 × 10-8 0.783 6.88 × 106 - 9.641 × 10-4 12 1.02 × 10-3 3.42 × 10-10 0.940 6.44 × 106 1.28 × 10-8 0.783 6.88 × 106 - 4.831 × 10-4 24 37.1 3.28 × 10-10 0.946 9.43 × 105 8.66 × 10-8 0.586 2.34 × 106 - 1.619 × 10-4 48 128 3.35 × 10-10 0.947 1.02 × 106 2.14 × 10-7 0.487 1.62 × 106 - 2.537 × 10-4 72 49.2 3.53 × 10-10 0.944 1.08 × 106 7.88 × 10-7 0.412 1.55 × 106 - 1.001 × 10-4 96 40.7 3.50 × 10-10 0.944 2.60 × 106 6.98 × 10-7 0.480 6.76 × 106 - 5.418 × 10-5 120 109 3.35 × 10-10 0.947 3.32 × 106 6.80 × 10-7 0.436 1.26 × 107 - 6.914 × 10-5 144 68.6 3.56 × 10-10 0.943 3.74 × 106 6.48 × 10-7 0.388 9.29 × 106 - 3.642 × 10-5 192 684 3.76 × 10-10 0.942 4.10 × 105 2.64 × 10-7 0.085 9.36 × 106 - 8.478 × 10-4 240 7.42 × 10-3 3.47 × 10-10 0.936 1.20 × 106 1.63 × 10-7 0.372 1.25 × 106 1.75 × 10-6 1.923 × 10-4 288 1.00 × 10-2 3.24 × 10-10 0.941 9.01 × 105 1.68 × 10-7 0.305 1.47 × 106 1.69 × 10-6 2.082 × 10-4 336 3.35 × 10-3 3.16 × 10-10 0.944 2.28 × 105 1.08 × 10-7 0.213 1.87 × 106 1.99 × 10-6 1.623 × 10-4 384 1.00 × 10-2 3.75 × 10-10 0.939 8.34 × 105 9.90 × 10-7 0.300 1.41 × 106 1.18 × 10-6 2.102 × 10-5 480 30.1 3.45 × 10-10 0.943 9.43 × 105 6.46 × 10-7 0.301 1.90 × 106 1.96 × 10-6 3.349 × 10-5 816 4.27 × 10-5 2.58 × 10-10 0.952 5.61 × 105 1.59 × 10-7 0.199 2.04 × 106 1.49 × 10-6 1.492 × 10-4 1080 76.9 4.53 × 10-10 0.933 1.13 × 105 1.24 × 10-6 0.303 7.79 × 105 - 4.257 × 10-4 1296 16.1 5.98 × 10-10 0.918 1.02 × 105 2.88 × 10-6 0.265 5.61 × 105 - 1.950 × 10-4 1560 159 7.49 × 10-8 0.721 1.10 × 103 9.78 × 10-5 0.431 4.20 × 104 - 3.122 × 10-3 1968 294 4.70 × 10-8 0.784 9.51 × 102 9.79 × 10-5 0.430 4.24 × 104 - 3.152 × 10-3 2448 71.5 4.60 × 10-7 0.610 7.77 × 102 1.04 × 10-4 0.577 7.37 × 106 - 3.015 × 10-3 2808 60.2 8.07 × 10-7 0.582 4.73 × 102 1.47 × 10-4 0.693 1.27 × 104 - 1.025 × 10-3 3144 35.6 1.01 × 10-6 0.555 5.36 × 102 2.00 × 10-4 0.707 1.47 × 104 - 6.570 × 10-4 3336 61.9 1.06 × 10-6 0.572 3.91 × 102 2.74 × 10-4 0.696 1.25 × 104 - 9.363 × 10-4 3500 66.8 1.23 × 10-6 0.570 3.27 × 102 3.30 × 10-4 0.698 1.27 × 104 - 9.130 × 10-4