环境因素对X100钢表面钝化膜性能的影响

赵阳, 梁平, 史艳华, 张云霞

Influence of Environmental Factors on Property of Passive Film Formed on X100 Pipeline Steel

ZHAO Yang, LIANG Ping, SHI Yanhua, ZHANG Yunxia

表2 电化学阻抗图的拟合结果

Table 2 Fitting results of the electrochemical impedance spectroscopies

Temperature ℃ Formation potential / V RS Ωcm2 Qf×10-4 Fcm2 n1 Rf×104 Ωcm2 Qdl×10-4 Fcm2 n2 Rct×103 Ωcm2 20 0.1 11.82 5.750 0.927 3.170 6.82 0.912 5.360 0.2 14.14 5.403 0.926 3.581 6.88 0.911 9.761 0.3 10.67 5.359 0.929 4.057 5.68 0.920 12.19 0.4 6.058 5.074 0.927 5.233 4.28 0.937 14.01 40 0.1 8.932 5.970 0.901 1.588 4.63 0.901 2.491 0.2 6.027 7.249 0.917 2.652 5.54 0.945 5.854 0.3 5.469 6.542 0.913 4.414 6.87 0.916 6.542 0.4 5.285 5.536 0.904 5.125 7.72 0.925 6.933 60 0.1 4.311 4.942 0.945 1.088 6.70 0.914 2.246 0.2 5.124 5.893 0.913 2.430 7.75 0.946 4.562 0.3 3.461 5.714 0.925 4.018 6.21 0.936 5.623 0.4 6.156 6.321 0.905 5.048 5.45 0.906 5.825