低合金钢在模拟海洋低温环境下的电偶腐蚀研究

王育鑫, 吴波, 戴乐阳, 胡科峰, 吴建华, 杨阳, 闫福磊, 张贤慧

Galvanic Corrosion Behavior for Coupling of Three Low Alloy Steels in Artificial Seawater at Low Temperatures

WANG Yuxin, WU Bo, DAI Leyang, HU Kefeng, WU Jianhua, YANG Yang, YAN Fulei, ZHANG Xianhui

表3 不同温度下电化学阻抗谱拟合结果

Table 3 Fitting results of EIS of three low-alloy steels at different temperatures

Temperature / ℃ Electrode Rs / Ω·cm2 QdL / μΩ-1·S n ·cm-2 n1 Rct / Ω·cm2 Qoxide / μΩ-1·S n ·cm-2 n2 Roxide / Ω·cm2 0 907A 18.21 683.3 0.875 775 45.3 0.816 653 921A 19.89 667.8 0.867 961 33.3 0.834 793 980 19.87 661.5 0.878 989 31.5 0.844 813 Coupled 907A 19.32 854.2 0.856 315 52.1 0.838 237 Coupled 921A 20.23 192.3 0.782 1732 24.7 0.836 638 Coupled 980 20.87 187.3 0.771 2213 23.6 0.817 898 10 907A 13.86 723.5 0.864 577 76.3 0.695 694 921A 13.75 695.4 0.845 795 64.5 0.819 538 980 15.21 690.5 0.831 834 61.6 0.846 684 Coupled 907A 14.84 877.2 0.885 298 86.7 0.889 219 Coupled 921A 14.87 198.5 0.796 1527 51.5 0.877 634 Coupled 980 15.21 193.5 0.866 1952 53.4 0.815 685 20 907A 9.77 813.5 0.841 344 81.4 0.875 487 921A 10.17 731.4 0.861 631 69.8 0.811 454 980 10.27 711.5 0.822 727 70.4 0.829 511 Coupled 907A 9.98 892.4 0.819 290 89.1 0.837 212 Coupled 921A 9.52 224.3 0.799 1324 61.7 0.861 598 Coupled 980 9.86 213.6 0.806 1503 60.8 0.884 618