船舶EH40钢在低温和常温海水中的腐蚀机理研究

刘家兵, 黄诗雨, 郭娜, 郭章伟, 刘涛

Corrosion Behavior of EH40 Marine Steel in Artificial Seawater at Low- and Ambient-Temperatures

LIU Jiabing, HUANG Shiyu, GUO Na, GUO Zhangwei, LIU Tao

表1 等效电路中所用元件的拟合值

Table 1 Fitting values for components used in equivalent circuits

Time / d Rs / Ω·cm2 CPEf / S·cm-2·s-n1 nf Rf / Ω·cm2 CPEdl / S·cm-2·s-n2 ndl Rct / Ω·cm2 χ2 / 10-4 0 ℃ 0 9.81 3.7 × 10-4 0.82 - - - 1789 25 3 9.28 4.6 × 10-4 0.77 252.3 1.0 × 10-3 0.62 2186 2.6 14 11.00 1.5 × 10-3 0.71 52.56 1.2 × 10-3 0.66 1094 0.6 25 ℃ 0 9.58 3.6 × 10-4 0.79 - - - 1729 7.0 3 9.50 3.1 × 10-4 0.84 150.5 6.2 × 10-4 0.64 1691 0.3 14 13.63 2.5 × 10-3 0.86 1047 5.4 × 10-4 0.89 1131 5.1