椰油酸二乙醇酰胺对钢在三氯乙酸溶液中的缓蚀性能

仇莉, 李向红, 雷然, 邓书端

Inhibition Performance of Coconut Diethanolamide on Cold Rolled Steel in Trichloroacetic Acid Solution

QIU Li, LI Xianghong, LEI Ran, DENG Shuduan

表4 20 ℃时冷轧钢在不含或含CDEA的0.10 mol/L Cl3CCOOH中的EIS参数

Table 4 EIS parameters for the corrosion of cold rolled steel in 0.10 mol/L Cl3CCOOH solutions without and with different concentrations CDEA at 20 ℃

c / mg·L-1 Rs / Ω·cm2 Rt / Ω·cm2 RL / Ω·cm2 L / H·cm2 CPE /μF·cm-2 n χ2 ηR / % 0 8.6 5.8 10.6 17.4 3.89×10-4 0.98 3.4×10-3 --- 10 10.9 28.2 --- --- 3.0×10-4 0.83 2.4×10-3 79.3 50 10.5 181.0 --- --- 2.3×10-4 0.78 4.5×10-3 96.8 100 10.78 293.1 --- --- 3.0×10-4 0.68 2.6×10-3 98.0