菟丝子提取物与碘化钾对冷轧钢在盐酸中的缓蚀协同效应

吴浩, 邓书端, 李向红

Synergistic Inhibition Effect of Cuscuta Chinensis Lam Extract and Potassium Iodide on Cold Rolled Steel in Hydrochloric Acid

WU Hao, DENG Shuduan, LI Xianghong

表3 20 ℃时冷轧钢在不含和含有CCLE和CCLE/KI的1.0 mol/L HCl中的EIS拟合参数

Table 3 Fitting parameters of EIS of cold rolled steel in 1.0 mol/L HCl solutions without and with CCLE and CCLE/KI at 20 ℃

Inhibitor c / mg·L-1 Rs / Ω·cm2 Rt / Ω·cm2 Q / μΩ-1·sa·cm-2 a Cdl / μF·cm-2 χ 2 ηR / % CCLE 0 1.5 102.3 108 0.90 65 1.6×10-3 --- 10 1.3 218.1 81 0.90 52 4.5×10-3 53.1 50 1.2 388.8 96 0.84 51 8.6×10-3 73.7 100 1.4 487.7 78 0.86 45 4.8×10-3 79.0 CCLE+10 mg/L KI 10 1.4 346.0 86 0.87 52 4.8×10-3 70.4 50 1.4 496.8 80 0.85 48 4.4×10-3 79.4 100 1.2 524.1 72 0.85 40 8.1×10-3 80.5