花生壳提取物对冷轧钢在盐酸溶液中的缓蚀作用及机理

仇莉, 李向红, 雷沙, 郭崎, 邓书端

Corrosion Inhibition of Peanut Shell Extract on Cold Rolled Steel in Hydrochloric Acid Solution

QIU Li, LI Xianghong, LEI Sha, GUO Qi, DENG Shuduan

表6 20 ℃时CRS在1.0 mol/L HCl溶液中含不同浓度PSE的EIS参数

Table 6 EIS parameters of CRS electrode in 1.0 mol/L HCl solution with various PSE concentrations at 20 ℃

c / mg·L-1 Rs / Ω·cm2 Rt / Ω·cm2 CPE / μΩ·s a ·cm-2 a fmax / Hz Cdl / μF·cm-2 χ2 / 10-3 ηR / % SD 0 1.4 48.8 539.1 0.8657 23.95 275.0 8.3 - 20 1.4 164.6 315.7 0.7793 7.88 133.4 6.2 70.3 3.4 100 1.1 355.8 220.0 0.7776 4.52 104.5 8.9 86.3 2.8 200 1.3 390.2 152.5 0.8094 4.52 80.6 6.9 87.5 4.6