小蓬草提取物对钢在HCl介质中的缓蚀作用

石成杰, 雷然, 邓书端, 徐娟, 邵丹丹, 郭青青, 李向红

Corrosion Inhibition of Erigeron canadensis L.Extract for Steel in HCl Solution

SHI Chengjie, LEI Ran, DENG Shuduan, XU Juan, SHAO Dandan, GUO Qingqing, LI Xianghong

表4 EIS拟合参数

Table 4 Fitting parameters of EIS

c / mg·L-1 Rs / Ω·cm2 Rt / Ω·cm2 Q / μΩ-1·s a ·cm-2 a fmax / Hz Cdl / μF·cm-2 χ2 ηR 0 1.4 56.9 307.7 0.8005 24 113 4.3 × 10-3 - 30 1.2 178.0 138.9 0.8747 7.88 85 7.2 × 10-3 68.0% 150 1.4 438.9 151.2 0.8224 4.52 83 1.4 × 10-3 87.0% 300 1.2 700.7 99.6 0.8482 4.52 60 1.0 × 10-2 91.9%