槐米提取物对Al在HCl溶液中的缓蚀作用

雷然, 石成杰, 李向红

Corrosion Inhibition of Aluminum in HCl Solution by Flos Sophorae Immaturus Extract

LEI Ran, SHI Chengjie, LI Xianghong

表4 Al在20 ℃下不含和含有不同浓度FSIE的1.0 mol/L HCl溶液中的EIS拟合参数

Table 4 Fitting parameters of EIS of aluminum in 1.0 mol/L HCl solutions containing different concentrations of FSIE at 20 ℃

c / mg·L-1 Rs / Ω·cm2 Rt / Ω·cm2 a L / H·cm2 RL / Ω·cm2 fmax / Hz Q / μΩ-1·s a ·cm-2 Cdl / μF·cm-2 χ2 ηR / % 0 1.033 13.1 0.9782 2.762 1.239 127 84.79 113.25 6.271×10-3 --- 50 1.035 19.73 0.9715 4.735 1.789 127 83.38 130.32 8.302×10-3 33.6 250 0.9713 33.78 0.9660 10.09 2.279 221 31.65 126.15 4.136×10-3 55.1 500 1.712 45.08 0.9822 9.946 4.243 41.8 72.84 91.33 6.815×10-3 70.9