咪唑啉类衍生物缓蚀性能研究

刘建国,高歌,徐亚洲,李自力,季菀然

Corrosion Inhibition Performance of Imidazoline Derivatives

Jianguo LIU,Ge GAO,Yazhou XU,Zili LI,Wanran JI

表1 20#碳钢在25 ℃含有不同浓度十六烷基咪唑啉的3.5%NaCl溶液中的极化曲线拟合参数

Table 1 Fitting parameters of 20# carbon steel in 3.5%NaCl solution containing different concentrations of sixteen alkyl imidazoline at 25 ℃

Concentration / mg·L-1 Ecorr/ mV Icorr/ μA·cm-2 Ba/ mV Bc/ mV fa fc IE / % 0 -728.37 49.58 72.10 1098.61 --- --- --- 140 -634.22 8.384 27.16 160.25 0.0047 0.0789 83.09 200 -639.91 10.34 57.15 260.49 0.0114 0.0372 79.14 300 -645.15 2.72 59.56 223.38 0.0116 0.0316 94.51 600 -617.77 2.48 32.33 119.21 0.0014 0.0166 94.98