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2 20#碳钢在25 ℃含有不同浓度苯丙酸咪唑啉的3.5%NaCl溶液中的极化曲线拟合参数

Table 2 Fitting parameters of 20# carbon steel in 3.5%NaCl solution containing different concentrations of imidazoline phenylpropionate 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 -695.54 20.85 52.82 1727.27 0.3353 0.5902 57.94 200 -698.00 18.24 55.34 1055.22 0.4684 0.7610 63.21 300 -693.89 19.27 55.28 586.15 0.2536 0.4318 61.13 600 -682.65 18.94 33.10 245.03 0.0815 0.2553 61.79