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3 25 ℃下20#钢在添加不同缓蚀剂的3.5%NaCl溶液中的电化学阻抗谱拟合结果

Table 3 Fitting parameters of 20# carbon steel in 3.5%NaCl solutions containing different inhibitors at 25 ℃

Inhibitor Concentration / mg·L-1 Rs/ Ω·cm2 Y0/ μF·cm-2 n Rct/ kΩ·cm2 L/ H·cm-2 IE / % Without --- 6.21 472.1 0.7928 0.2803 1461 --- Sixteen alkyl imidazoline 140 2.327 87.3 0.7599 1.537 --- 81.76 200 4.638 80.6 0.793 4.187 --- 93.30 300 5.552 77.2 0.7303 4.453 --- 93.71 600 5.428 67.1 0.7632 4.324 --- 93.51 Imidazoline phenylpropionate 140 2.537 193 0.7623 0.7381 16520 62.02 200 5.871 122 0.7936 0.8856 8825 68.34 300 3.837 207 0.7533 0.7627 5490 63.25 600 3.937 211 0.7996 0.8000 8314 64.96