三嗪季铵盐基高温高压CO2 缓蚀剂及缓蚀性能研究

邬春生, 张天永, 李彬, 苑文英, 张霄鸥, 姜爽, 汪怀远

Corrosion Inhibition Performance of Triazine-derived Quaternary Ammonium Salts for Q235 Carbon Steel in High Temperature and High Pressure CO2 Containing 3.5%NaCl Solution

WU Chunsheng, ZHANG Tianyong, LI Bin, YUAN Wenying, ZHANG Xiaoou, JIANG Shuang, WANG Huaiyuan

表4 图7所示的Q235钢EIS拟合参数

Table 4 Fitting parameters of EIS in Fig.7 for Q235 steel

c / mg·L-1 Rs / Ω·cm2 Rct / Ω·cm2 CPEdl / μF·cm-2 χ2 η / % 0 7.074 68.2 223.5 0.0026 225 8.048 1196.3 145.6 0.0015 93.75 300 6.712 1445.1 128.3 0.0012 94.82 375 7.198 2359.8 92.9 0.0005 96.82 450 7.256 1843.5 104.6 0.0008 95.93