咪唑啉衍生物与硫脲对X65钢在惰性沉积物垢下腐蚀的缓蚀机理研究

盖明月, 张静, 王崇坤, 李秀美

Corrosion Inhibition Performance of Imidazoline Derivatives and Thiourea on X65 Steel Under Inert Deposits Scale in an Artificial CO2 Saturated Oilfield Produced Water

GAI Mingyue, ZHANG Jing, WANG Chongkun, LI Xiumei

表2 SiO2垢下电极在TU/IM不同复配比例缓蚀溶液中浸泡72 h的EIS谱拟合结果

Table 2 Fitting parameters of EIS of X65 electrode covered with SiO2 after immersion for 72 h in simulated solutions containing different mass ratios of TU and IM

Mass ratios Rs Cdl ndl Rct ηEIS / Ω·cm2 / μF·cm-2 / Ω·cm2 / % Blank 92.69 135.0 0.67 1584 - TU:IM = 1:0 19.18 58.8 0.91 37745 88.15 TU:IM = 2:1 30.49 61.3 0.87 92720 95.17 TU:IM = 1:1 32.27 130.0 0.88 100720 95.56 TU:IM = 1:2 43.49 303.0 0.73 7208 37.98 TU:IM = 0:1 27.14 280.0 0.76 2940 -52.04