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4 SiO2沉积物覆盖下的电极在空白溶液及缓蚀溶液中浸泡不同时间的EIS谱拟合结果

Table 4 Fitting results of EIS of X65 electrode covered with SiO2 after immersion for different time in blank solution and various corrosion inhibition solutions

Inhibitor t / h Rs / Ω·cm2 Cdl / μF·cm-2 ndl Rct / Ω·cm2 L / H·cm-2 Blank 12 92.69 135 0.67 1584 706 24 47.21 251 0.66 1339 600 36 41.22 250 0.71 1661 - 48 34.68 245 0.73 2227 - 60 32.04 237 0.74 2415 - 72 23.69 238 0.77 4420 - IM 12 18.34 284 0.68 1055 716 24 18.47 276 0.69 1092 551 36 11.68 289 0.71 1678 - 48 21.32 305 0.69 2544 - 60 11.15 279 0.73 2920 - 72 27.14 280 0.76 2940 - TU 12 27.83 256 0.76 8554 501 24 21.57 166 0.85 6972 - 36 21.60 161 0.87 10830 - 48 20.48 157 0.87 17212 - 60 19.46 63 0.88 21170 - 72 19.18 59 0.89 37745 - TU/IM 12 62.23 173 0.83 1629 - 24 57.86 182 0.85 11888 - 36 47.48 167 0.86 24370 - 48 39.72 146 0.87 65057 - 60 36.81 143 0.87 88136 - 72 32.27 130 0.88 100720 -