20#钢在含饱和CO2的离子液体醇胺溶液中的腐蚀行为研究

贺三, 孙银娟, 张志浩, 成杰, 邱云鹏, 高超洋

Corrosion Behavior of 20# Steel in Alkanolamine Solution Mixed with Ionic Liquid Containing Saturated CO2

HE San, SUN Yinjuan, ZHANG Zhihao, CHENG Jie, QIU Yunpeng, GAO Chaoyang

表3 20#钢在30和70 ℃下含不同浓度[Bmim]BF4的混合溶液中浸泡0.5 h后阻抗拟合参数

Table 3 Fitting impedance parameters of 20# carbon steel in the mixed solutions with different concentrations of [Bmim]BF4 for 0.5 h at 30 and 70 ℃

Temperature / ℃ Mass fraction of [Bmim]BF4 / % Rs / Ω·cm2 CPE1-T / Ω-1·cm-2·s-1 CPE1-P Rp / Ω·cm2 Rt / Ω·cm2 CPE2-T / Ω-1·cm-2·s-1 30 0 3.556 4.38×10-4 0.78328 450.80 --- --- 5 4.106 4.17×10-4 0.79523 --- 563.8 2.1548×10-2 10 4.800 3.18×10-4 0.77613 --- 1101 7.0330×10-3 20 5.289 3.66×10-4 0.86637 --- 1513 8.0210×10-3 70 0 2.329 8.22×10-4 0.76553 80.93 --- --- 5 2.475 6.05×10-4 0.76703 --- 88.31 5.4759×10-1 10 2.533 6.34×10-4 0.75338 --- 94.37 1.6909×10-1 20 2.769 6.61×10-4 0.76547 --- 135.7 6.7300×10-1