温度对X70钢在含CO<sub>2</sub>地层水中腐蚀行为影响

温度对X70钢在含CO₂地层水中腐蚀行为影响

明男希, 王岐山, 何川, 郑平, 陈旭

Effect of Temperature on Corrosion Behavior of X70 Steel in an Artificial CO₂-containing Formation Water

MING Nanxi, WANG Qishan, HE Chuan, ZHENG Ping, CHEN Xu

表1 不同温度下X70钢电化学阻抗图谱拟合结果

Table 1 EIS fitting results for X70 steel at various temperatures

Temperature ℃	R_s Ω·cm²	Q_f F·cm^-2	n₁	R_f Ω·cm²	Q_dl F·cm^-2	n₂	R_ct Ω·cm²
30	3.94	0.015	0.96	9.71	0.15	0.72	9.27
60	4.35	0.010	1	19.16	0.046	0.51	88.17
90	13.02	7.23×10^-4	0.34	20.42	5.6×10^-5	0.78	3179
120	14.73	1.25×10^-3	0.51	30.65	8.6×10^-4	1	240
150	1.20	4.15×10^-3	1	7.01	0.018	0.95	6.78