温度对5Cr钢在模拟油田高温高压环境中CO2 腐蚀行为的影响

温度对5Cr钢在模拟油田高温高压环境中CO₂ 腐蚀行为的影响

赵国仙, 刘冉冉, 丁浪勇, 张思琦, 郭梦龙, 王映超

Effect of Temperature on CO₂-inducedCorrosion Behavior of 5Cr Steel in a Simulated Oilfield Produced High-temperature and High-pressured Water

ZHAO Guoxian, LIU Ranran, DING Langyong, ZHANG Siqi, GUO Menglong, WANG Yingchao

表3 5Cr钢在50℃下浸泡不同时间后阻抗谱拟合结果

Table 3 Fitting parameters of EIS of 5Cr steel immersed at 50^oC for different time

Time d	R_s Ω·cm²	C_f μF·cm^-2	R_t Ω·cm²	Y_dl S·s ⁿ ·cm^-2	n_dl	R_c Ω·cm²
0	0.718	53.26	1.944	1.342 × 10^-4	0.6747	424.3
1	1.262	33.21	42.180	6.043 × 10^-4	0.7461	1986.0
3	1.089	46.78	28.880	1.077 × 10^-4	0.7326	2133.0
7	1.376	37.30	42.190	5.963 × 10^-4	0.7637	1740.0
12	9.232	72.14	91.480	2.330 × 10^-4	0.8162	2976.0
14	10.950	85.26	120.00	2.270 × 10^-4	0.8318	2982.0