H<sub>2</sub>S/CO<sub>2</sub>对J55钢腐蚀的影响机制

H₂S/CO₂对J55钢腐蚀的影响机制

赵国仙, 王映超, 张思琦, 宋洋

Influence Mechanism of H₂S/CO₂-charging on Corrosion of J55 Steel in an Artificial Solution

ZHAO Guoxian, WANG Yingchao, ZHANG Siqi, SONG Yang

表1 J55钢极化曲线Tafel拟合结果

Table 1 Fitting results of polarization curves of J55 steel under various test conditions

Condition	E_corr / mV	I₀ / μA·cm^-2	b_a / mV	b_c / mV
1.3 MPa N₂	-657.8	4.308	32.36	93.60
1.0 MPa CO₂+ 0.3 MPa N₂	-772.4	119.0	23.03	255.6
0.3 MPa H₂S+ 1.0 MPa N₂	-406.5	28.88	73.94	52.53
1.0 MPa CO₂+ 0.3 MPa H₂S	-382.6	16.52	43.91	95.28