硫酸盐还原菌作用下2205双相不锈钢在3.5%NaCl溶液中应力腐蚀开裂行为研究

王欣彤, 陈旭, 韩镇泽, 李承媛, 王岐山

Stress Corrosion Cracking Behavior of 2205 Duplex Stainless Steel in 3.5%NaCl Solution with Sulfate Reducing Bacteria

WANG Xintong, CHEN Xu, HAN Zhenze, LI Chengyuan, WANG Qishan

表1 2205不锈钢在3.5%NaCl溶液中动电位极化曲线拟合结果

Table 1 Fitting parameters of polarization curves of 2205 stainless steel in 3.5%NaCl solution

Condition Time / d Ip / μA·cm-2 Ecorr / mV Eb / mV Passivasion interval / mV Without SRB 3 4.26 (first passivation) -502 17 -380~17 28.2 (second passivation) 1200 380~1200 With SRB 3 502 -695 1165 -428~1165 8 602 -815 1297 -464~1279 10 1288 -682 1104 -476~1104 14 417 -828 1213 -488~1213