碳钢和高强钢在南海大气环境中的初期腐蚀行为研究

王靖羽, 周学杰, 王洪伦, 吴军, 陈昊, 郑鹏华

Initial Corrosion Behavior of Carbon Steel and High Strength Steel in South China Sea Atmosphere

WANG Jingyu, ZHOU Xuejie, WANG Honglun, WU Jun, CHEN Hao, ZHENG Penghua

表2 4种钢材腐蚀试验0.5和1 a后的电化学拟合结果

Table 2 Electrochemical fitting results of four kinds of steels after 0.5 and 1 a corrosion

Steel Time / a Ecorr / mV Icorr / μA·cm-2 Rs / Ω·cm2 CPEr / F Rt / Ω·cm2 CPEdl / F Rct / Ω·cm2 Q235B 0.5 -489.195 0.884 5.69 0.00531 11.83 0.04776 583.3 Q350EWR1 0.5 -430.571 1.125 5.98 0.00604 8.85 0.03894 445.1 Q355 0.5 -411.487 0.961 6.33 0.00024 81.57 0.00279 1883.2 Q345NQR2 0.5 -424.114 0.029 6.06 0.00086 68.37 0.00466 1416.4 Q235B 1 -353.367 1.482 5.79 0.00182 24.45 0.02745 465.9 Q350EWR1 1 -333.529 1.645 5.88 0.00136 20.04 0.03306 428.6 Q355 1 -378.683 1.222 6.01 0.00021 87.66 0.00118 1765.2 Q345NQR2 1 -336.445 0.571 6.14 0.00090 56.58 0.00153 860.5