桥梁钢Q345q在3种模拟大气环境中的腐蚀行为研究

郭铁明,张延文,秦俊山,宋志涛,董建军,杨新龙,南雪丽

Corrosion Behavior of Q345q Bridge Steel in Three Simulated Atmospheres

Tieming GUO,Yanwen ZHANG,Junshan QIN,Zhitao SONG,Jianjun DONG

表4 带锈Q345q钢的极化曲线参数

Table 4 Electrochemical parameters of polarization curves of Q345q steel samples with rust scale

Time / h Corrosion solution Ecorr / V Icorr / mA·cm-2 24 Deicing salt -0.8966 0.0364 NaHSO3 -0.8421 0.4018 Mixed solution -0.8701 0.2293 72 Deicing salt -0.8313 0.1557 NaHSO3 -0.8279 0.3734 Mixed solution -0.8421 0.2565 144 Deicing salt -0.7793 0.2245 NaHSO3 -0.6413 0.2487 Mixed solution -0.7768 0.2287 288 Deicing salt -0.7279 0.2403 NaHSO3 -0.6693 0.1972 Mixed solution 0.6879 0.1986 480 Deicing salt -0.6797 0.2474 NaHSO3 -0.5352 0.0520 Mixed solution -0.6178 0.1729