带氧化皮Q345q钢在模拟西北典型大气环境中的腐蚀行为研究

张延文,郭铁明,宋志涛,南雪丽,徐秀杰,董志林

Corrosion Behavior of Q345q Steel with Oxide Scale in Simulated Typical Atmospheric Environmentin Northwest China

Yanwen ZHANG,Tieming GUO,Zhitao SONG,Xueli NAN,Xiujie XU,Zhilin DONG

表4 带氧化皮Q345q钢在3种溶液中腐蚀不同时间后的电化学参数

Table 4 Electrochemical parameters of Q345q steel with oxide scale after corrosion for different time in three solutions

Corrosion solution Parameters 24 h 72 h 144 h 288 h 480 h Deicing salt Ecorr/V -0.6693 -0.6969 -0.7279 -0.6797 -0.6316 Icorr/mA·cm-2 0.1389 0.1804 0.1338 0.1843 0.2977 NaHSO3 Ecorr/V -0.9795 -0.9758 -0.8899 -0.7693 -0.6764 Icorr/mA·cm-2 0.1305 0.1048 0.1092 0.1475 0.0558 Deicing salt+NaHSO3 Ecorr/V -0.6659 -0.7141 -0.7798 -0.7074 -0.6868 Icorr/mA·cm-2 0.1737 0.1836 0.1951 0.1893 0.1747