Q345q桥梁钢和Q345qNH耐候钢在模拟工业大气+除冰盐混合介质中的腐蚀行为

郭铁明, 徐秀杰, 张延文, 宋志涛, 董志林, 金玉花

Corrosion Behavior of Q345q Bridge Steel and Q345qNH Weathering Steel in a Mixed Medium of Simulated Industrial Environment Solution and Deicing Salt

GUO Tieming, XU Xiujie, ZHANG Yanwen, SONG Zhitao, DONG Zhilin, JIN Yuhua

表4 Q345钢腐蚀不同时间后锈层的电化学参数

Table 4 Electrochemical parameter of Q345 steel the rust layer after corrosion fore different times

Steels Electrochemical parameter 24 h 72 h 144 h 288 h 480 h Q345qNH Ecorr/V -0.8909 -0.8714 -0.7488 -0.799 -0.6566 Icorr/mA·cm-2 0.2543 0.3080 0.2139 0.2014 0.1405 Q345q Ecorr/V -0.9321 -0.906 -0.7891 -0.8052 -0.7563 Icorr/mA·cm-2 0.1656 0.2666 0.2367 0.1409 0.2240