分析了武钢生产的WGJ510C2钢在青岛、琼海和江津3个大气暴露试验点, 暴露5 a的腐蚀数据. 结果表明, WGJ510C2钢的耐蚀性均优于Q345钢, 两者的相对耐蚀性在青岛站是150%, 在江津站是116%、在琼海站是146%. 大气暴露5 a带锈样的极化曲线测试结果表明, WGJ510C2钢的致钝电流、维钝电流均比对比钢Q345小, 说明其锈层致密, 防护性能好.
Five years atmospheric corrosion data collected from three exposure sites at Qingdao, Jiangjin and Qionghai of WISCO made WGJ510C2 steel were analyzed. The results indicate the corrosion resistance of WGJ510C2 is better than Q345 and the relative corrosion resistance for the two steels is 150%, 116% and 146% at Qingdao, Jiangjin and Qionghai respectively. The polarization curves of 5 year exposed rusty steel show that both the initial passivation current and the maintaining passivation current of WGJ510C2 are smaller than that of Q345, which indicates the better protective performance of WGJ510C2 may be due to its more compact rust layer.
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