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科学通报  2012 

在含硫污染的海洋大气环境中核电用钢的腐蚀行为

DOI: 10.1360/972011-1614, PP. 2991-2998

Keywords: 大气腐蚀,,核电站,SO2,Cl-

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Abstract:

利用XRD,FTIR和SEM分析技术和电化学测试技术,研究了低合金钢P265GH和碳钢Q235在辽宁省红沿河地区大气暴露不同时间(最长时间为2年)的腐蚀行为.结果显示,这两种钢的腐蚀失重与实验时间的关系均符合幂函数ΔW=Atn规律,其n值处于0.5~1之间.SO2和Cl-的协同作用使钢的腐蚀加剧,钢表面形成的锈层保护性先随着暴露时间的延长而增强,在24个月后出现逆转现象,保护性降低.低合金钢P265GH的耐蚀性优于碳钢Q235.

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