Galvalume镀层钢在青岛海域海水中的耐蚀性能  

Corrosion Resistance of Galvalume Coated Steel in Qingdao Seawater

作　　者：刘栓[1,2] 孙虎元[1] 孙立娟[1] 张宁[1] 陈建敏 

机构地区：[1]中国科学院海洋研究所海洋环境腐蚀与生物污损重点实验室,山东青岛266071 [2]中国科学院宁波材料技术与工程研究所海洋新材料与应用技术重点实验室,浙江宁波315201

出　　处：《材料工程》2015年第3期42-47,共6页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(41076046)

摘　　要：采用极化曲线测试和交流阻抗技术研究了Galvalume镀层钢在青岛海域海水中的耐蚀性能,利用电子扫描电镜对镀层表面的腐蚀产物形貌进行了分析,详细探讨了海水温度和溶解氧浓度对Galvalume镀层钢电化学腐蚀行为的影响。结果表明:温度升高,破坏了保护性腐蚀产物膜在镀层表面的吸附,促进了阳极活化反应过程。低浓度的溶解氧抑制了阴极反应,镀层的耐蚀性能提高。The corrosion resistance of Galvalume coated steel in Qingdao seawater was investigated by polarization curves and EIS methods. The morphology of corrosion products absorbed on the coating was analyzed by scanning electron microscopy （SEM）, the effects of temperature and dissolved 02 concentration on electrochemical corrosion behavior of Galvalume coated steel were studied in details. The results show that the protective corrosion product film absorbed on the coating is damaged and the anodic reaction is activated with the increase of temperature. The cathodic reaction is inhibited un- der low concentration of dissolved 02 and the corrosion resistance of the galvalume coating is im- proved.

关 键 词：Galvalume镀层钢 耐蚀性能 海水 温度 溶解氧 

分 类 号：TG171[金属学及工艺—金属表面处理]