(北京科技大学表面科学与腐蚀工程系，北京 100083
宝山钢铁公司，上海 201900)
摘 要: 研究了一种有机复合铬酸盐膜(KD-PC)，其耐蚀性优于国产有机复合膜(BG-UF)。这种新的复合膜是以电镀锌钢板为基板，由内外两层构成，内层为CrO3-H3PO4-SiO2系钝化膜，外层为含CrⅣ，CrⅢ和 SiO2的有机树脂涂膜。该复合膜不仅能有效地阻挡H2O，O2和Cl-对镀锌层的腐蚀 ，而且还能起到良好的缓冲作用。
关键字: 有机复合膜 铬化物 镀锌层 防腐
（University of Science and Technology Beijing, Beijing 100083, P . R. China
1 Baoshan Iron and Steel Corporation, Shanghai 201900, P. R. China ）
Abstract:An organic-chromate composite coated electrogalva nized steel sheet(KD-PC) was studied, whose corrosion resistance is higher than organic-silicate composite coated electrogalvanized steel sheet produced in BAO GANG of China. This new type of KD-PC coating consisted of two layers: the inner layer was a passive film formed from CrO3-H3PO4-SiO2 systems, and the outer layer was an organic resin coat containing CrⅥ, CrⅢ and SiO2. The result of corrosion test showed that KD-PC film acts as a barrier to control H2O and Cl- attack and has good inhibiting by compound formation.
Key words: organic composite film chromic compound zinc plate corrosion resistance
