镀锌层表面有机复合铬酸盐防腐膜
来源期刊：中国有色金属学报1999年第2期
论文作者：卢燕平 屈祖玉 任玉苓
文章页码：319 - 322
关键词：有机复合膜 铬化物 镀锌层 防腐
Key words：organic composite film ; chromic compound ; zinc plate ; corrosion resistance
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。
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.
