用阴极极化法从钼酸盐和磷酸盐的混合溶液中获得了锌表面彩色转化膜。此膜具有良好的防腐蚀和装饰效果。盐雾试验结果表明,金黄色膜耐蚀性最佳。XPS和AES分析结果表明,该膜层厚度约为75nm;膜表面钼以Mo(VI)状态存在,而在膜内则以Mo(VI)和Mo(IV)共存。从AES深度分布曲线的组成恒定区求得各组成元素的相对原子百分浓度(A.C.%)为:O 56.9%;Mo 26.8％;P 11.0％;Zn 5.3％。
Colourful conversion films were formed on zinc surface with cathodic polarization method from a molybdate-phosphate type aqueous solution. It was found from the results of salt spray corrosion tests that the golden film exhibited excellent anticrrosive performance. The results of XPS and AES analyses showed that the thickness of the golden film was about 75nm and Mo existed as Mo(VI) in the outer layer of the film. The relative atomic percent contents (A.C.%) of the golden film calculated at the constant elemental composition section on the AES profile curves were O 56.9%; Mo 26.8%; P 11.0%; Zn 5.3%.
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