添加Co及Bi元素对汽车镀锌件耐蚀性的影响

The affect on Erosion Resistance of the Automobile galvanized Parts with the Additions of Co and Bi

通过在镀液中添加Co、Bi元素,对汽车用镀锌板的表面状态进行了分析,并采用K2SO4溶液全浸和KCl盐雾试验研究镀层的耐蚀性。结果表明:添加Co、Bi元素能提高镀层外观质量,同时还使镀层耐蚀性大幅度提高。

Analyzed the surface state of the automobile galvanized parts by adding Co and Bi in the galva- nized solution, and studied the erosion resistance of the hot -galvanized film using K2SO4 immersion and KCI salt spray test. The results indicate that the film qualities and the erosion resistance of the film are increased with the additions of Co and Bi.