Effects of Metallic Coatings and Zinc Rich Primers on the Performance of Finishing Systems for Automotive Steel

摘要

The effect of metallic coatings and zinc rich primers on the performance of finishing systems for automotive steel was investigated. Galvanized and aluminized type steels and zinc rich primer steels were coated with specification finishing systems and exposed to tropical and temperate environments. Data showed the hot dip galvanized steel properly finished will offer the most effective corrosion resistant system for severe environments such as salt atmosphere and sea coast exposure. This is followed in descending order by aluminized steel, zinc rich primer on cold rolled steel, electrolytic zinc and cold rolled steel. Differences between the metallic coated steels is much less pronounced under less severe exposure. (Author)