Research on Anti-Corrosion Performance of Hot-dip Galvanized Coating during Neutral Salt Spray Test

Abstract

Two customized hot-dip galvanized test specimens were applied onto the steel substrates, then the specimens were tested 5000h during the neutral salt spray and there were obvious differences in the anti-corrosion performance between the coatings. The results showed that there was no significant difference of the corrosion products and corrosion mechanisms between two coatings. Nevertheless, the Hot-dip customized production process, the density of the corrosion products in coating were the primary factors influencing the anti-corrosion performance of the Hot-dip galvanized coating.