2016第三届土木工程国际学术交流会议 (ICCE 2016)

70 / 2016-10-27 16:04:50

Research on Anti-Corrosion Performance of Hot-dip galvanized coating during Neutral salt spray test

Hot-dip galvanized,Neutral salt spray test,Anti-corrosion performance

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 microstructures of the coatings were analyzed by Zinc coating thickness loss test method and Differential Scanning Calorimetry (DSC). 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.