Corrosion resistance of steel with hot-dipped galvanized zinc and zinc alloy coatings in seawater

✍ Scribed by Y. Li; J. Liu; J. Zhang; S. Chu

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: German
• Weight: 64 KB
• Volume: 58
• Category: Article
• ISSN: 0947-5117
• DOI: 10.1002/maco.200604034

✦ Synopsis

Abstract

Hot‐dipped galvanized zinc and zinc alloy coatings were used as protective metallic coatings for steel structures in seawater in China. Corrosion of the two coatings immersed in sea water in Qingdao and Xiamen for 6 years were introduced and analyzed, which provides a basis for further development and applications of these coatings in China. Tests proved that the anti‐corrosion performance of the hot‐dipped low alloy zinc coatings (aluminum content less than or equal to 10 wt%) is equal to or even lower than that of the pure zinc sheet, while the performance of the hot‐dipped high alloy zinc coatings is higher than that of the pure zinc sheet. The hot‐dipped high alloy zinc coatings can be further developed for optimal performance in the future.