Corrosion kinetics and patina evolution of galvanized steel in a simulated coastal-industrial atmosphere

作     者：Chuang Qiao Lianfeng Shen Long Hao Xin Mu Junhua Dong Wei Ke Jing Liu Bo Liu 

作者机构：College of ForestryHenan Agricultural UniversityZhengzhou450002China Environmental Corrosion Centre of MaterialsInstitute of Metal ResearchChinese Academy of SciencesShenyang110016China Electric Power Test and Research InstituteGuangzhou Power Supply Co.Ltd.(GZPS)Guangzhou510410China School of MetallurgyNortheastern UniversityShenyang110819China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2019年第35卷第10期

页      面：2345-2356页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Fundation of China (Nos. 51501204 and 51671200) the Research Program of Corrosion Distribution and Anti-corrosion Measures of Power Transmission in Complex Atmospheric Environment of Large Coastal Cities (No. GZM2014-2-0004) the Science and Technology Department of Henan Province (No. 172102310726) 

主　　题：Zinc Galvanized steel EIS Atmospheric corrosion Patina layer 

摘      要：The corrosion kinetics and patina(corrosion products) layer evolution of galvanized steel submitted to wet/dry cyclic corrosion test in a simulated coastal-industrial atmosphere was investigated. The results show that zinc coating has a greater corrosion rate during the initial period and a lower corrosion rate during the subsequent period, and the patina composition and structure can greatly affect the corrosion kinetics evolution of zinc coating. Moreover, Zn5(OH)6(CO3)2 and Zn4(OH)6 SO4 are identified as the main stable composition and exhibit an increasing relative amount;while Zn12(OH)15Cl3(SO4)3 cannot stably exist and diminish in the patina layer as the corrosion develops.