Degradation Mechanism of Lacquered Tinplate in Energy Drink by in-situ EIS and EN
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2013年第2期
论文作者：周超 WANG Jihui SONG Shizhe 夏大海 WANG Ke SHEN Chen LUO Bing SHI Jiangbo
文章页码：367 - 372
摘 要：The corrosion process of phenolic epoxy coated tinplate in energy drink was investigated by in-situ electrochemical impedance spectroscopy（EIS） and electrochemical noise（EN） techniques. The experimental results indicate that the degradation process of novolac epoxy coated tinplate in energy drink can be divided into three main stages: organic coating wetted by the beverage; corrosion initiation beneath the organic coating; and corrosion extension process. It was proposed that the tin coating and carbon steel were mainly corroded by organic acids in energy drink through the pores of the organic coating. After the tin coating was corroded, the carbon steel started to corrode due to its higher electrochemical activity and became to be the dominated corrosion reaction.
周超1，WANG Jihui1，SONG Shizhe1，夏大海2，WANG Ke1，SHEN Chen2，LUO Bing3，SHI Jiangbo1
1. School of Materials Science and Engineering, Tianjin University2. Department of Chemical and Materials Engineering, University of Alberta3. 94277 Unit of the PLA
摘 要：The corrosion process of phenolic epoxy coated tinplate in energy drink was investigated by in-situ electrochemical impedance spectroscopy（EIS） and electrochemical noise（EN） techniques. The experimental results indicate that the degradation process of novolac epoxy coated tinplate in energy drink can be divided into three main stages: organic coating wetted by the beverage; corrosion initiation beneath the organic coating; and corrosion extension process. It was proposed that the tin coating and carbon steel were mainly corroded by organic acids in energy drink through the pores of the organic coating. After the tin coating was corroded, the carbon steel started to corrode due to its higher electrochemical activity and became to be the dominated corrosion reaction.
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