Atmospheric Corrosion of Copper Exposed in a Simulated Coastal-Industrial Atmosphere
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2017年第6期
论文作者：Chen Pan Wangyan Lv Zhenyao Wang Wei Su Chuan Wang Shinian Liu
文章页码：587 - 595
摘 要：The corrosion behavior of copper exposed in a simulated coastal-industrial atmosphere has been investigated using weight loss measurement, scanning electron microscopy, X-ray diffraction, potentiodynamic polarization and in-situ electrochemical impedance spectroscopy（EIS） with micro-distance electrodes.The results show that corrosion kinetics follows the empirical equation D = Atn. The main corrosion products are composed of Cu2O, Cu2Cl（OH）3 and Cu4Cl2（OH）6. A two-layer structure comprising a loose outer layer and a compact inner layer forms the corrosion products during corrosion process. SO2 has been found to promote the formation of Cu4Cl2（OH）6.
Chen Pan1，Wangyan Lv2，Zhenyao Wang1，Wei Su2，Chuan Wang1，Shinian Liu2
1. Environmental Corrosion Center, Institute of Metal Research, Chinese Academy of Sciences2. Electric Power Research Institute, Guangdong Power Grid Corporation
摘 要：The corrosion behavior of copper exposed in a simulated coastal-industrial atmosphere has been investigated using weight loss measurement, scanning electron microscopy, X-ray diffraction, potentiodynamic polarization and in-situ electrochemical impedance spectroscopy（EIS） with micro-distance electrodes.The results show that corrosion kinetics follows the empirical equation D = Atn. The main corrosion products are composed of Cu2O, Cu2Cl（OH）3 and Cu4Cl2（OH）6. A two-layer structure comprising a loose outer layer and a compact inner layer forms the corrosion products during corrosion process. SO2 has been found to promote the formation of Cu4Cl2（OH）6.
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