Atmospheric Corrosion of Copper Exposed in a Simulated Coastal-Industrial Atmosphere

• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2017,（6）
• 页码范围: 587-595
• 页数: 9页
• 语种: 英文

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.