Atmospheric Corrosion of Copper Exposed in a Simulated Coastal-Industrial Atmosphere. Issue 6 (June 2017)

• Record Type: Journal Article
• Authors: Pan, Chen; Lv, Wangyan; Wang, Zhenyao; Su, Wei; Wang, Chuan; Liu, Shinian
• Is Part Of: Journal of materials science & technology. Volume 33:Issue 6(2017:Jun.)
• Page Start: 587
• Page End: 595
• Publication Date: 2017-06
• Subjects: Copper -- Atmospheric corrosion -- SEM -- EIS; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2016.03.024
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstract : 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 = At n . The main corrosion products are composed of Cu2 O, Cu2 Cl(OH)3 and Cu4 Cl2 (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 Cu4 Cl2 (OH)6 .