Electrochemical Characterization of Bronze Exposed to Outdoor Atmosphere

Chemical and Biochemical Engineering Quarterly

卷:35

L. Bera¹  H. Otmačić Ćurković¹  M. Marcelja¹  D. Mikić¹  E. Kovačević¹ 

[1] Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia;

关键词: patina;    copper alloy;    atmospheric corrosion;    electrochemical methods;    atr-ftir;   

DOI  :  10.15255/CABEQ.2021.1926

来源: DOAJ

【 摘 要 】

The aim of this work was to examine corrosion behaviour of bare and artificial patinated bronzes during exposure to urban outdoor atmosphere. Studies were conducted on copper and two different bronzes in order to evaluate the influence of substrate composition on patina composition and electrochemical behaviour. Additionally, two differentpatination methods were compared. Corrosion behaviour was examined using electrochemical impedance spectroscopy with gel-electrolyte electrochemical cell. The composition of patina was determined by ATR-FTIR spectroscopy. The obtained results showed that all studied artificial patinas initially decrease the corrosion resistance of copper and bronzes but in time their corrosion resistance improves, and even for certain combinations, artificial patina-bronze corrosion resistance is higher than that of naturally patinated bronze.

【 授权许可】

Unknown