Corrosion behavior of bronze under organic acid‐containing thin electrolyte layer. Issue 2 (26th August 2018)

• Record Type: Journal Article
• Authors: Chen, Cheng; Cai, Lankun; Wang, Xiong; Wang, Yitian; Zhang, Lehua; Zhou, Hao; Wu, Laiming; Yan, Ying
• Is Part Of: Materials and corrosion. Volume 70:Issue 2(2019)
• Page Start: 319
• Page End: 327
• Publication Date: 2018-08-26
• Subjects: bronze materials -- corrosion behavior -- organic acid -- thin electrolyte layer; Materials -- Periodicals; Metals -- Periodicals; Corrosion and anti-corrosives -- Periodicals; 620.1122305
• DOI: 10.1002/maco.201810413
• Languages: English
• ISSNs: 0947-5117

Abstract

Abstract : The corrosion process and mechanism of three kinds of bronze materials under organic acid‐containing thin electrolyte layer (TEL) are investigated by electrochemical impedance spectroscopy (EIS) and Tafel polarization curves. It can be seen from the results that the corrosion rate of three specimens under TELs is lower than that in bulk solution. For bare bronze, the corrosion rate increases with the thickness of TEL, while for Cu2 O patina bronze and CuCl patina bronze, there exists a critical thickness under TELs where the patina bronze have the maximum corrosion rate. In addition, the results show that Cu2 O patina could increase the corrosion resistance, while CuCl patina, as a harmful patina, can accelerate the corrosion process. The principal corrosion products identified on the surface of bare bronze and Cu2 O patina bronze are CuO, Cu(OH)2, and Cu(COOH)2, while the principal corrosion products identified on the surface of CuCl patina bronze is Cu2 Cl(OH)3 . Abstract : In order to further protect the bronze products, we investigated the corrosion process and behavior of bronze materials under organic acid‐containing thin electrolyte layer.