Electrochemical corrosion behavior of bronze materials in an acid‐containing simulated atmospheric environment. Issue 3 (13th October 2019)

• Record Type: Journal Article
• Authors: Cai, Lankun; Chen, Mengjie; Wang, Ying; Chen, Cheng; Zhang, Lehua; Zhou, Hao; Wu, Laiming; Yan, Ying
• Is Part Of: Materials and corrosion. Volume 71:Issue 3(2020)
• Page Start: 464
• Page End: 473
• Publication Date: 2019-10-13
• Subjects: acetic acid -- bronze -- corrosion -- formic acid -- thin electrolyte layers; Materials -- Periodicals; Metals -- Periodicals; Corrosion and anti-corrosives -- Periodicals; 620.1122305
• DOI: 10.1002/maco.201911196
• Languages: English
• ISSNs: 0947-5117

Abstract

Abstract: The present work investigates the corrosion behavior of bronze materials under thin electrolyte layers (TELs) in a simulated atmospheric environment containing formic and acetic acid by electrochemical measurements as well as surface characterization. The results show that the corrosion of bronze under TEL is significantly faster than that in the bulk solution, and the corrosion rate of bronze is the highest when the thickness of TEL is about 100 μm. Formic acid is observed to be more corrosive than acetic acid. Copper formate and copper acetate hydrate appear in the corrosion products formed on the surface of bronze, suggesting that the organic acid participates in the corrosion process of bronze materials in the simulated atmospheric environment. Abstract : In a simulated solution of the atmospheric environment, both formic acid and acetic acid can corrode bronze material, which is positively correlated with the concentration of the organic acid. The study found that there may be a critical thickness of 100 μm, where the corrosion rate is the highest.