期刊
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 27, 期 7, 页码 1861-1875出版社
SPRINGER
DOI: 10.1007/s10008-023-05490-1
关键词
Bronze; Corrosion protection; Patina; Phosphonic acid; Waterborne coating
This study investigates the possibility of using acrylic waterborne coatings to protect bronze cultural heritage. The protective properties of the coating are enhanced by pretreating the surface with long-chain phosphonic acid. The corrosion protection of the waterborne coating improves over time in all cases, and the pretreatment with phosphonic acid has the greatest impact on bare bronze substrate.
This work examines the possibility of acrylic waterborne coating application in the protection of bronze cultural heritage. In order to enhance the coating protective properties, the surface pretreatment with long-chain phosphonic acid is investigated. Studies are conducted on bronze, either bare or covered by two types of patina, by using polarization measurements and electrochemical impedance spectroscopy during 3 weeks of continuous immersion in simulated urban acid rain solution. The role of 12-aminododecylphosphonic acid as corrosion inhibitor and adhesion promoter is studied. The results obtained within this research show that the corrosion protection by the waterborne coating increases in time in all cases and it is enhanced by the phosphonic acid pretreatment. The greatest impact of studied pretreatment on the overall corrosion protection level is observed on bare bronze substrate.
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