期刊
PLASMA PROCESSES AND POLYMERS
卷 20, 期 4, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.202200136
关键词
acetic acid corrosion; cold plasma; electrochemical impedance spectroscopy; lead corrosion; restoration
Despite numerous studies on the degradation of ductile metals in cultural heritage, there is still a lack of standardized restoration protocols. Traditional restoration methods such as chemical cleaning and electrochemical treatments often cause aggressive damage to the metal surface. In this research, a cold plasma design is proposed as a minimally invasive approach to restore ductile metals. The effectiveness of this technique was demonstrated through corrosion models created on lead samples and analyzed using various characterization techniques, including electrochemical impedance spectroscopy.
Despite the large number of studies devoted to understanding the degradation process of ductile metals in cultural heritage, there is still a lack of consolidated protocols for their restoration. Traditional restorations such as chemical cleaning and electrochemical treatments are carried out for the recovery of corroded ductile metals. However, these techniques are usually very aggressive to the metallic surface. For this reason, a cold plasma design is presented to restore ductile metals through the minimum intervention criterion. Lead samples were induced to atmospheric acetic acid corrosion to recreate models of degradation for practical restoration and characterization. The material after plasma treatment was analyzed with different techniques of characterization, including electrochemical impedance spectroscopy. The present work demonstrated the potential of this technique to provide an accurate analysis of its surface.
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