Effects of wax-based anti-graffiti on copper patina composition and dissolution during four years of outdoor urban exposure
2010 (English)In: Journal of Cultural Heritage, ISSN 1296-2074, Vol. 11, no 3, 288-296 p.Article in journal (Refereed) Published
The protection against graffiti has become a serious problem in most cities. Unfortunately such form of vandalism does not save the cultural heritage. The use of anti-graffiti coatings is a common treatment that can also temporary protect the surface from degradation due to interactions with the environment. Aspects that have not yet been sufficiently investigated from a metal artefact perspective are whether the presence of the anti-graffiti coating will influence the patina composition and reduce the degree of patina dissolution. Long-term (four years) effects of wax-based anti-graffiti coatings on bare copper sheet and pre-patinated copper exposed to urban atmospheric conditions are presented and discussed in terms of changes in patina dissolution rates, barrier properties and composition. The investigation is based on a multi-analytical approach combining chemical analysis, analytical and electrochemical tools (stereomicroscopy, FTIR, XRD, SEM/EDS, AAS, EIS, colorimetric measurements). Results are believed to provide important information related to the long-term applicability of such coatings to preserve the Cultural Heritage.
Place, publisher, year, edition, pages
2010. Vol. 11, no 3, 288-296 p.
Anti-graffiti, Atmospheric corrosion, Patina, Copper, Metal release
IdentifiersURN: urn:nbn:se:kth:diva-46648DOI: 10.1016/j.culher.2010.02.001ISI: 000279867800006ScopusID: 2-s2.0-77954658247OAI: oai:DiVA.org:kth-46648DiVA: diva2:455715
QC 201111112011-11-112011-11-042012-03-20Bibliographically approved