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Effects of wax-based anti-graffiti on copper patina composition and dissolution during four years of outdoor urban exposure
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface and Corrosion Science.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface and Corrosion Science.ORCID iD: 0000-0003-2206-0082
2010 (English)In: Journal of Cultural Heritage, ISSN 1296-2074, E-ISSN 1778-3674, Vol. 11, no 3, 288-296 p.Article in journal (Refereed) Published
Abstract [en]

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.
Keyword [en]
Anti-graffiti, Atmospheric corrosion, Patina, Copper, Metal release
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-46648DOI: 10.1016/j.culher.2010.02.001ISI: 000279867800006Scopus ID: 2-s2.0-77954658247OAI: oai:DiVA.org:kth-46648DiVA: diva2:455715
Note
QC 20111111Available from: 2011-11-11 Created: 2011-11-04 Last updated: 2017-12-08Bibliographically approved

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Odnevall Wallinder, Inger

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