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Characterisation of a centuries-old patinated copper roof tile from Queen Anne's Summer Palace in Prague
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface and Corrosion Science.
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2017 (English)In: Materials Characterization, ISSN 1044-5803, E-ISSN 1873-4189, Vol. 133, 146-155 p.Article in journal (Refereed) Published
Abstract [en]

This paper presents an in-depth characterisation study of the patina formed on a copper tile taken from the roof of Queen Anne's Summer Palace in Prague after > 300 years of exposure to the action of the atmosphere. A wide variety of techniques have been used, including metallographic and chemical analysis (electrogravimetry, AAS, XRF) of the copper matrix, and spectroscopic and microscopic investigations (GIXRD, FTIR, TEM/EDS and SEM/ EDS) to determine the composition and structure of the patina. The major conclusions of the study are: (a) the base copper contains abundant inclusions mainly of rosiaite (PbSb2O6); (b) the patina is formed by an inner sublayer of cuprite (Cu2O) and an outer sublayer of brochantite [Cu4SO4(OH)(6)] and antlerite [Cu3SO4(OH)(4)] and traces of azurite [Cu-3(CO3)(2)(OH)(2)]; and (c) the brochantite/antlerite crystals are randomly doped with Fe and C.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE INC , 2017. Vol. 133, 146-155 p.
Keyword [en]
Copper tile, Atmospheric corrosion, Characterisation, Patina, Queen Anne's Summer Palace
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-217414DOI: 10.1016/j.matchar.2017.09.034ISI: 000413881500018Scopus ID: 2-s2.0-85030706571OAI: oai:DiVA.org:kth-217414DiVA: diva2:1158818
Note

QC 20171121

Available from: 2017-11-21 Created: 2017-11-21 Last updated: 2017-11-21Bibliographically approved

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Chang, TingruOdnevall Wallinder, IngerLeygraf, Christopher

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