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Characterisation of a centuries-old patinated copper roof tile from Queen Anne's Summer Palace in Prague

AutorMorcillo, Manuel; Chang, T.; Chico, Belén; Fuente, Daniel de la; Odnevall Wallinder, I.; Jiménez, José Antonio; Leygraf, C.
Palabras claveAtmospheric corrosion
Copper tile
Patina
Queen Anne's Summer Palace
Characterisation
Fecha de publicación2017
EditorElsevier
CitaciónMaterials Characterization 133: 146-155 (2017)
ResumenThis 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 (PbSbO); (b) the patina is formed by an inner sublayer of cuprite (CuO) and an outer sublayer of brochantite [CuSO(OH)] and antlerite [CuSO(OH)] and traces of azurite [Cu(CO)(OH)]; and (c) the brochantite/antlerite crystals are randomly doped with Fe and C.
URIhttp://hdl.handle.net/10261/157417
DOI10.1016/j.matchar.2017.09.034
Identificadoresdoi: 10.1016/j.matchar.2017.09.034
issn: 1044-5803
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