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Chemical and mineralogical characterization of ancient Portuguese ceramic tiles of the first quarter of the XVIIIth century
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Orientador(es)
Resumo(s)
The main objective of the present work is to establish a correlation between the
characteristics of the ceramic body of ancient tiles and the workshop where they were
made. The work was carried out with tiles from the Museu Nacional do Azulejo
collection, but the aim is to study the most important period of the history of tiles in
Portugal, the first quarter of the 18th century, the so called Ciclo dos Mestres (Master’s
Cycle). In the present work, we make use of SEM-EDS and DRX to determine the
major constituents of the ceramic body, as well as to evaluate the procedure used to
produce the tiles. Signed and unsigned tiles were used.
The analysis of the chemical composition, mineralogical phases, shape and size of
particles combined with historical information allowed to conclude that the tiles of the
panel Vista de Lisboa (MNAz inv. 1) and Senhora dos Corações have identical global
chemical composition but not the same mineralogical characteristics. Two other tiles
featuring King Charles II (MNAz inv. 691) and his wife Queen Catherine of Braganza
(MNAz inv. 690), present different properties, which indicate another provenience of
the clay materials and, probably, another workshop and painter.
Descrição
Seminário Internacional de Conservação de Azulejos – Conservation of Glazed Ceramic Tiles – organizado pelo LNEC e realizado em Lisboa de 15-16 de abril de 2009.
Palavras-chave
Azulejo Arqueometria Historical tiles X-ray diffraction Scanning electron microscopy-energy Dispersive X-ray spectrometer