14 documents found, page 1 of 2
Decoding Portuguese Azulejos: the intersection of art, history, and science [Re...
Veiga, JP; Coutinho, ML; Coentro, S.; Silva, TeresaABSTRACT: In recent decades, the production techniques of azulejos (Portuguese glazed tiles with predominantly blue color) remain a subject of ongoing research. Combining historical research with advanced analytical techniques, this communication aims to show that pigments and materials that define the azulejo colour palette, along with their production recipes and the chemical and structural composition of the...
Decoding Portuguese Azulejos: the intersection of art, history, and science [Re...
Veiga, JP; Coutinho, ML; Coentro, S.; Silva, TeresaABSTRACT: In recent decades, the production techniques of azulejos (Portuguese glazed tiles with predominantly blue color) remain a subject of ongoing research. Combining historical research with advanced analytical techniques, this communication aims to show that pigments and materials that define the azulejo colour palette, along with their production recipes and the chemical and structural composition of the...
White on blue: A study on underglaze-decorated ceramic tiles from 15th-16th-cen...
Coentro, S.; Alves, L.C.; Coll Conesa, J.; Ferreira, T.; Mirão, J.; Silva, R.C.; Trindade, R.; Muralha, V.S.F.This study characterises and compares tin-opacified underglaze-decorated tiles from Valencian and Sevillian provenances. This technique, where the cobalt and manganese pigments are applied below an opaque white glaze, was used in the Iberian Peninsula between the 14th and early 16th centuries. The chemical and morphological characterisation of the glazes was performed by Optical Microscopy (OM), Scanning Electr...
Glaze Technology in Hispano-Moresque Ceramic Tiles: A Comparison Between Portug...
Coentro, S.; Alves, L.C.; Relvas, C.; Ferreira, T.; Mirão, J.; Molera, J.; Pradell, T.; da Silva, R.C.; Muralha, V.S.F.For the first time, Hispano-Moresque glazed tiles from Portuguese and Spanish collections were studied together and compared. This work is included in a wider study tackling the technology of Hispano-Moresque tile production from several collections in the Iberian Peninsula. While showing many similarities, differences were identified between collections, regarding both chemical and morphological characteristic...
Multi-analytical identification of pigments and pigment mixtures used in 17th c...
Coentro, S.; Mimoso, J.; Lima, A.; Santos Silva, A.; Pais, A.; Muralha, S.A multi-analytical approach was used to study the pictorial layers of a set of 17th century historic glazed tiles (azulejos) of Portuguese manufacture. The pictorial layer was studied by μ-EDXRF, μ-Raman, SEM-EDS and OM. Although the established palette comprises few pigments, it was found that the tiles were enhanced by the use of pigment mixtures, which were identified by μ-Raman and μ-EDXRF. As expected, the...
Physical-chemical characterization of historical Portuguese tiles
Morais Pereira, S.; Coentro, S.; Santos Silva, A.; Muralha, S.; Mimoso, J.A group of Portuguese tiles from the 17th century with manufacturing defects and several forms of decay were characterized as to chemical and mineralogical composition and physical properties of the glaze and ceramic body. The study included multi-analytical techniques: X-ray fluorescence (XRF), X-ray diffraction (XRD) and thermogravimetric and differential thermal analysis. The porous structure of the tiles an...
The colors and techniques of 17th century Portuguese azulejos: a multi-analytic...
Coentro, S.; Muralha, S.; Lima, A.; Santos Silva, A.; Pais, A.; Mimoso, J.Azulejos (ceramic glazed tiles) are the most important form of classical decorative art in Portugal. They have been decorating interior and exterior walls of public and private buildings such as churches, palaces, and even gardens for over 400 years. In the 17th century, Portuguese azulejo manufacture was already well established and widespread. The tiles were produced by the majolica technique and had a relati...
The yellow pigment in Portuguese 17th century azulejos
Coentro, S.; Mimoso, J.; Muralha, S.; Lima, A.; Santos Silva, A.; Pais, A.The Naples Yellow pigment (lead antimonite) and its variants ((Pb-Sb-Sn and/or Pb-Sb-Zn triple oxides) have been the subject of several studies in the last decade [1-3]. This study focuses on the chemical characterization of the yellow pigment used by Portuguese historic glazed tile makers in the 17th century, using non-destructive techniques. Special attention was given to understanding of the production techn...
Estudo da camada pictórica na azulejaria portuguesa do século XVII
Coentro, S.Estudou-se um conjunto de fragmentos de azulejos datados do século XVII, de produção portuguesa, cedido pelo Museu Nacional do Azulejo. O objectivo foi caracterizar morfológica e quimicamente a camada pictórica da azulejaria portuguesa do século XVII. O estudo utilizou uma abordagem multi-analítica, incluindo a espectrometria de fluorescência de raios X dispersiva de energias (µ-EDXRF), espectroscopia de Raman,...
Multi-analytical study of the pigments in 17th Century Portuguese Azulejos
Coentro, S.; Mimoso, J.; Muralha, S.; Lima, A.; Santos Silva, A.; Pais, A.Historic glazed tiles (azulejos) are an important part of the cultural heritage of Portugal. 17th century Portuguese azulejos were manufactured by the majolica process, in which the colours were applied over a white tin-glaze. The distribution of colours in the glaze depends on the pigment used. Lead-yellow and all colours obtained from it, such as lemon yellow, fern-green and orange remain mainly at the surfac...