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Títol:
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The use of micro-XRD for the study of glaze color decorations
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Autor/a:
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Pradell, Trinitat; Molina, Gloria; Molera Marimon, Judit; Labrador, A.; Pla, Joaquim
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Altres autors:
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Universitat de Vic. Escola Politècnica Superior; Universitat de Vic. Grup de Recerca en Tecnologies Digitals |
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Notes:
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The compounds responsible for the colours and decorations in glass and glazed ceramics include:
colouring agents (transition metal ions), pigments (micro-and nano-precipitates of compounds
that either do not dissolve or recrystallize in the glassy matrix) and opacifiers (microcrystalline
compounds with high light scattering capability). Their composition, structure and range of
stability are highly dependent not only on the composition but also on the procedures followed to
obtain them. Chemical composition of the colorants and crystallites may be obtained by means of
SEM-EDX and WDX. Synchrotron Radiation micro-X-ray Diffraction has a small beam size
adequate (10 to 50 microns footprint size) to obtain the structural information of crystalline
compounds and high brilliance, optimal for determining the crystallites even when present in low
amounts. In addition, in glass decorations the crystallites often appear forming thin layers (from
10 to 100 micrometers thick) and they show a depth dependent composition and crystal structure.
Their nature and distribution across the glass/glazes decorations gives direct information on the
technology of production and stability and may be related to the color and appearance.
A selection of glass and glaze coloring agents and decorations are studied by means of SR-micro-
XRD and SEM-EDX including: manganese brown, antimony yellow, red copper lusters and cobalt
blue. The selection includes Medieval (Islamic, and Hispano Moresque) and renaissance tin
glazed ceramics from the 10th to the 17th century AD. |
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Matèries:
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-Ceràmica
-Arqueologia |
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Drets:
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Tots els drets reservats
(C) Springer (The original publication is available at www.springerlink.com)
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Tipus de document:
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Article
info:eu-repo/acceptedVersion |
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Publicat per:
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Springer
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Compartir:
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