Non-invasive Raman identification of crystalline and glassy phases in a 1781 Sèvres Royal Factory soft paste porcelain plate
- Colomban, Philippe Sorbonne Université, Campus Pierre et Marie Curie, Paris, France
- Maggetti, Marino Department of Geosciences, Earth Sciences, University of Fribourg, Switzerland
- Albis, Antoine d’ Limoges, France
-
01.12.2018
Published in:
- Journal of the European Ceramic Society. - 2018, vol. 38, no. 15, p. 5228–5233
English
A Raman study of a Sèvres soft paste (frit) porcelain plate allowed the identification of both the crystalline and amorphous phases. Cristobalite and pseudowollastonite gave main Raman signatures in the body where also tridymite, amorphous alkali silicate glass and lead arsenate apatite were detected. Na0.4K0.1Ca0.5Pb4(AsO4)3 lacunar apatite is identified as opacifier in blue and green overglaze enamel. Pb-Sb-reach pyrochlore (Naples Yellow) pigment was found in yellow and green overglaze enamels. The orange hue is obtained by superposing a hematite bearing red paint stroke over the yellow. These results are compared to those previously obtained by detailed OM, SEM, XRD and XRF analyses. Some of the phases identified by XRD (quartz, tridymite) are hardly detected by Raman and vice versa cristobalite was not found by XRD, most probably due to its low amount.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Géosciences
- Language
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- English
- Classification
- Mineralogy
- License
- License undefined
- Identifiers
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- RERO DOC 323371
- DOI 10.1016/j.jeurceramsoc.2018.07.001
- Persistent URL
- https://folia.unifr.ch/unifr/documents/307439
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