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Melt formation in lime-rich proto-porcelain glazes

Rehren, T; Yin, M; (2012) Melt formation in lime-rich proto-porcelain glazes. Journal of Archaeological Science , 39 (9) 2969 - 2983. 10.1016/j.jas.2012.04.050.

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Abstract

Early Chinese lime-rich glazes form an important step in the development of high-fired ceramics. This experimental study, based on the analysis of archaeological samples of proto-porcelain and replicated samples, explores the role of ash and glaze mixture preparation, firing temperature and duration, and cooling protocol for the quality and composition of the resulting glaze. It is demonstrated that the application of raw wood ash rich in potash produces low-potash glazes, that the melt formation follows a cotectic mechanism which needs extended firing times to reach equilibrium, and that the formation of a crystalline interaction layer depends more on the kiln cooling history and high-temperature soaking than on the glaze application method.

Type: Article
Title: Melt formation in lime-rich proto-porcelain glazes
DOI: 10.1016/j.jas.2012.04.050
Publisher version: http://dx.doi.org/10.1016/j.jas.2012.04.050
Language: English
Keywords: Lime glazes, Proto-porcelain, Eutectic melt formation, China, Ceramics
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Institute of Archaeology
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Institute of Archaeology > Institute of Archaeology Gordon Square
URI: https://discovery.ucl.ac.uk/id/eprint/1361680
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