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Raman analysis of glaze on various archaeological shard samples and intact Ming plates
Author(s) -
Kock L. D.
Publication year - 2013
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.4139
Subject(s) - glaze , tile , raman spectroscopy , ceramic glaze , mineralogy , ceramic , materials science , archaeology , composite material , chemistry , optics , physics , history
Raman microscopy is used in the analysis of glaze on a number of samples that include blue and white ceramic shards, a tile from the Citadel of Algiers and intact Ming plates. The use of the glaze depth profiling method for the study of interfacial pigments on these samples [J. Raman Spectrosc. 2007; 38: 1480] prompted the study of the glaze on the same set of samples to determine glaze type dependence of this method. Using the index of polymerization ( I p ) which is closely correlated with glaze composition and processing temperature, it is shown that processing temperature could be estimated from a low of about 600 °C for some of the unknown archaeological shards to about 1000 °C or above for the Ming porcelain shards. Two intact porcelain plates from the Hongzhi (1488 – 1505) and Wanli (1573 – 1620) Ming imperial periods from the J. A. van Tilburg Museum of the University of Pretoria have been studied, and glaze/glass transition temperature was estimated to be above 1000 °C, consistent with historical data. A SnO 2 ‐based glaze tile shard from the Citadel of Algiers was also successfully probed, and results indicated a much lower sintering temperature. Copyright © 2012 John Wiley & Sons, Ltd.