Egyptian faience glazing by the cementation method part 2: cattle dung ash as a possible source of alkali flux

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• 作者：Mehran Matin ; Moujan Matin
• 关键词：Egyptian faience ; Donkey beads ; Cattle dung ; Qom technique ; Cementation glazing ; Alkali flux
• 刊名：Archaeological and Anthropological Sciences
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：8
• 期：1
• 页码：125-134
• 全文大小：2,108 KB
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• 作者单位：Mehran Matin (1)
  Moujan Matin (1)
  
  1. Research Laboratory of Shex Porcelain Co., 19th St., Kaveh Ind. Township, Saveh, 39141-76314, Iran
  
• 刊物主题：Earth Sciences, general; Archaeology; Chemistry/Food Science, general; Geography (general); Life Sciences, general; Anthropology;
• 出版者：Springer Berlin Heidelberg
• ISSN：1866-9565

文摘

Based on our current awareness, there are three distinct primary sources of alkali flux in the ancient Egyptian faience making: natron, soda rich plant ash and the so-called ‘mixed alkali fluxes’. Whereas the nature and origin of the first two types are identified to some extent, there are more questions regarding mixed alkali fluxes. In an attempt to provide further clarification on the latter source, a series of replication experiments on the production of Egyptian faience by the cementation glazing method were conducted using cattle dung ash as the source of alkali flux. After firing at 980 °C, the appearance of the faience objects, the microstructure and the chemical composition of selected samples obtained using scanning electron microscopy/energy-dispersive spectroscopy (SEM-EDS) were investigated. The discussion has primarily focused on cattle dung ash as the most, or one of the most, available sources of ash in ancient societies and its possible use as a source of alkali flux in the production of Egyptian faience, at least by the cementation glazing method.