Thermal analysis as a method of characterizing ancient ceramic technologies

Moropoulou, A; Bakolas, A; Bisbikou, K

dc.contributor.author	Moropoulou, A	en
dc.contributor.author	Bakolas, A	en
dc.contributor.author	Bisbikou, K	en
dc.date.accessioned	2014-03-01T01:11:33Z
dc.date.available	2014-03-01T01:11:33Z
dc.date.issued	1995	en
dc.identifier.issn	0040-6031	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11697
dc.subject	CaO transformation	en
dc.subject	Ceramic micro-fabric	en
dc.subject	Ceramic technology	en
dc.subject	Discriminant factors	en
dc.subject	Extent of vitrification	en
dc.subject	Firing temperature	en
dc.subject	Raw clays	en
dc.subject.classification	Chemistry, Analytical	en
dc.subject.classification	Chemistry, Physical	en
dc.title	Thermal analysis as a method of characterizing ancient ceramic technologies	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0040-6031(95)02570-7	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0040-6031(95)02570-7	en
heal.language	English	en
heal.publicationDate	1995	en
heal.abstract	Ceramic materials represent manufacturing techniques which were improved consistently during the course of time, The components of ceramic materials are the ''fingerprint'' of the stable and/or metastable solid phases formed during the firing; the production processes of antique ceramics and pottery can be derived from their assemblage. There are many recognizable phases and their association depends, more than on their chemistry, upon the mineralogy of the raw materials, their grain-size distribution, maximum heating temperature, heating ratio, duration of firing and kiln redox atmosphere. All these factors help in understanding the ''course'' of reactions. Heating also affects the contact between the fine-sized clayey matrix and mineral clast fragments, appearing in reaction rims, sometimes showing newly-formed phases. The temperature at which ancient ceramics and pottery were fired varies over a wide range (600-1300 degrees C) depending on the type of clay used and the kiln available, although firing temperatures not above 300-400 degrees C have also been suggested. Clay minerals, as the main material for production of ceramics and pottery, show some characteristic reactions (dehydroxylation, decomposition, transformation) in the course of firing (heating effects) and several thermoanalytical criteria can be used for reconstruction of former production conditions. In the present work DTA, TGA and XRD results from byzantine and medieval ceramics are examined and information derived on ceramic technologies concerning raw materials and production conditions is validated by SEM observations concerning the extent of vitrification, as well as by the microstructural data provided by porosimetric measurements.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Thermochimica Acta	en
dc.identifier.doi	10.1016/0040-6031(95)02570-7	en
dc.identifier.isi	ISI:A1995TQ42700065	en
dc.identifier.volume	269-270	en
dc.identifier.issue	C	en
dc.identifier.spage	743	en
dc.identifier.epage	753	en