Data di Pubblicazione:
1998
Abstract:
Microtextural and microchemical data on sherds, experimentally fired at different temperatures, reveal the presence of nonhomogeneous compositions of firing phases, even over a distance of 10±30 mm. These results were obtained with an analytical strategy combining bulk and `in situ' (spot) analyses. Such microtextures, formed by sub-solidus reactions, occur in limited domains of the system, testify for a short-range diffusion of chemical components during the firing process, even if 1050°C
were reached in the kiln. Relationships among phases formed during the firing process indicate that their composition is
independent of kiln temperatures and is related to the composition of precursor phases on which they grow. The use of data
obtained by X-ray diffraction techniques on bulk samples, when used to define firing temperatures of historical artifacts, could
be considered.
Thermal analysis shows the different steps of the process in terms of fluid-releasing reactions and indicates some constraints
to the development of the reaction.
were reached in the kiln. Relationships among phases formed during the firing process indicate that their composition is
independent of kiln temperatures and is related to the composition of precursor phases on which they grow. The use of data
obtained by X-ray diffraction techniques on bulk samples, when used to define firing temperatures of historical artifacts, could
be considered.
Thermal analysis shows the different steps of the process in terms of fluid-releasing reactions and indicates some constraints
to the development of the reaction.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
FIRING; MICROPROBE ANALYSIS; MINERAL REACTIONS; NATURAL CLAY; THERMOGRAVIMETRIC ANALYSIS
Elenco autori:
Duminuco, Paolo; Messiga, Bruno; Riccardi, MARIA PIA
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