ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 42, (4) 151 - 159 (1998)


STUDY OF SINTERING OF CERAMICS BY MEANS OF HIGH-TEMPERATURE DILATOMETRY
 
Maca Karel, Hadraba Hynek, Cihlář Jaroslav
 
Department of Ceramics, Technical Universiry of Brno, Technická 2, 616 69 Brno

The kinetics of sintering of ceramic materials based on alumina, zirconia and of their composites was studied by means of the high-temperature dilatometer. It was found that the alumina-based ceramics sintered at higher temperatures than those based on zirconia, that at a heating rate of 10 °C/min the resultant theoretical densities were comparable to those obtained at rates of 5 or 2 °C/min, and that the resultant relative densities were higher with materials prepared by cold isostatic pressing than with those prepared by injection moulding. With the alumina and zirconia-based materials, the values of linear thermal expansion coefficients were identical with those specified in the literature.


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