Abstract
The carbothermal reduction of kaolin is a well known method to prepare ß-sialon from
inexpensive starting materials. So far however, hardly any attention has been paid to
carbothermai production of a-sialons. In this study kaolin, diatomite powder. SiO2, Al2O3.
several Ca-sources and carbon black were used. These materials were mixed, slip cast or
pressed and heated in nitrogen at 1350 -1450°C. Next the samples were annealed at 1550, 1625 and 1700°C to form a single phase Ca-a-sialon material. In this way up till 90 % purity was reached.
Original language | English |
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Title of host publication | Third EURO-Ceramics : vol. 1 : Proceedings of ceramics : Proceedings of the third European Ceramic Society Conference (THIRD ECerS), held on 12-17 September 1993 at the Madrid Congress & Exhibition Centre, Spain |
Editors | P. Durán, J.F. Fernández |
Place of Publication | Castellón de la Plana |
Publisher | Faenza Editrice Iberica |
Pages | 73-78 |
ISBN (Print) | 84-87683-05-3 |
Publication status | Published - 1993 |