Carbothermal production and characterisation of α-sialons

J.W.T. Rutten, van, R.A. Terpstra, R. Metselaar, J.C.T. Heijde, van der

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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 languageEnglish
Title of host publicationThird 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
EditorsP. Durán, J.F. Fernández
Place of PublicationCastellón de la Plana
PublisherFaenza Editrice Iberica
Pages73-78
ISBN (Print)84-87683-05-3
Publication statusPublished - 1993

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