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A novel microwave route for the preparation of ZrC-SiC composites

Das, Bharat P and Panneerselvam, M and Rao, KJ (2003) A novel microwave route for the preparation of ZrC-SiC composites. In: Journal of Solid State Chemistry, 173 (1). pp. 196-202.

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Abstract

A novel microwave-assisted carbothermal reduction and carburization route has been used to prepare ZrC–SiC composite powders. Both zircon and mixtures of $ZrO_2$ and $SiO_2$ were used as starting materials along with amorphous carbon. Carbothermal reduction and carburization were examined in both argon and nitrogen atmospheres. Reaction kinetics in microwave field was found to exhibit notable differences for the two different starting materials. However, a complete oxide to carbide conversion was achieved in less than 30 min in both cases when argon was used as an ambient gas. The possible structural mechanism involved in the reactions has been discussed.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Ceramics;Carbides;Composites;X-ray diffraction
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 01 Jun 2006
Last Modified: 19 Sep 2010 04:28
URI: http://eprints.iisc.ernet.in/id/eprint/7282

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