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Reactive hot pressing of ZrB2-ZrCx ultra-high temperature ceramic composites with the addition of SiC particulate

Rangaraj, Lingappa and Divakar, Canchi and Jayaram, Vikram (2010) Reactive hot pressing of ZrB2-ZrCx ultra-high temperature ceramic composites with the addition of SiC particulate. In: Journal of the European Ceramic Society, 30 (15). pp. 3263-3266.

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Official URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2010.05.0...

Abstract

Starting with non-stoichiometric Zr-B4C powder mixture ZrB2-ZrC matrix composites with SiC particulate addition have been made. It was found that variable amounts (5-25 vol%) of SiC could be incorporated and reactively hot pressed (RHPed) to relative densities of 97-99% at 1400-1500 degrees C. This technique has the potential to fabricate ZrB2-based matrices at low temperatures with a variety of reinforcements whose composition and volume fraction are not limited by stoichiometric considerations. The hardness of the composites is in the range of 17-22 GPa. (C) 2010 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Borides; Carbides; Zirconium; Hot pressing; Densification.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 18 Oct 2010 07:46
Last Modified: 18 Oct 2010 07:46
URI: http://eprints.iisc.ernet.in/id/eprint/33127

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