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

Rangaraj, L and Divakar, C and Jayaram, V (2010) Reactive hot pressing of ZrB2–ZrCx ultra-high temperature ceramic composites with the addition of SiC particulate. Journal of the European Ceramic Society, 30. pp. 3263-3266. ISSN 0955-2219

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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 ◦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.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s. Elsevier Science Ltd.,
Uncontrolled Keywords:	Borides;Carbides;Zirconium;Hot pressing;Densification
Subjects:	CHEMISTRY AND MATERIALS > Chemistry and Materials (General) CHEMISTRY AND MATERIALS > Composite Materials
Depositing User:	Ms. Alphones Mary
Date Deposited:	01 Mar 2012 08:47
Last Modified:	01 Mar 2012 08:47
URI:	http://nal-ir.nal.res.in/id/eprint/10364

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