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: Journal 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
    Division/Department: Materials Science Division, Materials Science Division, Other
    Depositing User: Ms. Alphones Mary
    Date Deposited: 01 Mar 2012 14:17
    Last Modified: 01 Mar 2012 14:17
    URI: http://nal-ir.nal.res.in/id/eprint/10364

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