Abstract:Ultrahigh temperature ceramics (UHTCs) such as diborides of zirconium, hafnium tantalum and their composites are considered to be the candidate materials for thermal protection systems of hypersonic vehicles due to their exceptional combination of physical, chemical and mechanical properties. A composite of ZrB 2 -TiB 2 is expected to have better properties. In this study, an attempt has been made to fabricate ZrB 2 -TiB 2 ceramics using mechanically activated elemental powders followed by reactive spark plasm… Show more
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