Mechanical Properties of Hot-Pressed TiB2-ZrO2 Composites |
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| Authors: | Tadahiko Watanahe Kazuhisa Shoubu |
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| Affiliation: | Government Industrial Research Institute, Kyushu Shuku Tosu, Saga 841, Japan |
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| Abstract: | The use of monoclinic ZrO2 as an additive improves the mechanical properties of TiB2-based composites without the use of stabilizers. In particular, TiB2-30% ZrO2 compacts exhibited a transverse rupture strength of 800 MN/m2, few pores, and a KI c of 5 MPa·m1/2. The high strength and toughness are thought to result mainly from the presence of partially stabilized tetragonal ZrO2 and from solid solution of (TiZr)B2 formed in sintering. |
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