Abstract
In this study, high pressure and high temperature sintering (HPHT) is adopted in the cermet fabrication process, and the microstructure and mechanical properties of cermets with TiC0.5N0.5–15WC–10Mo2C–5TaC–10Ni–10Co (wt%) sintered under 5GPa and different temperatures (900–1600°C) using 6×14MN cubic press are investigated. Results show that the densities of samples can reach up to 7.00g/cm3. Vickers hardness and fracture toughness of the products are over 1727HV30 and 7.2MPam1/2 respectively. In addition, the sintering results are compared with the data that obtained from commercial samples which produced via conventional sintering technique. The conclusion is that high density and high hardness cermets can be obtained through HPHT sintering.
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