Abstract
(Ti,M)(C,N)-Based Cermets were synthesized from (Ti,M)(C,N)-Ni-Co composite powders by vacuum sintering. The material phase evolution, microstructure and densification behavior were investigated under different sintering temperature from 800 °C to 1400 °C. Results showed that deoxidation occurred and solid phase diffusion observed below 1200 °C. The solid phase liquidization appeared from 1200 °C to 1350 °C, resulting in decrease of pores in the material. Above 1350 °C, the liquid phase fully melted to fill the pores of material, and the cermets approach densification lead to the maximum value of its transverse rupture strength and hardness. (Ti,M)(C,N)-based cermets prepared by vacuum sintering have a hard phase of “weak core/rim structure".
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