Abstract
In this paper, the effects of Mo2C and TaC additions on the microstructure and mechanical properties of Ti(C, N)-based cermets prepared through the powder metallurgical method were investigated by scanning electron microscopy, X-ray diffraction and mechanical properties tests. The results show that the microstructure of cermets with core/rim structure have a trend to become finer with increasing Mo2C and TaC content. The addition of Mo2C and TaC improve the mechanical properties of Ti(C, N)-based cermets. The cermets with 5wt% Mo2C and 5wt% TaC addition demonstrate excellent hardness and fracture toughness values (HRA: 91.4; KIC: 13.5MPam1/2).
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