The preparation of Ti(C, N)-based cermets using (Ti, Me)(C, N) solid-solution powder instead of the traditional Ti(C, N)+MeC mixtures has gradually become a popular research subject. By using a (Ti, Nb)(C, N) solid-solution powder and Ti(C, N)+NbC powder, the microstructures and mechanical properties of Ti(C, N)-based cermets were investigated in the present work with the guidance of thermodynamic calculations. The thermodynamic calculations indicated that the (Ti, Nb)(C, N) was thermodynamically less stable than the Ti(C, N), which led to a difference in the microstructures and properties of the cermets prepared using (Ti, Nb)(C, N) and Ti(C, N)+NbC. The cermet prepared using the (Ti, Nb)(C, N) solid-solution powder had a no/weak core–rim structure. Moreover, the surface binder-rich phases of the cermets prepared by the (Ti, Nb)(C, N) solid solution was thinner under vacuum sintering, which was beneficial for improving the surface quality of the cermets. The hardness values of the cermets prepared using (Ti, Nb)(C, N) were greater than those of the cermets prepared using Ti(C, N)+NbC, and the fracture toughness underwent no noticeable change.

用(Ti, Me )(C, N)固溶体粉末代替传统的Ti(C, N)+ Me制备Ti(C, N)基金属陶瓷C混合物逐渐成为热门的研究课题。通过使用 (Ti, Nb)(C, N) 固溶体粉末和 Ti(C, N)+NbC 粉末，在目前的工作中研究了 Ti(C, N) 基金属陶瓷的显微组织和机械性能。热力学计算的指导。热力学计算表明(Ti, Nb)(C, N)在热力学上不如Ti(C, N)稳定，这导致使用(Ti, Nb)( C, N) 和 Ti(C, N)+NbC。使用 (Ti, Nb)(C, N) 固溶体粉末制备的金属陶瓷具有无/弱核 - 缘结构。此外，(Ti,Nb)(C,N)固溶体制备的金属陶瓷表面富粘合剂相在真空烧结下较薄，有利于提高金属陶瓷的表面质量。