(Ti,Ta)(B,C)–(Ta,Ti)C composites were synthesized by reactive hot pressing using commercial TaB₂ and TiC powders as starting materials. The reaction process and effects of TiC contents in the starting batches on the microstructure and mechanical properties of the resultant composites were reported. The microstructure of the composites was refined due to reaction and solid solution coupling effect. A core-rim structure was observed in the (Ti,Ta)(B,C) grains. Vickers hardness, flexural strength and fracture toughness of the composites increased with increasing the TiC content. The TaB₂–70 mol.% TiC sample (starting batch composition) prepared by hot pressing at 2000 °C for 1 h had a super high Vickers hardness value of 30.5 GPa (indented under 9.8 N, 15 s) approaching that of B₄C-based composites. Good flexural strength (714 MPa) and fracture toughness (5.4 MPa m^1/2) were also found.

（Ta，Ta）（B，C）–（Ta，Ti）C复合材料是通过反应热压合成的，使用商业化的TaB ₂和TiC粉末作为原料。报道了反应过程和起始批料中TiC含量对所得复合材料的微观结构和力学性能的影响。由于反应和固溶体的耦合作用，复合材料的微观结构得以改善。在（Ti，Ta）（B，C）晶粒中观察到了芯-边缘结构。随着TiC含量的增加，复合材料的维氏硬度，弯曲强度和断裂韧性均提高。通过在2000°C的温度下热压1 h制备的TaB ₂ –70 mol。％TiC样品（起始批料成分）具有30.5 GPa的超高维氏硬度值（在9.8 N，15 s下压痕），接近B₄基于C的复合材料。还发现了良好的弯曲强度（714 MPa）和断裂韧性（5.4 MPa m ^1/2）。