Abstract:By introducing (WO3+Al) thermites into the (Ti+B4C) combustion system and adjusting the proportion of two systems, TiB2-TiC-(Ti, W)Ccomposite ceramics with different W mass fraction were prepared by SHS centrifugal casting. XRD, FESEM and EDS results show that the ceramic matrix is mainly composed of TiB2, TiC and (Ti, W)C. As W content increases, volume fraction of (Ti, W)C increases, and volume fraction of TiB2 and TiC decrease. Meanwhile, the grains are fined and distributed uniformly. Mechanical properties tests show that relative density and Vickers hardness of the ceramics are on the rise as W content increases, while, flexural strength and fracture toughness of the ceramics firstly increase and then decrease, and achieve maximum when W content is 65%. This is due to the decrease in volume fraction of TiB2 platelet which is the only reinforced phase of the TiB2-TiC-(Ti, W)Ccomposite ceramic.