An in situ (W,Ti)C–Ni composite fabricated by SHS method

The combustion synthesis reaction was combined with liquid phase sintering to fabricate net-shape TiC–Ni and TiC–WC–Ni composites in a single processing operation. When Ti and C powders used for in situ production of TiC–Ni cermet, the final product was porous and had low strength. By the addition of fine W powder with W/Ti = 1 molar ratio, the product contained (Ti,W)C, W2C and mix compounds of type Ni2W4C. Using W with W/Ti = 2 molar ratio results in a dense high strength product containing (Ti,W)C and WC.