(W,Ti)C-(Ni,Co) nanocomposite with various W/Ti weight ratios were produced by self-propagating high temperature synthesis (SHS)method. The effect of the W/Ti weight ratio of the initial mixture on the microstructure and carbide morphology of the final product was investigated. Experimental results indicate that (W,Ti)C particles exhibit fine size and homogeneous distribution in (Ni,Co) matrix, and solution of W in TiC is proved by X-ray diffraction (XRD) and SEM-EDS analysis. Moreover, with the increasing of W/Ti weight ratio, rounding and growth of the hard phase particles are observed.

Keywords: (W,Ti)C-(Ni,Co) nanocomposites, Self-propagating high temperature synthesis (SHS), Microstructure.