Strengthening cemented carbides by activated nano TaC

In this study, activated nano TaC was introduced into WC-Co cemented carbides to enhance their comprehensive performance properties. Changes of mechanical properties, elements distributions, phase constitutions and microstructures the were examined as a function amount. It found that due addition TaC, nanoscale Co-rich particles cubic-Ta4C3 precipitates induced dispersed within WC grains, which had good coherent interfacial relationship with hard matrix. The combined strengthening effects solid solution in resulted excellent properties carbides. Particularly, rupture strength has achieved highest among those counterparts reported literature so far. This study opens new perspective use compound modulate phases cermet materials for high performance.