628 Diamond Dispersed Cemented Carbide Produced without Using High Pressure Equipment

On bending strength of superhard composite materials based on WC–Co hardmetals

“…The above assumption that the fracture in the superhard composite stems from that in the hardmetal has received some experimental support. Moriguchi et al [11] reported the data on mechanical properties of VK60 hardmetal with dispersed diamond crystals, the volumetric content of the superhard phase V C being 0.2. The photograph of a indentation-fractured microstructure [11] demonstrates that the cracks grow in the hardmetal matrix while skirting the diamond particles.…”