Microstructure and mechanical properties of ultrafine WC-Ni-VC-TaC-cBN cemented carbides fabricated by spark plasma sintering

► Ultrafine WC-Ni-VC-TaC-cBN cemented carbides were fabricated. ► Almost full dense cermet of high hardness and high strength. ► Combining enhancement method from sparking plasma sintering, WC grain growth inhibitor and addition of superhard materials.