▎ 摘　　要

NOVELTY - Preparation of unbounded-phase tungsten carbide-based cemented carbide tool material involves using 2.5-5 %mass nano-carbide ceramic, 2.5-5 %mass nano-oxide ceramics, 0.1-0.5 %mass graphene/carbon nanotube hybrid powder and remainder of tungsten carbide base material, mixing and dispersing the nano-carbide ceramics and nano-oxide ceramics uniformly for nano-ceramics suspension, forming graphene/carbon nanotube hybrid powder into graphene/carbon nanotube hybrid suspension, adding the tungsten carbide base material into the nano-ceramic suspension, mixing uniformly for nano-composite ceramic doped unbounded-phase cemented carbide powder suspension, adding graphene/carbon nanotube hybrid suspension to the cemented carbide powder suspension and ultrasonically-mixing for mixed suspension (A), milling the mixed suspension (A) by ball-milling, drying, sieving for unbounded tungsten carbide-based cemented carbide tool material powder, and molding and pressing the powder into mold blank component. USE - Preparation of unbounded-phase tungsten carbide-based cemented carbide tool material. ADVANTAGE - The method provides unbounded-phase tungsten carbide-based cemented carbide tool material having excellent Vickers hardness, fracture toughness, and thermal conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for unbounded-phase tungsten carbide-based cemented carbide tool material, which comprises 2.5-5 mass% nano-carbide ceramic, 2.5-5 mass% nano oxide ceramic, 0.1-0.5 mass% graphene/carbon nanotube hybrid powder and remainder of tungsten carbide base material.