▎ 摘　　要

NOVELTY - Preparing graphene-modified hard alloy involves uniformly mixing graphite, dispersant, hard alloy and solvent, and performing high-energy ball milling to peel graphite into graphene to obtain hard alloy composite powder. Hard alloy composite powder is granulated, pressed, degummed, and sintered to obtain graphene-modified hard alloy. USE - Method for preparing graphene-modified hard alloy (claimed). ADVANTAGE - The method uses the ball milling process of cemented carbide powder to simultaneously realize the peeling dispersion of graphene and the ball milling refinement of cemented carbide powder, avoids the complicated process of stripping graphene separately, combines the powder metallurgy process precisely, and does not change the existing process conditions. It can achieve efficient and rapid preparation of target materials. At the same time, graphene using mechanical ball milling in situ peeling has the advantages of complete structure and low degree of defects, which can significantly improve its sintering stability, and has significant effects on the performance of carbide and grain refinement effect, with important industrial application prospects.