▎ 摘　　要

NOVELTY - A hard alloy with mixed crystal structure is formed by firing a component (A) comprising 80-90 pts. wt. tungsten carbide, 5-9 pts. wt. cobalt, 0.3-0.7 pt. wt. chromium carbide and 0.4-0.9 pt. wt. titanium carbide, and a component (B) comprising 80-90 pts. wt. tungsten carbide, 5-9 pts. wt. cobalt, 0.3-0.7 pt. wt. chromium carbide, 0.4-0.9 pt. wt. titanium carbide and 0.2-0.5 pt. wt. graphene. The tungsten carbide in the component (A) and the graphene in the component (B) are ball milled to 600 mesh. USE - The hard alloy with mixed crystal structure is useful for cutting tool, mining tool, and wear-resistant corrosion resistant component application, and excavating high hard rock layer. ADVANTAGE - The hard alloy with mixed crystal structure: utilizes graphene having a network molecular structure, which can effectively enhance the connection strength between gas molecules, can effectively ensure the wear resistance of the alloy while ensuring the toughness of the alloy; and uses titanium carbide as a transition metal carbide whose bond type is composed of ionic bonds, covalent bonds and metal bonds mixed in the same crystal structure, which further improves the performance of the alloy. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the hard alloy with mixed crystal structure.