▎ 摘　　要

NOVELTY - Graphene film-iron alloy composite material comprises 35-68 vol.% graphene film layer and iron alloy layer comprising 0.05-0.3 wt.% vanadium, 0.3-0.9 wt.% titanium and 0.2-1 wt.% zinc. The graphene film-iron alloy composite material has flexural strength of 347-504 MPa, Brinell hardness of more than 45 HB, thermal conductivity of 374-530 W/(mx K) and thermal expansion coefficient of (5.9-7.5)x 10-6/K. USE - Used as graphene film-iron alloy composite material. ADVANTAGE - The composite material has high thermal conductivity, high strength and low expansion coefficient. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene film-iron alloy composite material, comprising (i) cleaning and drying graphene film surface and uniformly mixing prepared iron alloy powder material; and (ii) stacking iron alloy powder and graphene film layer by layer in mold to desired thickness and vacuum-hot pressing in vacuum environment of more than 1x 10-2 Pa.