▎ 摘　　要

NOVELTY - High conductivity composite metal material comprises matrix and graphene layers, where matrix includes metal material i.e. 2.8-3.4 wt.% silver, 1-2.6 wt.% aluminum, 2-2.8 wt.% cobalt, 2.8-3.4 wt.% nickel, 3-3.6 wt.% calcium, 1-2.4 wt.% tin, 4-8 wt.% copper and iron. USE - Used as high conductivity composite metal materials. ADVANTAGE - The composite metal has strong anti-corrosion ability and high conductivity, and can improve the conductivity of composite metal materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing high conductivity composite metal material comprising (i) adding base of various metal raw materials into vacuum high-temperature melting furnace at 1200-1500 degrees C and pressure at 100-500 Pa, vacuum high temperature melting furnace heating rate of 50-80 degrees C/minutes to obtain sheet-type substrate, (ii) cooling sheet-type substrate in step (i) to 500-600 degrees C, and temperature of sheet-type substrate is 500-600C for 3-8 hours, and heat preservating and annealing at 80-100 degrees C/minutes and then cooling to room temperature, and (iii) placing sheet-type substrate in step (ii) in a vacuum furnace chamber, pressure of vacuum chamber is 0-2 Pa and temperature is 400-800 degrees C, mixing, passing protective gas, and raising temperature to 800-1200 degrees C and reaction time of carbon source is 10-20 minutes, cooling matrix in vacuum chamber to room temperature to obtain graphene layer, and carrying out carbon source reaction and thickness of 5-50 nm, and (iv) immersing sheet-type substrate coated with graphene layer in step (iii) in deionized water for 3-6 hours, filtering, and coating activator on sheet-type substrate coated with graphene layer and placing in reaction furnace and temperature in reaction furnace is 300-700 degrees C, and coating flaky layer with graphene layer, washing with deionized water and then drying to obtain high conductivity composite metal materials.