Method for preparing graphene reinforced aluminum matrix composite material by microwave sintering

The invention discloses a method for preparing a graphene reinforced aluminum matrix composite material by microwave sintering, comprising the steps of: taking graphene nano microchips and aluminum powder as raw materials, carrying out ultrasonic treatment to respectively prepare graphene dispersion liquid and aluminum powder dispersion liquid; mixing the two kinds of dispersion liquid, and carrying out low temperature ball milling, vacuum drying, press forming and microwave sintering to obtain the graphene reinforced aluminum matrix composite material with high density, high strength and high thermal conductivity. The method adopts an ethanol ultrasonic dispersion and ball milling combined method to enable the graphene to evenly disperse in the aluminum matrix, and adopts a microwave sintering technology, thus shortening the preparation time and being highly efficient and energy-saving; the production process is safe and pollution-free, and simultaneously the prepared graphene reinforced aluminum matrix comp