▎ 摘　　要

NOVELTY - Preparing magnesium-based composite material comprises (i) synthezing magnesium nanoparticles coated with graphene (a) pre-treating bromoethane and tetrahydrofuran, mixing, (b) introducing under anhydrous and anaerobic conditions bromoethane and tetrahydrofuran into a container magnesium ribbon, stirring, (c) introducing graphene into organic magnesium solution, introducing 1-2 g sodium hydride and reacting, centrifuging, acetone washing, (ii) synthezing magnesium nanoparticles coated with graphene/magnesium-based composite material: (1) dispersing magnesium nanoparticles coated with graphene powder and magnesium alloy powder in anhydrous ethanol, performing ultrasonic dispersion, introducing suspension of magnesium nanoparticles coated with graphene dropwise into the suspension of magnesium alloy while stirring, (2) placing powder of magnesium nanoparticles coated with graphene/magnesium alloy composite into a mold and sintering. USE - Preparation method of magnesium-based composite material coated graphene magnesium nano-particles used in aerospace, automotive light industry, and electronic industry, etc. ADVANTAGE - The method provides magnesium-based composite material with excellent interface binding characteristics. The magnesium nano-particle coated graphene exhibits nano-contact and firm bonding interface characteristics tissue is effectively improved, crystal grain and separated phase size is obviously refine. DETAILED DESCRIPTION - Preparing magnesium-based composite material with excellent interfacial bonding characteristics, using magnesium nanoparticles coated with graphene comprises (i) synthezing magnesium nanoparticles coated with graphene (a) pre-treating bromoethane and tetrahydrofuran, mixing them to obtain a mixture of bromoethane and tetrahydrofuran, (b) gradually introducing under anhydrous and anaerobic conditions 32-40 ml of mixture of bromoethane and tetrahydrofuran dropwise into a container containing 0.5-0.8 g magnesium ribbon, stirring the reaction, (c) introducing 0.03-0.08 g graphene into organic magnesium solution and stirring, introducing 1-2 g sodium hydride and reacting, centrifuging, acetone washing, and vacuum drying, magnesium nanoparticles coated with graphene powder are obtained, (ii) synthezing magnesium nanoparticles coated with graphene/magnesium-based composite material: (1) dispersing magnesium nanoparticles coated with graphene powder and magnesium alloy powder in anhydrous ethanol, performing ultrasonic dispersion, introducing suspension of magnesium nanoparticles coated with graphene dropwise into the suspension of magnesium alloy while stirring, (2) placing powder of magnesium nanoparticles coated with graphene/magnesium alloy composite into a mold and sintering. An INDEPENDENT CLAIM is included for a magnesium nano-particle coated graphene magnesium-based composite material with excellent interface binding.