▎ 摘　　要

NOVELTY - Preparation of graded graphene/magnesium composite material involves dissolving hydroxyethylmethacrylate and trimethylolpropane triacrylate in n-butanol, stirring, adding oleic acid, stirring, adding magnesium powder and graphene powder, stirring, ball-milling, adding benzoyl peroxide and N,N-dimethylaniline, stirring, centrifuging obtained graphene/magnesium composite slurry, curing centrifuged slurry, demolding, vacuum-drying, sintering in argon gas atmosphere, and cooling to room temperature. USE - Preparation of graded graphene/magnesium composite material (claimed). ADVANTAGE - The method enables preparation of graded graphene/magnesium composite material with excellent corrosion resistance and mechanical property. DETAILED DESCRIPTION - Preparation of graded graphene/magnesium composite material involves dissolving 5-15 mass parts hydroxyethylmethacrylate as an organic monomer and 1-3 mass parts trimethylolpropane triacrylate as a crosslinking agent in 29.125-60.25 mass parts n-butanol, stirring, adding 1.5-2.25 mass parts oleic acid as a dispersant, stirring, adding 27-40.5 mass parts magnesium powder having particle size of 60 nm and 3-4.5 mass parts graphene powder having particle size of 500 nm, uniformly stirring, ball-milling for 24 hours, adding 2-5 mass parts benzoyl peroxide as an initiator and 0.25-0.625 mass part N,N-dimethylaniline as a catalyst, stirring, obtaining graphene/magnesium composite slurry, adding the graphene/magnesium composite slurry to a mold in a centrifuge, centrifuging at 500-2000 rpm for 10-20 minutes, such that graphene and magnesium particles form continuous gradient distribution, curing centrifuged slurry at 60-80 degrees C for 30 minutes in a vacuum oven, demolding, vacuum-drying at 100-15 degrees C for 3-6 hours, sintering by heating at rate of 1 degrees C/minute from room temperature to 300 degrees C for 3 hours, and at rate of 3 degrees C/minute to 610-630 degrees C for 2 hours, respectively, in argon gas atmosphere, and cooling to room temperature. The flow rate of argon gas is 0.4-0.8 L/minute.