▎ 摘　　要

NOVELTY - Preparing aluminum matrix composite material reinforced by graphene involves adding crystalline flake graphite powder in 98% concentrated sulfuric acid, then added graphite powder, 50-80 wt.% sodium nitrate and 2-4 times weight of potassium permanganate, then stirred mechanically under ice bath for 30-120 minutes then heated at 30-4 degrees C constant temperature for 4-5 hours, then added deionized water and hydrogen peroxide, stirred for 1-3 hours, centrifuged and washed with 5% concentration hydrochloric acid is added until no sulfate ion to obtained graphene oxide. USE - Method for preparing aluminum matrix composite material reinforced by graphene (claimed). ADVANTAGE - The method enables to prepare aluminum matrix composite material reinforced by graphene has greatly improves comprehensive performance of aluminum. DETAILED DESCRIPTION - Preparing aluminum matrix composite material reinforced by graphene involves adding crystalline flake graphite powder in 98% concentrated sulfuric acid, then added graphite powder, 50-80 wt.% sodium nitrate and 2-4 times weight of potassium permanganate, then stirred mechanically under ice bath for 30-120 minutes then heated at 30-4 degrees C constant temperature for 4-5 hours, then added deionized water and hydrogen peroxide, stirred for 1-3 hours, centrifuged and washed with 5% concentration hydrochloric acid is added until no sulfate ion to obtained graphene oxide, then added graphene oxide into 5-10 wt.% hydrazine hydrate solution for reduction at 75-90 degrees C for 0.5-2 hours to obtained graphene, then ultrasonically dispersed graphene in ethanol solution, added aluminum powder to graphene in ratio of 100:(0.05-1), then added aluminum powder, ultrasonic and stirred uniformly to obtained mixed slurry, then ball milld mixed slurry by high energy under protection of inert gas or nitrogen, then centrifuged, separated, vacuum dried to obtained graphene/aluminium powder composite particles, then pre-compressed composite powder under protection of inert gas or nitrogen to obtained preform, then electric spark and sintered preform, where vacuum degree is 0.05-0.2 Pascal, applied pressure is 45-60 mage Pascal, sintered temperature is 550-650 degrees C for 1-10 minutes to obtained graphene-reinforced aluminum-base composite material.