▎ 摘　　要

NOVELTY - Aluminum brazing filler suspension and suspended graphene oxide are mixed, ultrasonically processed, vacuumized, dried, placed in plasma enhanced chemical vapor deposition vacuum apparatus and reduced to obtain graphene/aluminum brazing material. Obtained brazing material is pressed into foil, and placed between welding surface, to obtain to-be-welded sample. Sample is then placed in vacuum brazing furnace, and temperature is increased. Resultant material is heat-preserved and cooled to obtain graphene-reinforced aluminum matrix composite-assisted brazing filler metal. USE - Manufacture of graphene-reinforced aluminum matrix composite-assisted brazing filler metal by welding method (claimed). DETAILED DESCRIPTION - Graphene oxide is added to deionized water and ultrasonically processed for 2-3 hours to obtain graphene oxide suspension. To a stainless steel, milled aluminum brazing material is added and milled at 300-350 rpm for 4-5 hours. To the polished aluminum brazing filler metal, absolute ethanol is added to obtain aluminum brazing filler suspension. The obtained aluminum brazing filler suspension and suspended graphene oxide are mixed, and ultrasonically processed at 0 degrees C for 2-3 hours, to obtain mixed powder. The obtained powder is processed at 300-350 degrees C under vacuum condition, and dried for 2-3 hours. The content of graphene oxide in the dried powder is 0.5-6 %mass. The resultant dried powder is placed in plasma enhanced chemical vapor deposition vacuum apparatus, processed at 400-500 degrees C, and hydrogen is introduced. The resultant powder is then subjected to reduction treatment for 2-4 hours to obtain graphene/aluminum brazing material. The obtained graphene/aluminum brazing material is pressed into foil, to obtain graphene/aluminum brazing material foil. The obtained foil is placed between welding surface, to obtain to-be-welded sample. The obtained sample is then placed in a vacuum brazing furnace, and the temperature is increased to 520-600 degrees C. The resultant material is heat-preserved for 5-30 minutes and cooled to room temperature to obtain graphene-reinforced aluminum matrix composite-assisted brazing filler metal.