▎ 摘　　要

NOVELTY - Preparing graphene-loaded spherical metal comprises (i) preparing expanded graphite; (ii) using plasma auxiliary high energy ball milling device, using oleic acid as wet milling medium and surface modifying agent, ball milling the mixed metal powder of copper and tin, performing high pressure discharge treatment in the ball milling process, and controlling the pressure in the ball milling tank to 0.01-0.03 Mpa; (iii) adding expanded graphite in the plasma auxiliary high energy ball milling, performing ball milling treatment and high pressure discharge treatment, and controlling the pressure in the ball milling tank to 0.5-0.1 Mpa; and (iv) cooling the ball milling mixture with petroleum ether, performing ultrasonic oscillation, settling, collecting the upper layer liquid for centrifugal processing, drying the centrifugal product to obtain powder i.e. graphene load spherical metal. USE - The method is useful for preparing graphene-loaded spherical metal. ADVANTAGE - The metal improves the anti-friction and anti-wear performance of lubricant, reduces the wear of mechanical parts, repairs the damaged surface of the substrate surface, forms a good film protection on the surface of the substrate, and can be used as an additive for lubricating oil. DETAILED DESCRIPTION - Preparing graphene-loaded spherical metal comprises (i) preparing expanded graphite; (ii) using plasma auxiliary high energy ball milling device, using oleic acid as wet milling medium and surface modifying agent, ball milling the mixed metal powder of copper and tin, and performing high pressure discharge treatment in the ball milling process, where the discharge voltage is 25-28 KV, the ball milling tank is filled with argon gas as discharge gas, and controlling the pressure in the ball milling tank to 0.01 0.03 Mpa; (iii) adding expanded graphite in the plasma auxiliary high energy ball milling, performing ball milling treatment and high pressure discharge treatment, where the discharge voltage is 18-20 KV, the ball milling tank is filled with argon gas as the discharge gas, and controlling the pressure in the ball milling tank to 0.5-0.1 Mpa; and (iv) cooling the ball milling mixture with petroleum ether, performing ultrasonic oscillation, settling, collecting the upper layer liquid for centrifugal processing, drying the centrifugal product to obtain powder i.e. graphene load spherical metal.