▎ 摘　　要

NOVELTY - A nano magnetic lubricant comprises iron(II,III) oxide, inorganic fullerene-molybdenum disulfide, and graphene at mass ratio of 1:2-20:0.02-0.5. The iron(II,III) oxide is nano ball having particle diameter of 15-30 nm. The inorganic fullerene-molybdenum disulfide is hollow fullerene-like nano ball structure having particle size of 80-200 nm. The specific surface area of graphene is 3000-3400 m2/g. USE - Nano magnetic lubricant used for precision machinery lubrication. ADVANTAGE - The lubricant product has high yield, good purity, good dispersion, excellent magnetism and lubricity, and long-term lubrication effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of lubricant comprising taking 1000 pts. wt. 15-30 nm iron(II,III) oxide and 0.002-0.05 wt.% oxidized graphene-containing aqueous solution and ultrasonically dispersing at 30-50 degrees C for 20-40 minutes; adding 0.1-0.5 pt. wt. disodium EDTA, 2-30 pts. wt. sodium sulfide, 15-150 pts. wt. ammonium molybdate, and 0.2-2 pts. wt. sodium oxalate solution, adjusting pH to 7, transferring into pressurized vessel, reacting at 160-180 degrees C for 1-2 hours, adjusting pH to 9-10, cooling to 90-100 degrees C, adding 0.02-0.2 pt. wt. sodium boron hydride, insulating for 2-3 hours, cooling, centrifuging, washing with deionized water, and drying; and placing in furnace, purging with high purity nitrogen gas at velocity of 0.05-1 m/second, calcining at 400-500 degrees C for 10-20 minutes, calcining to 900-1100 degrees C for 30-60 minutes, cooling, and taking out.