▎ 摘　　要

NOVELTY - Preparation of graphene-chrome-titanium-aluminum composite material involves mixing refined graphene nano powder, treated titanium powder, chromium powder and aluminum powder, obtaining mixture (C), ultrasonically dispersing at 80-100 Hz, increasing temperature of the mixture (C) to 100 degrees C, maintaining the temperature, ultrasonically stirring for 30-40 minutes, such that the mass ratio of polyethylene glycol and mixture (C) is 1:100, ultrasonically dispersing for 10-20 minutes, obtaining mixture (D), ball-milling for 280-300 hours, and vacuum-drying at 170-180 degrees C for 20-22 hours. USE - Preparation of graphene-chrome-titanium-aluminum composite material for manufacturing coated cutter (claimed). ADVANTAGE - The coated tool using the graphene-chrome-titanium-aluminum composite material has excellent wear resistance, corrosion resistance, and compatibility. DETAILED DESCRIPTION - Preparation of graphene-chrome-titanium-aluminum composite material involves adding treated graphene nano powder into deionized water contained in a vessel provided with a temperature sensor, obtaining suspension (A), placing obtained suspension (A) in an ultrasonic generator at 120-170 Hz, stirring at the speed of 180-220 rpm, increasing temperature of the suspension (A) to 105 degrees C, maintaining the temperature, stirring for 35 minutes, adding polyethylene glycol such that the ratio of polyethylene glycol and suspension (A) is 1:80, continuously stirring for 15-20 minutes, obtaining mixture (B) such that the volume of deionized water is 7-8 times the volume of graphene nano powder, adding resultant mixture (B) into a ball mill, ball milling for 180-220 hours, drying the mixture (B) under vacuum at 140-160 degrees C for 24-25 hours, mixing resultant refined graphene nano powder, with treated titanium powder, chromium powder and aluminum powder, obtaining mixture (C), placing obtained mixture (C) in an ultrasonic generator, ultrasonically dispersing at 80-100 Hz, increasing temperature of the mixture (C) to 100 degrees C, maintaining the temperature, ultrasonically stirring for 30-40 minutes, such that the mass ratio of polyethylene glycol and mixture (C) is 1:100, ultrasonically dispersing for 10-20 minutes, obtaining mixture (D), ball-milling for 280-300 hours, and vacuum-drying at 170-180 degrees C for 20-22 hours. The pretreated graphene nano powder is obtained by adding nano-graphene powder to 1.6 wt.% hydrofluoric acid aqueous solution, ultrasonically processing for 60-90 minutes, washing resultant precipitate using deionized water, maintaining for 60-90 minutes, washing the upper solution, and adjusting the pH of the aqueous solution to more than 6.5. An INDEPENDENT CLAIM is included for application of graphene-chrome-titanium-aluminum composite material for manufacturing coated cutter.