▎ 摘　　要

NOVELTY - Preparing high-strength layered titanium-based composite material comprises e.g. (i) adding graphene oxide prepared by Hummers method into ethanol, ultrasonically dispersing, adding aluminum nitrate and mixing to obtain mixed solution, placing titanium foil in the mixed acid solution, washing with water and ethanol and then blow drying, (ii) taking titanium foil after being dried in step (i) used as cathode, copper sheet used as anode and mixed solution obtained in step (i) used as electrophoretic deposition solution, fixing the plate spacing between the cathode and the anode and (iii) stacking the graphene oxide-coated titanium foil obtained in step (ii) in the same direction and then sintering under vacuum to obtain layered graphene oxide-reinforced titanium-based composite material. USE - The method is useful for preparing high-strength layered titanium-based composite material. ADVANTAGE - The method: improves the bonding strength of the interface between graphene oxide and titanium foil; avoids the introduction of impurities; and shortens reaction time; and produces high-strength layered titanium-based composite material which has high strength and high plastic properties. DETAILED DESCRIPTION - Preparing high-strength layered titanium-based composite material comprises (i) adding graphene oxide prepared by Hummers method into ethanol, ultrasonically dispersing for 1-1.5 hours, then adding aluminum nitrate and mixing to obtain mixed solution, placing the titanium foil in the mixed acid solution for 10 seconds, then washing with water and ethanol and then blow drying, where the mixed acid solution is prepared by hydrogen fluoride solution with a mass concentration of 40%, nitric acid solution with mass concentration of 65% and water in volume ratio of 1:3:8, (ii) taking titanium foil after being dried in step (i) used as cathode, copper sheet used as anode and mixed solution obtained in step (i) used as electrophoretic deposition solution, fixing the plate spacing between the cathode and the anode and the deposition voltage for electrophoretic deposition, so that the graphene oxide is deposited on the titanium foil of the cathode to form the titanium foil with the graphene oxide coating, the distance between cathode and anode is 60 mm and the voltage of electrophoretic deposition is 10-25 V, and (iii) stacking the graphene oxide-coated titanium foil obtained in step (ii) in the same direction and then sintering under vacuum to obtain layered graphene oxide-reinforced titanium-based composite material, the bending strength of the layered graphene oxide reinforced titanium-based composite material is greater than 1000 MPa, the maximum bending displacement is greater than 10 mm, the tensile strength is greater than 530 MPa, and the elongation is greater than 32%.