▎ 摘　　要

NOVELTY - Zirconia-based nanoceramic mold material comprises yttria-stabilized nano zirconia as a matrix. The micron alumina as a reinforcing phase is added to micrometer molybdenum. The micron carbonyl nickel and graphene are added as a sintering aid. The raw materials are 8-16% alumina, 1-3% graphene oxide, 0.5-1.5% molybdenum, 2-4% carbonyl nickel and rest yttrium-stabilized nano-zirconia. The graphene oxide is ultrasonically dispersed in an ethanol solution of N, N-dimethylformamide. USE - Zirconia-based nanoceramic mold material. ADVANTAGE - The zirconia-based nanoceramic mold material has very high hardness, wear resistance, corrosion resistantance and conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for producing zirconia-based nanoceramic mold material, which involves: (A) adding yttrium-stabilized nano-zirconia and 0.2-1 wt.% polyethylene glycol as a dispersant, adding anhydrous ethanol as the dispersion medium, stirring, adjusting the pH value os suspension to 3-4; (B) crushing alumina and placing in electric vacuum oven at 110-120 degrees C, drying and sieving in an inert gas stream, and adding anhydrous ethanol with alumina suspension; (C) mixing graphene oxide and N, N-dimethylformamide in ethanol solution; (D) mixing the yttrium-stabilized nano zirconia suspension and the oxidized graphene suspension, and mixing molybdenum with nickel carbonyl at 600-900 degrees C; and (E) adding an organic solvent to the graphene-metal oxide composite material, mixing and grinding, and sintering by hot pressing.