▎ 摘　　要

NOVELTY - Composite ceramic bearing material is consists of 94-99.4 wt.% quartz glass powder, 0.5-3 wt.% cristobalite powder, 0.1-3 wt.% graphene powder, and 15-24 wt.% total mass of the powder are combined with a plasticizer. USE - Composite ceramic bearing material for harmonic reducer. ADVANTAGE - The composite ceramic bearing material has a high qualified rate of pressing and sintering, and also has strong impact resistance and excellent high-temperature deformation resistance and high-temperature strength. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a composite ceramic bearing of a harmonic reducer, which involves: (A) weighing fused silica glass powder, cristobalite powder, and graphene powder in proportion to form a mixed powder, and putting the mixed powder into a three-dimensional mixer to mix the powder to obtain a uniformly mixed and homogeneous ceramic powder body; (B) weighing the plasticizer in proportion, adding it to the vacuum mixer and heat it to melt; (C) adding obtained ceramic powder and stirring uniformly, after adding all the ceramic powder, stirring for 24 hours and vacuum for 2 hours, then stop stirring to obtain ceramic core slurry; (D) putting the ceramic core slurry into the ceramic core injection machine, and when the material temperature is consistent with the injection process temperature, and pressure-injecting ceramic core slurry into the required mold to make it wet ceramic core; (E) putting the wet ceramic core into a sintering pot filled with alumina filler, and then putting the alumina sintering pot into a box-type roasting furnace for firing; (F) raising temperature to 400 degrees C at a heating rate of 0.1-3 degrees C per minute; and (G) cooling to room temperature with the furnace to obtain the silicon oxide-graphene composite ceramic core.