▎ 摘　　要

NOVELTY - Preparing hollow silicon carbide microbeads comprises e.g. (i) mixing graphene oxide and carbon nano-tube and water to form dispersion liquid, (ii) placing dispersion liquid in a spray ball machine to dispersing into microspheres, (iii) filtering and collecting the graphene oxide and carbon nanotube made of ice microsphere to obtain graphene oxide and carbon nano-tube mixed gas aerogel microbeads, (iv) coating taerogel microbeads using phenolic resin or sucrose solution to form spherical powder, (v) solidifying and carbonizing to obtain pyrolytic carbon coated porous graphite beads, (vi) coating porous graphite microbeads with silica sol, heating, solidifying, reacting and sintering, (vii) preparing silicon carbide coated porous graphite micro-bead, (viii) decomposing excess organic carbon in oxidation furnace to obtain silicon carbide microsphere with porous graphite core, and (ix) mixing powder mixed with silicon nitride and silicon carbide micro-powder and sintering. USE - The method is useful for preparing hollow silicon carbide microbeads. DETAILED DESCRIPTION - Preparing hollow silicon carbide microbeads comprises (i) mixing graphene oxide and carbon nano-tube and water to form a dispersion liquid, (ii) placing the dispersion liquid in a spray ball machine to dispersing into microspheres, and collecting by freezing and collecting liquid, (iii) filtering and collecting the graphene oxide and carbon nanotube made of ice microsphere, then freezing and drying for 4 hours to obtain graphene oxide and carbon nano-tube mixed gas aerogel microbeads, (iv) coating the aerogel microbeads using phenolic resin or sucrose solution and spraying and drying to form spherical powder, (v) solidifying, carbonizing technique to obtain pyrolytic carbon coated porous graphite beads, (vi) coating porous graphite microbeads with silica sol, heating and solidifying, and heating at 2000 degrees C in a vacuum furnace with asphalt or other organic carbon and keeping the temperature for 1-2 hours to reacting and sintering, (vii) preparing silicon carbide coated porous graphite micro-bead, (viii) decomposing the excess organic carbon in an oxidation furnace to obtain silicon carbide microsphere with porous graphite core, (ix) mixing powder mixed with silicon nitride and silicon carbide micro-powder with the made silicon carbide microbeads and sintering at a high temperature of 1600-2000 degrees C under argon and bleaching with water to obtain surface-enhanced, compact hollow silicon carbide microbeads.