▎ 摘　　要

NOVELTY - Preparing porous silicon carbide ceramics by sintering using phenolic resin as a carbon source involves taking graphene, zirconium carbide, boron carbide, silicon carbide, crosslinking agent or coupling agent and colloidal carrier, and mixing uniformly at high stirring. The obtained mixture is added to the material tank and grounded to obtain the graphene/carbide polymer primary polymer. The anti-flocculant and anti-precipitation agent addde to the obtained graphene/carbide polymer primary polymer, and then grounding by a high-energy grinder to obtain a solvent-free colloid. The silicon carbide whiskers and phenolic resin added to the solvent-free colloid, added absolute ethanol, and obtained ceramic slurry after ball milling. The obtained ceramic slurry is dried, extruded, and temperature-programmed and sintered, silicon carbide ceramics are obtained. USE - Method for preparing porous silicon carbide ceramics by sintering. ADVANTAGE - The method enables to prepare porous silicon carbide ceramics by sintering adopts phenolic resin as the carbon source of silicon carbide ceramics, the ceramics are uniform and compact, improves all aspects of performance, avoids product defects caused by uneven sintering, and the finished product is more suitable for high-precision industrial production requirements.