LIANG Hailong, WU Yanxia, ZHAO Chunlin, CHEN Xin , TANG Jie
(China Building Materials Academy, Beijing 100024, China)

Abstract: Because of its high abrasion resistance, high corrosion resistance, high thermal conductivity, good thermal stability and good microwave absorbing properties, SiC ceramic honeycomb has a good research value as a catalyst carrier. In this paper, the porous silicon carbide honeycomb ceramics with high strength and high porosity were prepared by extrusion molding technology through series of research on different particle size distribution, sintering additive content and pore forming agent. And the mechanical properties, microstructure and pore structure of porous honeycomb silicon carbide ceramics were analyzed. The results show that with the silicon carbide powders d₅₀=43 μm and d₅₀=3.8 μm, the mass ratio is 85:15, the sintering assistant is 12%, the porous silicon carbide honeycomb carrier material with the porosity and compressive strength (axial) were 27.27% and 36.47 MPa, was obtained. It laid the foundation for the application of porous silicon carbide honeycomb ceramic carrier.

Key words: silicon carbide; ceramic honeycomb; carrier