Microstructure Analysis of SiC Ceramic Support by Isostatic Processing

摘要

Ceramic supports were prepared by isostatic pressing, and were compared with commercially available ceramic support by extrusion molding process. Results show that structures of section, inner surface and outer surface keep uniform, and the pore is obvious in section, also on the inner surface and outer surface. While supports by extrusion molding process show great differences between internal and surface in structures. During the extrusion molding process, the orientation and rearrangement phenomenon of particle and powder occur obviously under the action of friction and boundary effect, which make pores on the surface blocked seriously. The ceramic support prepared by isostatic processing technology will show better filtration efficiency relatively compared to that by extrusion molding process.