Microstructure Analysis of Mullite Microporous Support Body by Cold Isostatic Processing

摘要

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