The microstructure

pore structure and grain growth of porous alumina ceramics by template method are studied by SEM. It is found that the pore structure of porous alumina ceramics by template method is uniform

interconnected and controllable. With the increase of the solid volume fraction

the porosity of porous ceramic decreases. The wall of hole doesn’t appeared abnormal grain growth

and the relative density of porous ceramic is much higher compare with foaming method.