Combustion Synthesis of Porous Si3N4 Based Ceramics with Glass as Additives

In this paper, porous silicon nitride ceramics were prepared feasibly by combustion synthesis with different glasses as additives. The results reveal that the morphology, strength and porosity are relevant to glass type. When BN is added, the porosity and strength is depended on the glass content. With the increasing glass content, the porosity of the composite decreased and the strength increased.