Influence of Alumina Particle Shape on the Firing Deformation of the Large Body Formed by Slip Casting

Abstract

The purpose of this study is to elucidate the relation between alumina particle shapes and the firing deformation of the large body formed by slip casting. Two different shapes of alumina powders with the same particle size were used to cast the large green bodies with the size of 200×200×30mm. The slurries were filled into the mold set vertically. The body was taken out from the mold and stored for a week in the dry room at 35°C. The bodies were fired at 1600°C by electric furnace. Consequently, the large firing deformations were observed on the sintered bodies with the tabular alumina, but not on the bodies with the globular one.