Ceramics Based on Cubic ZrO2 (Y2O3) with Addition of a Fused Al2O3 – ZrO2 (Y2O3) Eutectic

Ceramics based on cubic zirconia with addition of crushed granules of fused or rapidly cooled Al₂O₃ – ZrO₂ (Y₂O₃) eutectic are developed and their properties (shrinkage, open porosity, apparent density, bending strength, and grain size) determined. The ceramic composites can find use in the preparation of electrolyte material for high-temperature fuel cells.     

ZnO Agglomeration and Its Effect on the Preparation of a Mixture for Production of Varistors by a Dopant Deposition Method

A suspension mixture for production of ZnO-based varistors is prepared by a dopant deposition method. The effect of deposition conditions (ZnO concentration in the suspension and the use of a thinning agent) on the density, ZnO grain size, and electrical characteristics of ceramics prepared from the deposited suspensions is studied. Properties of ceramics prepared by the suspension method are compared to those of ceramics prepared by conventional methods.