J. Inorg. Mater.

Precursor powders of ZrO2-Al2O3, ZrO2-Fe2O3 and ZrO2-(Al2O3, Fe2O3) systems were produced by frozen-drying. Their phases transformation and microstructure were developed at deferent temperatures and sintering durations. Microstructure with fine grains was obtained in the ZrO2-(Al2O3, Fe2O3) system for the composition (ZrO2:Al2O3:Fe2O3=60:32:8 mol%) sintered at 1400degreesC for 15h. The results obtained show that Fe2O3 has the effect of glomeration of grains in ZrO2 base ceramic materials.Precursor powders of ZrO2-Al2O3, ZrO2-Fe2O3 and ZrO2-(Al2O3, Fe2O3) systems were produced by frozen-drying. Their phases transformation and microstructure were developed at deferent temperatures and sintering durations. Microstructure with fine grains was obtained in the ZrO2-(Al2O3, Fe2O3) system for the composition (ZrO2:Al2O3:Fe2O3=60:32:8 mol%) sintered at 1400degreesC for 15h. The results obtained show that Fe2O3 has the effect of glomeration of grains in ZrO2 base ceramic materials