Abstract
Well-sintered zirconia ceramics are hardly obtained by conventional solid state reaction below 1500°C.
However, it was found that the sinterability of the zirconia ceramics can be enhanced by using the mixed powders composed of ZrO2 raw powder and a pulverized calcined ZrO2 powder containing high concentrations of Y2O3. For example, the well-sintered partially stabilized zirconia ceramics containing 5 mol% Y2O3 was able to be prepared by firing even at 1300°C using the ZrO2 powder containing 40 mol% Y2O3 and ZrO2 raw powders.
