Abstract:

The zirconia sizing nozzle was prepared by using raw materials of monoclinic zirconia sized 0.044mm & 0.002 6mm and partially stabilized fused zirconia as well as superfine secondary stability sized 0.149mm & 0.074mm mixed with Y2O3 and CeO2 composite rare earth additives，which was molded by 200t hydraulic machine under the pressure of 13MPa and sintered at 1 700℃.The results show that by adding 0.3% Y2O3 and 0.3% CeO2 composite rare earth additives and 15% superfine secondary stability zirconia，the product properties have some improvements，such as decreased apparent porosity，significantly increased bulk density and better thermal shock resistance.