关键词: 氧化锆活性;烧结性能;氧化锆质定径水口

Abstract: Zirconia powders prepared by chemical method , electric melting method and compounds of them were used as raw materials .The zirconia samples were prepared through granulation , molding , drying and sintering .The effects of raw material activity on sintering properties were investigated by analyzing the physical properties and microstructure of the samples .The results show that the activity of fused zirconia is worse under the condition of adding the same stabilizer , the porosity after sintering is the higher, and the crack of chemical zirconia samples after sintering is serious , both of them can not meet the requirements of zirconia metering nozzle .When the mixing ratio of the two raw materials is 1:1 and the sintering temperature is suitable , the samples with appropriate porosity , sintering shrinkage and compressive strength can be achieved .

Key words: zirconia activity;sintering property;zirconia metering nozzle