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韩耀,李海燕,谢志鹏,王华栋,李淑琴.烧结温度对振荡压力烧结工艺制备高性能氧化锆陶瓷的影响[J].稀有金属材料与工程(英文),2020,49(2):639~643.[Han Yao,Li Haiyan,Xie Zhipeng,Wang Huadong and Li Shuqing.Effect of Sintering Temperature on the Structures and Properties of High Quality Zirconia Ceramics under Oscillatory Pressure[J].Rare Metal Materials and Engineering,2020,49(2):639~643.]
Effect of Sintering Temperature on the Structures and Properties of High Quality Zirconia Ceramics under Oscillatory Pressure
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Received:April 02, 2019  Revised:May 07, 2019
DOI:
Key words: Zirconia  Sintering temperature  Oscillatory pressure sintering  Property  Microstructure
Foundation item:国家自然科学基金资助(项目号51427802,51672147)
Author NameAffiliation
Han Yao,Li Haiyan,Xie Zhipeng,Wang Huadong and Li Shuqing  
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Abstract:
      In this paper, oscillatory pressure sintering technique (OPS) was used to prepare high quality zirconia ceramics. The effects of sintering temperature on the density, grain size, microstructure and mechanical properties of zirconia ceramics were firstly investigated. The results show that under the application of oscillatory pressure, the variation of relative densities is not obvious while the grain sizes significantly increase during the increased sintering temperature. All specimens reached a nearly full density as there was scarcely any pores on the polished surface. The highest hardness and bending strength of 16.6 GPa and 1455 MPa, respectively, are reached when the target temperature reaches 1300°C. Compared with conventional pressureless and hot pressure sintering process, the introduction of oscillatory pressure significantly reduces the densification temperature of zirconia ceramics, and evidently enhances mechanical strength and fracture reliability.