+Advanced Search
Effect of Sintering Temperature on the Structures and Properties of High Quality Zirconia Ceramics under Oscillatory Pressure
Author:
Affiliation:

1.Aerospace Institute of Advanced Materials &2.Processing Technology;3.State Key Laboratory of New Ceramics and Fine Processing,Tsinghua University

Clc Number:

TQ174

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    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.

    Reference
    Related
    Cited by
Get Citation

[Han Yao, Li Haiyan, Xie Zhipeng, Wang Huadong, 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.]
DOI:10.12442/j. issn.1002-185X. QH20190048

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:April 02,2019
  • Revised:May 07,2019
  • Adopted:October 23,2019
  • Online: March 12,2020
  • Published: