PZT陶瓷冷烧结工艺的优化与压电性能研究

Translated title of the contribution: Optimization of cold sintering process and piezoelectric properties of PZT ceramics

Ru Guo, Yupeng Ma, Yan Zhang, James Roscow, R. Chris Bowen, Dou Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

To improve the density of samples in cold sintering process and enhance the piezoelectric properties, the high piezoelectric coefficient PZT ceramics at room temperature were prepared by surface modification of a lead zirconate titanate PZT powder and optimization of PZT particle size. The cold sintering process of PZT ceramics was optimized. The results show that a Li2MoO4 coating with a thickness of 150 nm is formed on the surface of the PZT powder, which is beneficial to the particle rearrangement and the dissolution-precipitation process during cold sintering. A combination of coarse particles [63, 200) μm and fine particles 1-3 μm provides a close connection between the particles due to the fine particles flowing into the gaps and holes between the coarse particles, so as to obtain a high density (6.49 g/cm3) and relative density (85.40%). This increase in density allows the samples to obtain excellent dielectric and piezoelectric properties. For example, the relative permittivity εr and loss tangent tanδ at 1 kHz are 66.8 and 0.288, respectively; and the piezoelectric coefficient d33 at 110 Hz is 71 pC/N.

Translated title of the contributionOptimization of cold sintering process and piezoelectric properties of PZT ceramics
Original languageChinese (Traditional)
Pages (from-to)3119-3127
Number of pages9
JournalZhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology)
Volume51
Issue number11
DOIs
Publication statusPublished - 26 Nov 2020

Keywords

  • Cold sintering
  • Lead zirconate titanate
  • Particle size distribution
  • Piezoelectric coefficient
  • Relative density

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Geotechnical Engineering and Engineering Geology
  • Metals and Alloys
  • Materials Chemistry

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