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Thermally stimulated depolarization processes in zirconia toughened alumina ceramics

  • Xi'an Jiaotong University
  • Xi'an University of Architecture and Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In this paper, the zirconia toughened alumina (ZTA) ceramics were fabricated by pressureless sintering method. Dielectric relaxation characteristics of both alumina and ZTA ceramics were investigated using thermally stimulated depolarization current (TSDC) method and the relaxation parameters were calculated from the experimental TSDC curves. In addition, the relationship between zirconia doping and dielectric relaxation properties was analyzed. The results showed that doping of zirconia can affect the defect dipoles distributions in ZTA ceramics, and introduces a new relaxation peak at 478K. This new relaxation process may be attributed to the reorientation of dipoles of dopant and oxygen vacancy pairs generated in cubic zirconia grains.

Original languageEnglish
Title of host publicationProceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1110-1113
Number of pages4
ISBN (Electronic)9781509028023
DOIs
StatePublished - 18 Aug 2016
Event1st IEEE International Conference on Dielectrics, ICD 2016 - Montpellier, France
Duration: 3 Jul 20167 Jul 2016

Publication series

NameProceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016
Volume2

Conference

Conference1st IEEE International Conference on Dielectrics, ICD 2016
Country/TerritoryFrance
CityMontpellier
Period3/07/167/07/16

Keywords

  • Defect dipole
  • TSDC
  • ZTA
  • dielectric relaxation

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