Low temperature sintering of Bi0.5Na0.5TiO3 based ceramics

G. Yesner, M. Kuciej, A. Safari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Bi-based piezoelectric ceramics are a good candidate to replace lead zirconate titanate (PZT) for use as multilayer actuators (MLA) in diesel fuel injectors due to their moderate piezoelectric properties at room temperature. Current MLA use PZT with copper internal electrodes and require sintering at low temperature and controlled oxygen atmosphere. A combination of Bi2O3, CuO, Li2CO3, ZnO, and B2O3 are added to 0.88Bi1/2Na1/2TiO3 - 0.08Bi1/2K1/2TiO3 - 0.04BaTiO3 (BNT-BKT-BT) for sintering at 900°C in air or controlled atmosphere. The low temperature sintered ceramics have similar room temperature properties compared to ceramics sintered at 1150°C. Low temperature sintering results in softening of piezoelectric properties and lower depolarization temperature. Sintering in controlled oxygen atmosphere enables the Bi-based ceramic to be co-fired with Cu electrodes. The co-fired ceramic with Cu electrodes demonstrates the feasibility of lead-free BNT-based multilayer actuators with Cu base metal electrodes.

Original languageEnglish (US)
Title of host publication2015 Joint IEEE International Symposium on the Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop, ISAF/ISIF/PFM 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages21-23
Number of pages3
ISBN (Electronic)9781479999743
DOIs
StatePublished - Jul 29 2015
EventJoint IEEE International Symposium on the Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop, ISAF/ISIF/PFM 2015 - Singapore, Singapore
Duration: May 24 2015May 27 2015

Publication series

Name2015 Joint IEEE International Symposium on the Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop, ISAF/ISIF/PFM 2015

Other

OtherJoint IEEE International Symposium on the Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop, ISAF/ISIF/PFM 2015
Country/TerritorySingapore
CitySingapore
Period5/24/155/27/15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Instrumentation

Keywords

  • BNT
  • controlled atmosphere
  • copper electrode
  • lead-free
  • low temperature sintering

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