(Bi1/2Na1/2)TiO3-(Bi1/2K1/2)TiO3-(Bi1/2Li1/2)TiO3-BaTiO3lead-free ceramic fibres fabricated by a powder-based extrusion method

S. H. Choy, H. K. Li, Kwok Ho Lam, H. L.W. Chan, C. L. Choy

Research output: Journal article publicationConference articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Lead-free bismuth sodium potassium lithium titanatebarium titanate [0.885 (Bi1/2Na1/2)TiO3-0.05(Bi1/2K1/2)TiO3-0.015(Bi1/2Li1/2) TiO3-0.05BaTiO3, BNKLBT-1.5] fibres have been fabricated by a powder-based extrusion method. The ceramic fibres with 400 μm diameter were well-crystallized after being calcined at 800°C and sintered at 1170°C. After being poled, the electromechanical coupling coefficient k33of the fibre is 0.55 while other properties are comparable to those a ceramic disc. The BNKLNT ceramic fibres prepared by the powder-based extrusion method have good piezoelectric and ferroelectric properties and have potential to replace lead zirconate titanate (PZT) fibres in various device applications.
Original languageEnglish
Pages (from-to)85-92
Number of pages8
JournalFerroelectrics
Volume358
Issue number1 PART 4
DOIs
Publication statusPublished - 1 Dec 2007
Event5th Asian Meeting on Ferroelectricity, AMF-5 - Noda, Japan
Duration: 3 Sep 20067 Sep 2006

Keywords

  • Ceramic fibres
  • Lead-free ceramics
  • Piezoelectric properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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