Preparation and characterisation of finegrained Barium lead titanate ceramics by spark plasma sintering technique

V. R. Mudinepalli, F. Leng, W. C. Lin, B. S. Murty

Research output: Contribution to journalArticle

Abstract

Barium lead titanate ferroelectric ceramic is a promising material for electronic devices at high frequency and high temperatures. These fine-grained ceramics were obtained at a low sintering temperature of 900°C within a short sintering time by means of a new sintering method - spark plasma sintering (SPS). The ceramics are highly densified to >99% of the theoretical X-ray density with homogeneous microstructures, signifying that the SPS process is effective for the densifying of compacts and the inhibition of exaggerated grain growth. Temperature dependence of dielectric constant of SPS pellets shows three times higher than the conventional sintering (CS) Ba0.8Pb0.2TiO3 (BPT) pellet. The variations in properties between SPS and CS materials are mainly because of the differences of the resultant microstructures, especially grain size, of the ceramics.

Original languageEnglish
Pages (from-to)81-85
Number of pages5
JournalMaterials Research Innovations
Volume20
Issue number2
DOIs
Publication statusPublished - 2016 Jan 1

Keywords

  • Barium titanate
  • Dielectric properties
  • Spark plasma sintering
  • X-ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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