Phase evolution of solid-state BaTiO3 powder prepared by different starting BaCO3

Ting Tai Lee, Chi Yuen Huang, Che Yuan Chang, I. Kuan Cheng, Ching Li Hu, Che Yi Su, Chun Te Lee, Masayuki Fujimoto

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Abstract

Two different specific surface area of starting BaCO3, 10 and 30 m2/g, are used to prepare solid-state BaTiO3 powder. Pure tetragonal BaTiO3 was obtained at a lower calcination temperature with smaller BaCO3, and the kinetic calculations of activation energy also agree with it. A clear, thin, and nano-sized cubic BaTiO3 clusters on TiO2 particles were also observed. A narrower particle size distribution of BaTiO3 powder (350 nm) was obtained from 30 m2/g of starting BaCO3 at 1000°C. After sintering with reducing atmosphere, the ceramics with potential of X8R or X7R specifications and a clear core–shell microstructure were obtained in this study.

Original languageEnglish
Pages (from-to)E134-E144
JournalInternational Journal of Applied Ceramic Technology
Volume10
DOIs
Publication statusPublished - 2013 Sep 1

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Marketing
  • Materials Chemistry

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