Sintering behavior of La2O3-B2O3-TiO2 glass powders prepared by spray pyrolysis for low temperature co-fired ceramics

Dae Soo Jung, Yun Chan Kang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Fine-sized La2O3-B2O3-TiO2 glass powders with spherical shape were directly prepared by spray pyrolysis at a temperature of 1500 °C. The optimum flow rate of the carrier gas to prepare the glass powders with dense inner structure and fine size by complete melting was 10 L/min. The ratio of La/Ti was identified to be 2.06:1, which was close to the original starting ratio of La/Ti in mixture of the spray solution. The Tg and Tc of the powders were 614 and 718 °C. The crystal structures within the powders were observed from the sintered disc at 630 °C. The mean sizes of the powders changed from 0.24 to 0.71 μm when the concentrations of the spray solution were changed from 0.025 to 0.5 M. The BET surface areas of the powders changed from 4.4 to 1.6 m2/g. The grain sizes of the sintered discs increased with increasing the sintering temperatures. The main crystal structure of the sintered discs was LaBO3.

Original languageEnglish
Pages (from-to)1829-1835
Number of pages7
JournalCeramics International
Volume35
Issue number5
DOIs
Publication statusPublished - 2009 Jul 1

Keywords

  • A. Powders-chemical preparation
  • A. Powders-gas phase reaction
  • D. Glass ceramics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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