Characteristics of ZnO-B2O3-SiO2 glass powders prepared by spray pyrolysis as densification promoter for BaTiO3 ceramics

Jang Heui Yi, You Na Ko, Hye Young Koo, Dae Soo Jung, Yun Chan Kang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Spherical shape ZnO-B2O3-SiO2 glass powders were prepared by spray pyrolysis. The optimum preparation temperature is 1500 °C when the flow rate of the carrier gas is 5 Lminute-1. The mean size and geometric standard deviation of the glass powders is 0.78 μm and 1.38. The glass transition temperature of the glass powders is 489.1 °C. Melting of the ZnO-B2O3-SiO2 glass powders occurs at 500 °C. On the other hand, some of the glass powders maintain a spherical morphology after firing at 500 °C. Complete melting of the glass powders occurs at firing temperatures of 600 and 700 °C, in which crystalline structures are observed. The dielectric constant of the BaTiO3 pellet with 3 wt.% ZnO-B2O3-SiO2 glass is 2682 at a firing temperature of 1000 °C.

Original languageEnglish
Pages (from-to)122-125
Number of pages4
JournalJournal of Ceramic Processing Research
Volume12
Issue number2
Publication statusPublished - 2011

Keywords

  • Barium titanate
  • Dielectric material
  • Glass powder
  • Spray pyrolysis

ASJC Scopus subject areas

  • Ceramics and Composites

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