Characteristics of the glass powders with low Pb content directly prepared by spray pyrolysis

You Na Ko, Hye Young Koo, Dae Soo Jung, Jung Hyun Kim, Yun Chan Kang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Fine size glass powders with a 21.5 mol% PbO-50.5 mol% B2O 3-16 mol% SiO2-12 mol% BaO-0.5 mol% CuO composition were directly prepared by spray pyrolysis. The glass powders prepared at 1000 °C had spherical shape and dense inner structure. The glass transition temperature (Tg) of the glass powders with the mean size of 0.84μm was 493 °C. The number of voids in fired dielectric layers decreased with increasing the preparation temperature of the glass powders, and the dielectric layer formed from the glass powders prepared by spray pyrolysis at a temperature of 1000 °C had no voids inside the layer. The transmittances of the dielectric layer formed from the glass powders prepared at a temperature of 1000 °C were higher than 70% within the visible range. The mean sizes of the powders were changed from 0.36 to 1.0μm when the concentrations of the spray solutions were changed from 0.03 to 1M. The dielectric layers formed from the glass powders with small sizes had higher transmittances than those formed from the glass powders with large sizes.

Original languageEnglish
Pages (from-to)158-162
Number of pages5
JournalJournal of Alloys and Compounds
Volume502
Issue number1
DOIs
Publication statusPublished - 2010 Jul 16
Externally publishedYes

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Keywords

  • Chemical synthesis
  • Gas-solid reaction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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