Characteristics of ZnO-B2O3-CaO-Na2O-P2O5 glass powders prepared by spray pyrolysis

Seung Kwon Hong, Dae Soo Jung, Jung Sang Cho, Yun Chan Kang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Fine-sized ZnO-B2O3-CaO-Na2O-P2O5 glass powders with spherical shape were directly prepared by high temperature spray pyrolysis. The ZnO-B2O3-CaO-Na2O-P2O5 powders prepared by spray pyrolysis at temperatures above 1200 °C had broad peaks at around 30° in the XRD patterns. The glass transition temperatures (Tg) of the glass powders obtained by spray pyrolysis at preparation temperatures between 900 °C and 1400 °C were near 480 °C regardless of the preparation temperatures. The dielectric layers formed from the glass powders prepared by spray pyrolysis at preparation temperatures above 1300 °C had clean surface and dense inner structure at the firing temperature of 580 °C. The transmittance of the dielectric layer formed from the glass powders obtained by spray pyrolysis at preparation temperature of 1400 °C was 90% at the firing temperature of 580 °C, in which the thickness of the dielectric layer was 13 μm. The UV cutoff edges gradually shift towards longer wavelength with increasing the preparation temperature of glass powders and the firing temperature of dielectric layers.

Original languageEnglish
Pages (from-to)3012-3018
Number of pages7
JournalJournal of Non-Crystalline Solids
Volume354
Issue number26
DOIs
Publication statusPublished - 2008 May 15
Externally publishedYes

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Keywords

  • Phosphates
  • Powders

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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