Spherical shape PbO-B2O3-SiO2 glass powders prepared by flame spray pyrolysis

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

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Micron-sized PbO-B2O3-SiO2 glass powders were directly prepared by high temperature flame spray pyrolysis. The flow rates of fuel and carrier gas in the flame spray pyrolysis were critical to the control of morphologies of PbO-B2O3-SiO2 glass powders. The optimum flow rate of fuel gas to prepare the PbO-B 2O3-SiO2 glass powders with spherical shape and micron-size was 20 L/min. The powders prepared at low flow rates of carrier gas had bimodal size distributions with nanometer and micron sizes. The number of the nanometer size powders increased with decreasing the flow rate of carrier gas. When the flow rate of carrier gas was 30 L/min, the prepared powders had spherical shape and micron size. The transmittances of the dielectric layers were higher than 90% regardless of the flow rates of carrier gas when the dielectric layers were sintered at temperatures between 520 and 580° C.

Original languageEnglish
Pages (from-to)483-486
Number of pages4
JournalJournal of the Ceramic Society of Japan
Issue number1344
Publication statusPublished - 2007 Aug
Externally publishedYes


  • Dielectric material
  • Flame spray pyrolysis
  • Glass powder
  • Spray pyrolysis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry


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