Spherical shape BaNd2Ti5O14 powders prepared by spray pyrolysis

Jin Man Han, Dae Soo Jung, Jung Sang Cho, Yun Chan Kang

Research output: Contribution to journalArticle

Abstract

Spherical shape BaNd2Ti5O14 (BNT) powders were prepared by post-treatment of the precursor powders obtained by spray pyrolysis. The mean size and geometric standard deviation of the powders prepared at a low flow rate of the carrier gas as 5 Lmin-1 were 0.73μm and 1.30. The powders post-treated at a temperature of 1000°C had a single phase of BNT without impurity peaks. The BNT powders had similar compositions to that of the spray solution. Necking between the powders occurred at a sintering temperature of 1100°C. The BNT powders with spherical shape changed to the rod-like crystals after sintering at temperatures above 1200°C. The aspect ratio of the rod-like crystals increased with increasing the sintering temperatures.

Original languageEnglish
Pages (from-to)1289-1294
Number of pages6
JournalJournal of the Ceramic Society of Japan
Volume116
Issue number1360
DOIs
Publication statusPublished - 2008 Jan 1
Externally publishedYes

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Spray pyrolysis
Powders
pyrolysis
sprayers
sintering
Sintering
rods
Temperature
Crystals
temperature
crystals
aspect ratio
Aspect ratio
standard deviation
flow velocity
Gases
Flow rate
Impurities
impurities
Chemical analysis

Keywords

  • Dielectric material
  • Spray pyrolysis
  • Titanate

ASJC Scopus subject areas

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

Cite this

Spherical shape BaNd2Ti5O14 powders prepared by spray pyrolysis. / Han, Jin Man; Jung, Dae Soo; Cho, Jung Sang; Kang, Yun Chan.

In: Journal of the Ceramic Society of Japan, Vol. 116, No. 1360, 01.01.2008, p. 1289-1294.

Research output: Contribution to journalArticle

Han, Jin Man ; Jung, Dae Soo ; Cho, Jung Sang ; Kang, Yun Chan. / Spherical shape BaNd2Ti5O14 powders prepared by spray pyrolysis. In: Journal of the Ceramic Society of Japan. 2008 ; Vol. 116, No. 1360. pp. 1289-1294.
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