Glycothermal process for barium magnesium tantalate nanopowders synthesis

Amar Badrakh, Hyun Sig Kil, Dae Young Lim, Seung Beom Cho, Sahn Nahm, Richard E. Riman

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Barium magnesium tantalate Ba(Mg1/3Ta2/3)O3 (BMT) nanopowders were synthesized at a low temperature of 220°C through glycothermal reaction by using Ba(OH)2·8H2O, Mg(NO3)·6H2O, and TaCl5 as precursors and 1,4-butanediol as solvent. It is demonstrated that higher synthesis temperatures and co-precipitation of magnesium and tantalum improve the incorporation of magnesium into BMT nanopowders under glycothermal treatment and produce a homogeneous, stoichiometric powder. The glycothermally derived BMT nanopowders are very reactive and provide a high-density sintered body with 97.1% of theoretical density at a low temperature of 1350°C. The average grain size of the sintered ceramics was 1.2±0.2μm and relatively uniform in comparison with the ceramics sintered with powders produced from the conventional method.

Original languageEnglish
Pages (from-to)2319-2329
Number of pages11
JournalJournal of the European Ceramic Society
Volume31
Issue number13
DOIs
Publication statusPublished - 2011 Nov

Keywords

  • A. Powders-chemical preparation
  • A. Sintering
  • D. Perovskites
  • D. Tantalates
  • Glycothermal

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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