Sintering properties of trivalent cation-doped barium zirconate at 1600°C

Susumu Imashuku, T. Uda, Y. Awakura

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Typical microstructures of BaZr0.85 Y0.15 O3-δ sintered for 4-24 h at 1600°C were mixtures of larger and smaller grains. Well-grown and homogeneous grains of BaZr0.85 Y0.15 O3-δ were observed by adding an extra amount of barium oxide from stoichiometric composition or extending the sintering time to 100 h. Such an extra amount of barium oxide is expected to decrease chemical stability in a wet atmosphere, and we observed the precipitation of yttria after 100 h sintering. However, we did not meet such difficulties in sintering BaZr0.85 Sc0.15 O3-δ. Large and uniform grains were observed in BaZr0.85 Sc0.15 O3-δ by sintering for 24 h.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume10
Issue number10
DOIs
Publication statusPublished - 2007 Aug 17
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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