Synthesis and properties of copper and samarium doped yttria-bismuth oxide powders and membranes

Y. Zeng, Y. S. Lin

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Powders of Bi1.5 Y0.5-yCuyO3-δ (BYC) and Bi1.5 Y0.3Sm0.2. O3 in the fluorite phase structure were prepared by the citrate method. The chemical reactions involved in the synthesis of these powders were proposed and verified experimentally. Dense BYC and BYS membranes were prepared from the powders by the press and sintering method. The optimum conditions for powder preparation as well as for membrane fabrication were determined in this study with the aid of various characterization methods. The BYC and BYS membranes were gas-tight to helium. These doped bismuth-yttrium (BY) oxide membranes show similar ionic conductivity but much higher oxygen permeability (electronic conductivity) as compared to the undoped BY membrane.

Original languageEnglish (US)
Pages (from-to)1271-1276
Number of pages6
JournalJournal of Materials Science
Volume36
Issue number5
DOIs
StatePublished - Mar 1 2001
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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