Microstructure effect on the oxygen permeation through Ba 0.95La0.05FeO3-δ membranes fabricated by different methods

Ken Watanabe, Subaru Ninomiya, Masayoshi Yuasa, Tetsuya Kida, Noboru Yamazoe, Hajime Haneda, Kengo Shimanoe

研究成果: Contribution to journalArticle査読

17 被引用数 (Scopus)


In order to investigate the effect of the microstructure on the oxygen permeation in Ba0.95La0.05FeO3-δ membranes, three different methods such as solid-state reaction, nitrate and acetate decomposition (NAD), and amorphous malic acid precursor (AMP) methods were used to fabricate membranes with different grain sizes. The grain size of the membranes was successfully controlled from 35 to 829 μm2 via sintering at 1175°-1275°C. The oxygen permeation fluxes through the Ba0.95La0.05FeO3-δ membranes increased with a decrease in the grain size. The AMP method, using malic acid as a complexing agent, produced a membrane having the highest oxygen permeability (3.10 cm3·(min·cm2)-1 at 930°C) and the smallest grain size. The results obtained again confirmed the significant importance of microstructure control in designing high-performance oxygen permeable membranes.

ジャーナルJournal of the American Ceramic Society
出版ステータス出版済み - 7 1 2010

All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 地質学
  • 地球化学および岩石学
  • 材料化学


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