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    Influence of high-energy ball milling of the starting powder on the sintering; microstructure and oxygen permeability of Ba0.5Sr0.5Co0.5Fe0.5O3-d membranes

    Access Status
    Fulltext not available
    Authors
    Gao, D.
    Zhao, J.
    Zhou, W.
    Ran, R.
    Shao, Zongping
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Gao, D. and Zhao, J. and Zhou, W. and Ran, R. and Shao, Z. 2011. Influence of high-energy ball milling of the starting powder on the sintering; microstructure and oxygen permeability of Ba0.5Sr0.5Co0.5Fe0.5O3-d membranes. Journal of Membrane Science. 366 (1-2): pp. 203-211.
    Source Title
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2010.10.001
    ISSN
    0376-7388
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/33250
    Collection
    • Curtin Research Publications
    Abstract

    The effect of high-energy ball milling (HEBM) of the starting material of crystalline Ba0.5Sr0.5Co0.5Fe0.5O3-d (BSCF) powders on the sintering and oxygen permeability of the corresponding ceramic membrane was systematically investigated. Two different methods of dry milling and wet milling in a liquid alcohol medium were investigated along with three ball milling times (1, 2 and 3h), two different types of starting powders, and three different sintering temperatures (1000, 1050 and 1100°C). XRD, SEM and oxygen permeation measurements were performed on as-prepared membranes. The experimental results showed that HEBM is an effective way to improve the sintering, microstructure and oxygen permeability of BSCF membranes. By optimizing the HEBM process, the relative density of BSCF membranes improved significantly; as a result, the oxygen permeation flux of BSCF membranes improved by about 20% in comparison to BSCF membranes whose starting powders were not ball milled. Thus, HEBM is a promising way to increase the performance of BSCF membranes for oxygen separation. © 2010 Elsevier B.V.

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