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    Effect of Grain Size and Controlled Atmospheres on the Thermal Stability of Aluminium Titanate

    155343_155343.pdf (201.1Kb)
    Access Status
    Open access
    Authors
    Low, It-Meng
    Oo, Zeya
    Date
    2010
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Low, I.M. and Oo, Z. 2010. Effect of Grain Size and Controlled Atmospheres on the Thermal Stability of Aluminium Titanate. AIP Conference Proceedings. 1202 (1): pp. 27-31.
    Source Title
    AIP Conference Proceedings
    DOI
    10.1063/1.3295604
    ISSN
    0094-243X
    School
    Department of Imaging and Applied Physics
    Remarks

    Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Low, I.M. and Oo, Z. 2010. Effect of Grain Size and Controlled Atmospheres on the Thermal Stability of Aluminium Titanate. AIP Conference Proceedings. 1202 (1): pp. 27-31 and may be found at http://dx.doi.org/10.1063/1.3295604

    URI
    http://hdl.handle.net/20.500.11937/28355
    Collection
    • Curtin Research Publications
    Abstract

    Aluminium titanate (Al2TiO5) is an excellent refractory and thermal shock resistant material due to 25 its relatively low thermal expansion coefficient and high melting point. However, Al2TiO5 is only 25 thermodynamically stable above 1280° C and undergoes a eutectoid-like decomposition to α-Al2O3 and TiO2 (rutile) at the temperature range of 900-1280° C. Hitherto, the effect of grain size and 2 atmosphere on the kinetics of decomposition is poorly understood but experimental evidences suggest a nucleation and growth controlled process. In this paper, we describe the role of grain size and controlled atmospheres on the thermal stability of Al2TiO5. In particular, the effects of grain size 25 and oxygen partial pressure on the rate of isothermal decomposition of Al2TiO at 1100° C have been 25 investigated. Results show that the thermal stability of Al0TiO5 increases as the grain size and 25 oxygen partial pressure increases. However, both the on-set temperature nor the temperature range of Al2TiO5 thermal decomposition are not affected by the variation of oxygen partial pressure 25 present in the furnace atmosphere.

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