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    Phase compositions of self reinforcement Al2O 3/CaAl12O19 composite using X-ray diffraction data and rietveld technique

    Access Status
    Fulltext not available
    Authors
    Asmi, D.
    Low, It Meng
    O'Connor, B.
    Date
    2008
    Type
    Conference Paper
    
    Metadata
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    Citation
    Asmi, D. and Low, I.M. and O'Connor, B. 2008. Phase compositions of self reinforcement Al2O 3/CaAl12O19 composite using X-ray diffraction data and rietveld technique, pp. 168-171.
    Source Title
    AIP Conference Proceedings
    DOI
    10.1063/1.2906057
    ISBN
    9780735405080
    School
    Department of Physics and Astronomy
    URI
    http://hdl.handle.net/20.500.11937/43178
    Collection
    • Curtin Research Publications
    Abstract

    The analysis of x-ray diffraction (XRD) patterns by the Rietveld technique was tested to the quantitatively phase compositions of self reinforcement Al2O3/CaAl12O19 composite. Room-temperature XRD patterns revealed that a-Al2O3 was the only phase presence in the CA0 sample, whereas the a-Al 2O3 and CaAl12O19 phases were found for CA5, CA15, CA30, and CA50 samples. The peak intensity of CA6 in the self reinforcement Al2O3/CaAl12O 19 composites increased in proportion with increase in CaAl 12O19 content in contrast to a-Al2O 3. The diffraction patterns for CA100 sample shows minor traces of a-Al2O3 even in relatively low peak intensity. It is suggesting that the in-situ reaction sintering of raw materials were not react completely to form 100 wt% CaAl12O19 at temperature 1650°C. Quantitative phase compositions of self reinforcement Al 2O3/CaAl12O19 composites by Rietveld analysis with XRD data has been well demonstrated. The results showed that the GOF values are relatively low and the fluctuation in the difference plots shows a reasonable fit between the observed and the calculated plot. © 2008 American Institute of Physics.

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