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A Novel X-ray Micro-diffraction Approach for Structural Characterization of Trace Quantities of Secondary Phases in Al2O3-C/Fe System

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Abstract

Sessile drop investigations were carried out on Al2O3-12.9C refractory substrates in contact with molten iron at 1823 K (1550 °C) for 30 minutes. Chemical reactions in this system resulted in the generation of trace quantities of ferro-aluminum alloys. An X-ray micro-diffraction approach was developed to localize and structurally identify these phases based on epitaxial mapping using X’Pert materials research Diffractometer. Using this technique, a small peak in the standard XRD pattern could be enhanced to four diffraction peaks with much higher intensities, leading to a much improved indexing of diffraction peaks and structural characterization of the reaction product.

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The financial support for this research was provided by the Australian Research Council. We acknowledge technical support from Mark Wainwright Analytical Centre Electron Microscope and Solid State and Elemental Analysis Units of the University of New South Wales.

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Authors and Affiliations

  1. Centre for Sustainable Materials Research and Technology, School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia

    M. Ikram-ul-Haq (Research Associate), R. Khanna (Associate Professor) & V. Sahajwalla (Professor)

  2. The UNSW Analytical Centre, The University of New South Wales, Sydney, NSW, 2052, Australia

    Y. Wang (Scientific Officer)

Authors
  1. M. Ikram-ul-Haq
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  2. R. Khanna
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  3. Y. Wang
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  4. V. Sahajwalla
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Corresponding author

Correspondence to R. Khanna.

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Manuscript submitted July 31, 2014.

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Ikram-ul-Haq, M., Khanna, R., Wang, Y. et al. A Novel X-ray Micro-diffraction Approach for Structural Characterization of Trace Quantities of Secondary Phases in Al2O3-C/Fe System. Metall Mater Trans B 45, 1970–1973 (2014). https://doi.org/10.1007/s11663-014-0201-1

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  • DOI: https://doi.org/10.1007/s11663-014-0201-1

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