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Fabrication of TiB2 and TiB2/FeB composites by mechanically activated borothermic reduction of ilmenite

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Abstract

TiB2 and TiB2/FeB composites have been formed at temperatures below 1000 °C, directly from ilmenite sand by reaction with amorphous boron. The structural transformations occurring during high-energy mechanical milling pretreatment and subsequent annealing of different mixtures of the constituents have been studied. On heating at temperature below 800 °C, complete borothermic reduction of the ilmenite structure is accomplished. The mixture so obtained with an ilmenite-boron ratio equal to 1/6 undergoes a sequence of reactions on further heating to form TiB2, FeB, and the amorphous phase B2O2.

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Author notes

  1. P. Millet

    Present address: Centre d’Elaboration de Matiriaux et d’Etudes Structurales, CNRS, B.P. 4347, 29 rue Jeanne Marvig, Toulouse Cedex, 31055, France

Authors and Affiliations

  1. Department of Applied Mathematics and Electronic Materials Engineering, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT, 0200, Australia

    P. Millet

  2. Department of Electronic Materials Engineering, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT, 0200, Australia

    T. Hwang

Authors
  1. P. Millet
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  2. T. Hwang
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Millet, P., Hwang, T. Fabrication of TiB2 and TiB2/FeB composites by mechanically activated borothermic reduction of ilmenite. Journal of Materials Research 11, 955–961 (1996). https://doi.org/10.1557/JMR.1996.0120

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  • DOI: https://doi.org/10.1557/JMR.1996.0120

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