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

Published online by Cambridge University Press:  31 January 2011

P. Millet  and
T. Hwang
P. Millet*
Affiliation:
Department of Applied Mathematics and Electronic Materials Engineering, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200, Australia
T. Hwang
Affiliation:
Department of Electronic Materials Engineering, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200, Australia
*
a)Author to whom correspondence should be addressed. Present address: Centre d'Elaboration de Matiriaux et d'Etudes Structurales, CNRS, B.P. 4347, 29 rue Jeanne Marvig, 31055 Toulouse Cedex, France.
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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.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 4 , April 1996 , pp. 955 - 961
Copyright
Copyright © Materials Research Society 1996

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References

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