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Mechanochemical reactions in the system FeTiO3–Si

Published online by Cambridge University Press:  31 January 2011

Ying Chen  and
J. S. Williams
Ying Chen
Affiliation:
Department of Electronic Materials and Engineering, Research School of Physical Sciences and Engineering, The Australian National University, ACT 0200, Australia
J. S. Williams
Affiliation:
Department of Electronic Materials and Engineering, Research School of Physical Sciences and Engineering, The Australian National University, ACT 0200, Australia
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Abstract

Mechanochemical reactions in the system FeTiO3 –Si have been investigated as functions of the powder composition and milling conditions, using x-ray diffraction and thermal analyses. Reduction reactions of FeTiO3 by Si were observed during room-temperature milling with the formation of α–Fe, amorphous SiOx, nanocrystalline TiO2, or intermetallic compounds, depending on the Si content. The mechanochemical reaction process consists of a mechanical activation stage and a reaction stage. Higher milling intensity leads to a shorter activation step and a higher reaction rate.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 12 , December 1998 , pp. 3499 - 3503
Copyright
Copyright © Materials Research Society 1998

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