Abstract
Mechanically induced chemical reactions between FeTiO3 and silicon have been examined using X-ray diffraction and thermal processing. Reduction of FeTiO3 by Si during milling was observed with the formation of elemental iron and TiO2 or metal silicides, depending on the Si content. An amorphous phase was also present and was probably composed of silicon and oxygen. The reaction occurred in two stages, activation followed by reaction, the length of the activation stage was affected by the milling intensity with a higher intensity giving a shorter activation time. This is attributed to the necessity to attain a critical level of internal energy (in the form of defects, grain boundaries, lattice strain etc.) prior to the onset of reaction.
Original language | English |
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Pages (from-to) | 303-307 |
Number of pages | 5 |
Journal | Journal of Alloys and Compounds |
Volume | 274 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 26 Jun 1998 |