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.
Original language | English |
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Pages (from-to) | 3499-3503 |
Number of pages | 5 |
Journal | Journal of Materials Research |
Volume | 13 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec 1998 |