Mechanochemical reduction of FeTiO3 by Si

N. J. Welham*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)

    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 languageEnglish
    Pages (from-to)303-307
    Number of pages5
    JournalJournal of Alloys and Compounds
    Volume274
    Issue number1-2
    DOIs
    Publication statusPublished - 26 Jun 1998

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