Mechanochemical behavior of Fe sub(2)O sub(3)-Al-Fe powder mixtures to produce Fe sub(3)Al-Al sub(2)O sub(3) nanocomposite powder

Mechanical treatment of Fe sub(2)O sub(3), Al and Fe powder mixtures was carried out in a high energy ball mill to synthesize Fe sub(3)Al-Al sub(2)O sub(3) intermetallic matrix nanocomposite. Different compositions including 3Fe + Al, Fe sub(2)O sub(3) + 2Al, 3Fe sub(2)O sub(3) + 8Al and Fe sub(2)O...

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Bibliographic Details
Published in:Journal of materials science 2008-01, Vol.43 (1), p.132-138
Main Authors: Khodaei, M, Enayati, M H, Karimzadeh, F
Format: Article
Language:English
Subjects:
Aluminum
Ferrous alloys
Intermetallic compounds
Intermetallics
Iron
Iron aluminides
Nanomaterials
Nanostructure
Scanning electron microscopy
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Summary:Mechanical treatment of Fe sub(2)O sub(3), Al and Fe powder mixtures was carried out in a high energy ball mill to synthesize Fe sub(3)Al-Al sub(2)O sub(3) intermetallic matrix nanocomposite. Different compositions including 3Fe + Al, Fe sub(2)O sub(3) + 2Al, 3Fe sub(2)O sub(3) + 8Al and Fe sub(2)O sub(3) + 3Al+Fe were chosen in this study. Phase development and structural changes occurring during ball milling were investigated by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The results showed that during MA, Fe sub(2)O sub(3), Al, and Fe react to give a nanocrystalline Fe sub(3)Al intermetallic compound matrix. The presence of pure Fe in initial powder mixture changed the modality of mechanochemical process from sudden to gradual reaction. The Fe sub(3)Al-Al sub(2)O sub(3) compound had a finer microstructure and particles size compared to the Fe sub(3)Al compound.
ISSN:0022-2461
DOI:10.1007/s10853-007-2123-7