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Fe3Si–Al2O3 nanocomposite has been prepared by mechanical alloying of Fe3O4, Al and Si powder mixture and heat treatment. Powder XRD patterns, TEM and HRTEM images and XPS spectra revealed the crystalline transformations from raw materials to Fe3Si–Al2O3 nanocomposite during mechanical alloying and annealing and from Fe to Fe3Si to a mixture of Fe3Si, Fe5Si3 and FeSi with the proportion of Si in raw...
Metal silicides are complicated materials due to the complex phase behavior between metals and silicon and the complex stoichiometries and structures of their resulting compounds. Iron silicide nanoparticles with various phases have been successfully controlled and synthesized via thermal annealing of a core–shell structure Fe–FeSi2 sample at atmospheric pressure under Ar and H2 atmospheres. The results...
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