Abstract
In the present work, the formation of the Al70Cu20Fe10 icosahedral phase by mechanical alloying the elemental powders in a high-energy planetary mill was investigated by X-ray diffraction and Mössbauer spectroscopy. It was verified that the sample milled for 80 h produces an icosahedral phase besides Al(Cu, Fe) solid solution (β-phase) and Al2Cu intermetallic phase. The Mössbauer spectrum for this sample was fitted with a distribution of quadrupole splitting, a doublet and a sextet, revealing the presence of the icosahedral phase, β-phase and α-Fe, respectively. This compound is not a good hydrogen storage. The results of the X-ray diffraction and Mössbauer spectroscopy of the sample milled for 40 h and annealed at 623°C for 16 h shows essentially single i-phase and tetragonal Al7Cu2 Fe phase.
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de Medeiros, S.N., Cadore, S., Pereira, H.A. et al. Quasicrystalline phase formation in the mechanically alloyed Al70Cu20Fe10 . Hyperfine Interact 195, 213–217 (2010). https://doi.org/10.1007/s10751-009-0122-6
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DOI: https://doi.org/10.1007/s10751-009-0122-6