Abstract
The structural-phase state of quasicrystalline coatings of the Al-Cu-Fe alloy produced under different thermal conditions of plasma spraying (different contact temperatures T k of the substrate) has been investigated. It has been shown that sprayed coatings are heterophase with the dominant content of the icosahedral ψ and cubic β phases, the formation and fractional ratio of which depend on spraying conditions. The distribution of probabilities P(QS) of quadrupole splitting in experimental γ-resonance spectra has been analyzed. The dependence of hyperfine interaction parameters (QS, A) on spraying conditions of the coating has been established. Five nonequivalent positions of resonant iron atoms, the appearance and filling of which are determined by spraying conditions, have been revealed.
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Original Russian Text © A.A. Lepeshev, O.A. Bayukov, E.A. Rozhkova, I.V. Karpov, A.V. Ushakov, L.Yu. Fedorov, 2015, published in Fizika Tverdogo Tela, 2015, Vol. 57, No. 2, pp. 243–247.
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Lepeshev, A.A., Bayukov, O.A., Rozhkova, E.A. et al. Modification of the phase composition and structure of the quasicrystalline Al-Cu-Fe alloy prepared by plasma spraying. Phys. Solid State 57, 255–259 (2015). https://doi.org/10.1134/S1063783415020249
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DOI: https://doi.org/10.1134/S1063783415020249