Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1516102 | Journal of Physics and Chemistry of Solids | 2013 | 8 Pages |
Abstract
The methods of Mössbauer spectroscopy at 57Fe nuclei were used to study changes in structure-phase states of the Be-Fe-Be three-layer system subjected to isothermal annealing, irradiation with helium ions of energies up to 40 keV followed by a series of isochronous annealings. Upon the consequent isothermal annealings at 650 °С, the samples represented a layered system. Its bulk was represented by α-Fe(Be) solid solution and near-surface areas at both sides were mainly represented by FeBe2 intermetallic compound. Irradiation of the near-surface layers resulted in their local enrichment with beryllium atoms. The rate of enrichment depended on the dose, and the dose varied from 1Ã1021 up to 2Ã1022 ion/m2. Following consequent 2-hour long isochronous annealings at temperatures from 200 to 650 °С resulted in almost complete recovery of the local concentration of the components and the structure in the irradiated near-surface layers.
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Authors
K.K. Kadyrzhanov, Ð.F. Vereshchak, I.Ð. Manakova, Ð.N. Ozernoy, V.S. Rusakov,