Abstract
The room temperature Mössbauer spectra of 57Fe were measured for iron-based solid solutions Fe1−xCrx with x in the range 0.01≤x≤0.05. The obtained data were analysed in terms of the binding energy Eb between two chromium atoms in the studied materials using the extended Hrynkiewicz–Królas idea. It was found that the energy is positive or Cr atoms interact repulsively. The extrapolated value of Eb for x=0 was used for computation of an enthalpy of solution of Cr in Fe. The result was compared with corresponding data derived from calorimetric measurements and resulting from the cellular atomic model of alloys by Miedema as well as with the proper values given in the literature which were calculated on the basis of density functional theory (DFT). The comparison shows that our findings are in good agreement with the recent DFT computations for ferromagnetic Fe–Cr alloys.
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