Abstract
The room temperature Mössbauer spectra of 57Fe were measured for Ni 1− x Fe x solid solutions with x in the range 0.01≤ x≤0.10. The obtained data were analysed in terms of short range order parameter (SRO) and the binding energy E b between two iron atoms in the studied materials using the extended Hrynkiewicz–Królas idea. It was found that the binding energy is positive or Fe atoms interact repulsively. The extrapolated value of E b for x=0 was used for computation of enthalpy of solution of Fe in Ni. Finally the values of enthalpies of solution were used to predict the mixing enthalpy curve for the Fe–Ni solid solutions. The results were compared with corresponding value given in the literature, which was calculated theoretically using DFT techniques, as well as with the value obtained from experimental calorimetric data and resulting from the cellular atomic model of alloys by Miedema.
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