An enthalpy of solution of rhenium in iron studied by 57Fe Mössbauer spectroscopy

The room temperature Mössbauer spectra of 57Fe were measured for iron-based solid solutions Fe1 − xRex, with x in the range 0.01 ≤ x ≤ 0.05. The obtained data were analysed in terms of the binding energy Eb between two rhenium atoms in the Fe-Re system. The extrapolated value of Eb for x = 0 was used for computation of enthalpy of solution of rhenium in iron. The result was compared with that resulting from the cellular atomic model of alloys by Miedema. The comparison shows that our findings are in a qualitative agreement with the Miedema’s model predictions.