An Enthalpy of Solution of Cobalt and Nickel in Iron Studied with ^{57}Fe Mössbauer Spectroscopy

• Authors: R. Idczak , R. Konieczny , Ż. Konieczna , J. Chojcan
• Languages of publication: EN

Abstracts

EN

The room temperature Mössbauer spectra of ^{57}Fe were measured for iron-based solid solutions Fe_{1-x}Co_{x} and Fe_{1-x}Ni_{x} with x in the range 0.01 ≤ x ≤ 0.05. The obtained data were analysed in terms of the binding energy E_{b} between two Co or Ni atoms in the studied materials using the extended Hrynkiewicz-Królas idea. It was found that the energy is positive or the non-iron atoms interact repulsively. The extrapolated value of E_{b} for x=0 was used for computation of the enthalpy of solution of cobalt and nickel in iron. The results were compared with our previous Mössbauer spectroscopy findings, the values resulting from the Miedema's model of alloys and the data derived from the enthalpy of formation of the Fe-Co and Fe-Ni systems, obtained with calorimetric methods. The comparison shows that the present results are in a qualitative agreement with the Miedema's model predictions and calorimetric measurements but they are at variance with the previous Mössbauer spectroscopy findings.

Keywords

EN

76.80.+y; 82.60.Lf; 65.40.G-

Discipline

• 76.80.+y: Mössbauer effect; other γ-ray spectroscopy(see also 33.45.+x Mössbauer spectra—in atomic and molecular physics; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)
• 82.60.Lf: Thermodynamics of solutions
• 65.40.G-: Other thermodynamical quantities(for magnetocaloric effect, see 75.30.Sg)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 119
• Issue: 1
• Pages: 37-40

Dates

published

2011-01

Contributors

author

R. Idczak

• Institute of Experimental Physics, University of Wroclaw, pl. M. Borna 9, 50-204 Wrocław, Poland

author

R. Konieczny

• Institute of Experimental Physics, University of Wroclaw, pl. M. Borna 9, 50-204 Wrocław, Poland

author

Ż. Konieczna

• Institute of Experimental Physics, University of Wroclaw, pl. M. Borna 9, 50-204 Wrocław, Poland

author

J. Chojcan

• Institute of Experimental Physics, University of Wroclaw, pl. M. Borna 9, 50-204 Wrocław, Poland

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Identifiers

DOI

10.12693/APhysPolA.119.37