On the Concentration and Phase-relation Dependence of Seebeck Coefficient and the Contact Angle in Metallic Solutions

  • Attila Szabo Department of Automotive Technologies, Faculty of Transportation Engineering and Vehicle Engineering, Budapest University of Technology and Economics, H-1521 Budapest, P.O.B. 91, Hungary, Department of Mechanical Engineering, Faculty of Electrical Engineering and Informatics, University of Dunaujvaros, H-2400, Dunaujvaros, Tancsics M. u. 1/a, Hungary
  • Akos Hambalgo Department of Automotive Technologies, Faculty of Transportation Engineering and Vehicle Engineering, Budapest University of Technology and Economics, H-1521 Budapest, P.O.B. 91, Hungary
  • Gergo Megyer Department of Automotive Technologies, Faculty of Transportation Engineering and Vehicle Engineering, Budapest University of Technology and Economics, H-1521 Budapest, P.O.B. 91, Hungary
  • Antal Lovas Department of Automotive Technologies, Faculty of Transportation Engineering and Vehicle Engineering, Budapest University of Technology and Economics, H-1521 Budapest, P.O.B. 91, Hungary

Abstract

The focus of this paper is the deeper understanding of the effect of the change in the electronic structure on the wetting angle and transport properties. For this purpose, using the alloys from the earlier study, the thermopower has been measured and the Seebeck coefficient has also been determined in room temperature (solidified state). During the experiments in both case the modification of the electronic structure were performed by alloying on a way, that the investigated systems are terminal (α) solutions in solid state. The concentration dependence of property changes are interpreted on the bases of free electron model elaborated earlier for this alloy types. This prediction fits well also to the concentration dependence of heat of formation in these alloys. Similar concentration dependence has been also found between the Seebeck coefficient, the resistivity and the heat of mixing in α-phase Fe-Ni alloys. The shift of thermopower were also monitored in order to detect the crystallization (first oreder transformation) starting form amorphous Fe-B alloys. 

Keywords: thermopower, heat of mixing, resistivity, wetting
Published online
2018-06-18
How to Cite
Szabo, A., Hambalgo, A., Megyer, G. and Lovas, A. “On the Concentration and Phase-relation Dependence of Seebeck Coefficient and the Contact Angle in Metallic Solutions”, Periodica Polytechnica Transportation Engineering. doi: https://doi.org/10.3311/PPtr.12112.
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Articles