Title :
Observation of the grain size influence on the thermoelectric properties of polycrystalline bismuth-antimony alloys
Author :
Deveaux, X. ; Brochin, F. ; Dauscher, A. ; Lenoir, B. ; Martin-Lopez, R. ; Scherrer, H. ; Scherrer, S.
Author_Institution :
Lab. de Phys. des Mater., CNRS, Nancy, France
Abstract :
This paper is devoted to the study of the transport properties of polycrystalline Bi86.5Sb13.5 alloys. Pellets of polycrystalline alloys were prepared by cold pressing and sintering of ultrafine powders. The average grain size of the bulk materials was adjusted from 0.1 μm to 200 μm. The influence of the microstructure and the grain size on both electrical and thermal conductivity, thermoelectric power and thermoelectric figure of merit is presented
Keywords :
antimony alloys; bismuth alloys; crystal microstructure; electrical conductivity; grain size; semiconductor materials; thermal conductivity; thermoelectric power; Bi86.5Sb13.5; cold pressing; electrical conductivity; grain size influence; microstructure; polycrystalline bismuth-antimony alloys; sintering; thermal conductivity; thermoelectric figure of merit; thermoelectric power; thermoelectric properties; transport properties; ultrafine powders; Bismuth; Electrons; Grain boundaries; Grain size; Pollution measurement; Powders; Scattering; Temperature; Thermal conductivity; Thermoelectricity;
Conference_Titel :
Thermoelectrics, 1997. Proceedings ICT '97. XVI International Conference on
Conference_Location :
Dresden
Print_ISBN :
0-7803-4057-4
DOI :
10.1109/ICT.1997.667080