Study of Compacting Methods for Nanostructured Thermoelectric Materials Based on Si-Ge and Half -Heusler Alloys

Usenko, A.; Khovaylo, V.V.; Voronin, A.I.; Korotitsky, A.V.; Karpenkov, D.Yu.; Maradudina, O.N.

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Title	Study of Compacting Methods for Nanostructured Thermoelectric Materials Based on Si-Ge and Half -Heusler Alloys
Authors	Usenko, A. Khovaylo, V.V. Voronin, A.I. Korotitsky, A.V. Karpenkov, D.Yu. Maradudina, O.N.
ORCID
Keywords	Thermoelectric materials Silicon Germanium Si-Ge Half-Heusler Nanostructured SPS Gleeble Compacting
Type	Conference Papers
Date of Issue	2013
URI	http://essuir.sumdu.edu.ua/handle/123456789/35514
Publisher	Sumy State University
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Citation	Study of Compacting Methods for Nanostructured Thermoelectric Materials Based on Si-Ge and Half -Heusler Alloys [Текст] / A. Usenko, V.V. Khovaylo, A.I. Voronin et al. // Nanomaterials: Applications & Properties (NAP-2013) : 3-nd International conference, Alushta, the Crimea, September 16-21, 2013 / Edited by: A. Pogrebnjak. - Sumy : Sumy State University, 2013. - V.2, No4. - 04NEA12
Abstract	Recent methods of compacting nanopowders of thermoelectric materials of silicon germanium and Half-Heusler (HH) compounds based on Ni(Ti,Zr,Hf)Sn are presented. Half-Heusler alloys are known to be intermetallic compounds with quite large Seebeck coefficient and semiconducting transport properties. This makes them a potential candidate for thermoelectric applications. In this study we compare compacting methods applied to raw materials as a function of crystal structure. The results suggest that the thermal conductivity can be reduced by increasing the phonon scattering via nanostructuring. The effect of spark plasma sintering (SPS) and hot pressing on Gleeble system was analyzed by TEM and SEM methods. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35514
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