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Nanocrystalline thermoelectric alloys: Processing, chemistry and characterization
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0001-5678-5298
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
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2005 (English)In: BULK AND GRADED NANOMETALS / [ed] Kurzydlowski, KJ; Pakiela, Z, 2005, Vol. 101-102, p. 197-204Conference paper, Published paper (Refereed)
Abstract [en]

A novel chemical alloying method has been developed for the fabrication of nanocrystalline thermoelectric alloys cobalt antimonide, CoSb3, and bismuth telluride, Bi2Te3. The method combines a solution chemical method and thermal processing under controlled heating conditions. The components have been co-precipitated from a solution and the precursor consisted of a solid solution of the different intermediate compounds with different crystallinity. Calcination and hydrogen reduction of the precursor at moderate temperature, 350degreesC, resulted in the alloying of these elements to obtain the nanocrystalline thermoelectric material. Crystallization of the amorphous precursor as well as the processing route have been investigated by following the changes in the chemistry of the material from the precursor to the final alloy. Detailed microstructure investigation by electron microscopy has also been presented.

Place, publisher, year, edition, pages
2005. Vol. 101-102, p. 197-204
Series
SOLID STATE PHENOMENA, ISSN 1012-0394 ; 101-102
Keywords [en]
nanocrystalline, thermoelectric, chemical alloying, cobalt antimonide, bismuth telluride, coprecipitation, thermodynamic modeling, thermal conductivity, ZT
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-42773ISI: 000227186800033Scopus ID: 2-s2.0-32644440216OAI: oai:DiVA.org:kth-42773DiVA, id: diva2:447759
Conference
European-Materials-Research-Society Fall Meeting (E-MRS 2003) Location: Warsaw Univ Technol, Warsaw, POLAND Date: SEP 15-19, 2003
Note
QC 20111013Available from: 2011-10-13 Created: 2011-10-12 Last updated: 2011-10-13Bibliographically approved

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