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Fizika i Tekhnika Poluprovodnikov, 2021, Volume 55, Issue 12, Pages 1132–1137
DOI: https://doi.org/10.21883/FTP.2021.12.51695.10 (Mi phts4906) 		 
XVII Interstate Conference ''Thermoelectrics and Their Applications -- 2021" (ISCTA 2021 St. Petersburg, September 13-16, 2021)

The analysis of thermoelectric powder compaction mechanisms within field-activated sintering of skutterudites and Heusler alloys

A. S. Tukmakovaa, N. I. Khakhileva, D. B. Shcheglovaa, V. D. Nasonova, A. P. Novitskiib, I. A. Serhiienkob, A. V. Novotelnovaa

a St. Petersburg National Research University of Information Technologies, Mechanics and Optics
b National University of Science and Technology «MISIS», Moscow
Full-text PDF (267 kB)
DOI: https://doi.org/10.21883/FTP.2021.12.51695.10
Abstract: The analysis of the shrinkage rate of powders, based on the power-law creep model of a porous body, was carried out in this paper to calculate the compaction parameters of CoSb$_3$-based skutterudites and Fe$_2$VAl-based Heusler alloys within field-activated sintering. It was indicated that this method, which had already been used for metal and ceramic powders, is applicable for thermoelectric powders. The values of strain rate sensitivity were obtained, and the corresponding powder compaction mechanisms have been defined. The main creep mechanism for skutterudites was found to be a dislocation climb, that later was replaced by grain boundary sliding, and the last sintering stage was associated with diffusional creep. The main creep mechanism for Heusler alloys was grain boundary sliding, later replaced by diffusional creep.
Keywords: field-assisted sintering, numerical simulation, powders compaction, skutterudites, Heusler alloys, thermoelectrics.
Funding agency Grant number
Russian Science Foundation 19-79-10282
ITMO
Received: 12.08.2021
Revised: 28.08.2021
Accepted: 28.08.2021
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: A. S. Tukmakova, N. I. Khakhilev, D. B. Shcheglova, V. D. Nasonov, A. P. Novitskii, I. A. Serhiienko, A. V. Novotelnova, “The analysis of thermoelectric powder compaction mechanisms within field-activated sintering of skutterudites and Heusler alloys”, Fizika i Tekhnika Poluprovodnikov, 55:12 (2021), 1132–1137
Citation in format AMSBIB
\Bibitem{TukKhaShc21}
\by A.~S.~Tukmakova, N.~I.~Khakhilev, D.~B.~Shcheglova, V.~D.~Nasonov, A.~P.~Novitskii, I.~A.~Serhiienko, A.~V.~Novotelnova
\paper The analysis of thermoelectric powder compaction mechanisms within field-activated sintering of skutterudites and Heusler alloys
\jour Fizika i Tekhnika Poluprovodnikov
\yr 2021
\vol 55
\issue 12
\pages 1132--1137
\mathnet{http://mi.mathnet.ru/phts4906}
\crossref{https://doi.org/10.21883/FTP.2021.12.51695.10}
\elib{https://elibrary.ru/item.asp?id=46667380}
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