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  4. High temperature spark plasma sintering, a fast and one step route to achieve dense and efficient SrTiO 3 -based thermoelectric ceramics
 
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High temperature spark plasma sintering, a fast and one step route to achieve dense and efficient SrTiO 3 -based thermoelectric ceramics

Journal
The European Physical Journal Special Topics
ISSN
1951-6355
Date Issued
2022
Author(s)
Bsaibess, Eliane 
Physics, Mathematics, Computer science 
Moitrier, Florence
Bourré, Thierry
Delorme, Fabian
Zaghrioui, Mustapha
Giovannelli, Fabien
DOI
10.1140/epjs/s11734-022-00575-w
URI
https://depot.sorbonne.ae/handle/20.500.12458/1272
Abstract
Sr0.95La0.05)0.95 0.05TiO3 ceramics were prepared by solid state reaction and sintered by spark plasma sintering at different temperatures ranging from 1473 to 1873 K for 10 min. The thermoelectric properties show that sintering at temperatures higher than 1773 K allows reaching high thermoelectric properties similar to the ones obtained after annealing at high temperatures in H2/N2 for several hours. The high temperature sintered samples exhibit highest power factor near room temperature, resulting in ZT values higher than 0.1. Therefore, the 10 min short SPS process at high temperatures described in this paper is an easy, cheap, fast, and one step route to obtain dense and efficient SrTiO3-based thermoelectric ceramics. However, SEM observations show that the samples are not pure perovskite phase but contain titanium oxide and lanthanum compound aggregates.
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 High temperature spark plasma sintering, a fast and one step route to achieve dense and efficient SrTiO3-based thermoelectric ceramics.pdf (2.26 MB)
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Acquisition Date
Oct 25, 2022
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