Evaluation of layered TiS2-based thermoelectric elements fabricated by a centrifugal heating technique
We have developed a centrifugal heating apparatus to fabricate layered TiS2-based thermoelectric elements, and evaluated their thermoelectric properties. We found that layered (SnS)1.2(TiS2)2 bulk elements with preferred crystallographic orientation can be produced within a quartz tube under a centr...
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Veröffentlicht in: | Journal of the Ceramic Society of Japan 2011/05/01, Vol.119(1389), pp.382-385 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We have developed a centrifugal heating apparatus to fabricate layered TiS2-based thermoelectric elements, and evaluated their thermoelectric properties. We found that layered (SnS)1.2(TiS2)2 bulk elements with preferred crystallographic orientation can be produced within a quartz tube under a centrifugal acceleration of 1,000 g or higher and at a maximum temperature of 1,073 K or higher. With the increasing centrifugal acceleration from 1,000 to 8,000 g, the electrical conductivity of the produced specimen was almost doubled possibly because of the increased degree of crystal-axis orientation. For the specimens produced at 8,000 g, we estimated a maximum thermoelectric figure of merit, ZT, of approximately 0.2 (673 K). We have thus demonstrated that it is possible to use the centrifugal heating technique to fabricate layered TiS2-based thermoelectric elements directly from the powdered raw materials. |
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ISSN: | 1882-0743 1348-6535 |
DOI: | 10.2109/jcersj2.119.382 |