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Control of thermoel...
Control of thermoelectric properties in ZrO2/CoSb3 nano-dispersed composites
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Stiewe, C. (författare)
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He, Z. (författare)
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Platzek, D. (författare)
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Karpinski, G. (författare)
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Mueller, E. (författare)
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Li, S. (författare)
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- Toprak, Muhammet S. (författare)
- KTH,Mikroelektronik och Informationsteknik, IMIT
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- Muhammed, Mamoun (författare)
- KTH,Materialvetenskap
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(creator_code:org_t)
- Wiley, 2007
- 2007
- Engelska.
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Ingår i: Materialwissenschaft und Werkstofftechnik. - : Wiley. - 0933-5137 .- 1521-4052. ; 38:9, s. 773-776
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Nano-dispersed ZrO2/CoSb3 composites of various composition were prepared by uniaxial hot pressing of nano-sized powders of thermoelectric CoSb3 intermixed with ceramic nano-powders. The phase purity, the niicrostructure, and the temperature dependent transport parameters of the composites were investigated. Non-dispersed samples from nano-sized CoSb3 powders show higher electrical conductivity compared to melt-grown material which is attributed to the presence of a small excess of metallic Sb, but they exhibit lower thermal conductivity due to the fine-grained structure. Addition of 5 at.-% ZrO2 enhances the ratio of electrical to thermal conductivity, whereas hardly affects the See-beck coefficient. In this manner the nano-dispersion method provides an effective approach to improving the materials thermoelectric performance.
Nyckelord
- nanocomposites
- thermoelectric properties
- ZrO2
- CoSb3
- transport-properties
- cosb3
- skutterudites
- scattering
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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