Karati, A and Ghosh, S and Nagini, M and Mallik, RC and Shabadi, R and Murty, BS and Varadaraju, UV (2022) Thermoelectric properties of nanocrystalline half-Heusler high-entropy Ti2NiCoSn1−xSb1+x (x = 0.3, 0.5, 0.7, 1) alloys with VEC > 18. In: Journal of Alloys and Compounds, 927 . pp. 1-9.
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Abstract
Powder metallurgy route has been employed to synthesize nanocrystalline Ti2NiCoSn1−xSb1+x (x = 0.3, 0.5, 0.7, 1) alloys for thermoelectric applications. Atom probe analysis confirmed the homogeneous distribution of elements in the half-Heusler phase at a scale of few nanometers. A combination of nanostructuring, lattice distortion and interfacial scattering brings about a reduction in lower thermal conductivity which brings forth an improvement in ZT. Ti2NiCoSb2 exhibited the highest ZT of 0.26 due to the increments effected by higher power factor and lower thermal conductivity.
Item Type: | Journal Article |
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Publication: | Journal of Alloys and Compounds |
Publisher: | Elsevier Ltd |
Additional Information: | The copyright for this article belongs to Elsevier Ltd. |
Keywords: | Atom probe tomography; Half-Heusler; High entropy alloy; Nanocrystalline; Thermoelectric |
Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
Date Deposited: | 07 Oct 2022 04:49 |
Last Modified: | 07 Oct 2022 04:49 |
URI: | https://eprints.iisc.ac.in/id/eprint/77007 |
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