Thermoelectric properties of nanocrystalline half-Heusler high-entropy Ti2NiCoSn1−xSb1+x (x = 0.3, 0.5, 0.7, 1) alloys with VEC > 18 - Université de Lille Accéder directement au contenu
Article Dans Une Revue Journal of Alloys and Compounds Année : 2022

Thermoelectric properties of nanocrystalline half-Heusler high-entropy Ti2NiCoSn1−xSb1+x (x = 0.3, 0.5, 0.7, 1) alloys with VEC > 18

Résumé

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.

Domaines

Matériaux
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Dates et versions

hal-04414314 , version 1 (24-01-2024)

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Citer

Anirudha Karati, Sanyukta Ghosh, M. Nagini, Ramesh Chandra Mallik, Rajashekhara Shabadi, et al.. Thermoelectric properties of nanocrystalline half-Heusler high-entropy Ti2NiCoSn1−xSb1+x (x = 0.3, 0.5, 0.7, 1) alloys with VEC > 18. Journal of Alloys and Compounds, 2022, Journal of Alloys and Compounds, pp.166578. ⟨10.1016/j.jallcom.2022.166578⟩. ⟨hal-04414314⟩
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