Phase separation in the half-Heusler thermoelectric materials (Hf,Ti,Zr)NiSn

Abstract : The phase diagram of the pseudoternary (Hf,Ti,Zr)NiSn system is of interest for the selection of the compositions and for the prediction of the stability of the final material prior to measuring its thermoelectric properties. However, a review of the experimental data shows that it is difficult to obtain stable and acceptable alloys. To overcome this difficulty we have performed ab-initio calculations to predict the phase separations in the half Heusler phase. Our calculations are consistent with the experimental data and we obtain the evolution of the solid-solution from 500 to 1300 K the temperature range of interest of these materials.
Type de document :
Article dans une revue
Scripta Materialia, Elsevier, 2017, 139, pp.122 - 125. 〈10.1016/j.scriptamat.2017.06.036〉
Domaine :
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-01552856
Contributeur : Philippe Jund <>
Soumis le : lundi 3 juillet 2017 - 12:06:44
Dernière modification le : jeudi 13 septembre 2018 - 15:30:03

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Alexandre Berche, J.C. Tédenac, P. Jund. Phase separation in the half-Heusler thermoelectric materials (Hf,Ti,Zr)NiSn. Scripta Materialia, Elsevier, 2017, 139, pp.122 - 125. 〈10.1016/j.scriptamat.2017.06.036〉. 〈hal-01552856〉

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