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Characterization of the thermo-mechanical properties of p-type (MnSi1.77) and n-type (Mg2Si0.6Sn0.4) thermoelectric materials

Mejri, Mahdi and Thimont, Yohann and Malard, Benoît and Estournès, Claude Characterization of the thermo-mechanical properties of p-type (MnSi1.77) and n-type (Mg2Si0.6Sn0.4) thermoelectric materials. (2019) Scripta Materialia, 172. 28-32. ISSN 1359-6462

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Official URL: https://doi.org/10.1016/j.scriptamat.2019.06.037

Abstract

The thermoelectric generators reliability is highly sensitive to the materials they are made off. This work aims to characterize the structure, microstructure, emissivity and thermo-mechanical properties of p-type (MnSi1.77) and n-type (Mg2Si0.6Sn0.4) highly promising thermoelectric materials. In particular, the temperature dependence of the Young's modulus, evaluated by impulse excitation technique, shows for both materials values higher than those reported in literature. Fracture toughness measured by both single edge notched beam and indentation methods exhibits similar values to those reported in the literature. Micro-indentation measurements reveal that the hardness values of the MnSi1.77 are significantly higher than the Mg2Si0.6Sn0.4 one.

Item Type:Article
HAL Id:hal-02186148
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Funders:
Agence Nationale de la Recherche- ANR
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Deposited By: cirimat webmestre
Deposited On:17 Jul 2019 07:52

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