Anisotropic thermal conductivity of thin polycrystalline oxide samples

A. Tiwari; Kévin Boussois; Benoît Nait-Ali; David Stanley Smith; Philippe Blanchart

Anisotropic thermal conductivity of thin polycrystalline oxide samples

A. Tiwari ^{1, *} Kévin Boussois ² Benoît Nait-Ali ² David Stanley Smith ² Philippe Blanchart ²

* Auteur correspondant

2 GEMH - Groupe d'Etudes des Matériaux Hétérogènes

Abstract : This paper reports about the development of a modified laser-flash technique and relation to measure the in-plane thermal diffusivity of thin polycrystalline oxide samples. Thermal conductivity is then calculated with the product of diffusivity, specific heat and density. Design and operating features for evaluating in-plane thermal conductivities are described. The technique is advantageous as thin samples are not glued together to measure in-plane thermal conductivities like earlier methods reported in literature. The approach was employed to study anisotropic thermal conductivity in alumina sheet, textured kaolin ceramics and montmorillonite. Since it is rare to find in-plane thermal conductivity values for such anisotropic thin samples in literature, this technique offers a useful variant to existing techniques.

Type de document :

Article dans une revue

Domaine :

Chimie / Matériaux

Liste complète des métadonnées

https://hal-unilim.archives-ouvertes.fr/hal-01116447
Contributeur : Fabrice Rossignol <>
Soumis le : vendredi 13 février 2015 - 14:30:48
Dernière modification le : lundi 22 janvier 2018 - 14:36:02

Anisotropic thermal conductivity of thin polycrystalline oxide samples

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Anisotropic thermal conductivity of thin polycrystalline oxide samples

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