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Prototype de thermobalance multitêtes avec cyclage thermique rapide

Published online by Cambridge University Press:  21 June 2007

Sandrine Sureau
Affiliation:
CIRIMAT, UMR CNRS 5085, Equipe MEMO, ENSIACET, 118 route de Narbonne, 31400 Toulouse, France
Daniel Monceau
Affiliation:
CIRIMAT, UMR CNRS 5085, Equipe MEMO, ENSIACET, 118 route de Narbonne, 31400 Toulouse, France
Dominique Poquillon
Affiliation:
CIRIMAT, UMR CNRS 5085, Equipe MEMO, ENSIACET, 118 route de Narbonne, 31400 Toulouse, France
Jean-claude Salabura
Affiliation:
CIRIMAT, UMR CNRS 5085, Equipe MEMO, ENSIACET, 118 route de Narbonne, 31400 Toulouse, France
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Abstract

Lorsque la résistance à l'oxydation à haute température des matériaux est testée, l'essai d'oxydation cyclique est souvent utilisé comme référence car il intègre la cinétique d'oxydation isotherme, l'adhérence de l'oxyde, les contraintes mécaniques, le fluage de l'alliage métallique et de l'oxyde dans des conditions proches de celles de l'utilisation. Cet article présente un nouvel outil expérimental, qui permet la mesure simultanée et individuelle de la masse de plusieurs échantillons placés dans la même atmosphère contrôlée pendant le cyclage thermique rapide. Cette thermobalance multitêtes est décrite, en association avec la description de la méthodologie de mesure. Les performances de l'appareil sont données, ceci incluant les vitesses de chauffe et de refroidissement ainsi qu'un essai de mesure de masse continue sur un échantillon de Ni20Cr.

Type
Research Article
Copyright
© AFM, EDP Sciences, 2007

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Dispositif et procédé de test, par thermogravimétrie, du comportement d'un matériau solide in: vol N° enregistrement francais : FR0300742, N° demande internationale : PCT/FR2004/000090, N° publication internationale : WO2004/068102, N° demande brevet canadien CA2514070, N° demande brevet Europe EP1585976.

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