Comptes Rendus
no. 7
Relevance of a thermal contact resistance depending on the solid/liquid phase change transition for sprayed composite metal/ceramic powder by direct current plasma jets
[À-propos de la résistance thermique de contact et le changement de phase solide/liquide pour la projection des particules bicouche métal/céramique en projection plasma]

Présenté par : Évariste Sanchez-Palencia

Mohamed Bouneder1  ; Mohammed El Ganaoui1  ; Bernard Pateyron1  ; Pierre Fauchais1
1 Université de Limoges, SPCTS – UMR 66 38 CNRS, Faculté des sciences et techniques, 123, avenue Albert-Thomas, 87060 Limoges, France
Comptes Rendus. Mécanique, Volume 336 (2008) no. 7, pp. 592-599.

Le contact thermique entre couches, joue un rôle important dans le comportement des particules composites à haute température (par exemple, les particules bicouches métal/céramique en projection plasma fabriquées par mécanofusion). Ce travail met en évidence l'intérêt de considérer un contact thermique fonction de l'état de fusion des deux couches sur l'ensemble du procédé de projection thermique. Le modèle prend en compte l'évolution de l'état de la particule le long de son parcours en couplant transferts et changements de phase solide/liquide/vapeur.

The thermal contact between layers plays a key role in the behaviour of composite particles (mechanofused) subjected to a high temperature jet (example of two layers metal/ceramic particles under plasma spraying). This work underlines the interest of considering a thermal contact resistance varying with the melting state of the two components along the full process. The computational model considers the time-dependent state of the particle during its flight with coupled transfers and solid/liquid/vapor phase changes.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crme.2008.05.001
Keywords: Solid–liquid–vapor phase change, Two layer particles, Thermal contact resistance
Mot clés : Changement de phase solide–liquide–vapeur, Particules bicouche, Résistance thermique de contact
Mohamed Bouneder 1 ; Mohammed El Ganaoui 1 ; Bernard Pateyron 1 ; Pierre Fauchais 1

1 Université de Limoges, SPCTS – UMR 66 38 CNRS, Faculté des sciences et techniques, 123, avenue Albert-Thomas, 87060 Limoges, France 
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Mohamed Bouneder; Mohammed El Ganaoui; Bernard Pateyron; Pierre Fauchais. Relevance of a thermal contact resistance depending on the solid/liquid phase change transition for sprayed composite metal/ceramic powder by direct current plasma jets. Comptes Rendus. Mécanique, Volume 336 (2008) no. 7, pp. 592-599. doi : 10.1016/j.crme.2008.05.001. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2008.05.001/

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