Numerical simulation of ceramic particles impacts on rough substrate under plasma spraying conditions - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2009

Numerical simulation of ceramic particles impacts on rough substrate under plasma spraying conditions

D. Gobin

Résumé

This study deals with numerical simulations of the impact and flattening of Yttria Stabilized Zirconia (YSZ) particles plasma sprayed onto smooth and rough substrates. On smooth substrates, predictions showed the effect of the thermal diffusivity of the substrate as well as the thermal contact resistance between splat and substrate on particle flattening and solidification. When solidification starts before flattening is completed, the contact between the flowing liquid and substrate in the periphery of the lamella becomes very poor and slows down the solidification process. On rough substrates, simulated by adding square columns on the smooth substrate surface, the distance between columns is a key parameter affecting the geometry of the lamella resulting from the droplet impact and, its solidification.

Mots clés

Fichier non déposé

Dates et versions

hal-00363103 , version 1 (20-02-2009)

Identifiants

  • HAL Id : hal-00363103 , version 1

Citer

N. Ferguen, Armelle Vardelle, Pierre Fauchais, D. Gobin. Numerical simulation of ceramic particles impacts on rough substrate under plasma spraying conditions. 32nd International Conference & Exposition on Advanced Ceramics & Composites, Jan 2008, Daytona Beach, United States. pp.159-170. ⟨hal-00363103⟩
38 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More