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Progress in Plasma Processing of Materials, 1997

ISBN:
1-56700-093-2 (Print)

MODELLING OF CRYOGENIC COOLING IN CONTROLLED ATMOSPHERE AND TEMPERATURE PLASMA SPRAYING PROCESS

Erick Meillot
CEA/DAM Le Ripault, BP 16 - 37260 Monts - France

Paul Lucchese
Commissariat a l'Energie Atomique, Le Ripault, B.P. 16, 37260 Monts, France

Jean-Noel Richet
Commissariat a l'Energie Atomique, Bruyeres-le-Chatel, B.P. 12, 91680 Bruyeres-le-Chatel, France

Gerard Chambon
Commissariat a l'Energie Atomique, Bruyeres-le-Chatel, B.P. 12, 91680 Bruyeres-le-Chatel, France

Abstract

Ceramics coating by plasma spraying on thermally sensitive substrates needs a hard cooling unto the substrate immedialty behind the plasma and particles jet moving. That needs a cryogenic cooling spray. The two presented softwares simulate the formation of the droplets and their trajectories between the nozzle and the substrate. Flux measurements show the different cooling mechanisms with the spray parameters.