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Progress in Plasma Processing of Materials, 1997

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

Suspension plasma spraying for powder preparation

Etienne Bouyer
Plasma Technology Research Centre (CRTP), Department of Chemical Engineering, University of Sherbrooke, Sherbrooke (Quebec), Canada J1K2R1

Matthias Muller
DLR, Institute of Technical Thermodynamics, Vaihingen, Pfaffenwaldring 38-40, D-70569 Stuttgart, Germany

Nicolas Dignard
Plasma Technology Research Centre (CRTP), Department of Chemical Engineering, University of Sherbrooke, Sherbrooke (Quebec), Canada J1K2R1

Francois Gitzhofer
Plasma Technology Research Centre (CRTP), Department of Chemical Engineering University de Sherbrooke, Sherbrooke (Quebec) CANADA J1K 2R1

Maher I. Boulos
Department of Chemical Engineering University of Sherbrooke, 2500 Blvd. de lUniversite Sherbrooke J1К 2R1, PQ - Canada

Abstract

Suspension Plasma Spraying (SPS) was tested concerning its suitability for the production of coarse spherical powders. Suspensions of fine or ultrafine powders of hydroxyapatite, cobalt spinel and Al-Ni-Mo alloy were prepared. By the variation of the suspension liquid phase, the percentage of powder which is correlated to the viscosity of the suspension, and several plasma spray parameters, suitable conditions for the preparation of spherical particles could have been approached. This work describes the influence of the composition of the precursor suspension and of the plasma spray conditions on the morphology and phase content of the particles obtained.