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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Print: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v10.i3.50
pages 407-418

INFLUENCE OF ARC INSTABILITIES ON THE INJECTION IN SUSPENSION PLASMA SPRAYING

R. Etchart-Salas
PCTS -CNRS UMR 6638, University of Limoges, 123 av. A. Thomas, 87060 Limoges cedex, France
V. Rat
PCTS -CNRS UMR 6638, University of Limoges, 123 av. A. Thomas, 87060 Limoges cedex, France
J. F. Coudert
Laboratoire Sciences des Procédés Céramiques et Traitements de Surface, UMR-CNRS 6638, Université de Limoges, 87060 Limoges Cedex, France
Pierre Fauchais
Laboratoire Sciences des Procedes Ceramiques et de Traitements de Surface UMR CNRS 6638 University of Limoges 123 avenue Albert Thomas, 87060 LIMOGES - France
G. Lafougere
Lycee Cabanis, Electronics department, 6 boulevard Henri de Jouvenel 19311 Brive-la-Gaillarde Cedex, France

ABSTRACT

Recent works have shown that Suspension Plasma Spraying (SPS) allows depositing Yttria Stabilized Zirconia (YSZ) dense coatings for Solid Oxide Fuel Cells provided that the powder size distribution and plasma parameters are carefully adapted. This paper presents a further analysis of important SPS parameters which leads to control the interaction plasma jet-suspension. A particular attention is paid to the treatment of liquid materials mechanically injected (suspension jet or drops) according to different working parameters such as the plasma mixture and the injection pressure. Concerning the suspension injection, by observing the suspension drops injection with a fast shutter camera triggered by a defined voltage level of the plasma torch, it is shown that plasma jet fluctuations have a strong influence on drops fragmentation.


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