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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.19 SNIP: 0.341 CiteScore™: 0.43

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

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

DOI: 10.1615/HighTempMatProc.v9.i2.20
pages 195-209

INFLUENCE OF SPRAY TECHNOLOGY ON IONIC CONDUCTIVITY OF YTTRIA STABILIZED ZIRCONIA

G. Renouard-Vallet
CEA le Ripault, Monts, France
L. Bianchi
Commissariat a L'Energie Atomique, Le Ripault, B.P. 16, 37260 MONTS, 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
Michel Vardelle
LMCTS-URA 320, University of Limoges, 123 Avenue Albert Thomas -87060 Limoges Cedex - France
Maher I. Boulos
Department of Chemical Engineering University of Sherbrooke, 2500 Blvd. de lUniversite Sherbrooke J1К 2R1, PQ - Canada
Francois Gitzhofer
Plasma Technology Research Centre (CRTP), Department of Chemical Engineering University de Sherbrooke, Sherbrooke (Quebec) CANADA J1K 2R1

ABSTRACT

In this paper the influence of plasma spray parameters of both Vacuum Plasma Spraying (VPS) and Air Plasma Spraying (APS) processes onto Yttria Stabilized Zirconia (YSZ) coating microstructures were studied in order to establish a correlation with the ionic conductivity.
Investigations of the relationships between spraying conditions and the spreading of particles were carried out thanks to a study of in-flight particle properties.
The in-flight properties were determined using the DPV 2000 and the lamellae were studied by optical microscopy and 3D analyzes. Coatings were then elaborated.
Coating microstructures were evaluated by Scanning Electron Microscopy (SEM) and their electrical properties by Impedance Spectroscopy (IS) in order to establish a relationship between interlamellar contacts and ionic conductivity. It has been shown that with these results, it has been possible to increase the ionic conductivity of YSZ coatings by improving their interlamellar contacts.


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