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ISSN: 1093-3611 Print
ISSN: 1940-4360 Online
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DOI: 10.1615/HighTempMatProc.v10.i2
Pages: 173
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DOI: 10.1615/HighTempMatProc.v10.i2.20
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Article price - $35.00 |
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RAPID SOLIDIFICATION STUDY OF STABILIZED ZIRCONIA UNDER PLASMA SPRAYING
S. Ben Naoua
SPCTS UMR 6638 CNRS, Faculty of Sciences & Technology, 123 Albert Thomas,87060 Limoges, France; and LETTM, Physical Dept, Faculty of Sciences of Monastir, 5019 Monastir, Tunisia
Mohammed El Ganaoui
Université de Limoges, SPCTS UMR 6638 CNRS, France
SAMMOUDA Habib
LETTM Laboratory, Department of Physics, Faculty of Sciences of Monastir, 5019 Monastir, Tunisia
Pierre Fauchais
Laboratoire Sciences des Procédés Céramiques et de Traitements de Surface, UMR 6638 CNRS-Universite de Limoges, faculte des Sciences et Technique, conventionne avec le CEA n° M08, France
ABSTRACT
This paper presents a numerical study of transient heat transfer and phase change of a thermal spray coating problem. The early solidification of yttria stabilized zirconia splat deposited on a cooled substrate is considered. These phenomena are quantified in terms of some working parameters such that: the splat thickness, the splat/substrate contact quality, the latent heat of solidification and the initial temperatures. A two-dimensional heat transfer model, extended phase change, is developed with an enthalpy formulation in order to predict the splat/substrate thermal story and its effects on plasma surface interaction. The results are in good agreement with an experimental one for the case of a nickel splatting on an alumina substrate.
pages 185-196
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