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高温材料处理:国际期刊
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN 打印: 1093-3611
ISSN 在线: 1940-4360

高温材料处理:国际期刊

DOI: 10.1615/HighTempMatProc.v10.i2.20
pages 185-196

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
Habib Sammouda
Higher School of Science and Technology of Hammam Sousse- Sousse university- Tunisia
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

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.


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