Please use this identifier to cite or link to this item: http://dspace.univ-eloued.dz/handle/123456789/7132
Title: Simulation Of Thermo-elastics Properties Of Thermal Barrier Coatings
Authors: Ferouani, A. M.
Faraoun, H. I.
Aourag, H.
Keywords: thermal barriers, thermal projection, micrographics (MEB),Finite element method, code OOF
Issue Date: 1-Jan-2011
Publisher: University of Eloued جامعة الوادي
Citation: Articale in Journal of fundamental and Applied Sciences Vol. 03 N. 01
Abstract: Thermal barrier coatings are used to protect different parts in compressors and turbines from heat. They are generally composed of two layers, one metallic layer providing resistance to heat corrosion and oxidation, and one thermally insulating ceramic layer. Two different techniques are industrially used. Plasma spray results in a lamellar structure granting a low thermal conductivity, but with a low thermal expansion compliance. Electron Beam Physical Vapour Deposition generates a columnar structure allowing a better accommodation of the thermal expansion stresses, entailing improved lifetime of the coating, but with a higher thermal conductivity. The aim of the paper presented here is to develop a procedure of analysis based on the micro structural observation for the prediction of the properties of new coatings in court of industrial development and to predict the effect of the posterior thermal treatment on the properties of the coatings carried out. For a given coating, one has to calculate linear elasticity and its evolution with the temperature as well as thermal expansion, aiming at predicting different parameters related to the in service deterioration.
Description: Articale in Journal of fundamental and Applied Sciences Vol. 03 N. 01
URI: http://dspace.univ-eloued.dz/handle/123456789/7132
ISSN: 1112-9867
Appears in Collections:Vol 03 N01

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