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FEM simulation of oxidation induced stresses in a simplified thermal barrier coating system

Seiler, Philipp E., Bäker, Martin, Rösler, Joachim (2010) FEM simulation of oxidation induced stresses in a simplified thermal barrier coating system. Proceedings in Applied Mathematics and Mechanics, 10 (1). pp. 329-330. ISSN 1617-7061. (doi:10.1002/pamm.201010157) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:90099)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL
https://doi.org/10.1002/pamm.201010157

Abstract

To study the behaviour of the complex failure mechanisms in thermal barrier coatings, a simplified model system is used to reduce the number of system parameters. The artificial system consists of a bond-coat material (fast creeping Fecralloy or slow creeping MA956) as the substrate with a Y2O3 partially stabilized plasma sprayed zircon oxide TBC on top and a TGO between the two layers. A FEM simulation was developed to calculate the stress distribution inside the coating system. The simulation permits the identification of compression and tension areas which are established by the growth of the oxide layer and the stresses which occur during the heating and cooling processes. Full thermal cycles, including heating from RT to 1000°C, dwelling for 2 hours and cooling to RT, were simulated. The stress distributions provide an insight into the possible failure mechanisms in the coating and allow to draw conclusions for optimizing real thermal barrier coating systems. It is shown that the failure mechanism depends on the creep properties of the bond-coat. Therefore, optimizing the creep properties may adjust lifetime of the whole coating system. (© 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)

Item Type: Article
DOI/Identification number: 10.1002/pamm.201010157
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Amy Boaler
Date Deposited: 09 Sep 2021 11:23 UTC
Last Modified: 16 Nov 2021 10:27 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/90099 (The current URI for this page, for reference purposes)
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