Paper Title:
Residual Stress and Stability of Thermal Barrier Coatings during Cyclic Thermal Loading
  Abstract

The residual stress accumulation of thermal barrier coatings (TBC) during thermal cycling has been simulated by thermal elastic-plastic finite element method. Stability process of thermal barrier coatings during thermal cycling is studied by Melan's static shakedown theorem considering thermal gradients and thermal expansion misfit. The influences of the interfacial morphology of top coat / bond coat (TC/BC) on residual stress and stability process are analyzed. Thus, the residual stress and stability process are affected remarkably by interfacial topography between TC and BC. Accidented interface cause the sudden change of the interfacial residual stress which is harmful to interface bonding intensity and stabilization. It is useful information for studying of the life and final spallation of TBC system.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
1344-1346
DOI
10.4028/www.scientific.net/KEM.368-372.1344
Citation
Y. Q. Xu, X. Y. Gao, Y. A. Yuan, Z. L. Wang, R. Zhou, G. Z. Lv, "Residual Stress and Stability of Thermal Barrier Coatings during Cyclic Thermal Loading", Key Engineering Materials, Vols. 368-372, pp. 1344-1346, 2008
Online since
February 2008
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Price
$32.00
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