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Modeling Oxidation Induced Stresses in Thermal Barrier CoatingsThe use of thermal barrier coatings (TBC's) in gas turbines has increased dramatically in recent years, due mainly to the need for component protection from ever increasing service temperatures. Oxidation of the bond coat has been identified as an important contributing factor to spallation of the ceramic top coat during service. Additional variables found to influence TBC thermal cycle life include bond coat coefficient of thermal expansion, creep behavior of both the ceramic and bond coat layers, and modulus of elasticity. The purpose of this work was to characterize the effects of oxidation on the stress states within the TBC system, as well as to examine the interaction of oxidation with other factors affecting TBC life.
Document ID
19980214841
Document Type
Conference Paper
Authors
Ferguson, B. L.
(Deformation Control Technology, Inc. Cleveland, OH United States)
Freborg, A. M.
(Deformation Control Technology, Inc. Cleveland, OH United States)
Petrus, G. J.
(Deformation Control Technology, Inc. Cleveland, OH United States)
Brindley, William J.
(NASA Lewis Research Center Cleveland, OH United States)
Date Acquired
August 18, 2013
Publication Date
May 1, 1998
Publication Information
Publication: Thermal Barrier Coating Workshop, 1997
Subject Category
Nonmetallic Materials
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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