Piezospectroscopic analysis of interface debonding in thermal barrier coatings
Journal Article
·
· Journal of the American Ceramic Society
One of the principal modes by which electron-beam-evaporated thermal barrier coatings fail is via the nucleation of local regions of debonding, which grow and link together until reaching a critically sized flaw for spontaneous buckling and spalling. This progressive-failure mode is used as a basis for analyzing the changes that can occur in photostimulated luminescence spectra that have been recorded from the thermally grown oxide. This process also provides a basis for the quantitative determination of the extent of local damage prior to spalling from an analysis of the shape of the luminescence spectra.
- Research Organization:
- Univ. of California, Santa Barbara, CA (US)
- OSTI ID:
- 20075974
- Journal Information:
- Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 5 Vol. 83; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
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