The Effect of Thermal Mismatch on Stresses, Morphology and Failures in Thermal Barrier Coatings

J. Shi; S. Darzens; Anette M Karlsson

doi:10.1002/9780470291191.ch53

The Effect of Thermal Mismatch on Stresses, Morphology and Failures in Thermal Barrier Coatings

J. Shi
, S. Darzens
, Anette M Karlsson

University of Delaware

Research output: Contribution to journal › Article › peer-review

Abstract

<p> Platinum modified aluminide bond coat used for oxidation protection in thermal barrier coatings are prone to develop morphological instabilities in the interface to the ceramic top coat. Previous work has shown that there are a range of factors influencing this development, where key factors are the lateral growth strain in the thermally grown oxide, the relatively low yield strength of the Pt&hyphen;modified bond coat at high temperature, and cyclic loading. In this study we show that the development of the instabilities can be greatly enhanced due to the thermal mismatch between the substrate and the bond coat.</p>

Original language	American English
Journal	28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings
Volume	25
DOIs	https://doi.org/10.1002/9780470291191.ch53
State	Published - Dec 31 2003

Disciplines

Ceramic Materials
Mechanical Engineering

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10.1002/9780470291191.ch53License: CC BY

https://onlinelibrary.wiley.com/doi/pdf/10.1002/9780470291191.ch53

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title = "The Effect of Thermal Mismatch on Stresses, Morphology and Failures in Thermal Barrier Coatings",

abstract = " Platinum modified aluminide bond coat used for oxidation protection in thermal barrier coatings are prone to develop morphological instabilities in the interface to the ceramic top coat. Previous work has shown that there are a range of factors influencing this development, where key factors are the lateral growth strain in the thermally grown oxide, the relatively low yield strength of the Pt\&hyphen;modified bond coat at high temperature, and cyclic loading. In this study we show that the development of the instabilities can be greatly enhanced due to the thermal mismatch between the substrate and the bond coat.",

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AU - Darzens, S.

AU - Karlsson, Anette M

PY - 2003/12/31

Y1 - 2003/12/31

N2 - Platinum modified aluminide bond coat used for oxidation protection in thermal barrier coatings are prone to develop morphological instabilities in the interface to the ceramic top coat. Previous work has shown that there are a range of factors influencing this development, where key factors are the lateral growth strain in the thermally grown oxide, the relatively low yield strength of the Pt&hyphen;modified bond coat at high temperature, and cyclic loading. In this study we show that the development of the instabilities can be greatly enhanced due to the thermal mismatch between the substrate and the bond coat.

AB - Platinum modified aluminide bond coat used for oxidation protection in thermal barrier coatings are prone to develop morphological instabilities in the interface to the ceramic top coat. Previous work has shown that there are a range of factors influencing this development, where key factors are the lateral growth strain in the thermally grown oxide, the relatively low yield strength of the Pt&hyphen;modified bond coat at high temperature, and cyclic loading. In this study we show that the development of the instabilities can be greatly enhanced due to the thermal mismatch between the substrate and the bond coat.

UR - https://engagedscholarship.csuohio.edu/enme_facpub/333

UR - https://onlinelibrary.wiley.com/doi/pdf/10.1002/9780470291191.ch53

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M3 - Article

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JO - 28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings

JF - 28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings

ER -

The Effect of Thermal Mismatch on Stresses, Morphology and Failures in Thermal Barrier Coatings

Abstract

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