Title

Development of Morphology and Stresses in a Class of Thermal Barrier Systems During Thermal Cycling

Document Type

Conference Proceeding

Publication Date

2003

Publication Title

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings

Abstract

The morphology and the material properties continuously evolve during the lifetime of a thermal barrier coating. For example, the growth of the thermally grown oxide (TGO) is associated with a range of thermo-mechanical property changes as the system is aged. Accordingly, many failures are related to the TGO formation, where cracks nucleate, propagate and coalesce to eventually cause spallation of the ceramic topcoat. This work treats the development of a system based on Pt-modified aluminde bond coat, which undergoes martensitic transformations.

DOI

10.1002/9780470294802.ch77

Volume

24

Issue

3