Concept of Functionally Graded Materials for Advanced Thermal Barrier Coating Applications
- 1 December 1996
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 79 (12) , 3003-3012
- https://doi.org/10.1111/j.1151-2916.1996.tb08070.x
Abstract
This feature article explores the concept of creating functionally graded metal‐ceramic composite microstructures for thermal barrier coatings used in gas‐turbine applications. From a thermomechanical perspective, this concept offers the possibility of significantly improving the life and reliability of thermal barrier coatings. However, prior research reveals that progress has been somewhat limited because of the oxidative instability exhibited by some metal‐ceramic composite microstructures. The present study addresses some of the materials criteria and research issues associated with preparing chemically stable, yet mechanically durable, graded metal‐ceramic microstructures for realistic application environments.Keywords
This publication has 20 references indexed in Scilit:
- Protective coatings in the gas turbine engineSurface and Coatings Technology, 1994
- Effect of sulfur removal on Al2O3 scale adhesionMetallurgical Transactions A, 1991
- Ceramic Coatings for Advanced Heat Engines-A Review and ProjectionAdvanced Ceramic Materials, 1987
- Current status of thermal barrier coatings — An overviewSurface and Coatings Technology, 1987
- Alumina-CoCrAlY Material as an Improved Intermediate Layer for Graded Ceramic Gas-Path Sealing in Aeroturbine EnginesPublished by Wiley ,1986
- Reactive element-sulfur interaction and oxide scale adherenceMetallurgical Transactions A, 1985
- Oxidation‐Based Model for Thermal Barrier Coating LifeJournal of the American Ceramic Society, 1984
- On the mechanical behavior of brittle coatings and layersOxidation of Metals, 1983
- Failure mechanisms of thermal barrier coatings exposed to elevated temperaturesThin Solid Films, 1982
- Self-diffusion and impurity diffusion in oxidesJournal of Materials Science, 1980