Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41632

Title

Concept of functionally graded materials for advanced thermal barrier coating applications

Author(s)

Lee, Woo Young;  Stinton, David P.;  Berndt, Christopher C.;  Erdogan, Fazil;  Lee, Yi Der;  Mutasim, Zaher Z.

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.

Publication type

Journal article

Source

Journal of the American Ceramic Society, Vol. 79, no. 12 (Dec 1996), pp. 3003-3012

Publication year

1996

Keyword(s)

Ceramic coatings;  Cermets;  Crystal microstructure;  Gas turbines;  Graded materials;  Intelligent materials;  Reliability;  TBCs;  Thermal barrier coatings;  Thermal insulating materials

Publisher

Wiley-Blackwell Publishing

ISSN

0002-7820

Publisher URL

http://dx.doi.org/10.1111/j.1151-2916.1996.tb08070.x

Additional information

This research was supported by the Advanced Gas Turbine Systems Program, Office of Industrial Technologies, and in part by the High-Temperature Materials Laboratory Fellowship Program, Office of Transportation Technologies, US Department of Energy, under Contract No. DE-AC05-96OR22464 with Lockheed Martin Energy Research Corporation.

Peer reviewed