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Title: Zirconia and Pyrochlore Oxides for Thermal Barrier Coatings in Gas Turbine Engines

Journal Article · · Metallurgical and Materials Transactions. E, Materials for Energy Systems
 [1]
  1. Auburn University, Auburn, AL (United States). Materials Research and Education Center

One of the important applications of yttria stabilized zirconia is as a thermal barrier coating for gas turbine engines. While yttria stabilized zirconia performs well in this function, the need for increased operating temperatures to achieve higher energy conversion efficiencies, requires the development of improved materials. To meet this challenge, some rare-earth zirconates that form the cubic fluorite derived pyrochlore structure are being developed for use in thermal barrier coatings due to their low thermal conductivity, excellent chemical stability and other suitable properties. In this paper, the thermal conductivities of current and prospective oxides for use in thermal barrier coatings are reviewed. The factors affecting the variations and differences in the thermal conductivities and the degradation behaviors of these materials are discussed.

Research Organization:
Auburn Univ., AL (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE), Clean Coal and Carbon Management
Contributing Organization:
Auburn University
Grant/Contract Number:
FE0011245
OSTI ID:
1178999
Journal Information:
Metallurgical and Materials Transactions. E, Materials for Energy Systems, Vol. 1, Issue 2; ISSN 2196-2936
Publisher:
ASM InternationalCopyright Statement
Country of Publication:
United States
Language:
English

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