Zirconia and Pyrochlore Oxides for Thermal Barrier Coatings in Gas Turbine Engines
Abstract
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.
- Authors:
-
- Auburn University, Auburn, AL (United States). Materials Research and Education Center
- Publication Date:
- Research Org.:
- Auburn Univ., AL (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE), Clean Coal and Carbon Management
- Contributing Org.:
- Auburn University
- OSTI Identifier:
- 1178999
- Grant/Contract Number:
- FE0011245
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Metallurgical and Materials Transactions. E, Materials for Energy Systems
- Additional Journal Information:
- Journal Volume: 1; Journal Issue: 2; Journal ID: ISSN 2196-2936
- Publisher:
- ASM International
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Thermal barrier coating; pyrochlore, zirconia
Citation Formats
Fergus, Jeffrey W. Zirconia and Pyrochlore Oxides for Thermal Barrier Coatings in Gas Turbine Engines. United States: N. p., 2014.
Web. doi:10.1007/s40553-014-0012-y.
Fergus, Jeffrey W. Zirconia and Pyrochlore Oxides for Thermal Barrier Coatings in Gas Turbine Engines. United States. https://doi.org/10.1007/s40553-014-0012-y
Fergus, Jeffrey W. Sat .
"Zirconia and Pyrochlore Oxides for Thermal Barrier Coatings in Gas Turbine Engines". United States. https://doi.org/10.1007/s40553-014-0012-y. https://www.osti.gov/servlets/purl/1178999.
@article{osti_1178999,
title = {Zirconia and Pyrochlore Oxides for Thermal Barrier Coatings in Gas Turbine Engines},
author = {Fergus, Jeffrey W.},
abstractNote = {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.},
doi = {10.1007/s40553-014-0012-y},
journal = {Metallurgical and Materials Transactions. E, Materials for Energy Systems},
number = 2,
volume = 1,
place = {United States},
year = {Sat Apr 12 00:00:00 EDT 2014},
month = {Sat Apr 12 00:00:00 EDT 2014}
}
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