Highly defective oxides as sinter resistant thermal barrier coating
Abstract
A thermal barrier coating material formed of a highly defective cubic matrix structure having a concentration of a stabilizer sufficiently high that the oxygen vacancies created by the stabilizer interact within the matrix to form multi-vacancies, thereby improving the sintering resistance of the material. The concentration of stabilizer within the cubic matrix structure is greater than that concentration of stabilizer necessary to give the matrix a peak ionic conductivity value. The concentration of stabilizer may be at least 30 wt. %. Embodiments include a cubic matrix of zirconia stabilized by at least 30-50 wt. % yttria, and a cubic matrix of hafnia stabilized by at least 30-50 wt. % gadolinia.
- Inventors:
- Issue Date:
- Research Org.:
- Siemens Westinghouse Power Corporation, Orlando, FL, (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175466
- Patent Number(s):
- 6930066
- Application Number:
- 10/010,676
- Assignee:
- Siemens Westinghouse Power Corporation
- Patent Classifications (CPCs):
-
C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- DOE Contract Number:
- FC21-95MC32267
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Subramanian, Ramesh. Highly defective oxides as sinter resistant thermal barrier coating. United States: N. p., 2005.
Web.
Subramanian, Ramesh. Highly defective oxides as sinter resistant thermal barrier coating. United States.
Subramanian, Ramesh. Tue .
"Highly defective oxides as sinter resistant thermal barrier coating". United States. https://www.osti.gov/servlets/purl/1175466.
@article{osti_1175466,
title = {Highly defective oxides as sinter resistant thermal barrier coating},
author = {Subramanian, Ramesh},
abstractNote = {A thermal barrier coating material formed of a highly defective cubic matrix structure having a concentration of a stabilizer sufficiently high that the oxygen vacancies created by the stabilizer interact within the matrix to form multi-vacancies, thereby improving the sintering resistance of the material. The concentration of stabilizer within the cubic matrix structure is greater than that concentration of stabilizer necessary to give the matrix a peak ionic conductivity value. The concentration of stabilizer may be at least 30 wt. %. Embodiments include a cubic matrix of zirconia stabilized by at least 30-50 wt. % yttria, and a cubic matrix of hafnia stabilized by at least 30-50 wt. % gadolinia.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {8}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.