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Title:
DURABLE THERMAL BARRIER COATING COMPOSITIONS, COATED ARTICLES, AND COATING METHODS
Document Type and Number:
WIPO Patent Application WO/2010/071703
Kind Code:
A8
Abstract:
A composition useful as a thermal barrier coating on a superalloy substrate intended for use in hostile thermal environments. The coating comprises zirconia stabilized in a predominately tetragonal phase. The composition includes a ceramic component consisting essentially of zirconia (ZrO2) or a combination of zirconia and hafnia (HfO2) and a stabilizer component comprising, in combination, a first co-stabilizer selected from YbO1.5, HoO1.5, ErO1.5, TmO1.5, LuO1.5, and combinations thereof, and a second co-stabilizer selected from TiO2, PdO2, VO2, GeO2, and combinations thereof. Optionally, the stabilizer component includes Y2O3. The stabilizer component is present in an amount effective to achieve the predominantly tetragonal phase in the coating.

Inventors:
FU MING (US)
HAZEL BRIAN THOMAS (US)
BOUTWELL BRETT (US)
SCHAEDLER TOBIAS A (US)
JOHNSON CURTIS ALAN (US)
LIPKIN DON M (US)
VENKATARAMANI VENKAT S (US)
Application Number:
PCT/US2009/058031
Publication Date:
November 04, 2010
Filing Date:
September 23, 2009
Export Citation:
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Assignee:
GEN ELECTRIC (US)
FU MING (US)
HAZEL BRIAN THOMAS (US)
BOUTWELL BRETT (US)
SCHAEDLER TOBIAS A (US)
JOHNSON CURTIS ALAN (US)
LIPKIN DON M (US)
VENKATARAMANI VENKAT S (US)
International Classes:
C23C4/10; C23C4/12; C23C28/00; C23C30/00; F01D5/28; F01D25/00
Attorney, Agent or Firm:
PHILLIPS, Roger, C. et al. (Global Patent OperationPO Box 861, 2 Corporate Drive, Suite 64, Shelton CT, US)
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