US 5238752
THERMAL BARRIER COATING SYSTEM WITH INTERMETALLIC OVERLAY BOND COAT
Assignee
GENERAL ELECTRIC COMPANY, A CORP OF NY
Filed
May 7, 1990
Granted
Aug 24, 1993
Location
FAIRFIELD OH US
Abstract
A thermal barrier coating system for high temperature superalloys includes an intermetallic bond coating on the substrate and a ceramic topcoat having a columnar grain structure with the columnar axis perpendicular to the surface of the coating. The intermetallic coating is preferably a nickel aluminide or a platinum aluminide, whose upper surface is oxidized during processing to form a thin layer of predominantly aluminum oxide. The ceramic topcoat is preferably zirconium oxide having from about 6 to 20 percent yttrium oxide.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Dec 19, 1990
Rescinded
Jul 29, 1992
Duration
1 year, 7 months
Inventor
- 1EDWARD C. DUDERSTADT
Record Details
- Patent number
- US 5238752
- Application
- 07520017
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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GENERAL ELECTRIC COMPANY, A CORP OF NYBack to patent indexSource: USPTO 35 USC §181 secrecy order records