(19)
(11) EP 0 266 299 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
31.05.1989 Bulletin 1989/22

(43) Date of publication A2:
04.05.1988 Bulletin 1988/18

(21) Application number: 87630212.6

(22) Date of filing: 26.10.1987
(51) International Patent Classification (IPC)4: C23C 4/02, C23C 4/06, C23C 4/08, C23C 4/10
(84) Designated Contracting States:
CH DE FR GB LI NL

(30) Priority: 30.10.1986 US 925654

(71) Applicant: UNITED TECHNOLOGIES CORPORATION
Hartford, CT 06101 (US)

(72) Inventors:
  • Vine, Raymond William
    East Hartford Connecticut 06108 (US)
  • Sheffler, Keith Douglas
    Wethersfield Connecticut 06109 (US)
  • Bevan, Charles Edward
    Colchester Connecticut 06415 (US)

(74) Representative: Schmitz, Jean-Marie et al
Dennemeyer & Associates Sàrl P.O. Box 1502
1015 Luxembourg
1015 Luxembourg (LU)


(56) References cited: : 
   
       


    (54) Thermal barrier coating system


    (57) A thermal barrier coating system for the protection of nickel and cobalt base superalloys at elevated temperature comprises 7% yttria partially stabilized zirconia plasma sprayed in air on a plasma sprayed NiCoCrAlY bond coat which has been plasma sprayed in air.







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