EP 0995817 A1 20000426 - Thermal barrier coating system and methods
Title (en)
Thermal barrier coating system and methods
Title (de)
Wärmeschutz-Beschichtung und Herstellungsverfahren
Title (fr)
Systeme et procédes de revêtement formant barrière thermique
Publication
Application
Priority
US 17486498 A 19981019
Abstract (en)
Disclosed is a noble metal bond coat of a thermal barrier coating system useful for enhancing adhesion of a ceramic topcoat to a superalloy substrate. The bond coat includes about 10 to 30 weight percent aluminum, about 2 to 60 weight percent noble metal, between trace amounts and about 3 weight percent of a reactive element selected from the group consisting of yttrium, zirconium, hafnium, scandium, all the lanthanides, and mixtures thereof, and balance selected from the group consisting of nickel, cobalt, iron and mixtures thereof, wherein the bond coat is further characterized by absence of added chromium. One method includes plasma spraying a prealloyed powder of the bond coat composition on the substrate followed by alumina formation and ceramic topcoat deposition. Uses include thermal barrier coating systems on gas turbine engine hot section components such as turbine blade and vane airfoils, combustors, and exhaust nozzles.
IPC 1-7
IPC 8 full level
C23C 28/00 (2006.01)
CPC (source: EP)
C23C 28/321 (2013.01); C23C 28/3215 (2013.01); C23C 28/325 (2013.01); C23C 28/345 (2013.01); C23C 28/3455 (2013.01)
Citation (search report)
- [XY] EP 0733723 A1 19960925 - HOWMET CORP [US]
- [XY] WO 9729219 A2 19970814 - INTERTURBINE NV [NL], et al
- [A] WO 7900343 A1 19790614 - SECR DEFENCE [GB], et al
- [A] EP 0718419 A2 19960626 - ROLLS ROYCE PLC [GB], et al
- [A] US 5238752 A 19930824 - DUDERSTADT EDWARD C [US], et al
- [A] STECURA S: "EFFECTS OF YTTRIUM, ALUMINUM AND CHROMIUM CONCENTRATIONS IN BOND COATINGS ON THE PERFORMANCE OF ZIRCONIA-YTTRIA THERMAL BARRIERS", THIN SOLID FILMS,CH,ELSEVIER-SEQUOIA S.A. LAUSANNE, vol. 73, no. 2, 23 April 1980 (1980-04-23), pages 481 - 489, XP002032197, ISSN: 0040-6090
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0995817 A1 20000426; EP 0995817 B1 20070516; AT E362555 T1 20070615; DE 69936088 D1 20070628; DE 69936088 T2 20080124; ES 2288002 T3 20071216
DOCDB simple family (application)
EP 99308241 A 19991019; AT 99308241 T 19991019; DE 69936088 T 19991019; ES 99308241 T 19991019