EP 1686200 A2 20060802 - Protective coating for single crystal superalloy
Title (en)
Protective coating for single crystal superalloy
Title (de)
Schutzbeschichtung für Einkristalline Superlegierung
Title (fr)
Revêtement protecteur pour superalliage monocristallin
Publication
Application
Priority
FR 0500984 A 20050201
Abstract (en)
The monocrystalline superalloy protection procedure consists of applying a surface layer of about 35-80 per cent by weight of cobalt and 65-20 per cent tungsten to the superalloy before coating it with aluminum. The cobalt and tungsten are deposited concomitantly by electrolysis in a layer, preferably between 10 and 20 mcm thick, followed by aluminium coating in the form of aluminisation. The aluminum coating can contain an additional element such as zirconium or hafnium, and the tungsten underlayer can contain platinum or palladium.
Abstract (fr)
Pour protéger contre la corrosion un superalliage monocristallin riche en rhénium tout en évitant la formation de zones de réaction secondaire évolutives, on dépose sur sa surface, avant un traitement d'aluminisation, une couche (3) constituée de tungstène et de cobalt.
IPC 8 full level
C25D 5/34 (2006.01); C25D 5/10 (2006.01); C25D 5/38 (2006.01)
CPC (source: EP US)
C25D 5/10 (2013.01 - EP US); C25D 5/34 (2013.01 - EP US); C25D 5/38 (2013.01 - EP US); C25D 5/611 (2020.08 - EP US); C25D 5/627 (2020.08 - EP US); Y10T 428/12458 (2015.01 - EP US); Y10T 428/12743 (2015.01 - EP US); Y10T 428/1284 (2015.01 - EP US); Y10T 428/12944 (2015.01 - EP US)
Citation (applicant)
- US 5695821 A 19971209 - MURPHY WENDY H [US], et al
- US 5482789 A 19960109 - O'HARA KEVIN S [US], et al
- US 6471790 B1 20021029 - FERNIHOUGH JOHN [CH]
- US 5598968 A 19970204 - SCHAEFFER JON C [US], et al
- US 6447932 B1 20020910 - O'HARA KEVIN S [US], et al
- US 6641929 B2 20031104 - KELLY THOMAS JOSEPH [US], et al
- US 6080246 A 20000627 - WING RODNEY GEORGE [GB]
- FR 2780982 A1 20000114 - ONERA (OFF NAT AEROSPATIALE) [FR]
- US 5366695 A 19941122 - ERICKSON GARY L [US]
- FR 2853329 A1 20041008 - ONERA (OFF NAT AEROSPATIALE) [FR], et al
- REBECCA A. MACKAY ET AL.: "Techniques Optimized for Reducing Instabilities in Advanced Nickel-Base Superalloys for Turbine Blades", RT2001 NASA TECHNOLOGY REPORT, NASA TM 2002-211333
- BRUCE M. WARNES; NICK S. DUSHANE; JACK E. COCKE- RILL: "Cyclic oxida- tion of diffusion aluminide coatings on cobalt base super alloys", SURFACE AND COATINGS TECHNOLOGY, vol. 148, 2001, pages 163 - 170
- A. BRENNER: "ELECTRODEPOSITION OF ALLOYS, PRINCIPLE AND PRACTICE", 1963, ACADE- MIC PRESS
- D. L. ROY ET AL., ELECTRODEPOSITION AND METAL FINISHING, INDIAN SECT. ELECTROCHEM. SOC., 1957, pages 42 - 51
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1686200 A2 20060802; EP 1686200 A3 20080402; EP 1686200 B1 20140806; CA 2534282 A1 20060801; CA 2534282 C 20150929; FR 2881439 A1 20060804; FR 2881439 B1 20071207; US 2007071991 A1 20070329; US 7482039 B2 20090127
DOCDB simple family (application)
EP 06290129 A 20060119; CA 2534282 A 20060126; FR 0500984 A 20050201; US 34580706 A 20060201