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[Parsed Query:ID:"WO2006093759"
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PATENTSCOPE
1. (WO2006093759) METHOD FOR SUBSTRATE STABILIZATION OF DIFFUSION ALUMINIDE COATED NICKEL-BASED SUPERALLOYS
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Pub. No.:
WO/2006/093759
International Application No.:
PCT/US2006/006281
Publication Date:
08.09.2006
International Filing Date:
22.02.2006
IPC:
C23C 8/20
(2006.01),
C23C 10/48
(2006.01),
C23C 8/02
(2006.01),
C23C 8/04
(2006.01)
C
CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
8
Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
06
using gases
08
only one element being applied
20
Carburising
C
CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
10
Solid state diffusion of only metal elements or silicon into metallic material surfaces
28
using solids, e.g. powders, pastes
34
Embedding in a powder mixture, i.e. pack cementation
36
only one element being diffused
48
Aluminising
C
CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
8
Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
02
Pretreatment of the material to be coated
C
CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
8
Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
04
Treatment of selected surface areas, e.g. using masks
Applicants:
GENERAL ELECTRIC COMPANY
[US/US]; One Neumann Way, Cincinnati, OH 45215 (US)
(For All Designated States Except US)
.
FINK, Paul J.
[US/US]; (US)
(For US Only)
.
HAZEL, Brian T.
[US/US]; (US)
(For US Only)
.
GOVERN, Christine
[US/US]; (US)
(For US Only)
.
GREENE, Joseph M.
[US/US]; (US)
(For US Only)
Inventors:
FINK, Paul J.
; (US).
HAZEL, Brian T.
; (US).
GOVERN, Christine
; (US).
GREENE, Joseph M.
; (US)
Agent:
GNIBUS, Michael
; GENERAL ELECTRIC COMPANY, 187 Danbury Rd., Wilton, CT 06897 (US)
Priority Data:
60/656,691
26.02.2005
US
Title
(EN)
METHOD FOR SUBSTRATE STABILIZATION OF DIFFUSION ALUMINIDE COATED NICKEL-BASED SUPERALLOYS
(FR)
PROCEDE POUR STABILISER LE SUBSTRAT DE SUPERALLIAGES A BASE DE NICKEL A REVETEMENT DE DIFFUSION EN ALUMINIURE
Abstract:
(EN)
An article and method for stabilization of a nickel-based superalloy coated with a diffusion aluminide coating. The region below the aluminide coating is first carburized to form refractory carbides. The article is cleaned and masked as required so that regions that will not have an aluminide coating are not carburized. After placing the article into a furnace and heating in a non-oxidizing atmosphere to a carburizing temperature, a carburizing gas is introduced, and the near surface region is carburized to a depth of about 100 microns. Refractory carbides are formed in this region. When a diffusion aluminide coating is formed on the article, the refractory elements, being present as refractory carbides, are not available to form detrimental TCP phases.
(FR)
La présente invention concerne un article et un procédé pour stabiliser un superalliage à base de nickel revêtu avec un revêtement de diffusion en aluminiure. La région située en-dessous du revêtement en aluminiure est d'abord carburée afin de former des carbures réfractaires. L'article est nettoyé et masqué comme nécessaire, de manière que les régions qui ne présenteront pas de revêtement en aluminiure ne soient pas carburées. Après avoir placé l'article dans un four et l'avoir chauffé dans une atmosphère non oxydante jusqu'à une température de cémentation, un gaz carburant est introduit et la région superficielle proche est carburée à une profondeur d'environ 100 microns. Des carbures réfractaires sont formés dans cette région. Lorsqu'un revêtement de diffusion en aluminiure est formé sur l'article, les éléments réfractaires présents sous forme de carbures réfractaires ne sont pas disponibles pour former des phases TCP nuisibles.
Designated States:
AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Org. (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (EAPO) (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language:
English (EN)
Filing Language:
English (EN)