EP0587341A1 - Revêtements composites résistant à la corrosion à haute température - Google Patents

Revêtements composites résistant à la corrosion à haute température Download PDF

Info

Publication number: EP0587341A1
Authority: EP; European Patent Office
Prior art keywords: coating; platinum; mcraly; surface layer; aluminides
Prior art date: 1992-09-05
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP93306699A

Other languages

German (de)

English (en)

Other versions

EP0587341B1 (fr

Inventor

Mehar Chand Meelu

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Rolls Royce PLC

Original Assignee

Rolls Royce PLC

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1992-09-05

Filing date

1993-08-24

Publication date

1994-03-16

1993-08-24 Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC

1994-03-16 Publication of EP0587341A1 publication Critical patent/EP0587341A1/fr

1996-03-20 Application granted granted Critical

1996-03-20 Publication of EP0587341B1 publication Critical patent/EP0587341B1/fr

2013-08-24 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000000576 coating method Methods 0.000 title claims abstract description 194
238000005260 corrosion Methods 0.000 title description 15
230000007797 corrosion Effects 0.000 title description 15
239000002131 composite material Substances 0.000 title 1
239000011248 coating agent Substances 0.000 claims abstract description 166
BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 161
229910052697 platinum Inorganic materials 0.000 claims abstract description 79
229910000951 Aluminide Inorganic materials 0.000 claims abstract description 64
239000010410 layer Substances 0.000 claims abstract description 61
239000011651 chromium Substances 0.000 claims abstract description 43
238000000034 method Methods 0.000 claims abstract description 41
239000002344 surface layer Substances 0.000 claims abstract description 41
230000008569 process Effects 0.000 claims abstract description 29
229910052804 chromium Inorganic materials 0.000 claims abstract description 28
239000000463 material Substances 0.000 claims abstract description 28
229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 25
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 24
239000004411 aluminium Substances 0.000 claims abstract description 23
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 22
238000005254 chromizing Methods 0.000 claims abstract description 19
229910000601 superalloy Inorganic materials 0.000 claims abstract description 19
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
239000000470 constituent Substances 0.000 claims abstract description 15
238000010438 heat treatment Methods 0.000 claims abstract description 15
229910052759 nickel Inorganic materials 0.000 claims abstract description 12
229910017052 cobalt Inorganic materials 0.000 claims abstract description 10
239000010941 cobalt Substances 0.000 claims abstract description 10
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 10
230000004048 modification Effects 0.000 claims abstract description 8
238000012986 modification Methods 0.000 claims abstract description 8
229910052742 iron Inorganic materials 0.000 claims abstract description 7
239000006104 solid solution Substances 0.000 claims abstract description 6
238000000151 deposition Methods 0.000 claims abstract description 5
230000001681 protective effect Effects 0.000 claims abstract description 3
229910045601 alloy Inorganic materials 0.000 claims description 12
239000000956 alloy Substances 0.000 claims description 12
239000011253 protective coating Substances 0.000 claims description 7
238000004519 manufacturing process Methods 0.000 abstract description 2
230000008021 deposition Effects 0.000 abstract 1
230000003647 oxidation Effects 0.000 description 16
238000007254 oxidation reaction Methods 0.000 description 16
238000012360 testing method Methods 0.000 description 10
QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 9
XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
238000009792 diffusion process Methods 0.000 description 8
230000001965 increasing effect Effects 0.000 description 8
239000007789 gas Substances 0.000 description 7
239000000203 mixture Substances 0.000 description 5
WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 4
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
229910052786 argon Inorganic materials 0.000 description 4
229910052735 hafnium Inorganic materials 0.000 description 4
230000004888 barrier function Effects 0.000 description 3
230000000694 effects Effects 0.000 description 3
230000005012 migration Effects 0.000 description 3
238000013508 migration Methods 0.000 description 3
229910052727 yttrium Inorganic materials 0.000 description 3
238000005422 blasting Methods 0.000 description 2
238000010494 dissociation reaction Methods 0.000 description 2
230000005593 dissociations Effects 0.000 description 2
238000004453 electron probe microanalysis Methods 0.000 description 2
VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 2
238000001000 micrograph Methods 0.000 description 2
238000010791 quenching Methods 0.000 description 2
239000007921 spray Substances 0.000 description 2
239000000758 substrate Substances 0.000 description 2
230000002195 synergetic effect Effects 0.000 description 2
244000172730 Rubus fruticosus Species 0.000 description 1
235000017848 Rubus fruticosus Nutrition 0.000 description 1
238000007792 addition Methods 0.000 description 1
230000004075 alteration Effects 0.000 description 1
-1 aluminium halide Chemical class 0.000 description 1
238000004458 analytical method Methods 0.000 description 1
230000008901 benefit Effects 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
230000015556 catabolic process Effects 0.000 description 1
238000006243 chemical reaction Methods 0.000 description 1
239000011247 coating layer Substances 0.000 description 1
230000002950 deficient Effects 0.000 description 1
238000006731 degradation reaction Methods 0.000 description 1
230000002939 deleterious effect Effects 0.000 description 1
230000001627 detrimental effect Effects 0.000 description 1
238000009713 electroplating Methods 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
230000002708 enhancing effect Effects 0.000 description 1
230000007246 mechanism Effects 0.000 description 1
229910052751 metal Inorganic materials 0.000 description 1
229910052961 molybdenite Inorganic materials 0.000 description 1
CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
229910001235 nimonic Inorganic materials 0.000 description 1
230000035515 penetration Effects 0.000 description 1
238000007750 plasma spraying Methods 0.000 description 1
238000007747 plating Methods 0.000 description 1
239000000843 powder Substances 0.000 description 1
229910052761 rare earth metal Inorganic materials 0.000 description 1
238000011160 research Methods 0.000 description 1
230000000717 retained effect Effects 0.000 description 1
229910052702 rhenium Inorganic materials 0.000 description 1
WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
239000000523 sample Substances 0.000 description 1
235000019795 sodium metasilicate Nutrition 0.000 description 1
229910052911 sodium silicate Inorganic materials 0.000 description 1
238000005507 spraying Methods 0.000 description 1
238000004544 sputter deposition Methods 0.000 description 1
238000006467 substitution reaction Methods 0.000 description 1
229910052715 tantalum Inorganic materials 0.000 description 1
229910052719 titanium Inorganic materials 0.000 description 1
229910052721 tungsten Inorganic materials 0.000 description 1
VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1

Images

Classifications

- C—CHEMISTRY; METALLURGY
- C23—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
- C23C—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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
- C23C28/022—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer with at least one MCrAlX layer
- C—CHEMISTRY; METALLURGY
- C23—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
- C23C—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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/58—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in more than one step
- C—CHEMISTRY; METALLURGY
- C23—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
- C23C—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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/028—Including graded layers in composition or in physical properties, e.g. density, porosity, grain size

Definitions

the present invention relates to so-called "MCrAlY” overlay coating systems modified to enhance resistance of superalloy gas turbine components to high temperature oxidation and corrosion attack.
MrAlY is a shorthand way of referring to well known temperature and oxidation/corrosion resistant alloy systems comprising in general one or more of nickel, cobalt and iron as the major "M” constituent, together with chromium and aluminium in quite large amounts, plus (usually) a minor amount of yttrium or other rare earth element.
M nickel, cobalt and iron
chromium and aluminium in quite large amounts, plus (usually) a minor amount of yttrium or other rare earth element.
weight percentage terms such alloys may be broadly defined as having the following compositions:
one well known alloy used as the basis of the present work, has a nominal composition in weight percent of:
This superalloy is available from the International Nickel company, and has the nominal composition in weight percent of: Cr-16%, Al-3.4%, Ti-3.4%, Co-8.5%, W-2.6%, Mo-1.75%, Ta-1.75%, Cb-0.9%, Fe-0.5%, Si-0.3%, Mn-0.2%, C-0.17%, Zr-0.1%, B-0.01%, Ni-Balance.
MCrAlY coatings do act as a barrier between the base material and any outer aluminide coating to limit migration of base material elements, particularly aluminium and chromium, during service.
MCrAlY coatings by the argon shrouded plasma spray process as mentioned above, proprietary to Union Carbide Coatings Service Corporation, of Indianapolis, U.S.A.
the coatings can be aluminised, but must, of course, be heat treated to inter-diffuse them with the base material.
the required extra Al to maintain the concentration of aluminides in the surface layers of the coating could be supplied from the MCrAlY inner portion of the coating.
the Al content is insufficient for the migration mechanism to be able to continue to supply the deficient surface layers with Al for a lengthy period.
MCrAlY coatings with such relatively low aluminium contents are preferred because higher Al contents tend to make the coating brittle in service after the necessary diffusion heat treatment has been carried out.
low temperature in the present context meaning about 550 - 750 °C. This, of course, should be accomplished without any detrimental effect on the high temperature protection afforded by the coatings.
Chromising improves low temperature oxidation/ corrosion resistance of coating systems because Cr oxidises to form chromia, Cr2O3, which forms a protective oxide film at the coating surface.
Cr oxidises to form chromia, Cr2O3, which forms a protective oxide film at the coating surface.
chromising is ineffective to improve high temperature oxidation/corrosion resistance of coating systems. This is because Cr2O3 dissociates into Cr and gaseous CrO3 at temperatures above about 750°C.
the present invention includes a process for providing an M-based superalloy base material, where M is at least one of iron, cobalt and nickel, with a graded multiplex protective coating system containing aluminides in and near its surface, the process comprising the steps of: applying an alloy coating material of the MCrAlY type to the surface of the base material, the Al content of the coating material being in the range 4 to 20 wt.%; optionally, chromising the MCrAlY-type coating to produce a coating with a chromised top layer having extra chromium in solid solution in the M constituent of the coating, the total chromium content in the surface layer of the MCrAlY-type coating after chromising preferably being not more than about 40%, most preferably 35 to 40%; aluminising the coating resulting from the preceding utilised process step to produce a coating having a surface layer containing aluminides of the M constituent of the coating; depositing a platinum layer onto the surface of
the platinum layer has a thickness of 5 to 15 ⁇ m when applied, and the subsequent diffusing heat treatment is conveniently that normally utilised to restore the properties of the base material after the aluminising step.
the subsequent diffusing heat treatment is conveniently that normally utilised to restore the properties of the base material after the aluminising step.
this is one hour diffusion treatment at 1120°C, gas fan quench, and age 24 hours at 845°C.
the thickness of the platinum layer as deposited is very important to the final structure of the above coating.
a deposited platinum layer having a thickness of 10 to 15 ⁇ m gives a structure comprising an MCrAlY coating having a single surface layer containing platinum modified aluminide. This is achieved because during heat treatment the platinum and the underlying aluminides inter-diffuse completely.
the deposited platinum layer should have a thickness of 5 to 10 ⁇ m. This can be achieved because during heat treatment the platinum and the underlying aluminides do not inter-diffuse completely.
the present invention also includes an alternative process for providing an M-based superalloy base material, where M is at least one of iron, cobalt and nickel, with a graded multiplex protective coating system containing aluminides with enhanced aluminium content in and near its surface, the process comprising the steps of: applying an alloy coating material of the MCrAlY type to the surface of the base material, the Al content of the coating material being in the range 4 to 20 wt.%; optionally, chromising the MCrAlY-type coating to produce a coating with a chromised top layer having extra chromium in solid solution in the M constituent of the coating, the total chromium content in the surface layer of the MCrAlY-type coating after chromising preferably being not more than about 40%, most preferably 35 to 40%; depositing a platinum layer onto the surface of the coating resulting from the preceding utilised process step, heat treating the resulting coating to diffuse the platinum layer into the underlying MCrAlY coating, and
the platinum layer has a thickness of 5 to 10 ⁇ m when applied.
the time of aluminising is very important to the final structure of the above coating.
the platinised coating should be aluminised only for a relatively short time of about 4 to 6 hours at the aluminising temperature. This will allow the aluminium to diffuse into the platinised coating only about as far as the platinum has already diffused.
the platinised coating should be aluminised for a relatively long time of about 6 to 12 hours at the aluminising temperature. This will allow the aluminium to diffuse into the platinised coating further than the platinum has already diffused.
the chromising step in the above processes is performed essentially to obtain a large gradient of concentration of Cr in and near the surface of the MCrAlY coating. This increases its low temperature sulphidation resistance.
the overlay coating was first applied to IN738 alloy bars by the previously mentioned argon shrouded plasma spray technique. Extra elements were then introduced into the outer layer of the coating using various methods as described below:
the vapour aluminising process took place in an argon-filled retort vessel, with the parts to be aluminised being suspended in close proximity over packs of aluminising powder which liberate aluminium halide gas when heated. Aluminium from the gas is deposited onto the parts and diffuses into it due to the elevated temperature.
RT69 trade name
Chromalloy U.K. Limited of Bramble Way, Clover Nook Industrial Estate, Somercoates, Derby DE55 4RH, England, or its parent company, Chromalloy Research and Technology, Blaisdell, Orangeburg, NY 10962, U.S.A.
Platinum plating was accomplished by an electroplating process, again available from Chromalloy at the sites mentioned above under the trade name RT22.
Vapour chromising is performed in a similar way to vapour aluminising and is also available from Chromalloy under the trade name CN70.
Coating (4) had been processed in the same way as coating (5), except for the application of the thicker 16 micron platinum plate.
Coating (6) had been chromised and aluminised, but not platinised.
Coatings (3) and (2) had been aluminised and platinised, but not chromised.
Figure 5 shows a typical microstructure of coating (5) at x200 magnification before sulphidation testing, with the various layers indicated.
Figure 6 shows the result of an electron probe microanalysis of this coating, in which the concentration in weight percentage terms of various elements in the coating is graphically plotted against the depth of the coating in microns.
the Cr content of the coating is up to about 40wt.% in the chromised layer, up to about 20 wt.% in the platinum aluminide layer and about 25wt.% retained in the body of the MCrAlY coating.
the highest aluminium content is only about 20 wt.% and is less than this near the surface of the coating in the platinum modified layer.
the results of the electron probe microanalysis as plotted are subject to variation due to experimental error and to local variations in element concentrations in the small scale microstructure.
the method of platinising an MCrAlY coating before aluminising it, in order to gain higher Al concentrations in the platinum modified aluminide surface layer of the finished coating will also plainly be advantageous when utilised without the prior chromising step.

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Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Other Surface Treatments For Metallic Materials (AREA)

EP93306699A 1992-09-05 1993-08-24 Revêtements composites résistant à la corrosion à haute température Expired - Lifetime EP0587341B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GB929218858A GB9218858D0 (en)	1992-09-05	1992-09-05	High temperature corrosion resistant composite coatings
GB9218858		1992-09-05

Publications (2)

Publication Number	Publication Date
EP0587341A1 true EP0587341A1 (fr)	1994-03-16
EP0587341B1 EP0587341B1 (fr)	1996-03-20

Family

ID=10721488

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP93306699A Expired - Lifetime EP0587341B1 (fr)	1992-09-05	1993-08-24	Revêtements composites résistant à la corrosion à haute température

Country Status (4)

Country	Link
EP (1)	EP0587341B1 (fr)
JP (1)	JPH06220607A (fr)
DE (1)	DE69301883T2 (fr)
GB (1)	GB9218858D0 (fr)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0718419A3 (fr) *	1994-12-24	1997-01-08	Rolls Royce Plc	Revêtement de barrière thermique pour superalliage et méthode d'application
EP0683826B1 (fr) *	1993-02-15	1997-05-21	THE SECRETARY OF STATE FOR DEFENCE in Her Britannic Majesty's Gvmnt. of the United Kingdom of Great Britain & Northern Ireland	Couches de barrage a diffusion
EP0784104A1 (fr) *	1995-12-22	1997-07-16	General Electric Company	Superalliage à base de nickel ayant un revêtement de platine-aluminure optimisé
EP0792948A1 (fr) *	1996-02-29	1997-09-03	Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma"	Revêtement de barrière thermique à sous-couche ameliorée et pièces revêtues par une telle barrière thermique
EP0821076A1 (fr) *	1996-07-23	1998-01-28	ROLLS-ROYCE plc	Procédé d'aluminisation d'un superalliage
WO1998024943A1 (fr) *	1996-12-06	1998-06-11	Siemens Aktiengesellschaft	Article comportant un substrat de superalliage et une couche d'enrichissement placee sur ce dernier, et procedes de fabrication de cet article
EP0848079A1 (fr) *	1996-12-12	1998-06-17	Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma"	Procédé de réalisation d'un revêtement protecteur à haute efficacité contre la corrosion à haute température pour superalliages, revêtement protecteur obtenu par ce procédé et pièces protégées par ce revêtement
GB2322382A (en) *	1997-02-22	1998-08-26	Rolls Royce Plc	A coated superalloy article
US5967755A (en) *	1995-07-25	1999-10-19	Siemens Aktiengesellschaft	Product with a metallic basic body and method for manufacturing a product
DE19807636C1 (de) *	1998-02-23	1999-11-18	Mtu Muenchen Gmbh	Verfahren zum Herstellen einer korrosions- und oxidationsbeständigen Schlickerschicht
EP1111091A1 (fr) *	1999-12-21	2001-06-27	United Technologies Corporation	Procédé de formation d'une couche d'aluminure renfermant un élément actif comme revêtement et couche de liaison et article revêtu
EP1127959A1 (fr) *	2000-02-23	2001-08-29	Howmet Research Corporation	Revêtement de barrière thermique et article
US6565931B1 (en)	1999-10-23	2003-05-20	Rolls-Royce Plc	Corrosion protective coating for a metallic article and a method of applying a corrosion protective coating to a metallic article
EP1236812A3 (fr) *	2001-02-06	2004-03-24	General Electric Company	Procédé de rénovation d'une couche comportant un oxyde formé par croissance thermique
GB2421032A (en) *	2004-12-11	2006-06-14	Siemens Ind Turbomachinery Ltd	A method of protecting a component against hot corrosion
US7229701B2 (en)	2004-08-26	2007-06-12	Honeywell International, Inc.	Chromium and active elements modified platinum aluminide coatings
EP1801263A1 (fr) *	2005-12-21	2007-06-27	United Technologies Corporation	Couche de liaison de NiCoCrAly modifié par le platine pour revêtement de barrière thermique
EP2537959A1 (fr)	2011-06-22	2012-12-26	MTU Aero Engines GmbH	Revêtement multicouches anti-usure et procédé de fabrication
US8475598B2 (en)	2005-11-22	2013-07-02	United Technologies Corporation	Strip process for superalloys
EP2796588A1 (fr) *	2013-04-24	2014-10-29	MTU Aero Engines GmbH	Procédé de fabrication d'un revêtement de protection haute température et composant ainsi fabriqué
US8968528B2 (en)	2008-04-14	2015-03-03	United Technologies Corporation	Platinum-modified cathodic arc coating
WO2015088721A1 (fr) *	2013-12-10	2015-06-18	United Technologies Corporation	Revêtement de chromisation sur arc cathodique
WO2018048486A1 (fr) *	2016-06-02	2018-03-15	General Electric Company	Profil aérodynamique à système de revêtement amélioré et ses procédés de formation
EP3388545A1 (fr) *	2017-04-13	2018-10-17	General Electric Company	Surface portante réparée munie d'un système de revêtement amélioré et ses procédés de formation
CN117004912A (zh) *	2023-08-21	2023-11-07	北航成都航空动力创新研究院有限公司	一种Pt改性梯度NiCoCrFeAl高熵涂层及其制备方法

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JP2003073841A (ja) *	2001-08-28	2003-03-12	Kyocera Corp	配線基板およびその製造方法
DE102005060243A1 (de) *	2005-12-14	2007-06-21	Man Turbo Ag	Verfahren zum Beschichten einer Schaufel und Schaufel einer Gasturbine
GB2452515B (en)	2007-09-06	2009-08-05	Siemens Ag	Seal coating between rotor blade and rotor disk slot in gas turbine engine
EP2435595B1 (fr) *	2009-05-26	2020-07-29	Siemens Aktiengesellschaft	Système de revêtement stratifié présentant une couche de mcralx et une couche riche en chrome, ainsi que procédé pour sa production
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Also Published As

Publication number	Publication date
GB9218858D0 (en)	1992-10-21
DE69301883D1 (de)	1996-04-25
EP0587341B1 (fr)	1996-03-20
JPH06220607A (ja)	1994-08-09
DE69301883T2 (de)	1996-08-08

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Publication	Publication Date	Title
EP0587341B1 (fr)	1996-03-20	Revêtements composites résistant à la corrosion à haute température
US5500252A (en)	1996-03-19	High temperature corrosion resistant composite coatings
US4933239A (en)	1990-06-12	Aluminide coating for superalloys
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US6344282B1 (en)	2002-02-05	Graded reactive element containing aluminide coatings for improved high temperature performance and method for producing
US4897315A (en)	1990-01-30	Yttrium enriched aluminide coating for superalloys
US4326011A (en)	1982-04-20	Hot corrosion resistant coatings
CA2165641C (fr)	2007-02-06	Methode pour appliquer un revetement thermique protecteur sur un article en superalliage; revetement thermique protecteur ainsi obtenu
US5989733A (en)	1999-11-23	Active element modified platinum aluminide diffusion coating and CVD coating method
US4070507A (en)	1978-01-24	Platinum-rhodium-containing high temperature alloy coating method
US5334263A (en)	1994-08-02	Substrate stabilization of diffusion aluminide coated nickel-based superalloys
AU695086B2 (en)	1998-08-06	Thermal barrier coating for superalloy article and method of application
US20080003129A1 (en)	2008-01-03	High-temperature coatings with pt metal modified gamma-ni +gamma'-ni3al alloy compositions
US6565931B1 (en)	2003-05-20	Corrosion protective coating for a metallic article and a method of applying a corrosion protective coating to a metallic article
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Alperine et al.	1990	Structure and high temperature performance of various palladium-modified aluminide coatings: a low cost alternative to platinum aluminides
Ajdari et al.	2023	The effect of the MCrAlY composition and aluminizing cycle upon the microstructure and hot corrosion resistance of the over‐aluminized MCrAlY coating on IN738LC alloy substrate
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US4943487A (en)	1990-07-24	Corrosion resistant coating for oxide dispersion strengthened alloys