US3677789A - Protective diffusion layer on nickel and/or cobalt-based alloys - Google Patents

Protective diffusion layer on nickel and/or cobalt-based alloys Download PDF

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Publication number
US3677789A
US3677789A US856539A US3677789DA US3677789A US 3677789 A US3677789 A US 3677789A US 856539 A US856539 A US 856539A US 3677789D A US3677789D A US 3677789DA US 3677789 A US3677789 A US 3677789A
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United States
Prior art keywords
nickel
cobalt
parts
aluminum
based alloys
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Expired - Lifetime
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US856539A
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English (en)
Inventor
Karl Bungardt
Gunter Lehnert
Helmut W Meinhardt
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Deutsche Edelstahlwerke AG
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Deutsche Edelstahlwerke AG
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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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • 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
    • C23C10/52—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in one step
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12875—Platinum group metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12944—Ni-base component

Definitions

  • This invention relates to the production of high-temperature corrosion and scale-resistant protective diffusion layers on parts made of high-temperature nickel and/or cobalt-based alloys, and to methods of producing such layers.
  • Parts exposed to the action of corrosive media at high temperatures as well as to mechanical stress are conventionally made of high temperature alloys based on nickel and/or cobalt, and are provided with a protective layer produced by diffusion to render them resistant to corrosion and scaling and thereby to prolong their useful life.
  • a protective layer produced by diffusion to render them resistant to corrosion and scaling and thereby to prolong their useful life.
  • aluminum is preferentially diffused into the surface of such parts.
  • the present invention provides a protective layer by diffusing into the surface of the parts that are to be protected aluminum and one or more metals of the platinum group of elements, particularly platinum, rhodium and palladium. Tests have shown that parts provided with a protective layer according to the invention have a longer life in service compared with parts into which aluminum alone has been diffused in conventional manner.
  • one or more metals of the platinum groups is first applied to the surface of the part that is to be protected in the form of a coating at least 7p. thick, and in a following diffusion heat treatment aluminum is then diffused into the surface together with the metal or metals of the platinum group already deposited.
  • the surface of the part that is to be protected is first coated with a metal or metals of the platinum group, and this metal or these metals of the platinum group are then diffused into the surface simultaneously with the aluminum.
  • the said coating of one or more metals of the platinum group may be provided either electrolytically, or by dipping, spraying, vapor deposition or by mechanical plating.
  • the metal forming this coating together with the aluminum then diffuses into the surface of the part that is to be protected and forms a high-temperature scale-resistant protective layer on the part.
  • the parts that have been provided with a coating of one or more metals of the platinum group may be embedded for the diffusion treatment in a powder mixture containing metallic aluminum.
  • diffusion may be effected by heating between about 900 C. and about 1200 C. for about 2 hours to about 10 hours.
  • test pieces consisted of an alloy containing 0.12% carbon, less than 0.25% silicon, less than 0.25% manganese, 13.5% chromium, 4.5% molybdenum, 6.25% aluminum, 0.3% niobium/tantalum, less than 1.0% cobalt, 0.9% titanium, less than 1.5% iron, traces of boron and zirconium, the remainder being nickel.
  • test pieces that had been provided with the protective diffusion layer were first subjected to a preliminary treatment consisting of wet blasting, degreasing in a cyanide bath l0 seconds cathodically and 30 seconds anodically, followed by rinsing in water and anodic pickling at 40 C. first 3 seconds in a 10% by volume H280.,l bath followed by rinsing in water and then 30 seconds cathodically and 10 seconds anodically, pickling in a 10% by weight solution NaOH bath, followed by rinsing in water.
  • test pieces were then platinum coated in a bath consisting of 13 g./l. of hexachloroplatinic acid, HzPtCls, 45 g./l. of triammonium phosphate, (NH4)3PO4, 240 g./l. of di-sodium hydrogen phosphate, Na2HPO4.
  • the temperature of the bath was 65 C., the current density 9.0 amp/dm. and the Voltage 1.5 volts. Different thicknesses of the platinum coating were provided by altering the treatment times accordingly.
  • the parts were heat treated first for 2 hours at 260 C. and then for 3 hours at 400 C. to drive off hydrogen and to reduce the hardness of the platinum coating. Finally the surface was degreased by rinsing in methanol.
  • test pieces which had thus been heated according to the invention, together with the control pieces, were then submitted to an aluminum dliffusion treatment.
  • the pieces were packed into a powder mixture consisting of 5% aluminum and 95% A1203 and diffusion treated for 21/2 hours at 1100 C. under hydrogen as a protective gas.
  • the accompanying diagram reveals the difference in scale formation between completely untreated parts, parts that had been merely diffusion treated with aluminumy and parts that had been provided with the protective layer according to the invention, the considerable superiority of which is apparent.
  • the untreated parts underwent considerable deterioration due to scaling after 20 to 30 hours at the test temperature of 1l00 C.
  • parts that had been subjected to aluminum diffusion in conventional manner did not begin to scale until much later.
  • the scaling resistance of the parts provided with the protective layer according to the invention was several times better than the best of the comparative test pieces.
  • the parts still disclosed significant scaling after 1000 hours.
  • Turbine blades made of the above-specied base material provided with a 7n platinumv coating by electrodeposition in the above-described manner and then submitted to the above-described aluminum dilfusion treatment to form a layer having a total depth of 65u were also subjected to thermal shock tests to examine their liability to crack.
  • the turbine blades were aiiixed to a wheel which was rotated.
  • Two burners operated with kerosene generated a peak temperature of 1050" C. on the surface of the turbine blades. After having passed through the burner zones the turbine blades were quenched to about 150 C. by exposing them to a blast of compressed air. The heating time in each case was 60 seconds and the quenching time was also 60 seconds.
  • the turbine blades were subjected to mechanical stresses by mounting them eccentrically on the rotating wheel and thereby subjecting the trailing edges of the turbine blades to tension.
  • the turbine blades provided with the protective diffusion layer according to the invention shown no damage due to cracking or chipping.
  • the appearance of the protective surface layer when inspected by the naked eye was still excellent after 10,000 temperature reversals, whereas after the fel number of temperature reversals blades that had been provided with other conventional types of surface protection had scaled surfaces as well as cracks.
  • a process according to claim 1 wherein the heating is at about 900 C. to about 1200 C. for about 2 to about 10 hours.

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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)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)
US856539A 1968-09-14 1969-09-10 Protective diffusion layer on nickel and/or cobalt-based alloys Expired - Lifetime US3677789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1796175A DE1796175C2 (de) 1968-09-14 1968-09-14 Hochtemperaturkorrosions- und zunderbeständige Diffusionsschutzschicht auf Gegenständen aus hochwarmfesten Legierungen auf Nickel- und/oder Kobaltbasis

Publications (1)

Publication Number Publication Date
US3677789A true US3677789A (en) 1972-07-18

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US856539A Expired - Lifetime US3677789A (en) 1968-09-14 1969-09-10 Protective diffusion layer on nickel and/or cobalt-based alloys

Country Status (9)

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US (1) US3677789A (enrdf_load_stackoverflow)
AT (1) AT285277B (enrdf_load_stackoverflow)
BE (1) BE736266A (enrdf_load_stackoverflow)
CH (1) CH518376A (enrdf_load_stackoverflow)
DE (1) DE1796175C2 (enrdf_load_stackoverflow)
FR (1) FR2018097A1 (enrdf_load_stackoverflow)
GB (1) GB1210026A (enrdf_load_stackoverflow)
NL (1) NL165223C (enrdf_load_stackoverflow)
SE (1) SE344766B (enrdf_load_stackoverflow)

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837901A (en) * 1970-08-21 1974-09-24 Gen Electric Diffusion-coating of nickel-base superalloy articles
US3876456A (en) * 1973-03-16 1975-04-08 Olin Corp Catalyst for the reduction of automobile exhaust gases
US3961910A (en) * 1973-05-25 1976-06-08 Chromalloy American Corporation Rhodium-containing superalloy coatings and methods of making same
US3979273A (en) * 1975-05-27 1976-09-07 United Technologies Corporation Method of forming aluminide coatings on nickel-, cobalt-, and iron-base alloys
US3999956A (en) * 1975-02-21 1976-12-28 Chromalloy American Corporation Platinum-rhodium-containing high temperature alloy coating
US4123566A (en) * 1976-12-20 1978-10-31 Electric Power Research Institute, Inc. NA/S Cell reactant container with metal aluminide coating
US4221845A (en) * 1978-03-04 1980-09-09 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler Process for pretreatment of light metals before galvanization
WO1982001726A1 (en) * 1980-11-17 1982-05-27 Metal Techn Inc Turbine Improved interdispersed phase coatings method
WO1983003988A1 (en) * 1982-05-07 1983-11-24 Turbine Metal Technology, Inc. Corrosion, erosion and wear resistant alloy structures and method thereof
DE3329908A1 (de) * 1982-11-01 1984-05-03 Turbine Components Corp., 06405 Branford, Conn. Verfahren zur bildung einer schutzdiffusionsschicht auf teilen aus einer nickel-, kobalt- und eisenlegierung
US4962005A (en) * 1988-10-26 1990-10-09 Office National D'etudes Et De Recherches Aerospatiales Method of protecting the surfaces of metal parts against corrosion at high temperature, and a part treated by the method
US4965095A (en) * 1979-03-30 1990-10-23 Alloy Surfaces Company, Inc. Method for refurbishing used jet engine hot section airfoils
US5132185A (en) * 1991-06-21 1992-07-21 General Electric Company Ceramic articles having heat-sealable metallic coatings
US5427866A (en) * 1994-03-28 1995-06-27 General Electric Company Platinum, rhodium, or palladium protective coatings in thermal barrier coating systems
US5492726A (en) * 1993-11-19 1996-02-20 Walbar Inc. Platinum group silicide modified aluminide coating process and products
US5500252A (en) * 1992-09-05 1996-03-19 Rolls-Royce Plc High temperature corrosion resistant composite coatings
EP0780484A1 (en) 1995-12-22 1997-06-25 General Electric Company Thermal barrier coated articles and method for coating
US5645893A (en) * 1994-12-24 1997-07-08 Rolls-Royce Plc Thermal barrier coating for a superalloy article and method of application
US5650235A (en) * 1994-02-28 1997-07-22 Sermatech International, Inc. Platinum enriched, silicon-modified corrosion resistant aluminide coating
US5652044A (en) * 1992-03-05 1997-07-29 Rolls Royce Plc Coated article
US5658614A (en) * 1994-10-28 1997-08-19 Howmet Research Corporation Platinum aluminide CVD coating method
US5667663A (en) * 1994-12-24 1997-09-16 Chromalloy United Kingdom Limited Method of applying a thermal barrier coating to a superalloy article and a thermal barrier coating
EP0821075A1 (en) * 1996-07-23 1998-01-28 Howmet Research Corporation Platinum modified aluminide diffusion coating and method
US5902638A (en) * 1993-03-01 1999-05-11 General Electric Company Method for producing spallation-resistant protective layer on high performance alloys
US6066405A (en) * 1995-12-22 2000-05-23 General Electric Company Nickel-base superalloy having an optimized platinum-aluminide coating
EP1099775A1 (en) * 1999-11-12 2001-05-16 General Electric Company Platinum aluminide coating for cobalt-based superalloys
WO2001098561A2 (en) 2000-06-21 2001-12-27 Howmet Research Corporation Graded platinum diffusion aluminide coating
US6458473B1 (en) 1997-01-21 2002-10-01 General Electric Company Diffusion aluminide bond coat for a thermal barrier coating system and method therefor
US6495271B1 (en) 1993-03-01 2002-12-17 General Electric Company Spallation-resistant protective layer on high performance alloys
US20040229072A1 (en) * 2002-12-16 2004-11-18 Murphy Kenneth S. Nickel base superalloy
US20070122647A1 (en) * 2005-11-28 2007-05-31 Russo Vincent J Duplex gas phase coating
US20080003129A1 (en) * 2003-05-16 2008-01-03 Iowa State University Research Foundation, Inc. High-temperature coatings with pt metal modified gamma-ni +gamma'-ni3al alloy compositions
US20080057339A1 (en) * 2004-08-18 2008-03-06 Iowa State University Reasearch Foundation, Inc. High-temperature coatings and bulk alloys with pt metal modified gamma-ni + gamma'-ni3al alloys having hot-corrosion resistance
EP1939318A2 (en) 2006-12-27 2008-07-02 General Electric Company Carburization process for stabilizing nickel-based superalloys
EP1956116A1 (en) 1998-07-30 2008-08-13 Howmet Research Corporation Removal of thermal barrier coatings
US20090226613A1 (en) * 2004-12-15 2009-09-10 Iowa State University Research Foundation, Inc. Methods for making high-temperature coatings having pt metal modified gamma-ni + gamma'-ni3al alloy compositions and a reactive element
EP2796593A2 (en) 2013-04-26 2014-10-29 Howmet Corporation Internal airfoil component electroplating
EP2886684A1 (en) 2013-12-20 2015-06-24 Howmet Corporation Internal turbine component electroplating
US10358700B2 (en) 2013-09-18 2019-07-23 Ihi Corporation Thermal barrier-coated Ni alloy component and manufacturing method thereof
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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EP0567755B1 (en) * 1992-04-29 1996-09-04 WALBAR INC. (a Delaware Corporation) Improved diffusion coating process and products
US5897966A (en) * 1996-02-26 1999-04-27 General Electric Company High temperature alloy article with a discrete protective coating and method for making
FR2757181B1 (fr) * 1996-12-12 1999-02-12 Snecma Procede de realisation d'un revetement protecteur a haute efficacite contre la corrosion a haute temperature pour superalliages, revetement protecteur obtenu par ce procede et pieces protegees par ce revetement
DE19807636C1 (de) 1998-02-23 1999-11-18 Mtu Muenchen Gmbh Verfahren zum Herstellen einer korrosions- und oxidationsbeständigen Schlickerschicht
DE19820944A1 (de) * 1998-04-30 1999-11-11 Manuel Hertter Katalysator
DE10336989B4 (de) * 2003-08-12 2006-11-09 Mtu Aero Engines Gmbh Verfahren zur Herstellung von Heissgas-Korrosionsschutzschichten

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US3345197A (en) * 1963-08-09 1967-10-03 Howmet Corp Aluminizing process and composition
FR1369892A (fr) * 1963-09-25 1964-08-14 Coast Metals Procédé d'application de revêtements métalliques

Cited By (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837901A (en) * 1970-08-21 1974-09-24 Gen Electric Diffusion-coating of nickel-base superalloy articles
US3876456A (en) * 1973-03-16 1975-04-08 Olin Corp Catalyst for the reduction of automobile exhaust gases
US3961910A (en) * 1973-05-25 1976-06-08 Chromalloy American Corporation Rhodium-containing superalloy coatings and methods of making same
US3999956A (en) * 1975-02-21 1976-12-28 Chromalloy American Corporation Platinum-rhodium-containing high temperature alloy coating
US4070507A (en) * 1975-02-21 1978-01-24 Chromalloy American Corporation Platinum-rhodium-containing high temperature alloy coating method
US3979273A (en) * 1975-05-27 1976-09-07 United Technologies Corporation Method of forming aluminide coatings on nickel-, cobalt-, and iron-base alloys
US4123566A (en) * 1976-12-20 1978-10-31 Electric Power Research Institute, Inc. NA/S Cell reactant container with metal aluminide coating
US4221845A (en) * 1978-03-04 1980-09-09 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler Process for pretreatment of light metals before galvanization
US4965095A (en) * 1979-03-30 1990-10-23 Alloy Surfaces Company, Inc. Method for refurbishing used jet engine hot section airfoils
WO1982001726A1 (en) * 1980-11-17 1982-05-27 Metal Techn Inc Turbine Improved interdispersed phase coatings method
US4439470A (en) * 1980-11-17 1984-03-27 George Kelly Sievers Method for forming ternary alloys using precious metals and interdispersed phase
US4352840A (en) * 1980-11-17 1982-10-05 Turbine Metal Technology, Inc. Interdispersed phase coatings method
WO1983003988A1 (en) * 1982-05-07 1983-11-24 Turbine Metal Technology, Inc. Corrosion, erosion and wear resistant alloy structures and method thereof
DE3329908A1 (de) * 1982-11-01 1984-05-03 Turbine Components Corp., 06405 Branford, Conn. Verfahren zur bildung einer schutzdiffusionsschicht auf teilen aus einer nickel-, kobalt- und eisenlegierung
US4501776A (en) * 1982-11-01 1985-02-26 Turbine Components Corporation Methods of forming a protective diffusion layer on nickel, cobalt and iron base alloys
US4962005A (en) * 1988-10-26 1990-10-09 Office National D'etudes Et De Recherches Aerospatiales Method of protecting the surfaces of metal parts against corrosion at high temperature, and a part treated by the method
US5132185A (en) * 1991-06-21 1992-07-21 General Electric Company Ceramic articles having heat-sealable metallic coatings
US5652044A (en) * 1992-03-05 1997-07-29 Rolls Royce Plc Coated article
US5846605A (en) * 1992-03-05 1998-12-08 Rolls-Royce Plc Coated Article
US5500252A (en) * 1992-09-05 1996-03-19 Rolls-Royce Plc High temperature corrosion resistant composite coatings
US6495271B1 (en) 1993-03-01 2002-12-17 General Electric Company Spallation-resistant protective layer on high performance alloys
US5902638A (en) * 1993-03-01 1999-05-11 General Electric Company Method for producing spallation-resistant protective layer on high performance alloys
US5688607A (en) * 1993-11-19 1997-11-18 Walbar Inc. Platinum group silicide modified aluminide coated metal superalloy body
US5492726A (en) * 1993-11-19 1996-02-20 Walbar Inc. Platinum group silicide modified aluminide coating process and products
US5650235A (en) * 1994-02-28 1997-07-22 Sermatech International, Inc. Platinum enriched, silicon-modified corrosion resistant aluminide coating
US5427866A (en) * 1994-03-28 1995-06-27 General Electric Company Platinum, rhodium, or palladium protective coatings in thermal barrier coating systems
US5658614A (en) * 1994-10-28 1997-08-19 Howmet Research Corporation Platinum aluminide CVD coating method
EP0787221A4 (en) * 1994-10-28 1999-05-06 Howmet Corp CVD PROCESS FOR COATING PLATINUM ALUMINIDE
US5645893A (en) * 1994-12-24 1997-07-08 Rolls-Royce Plc Thermal barrier coating for a superalloy article and method of application
US5667663A (en) * 1994-12-24 1997-09-16 Chromalloy United Kingdom Limited Method of applying a thermal barrier coating to a superalloy article and a thermal barrier coating
US5763107A (en) * 1994-12-24 1998-06-09 Rolls-Royce Plc Thermal barrier coating for a superalloy article
US5981091A (en) * 1994-12-24 1999-11-09 Rolls-Royce Plc Article including thermal barrier coated superalloy substrate
US6066405A (en) * 1995-12-22 2000-05-23 General Electric Company Nickel-base superalloy having an optimized platinum-aluminide coating
US20070082221A1 (en) * 1995-12-22 2007-04-12 General Electric Company Nickel-base superalloy having an optimized platinum-aluminide coating
EP0780484A1 (en) 1995-12-22 1997-06-25 General Electric Company Thermal barrier coated articles and method for coating
US20040025978A1 (en) * 1995-12-22 2004-02-12 Schaeffer Jon C. Nickel-base superalloy having an optimized platinum-aluminide coating
US20040197597A1 (en) * 1995-12-22 2004-10-07 Schaeffer Jon C. Nickel-base superalloy having an optimized platinum-aluminide coating
US7083827B2 (en) 1995-12-22 2006-08-01 General Electric Company Nickel-base superalloy having an optimized platinum-aluminide coating
US20070048538A1 (en) * 1995-12-22 2007-03-01 General Electric Company Nickel-base superalloy having an optimized platinum-aluminide coating
EP0821075A1 (en) * 1996-07-23 1998-01-28 Howmet Research Corporation Platinum modified aluminide diffusion coating and method
US6136451A (en) * 1996-07-23 2000-10-24 Howmet Research Corporation Platinum modified aluminide diffusion coating and method
US5788823A (en) * 1996-07-23 1998-08-04 Howmet Research Corporation Platinum modified aluminide diffusion coating and method
US6458473B1 (en) 1997-01-21 2002-10-01 General Electric Company Diffusion aluminide bond coat for a thermal barrier coating system and method therefor
EP1956116A1 (en) 1998-07-30 2008-08-13 Howmet Research Corporation Removal of thermal barrier coatings
EP1099775A1 (en) * 1999-11-12 2001-05-16 General Electric Company Platinum aluminide coating for cobalt-based superalloys
EP2253464A2 (en) 2000-06-21 2010-11-24 Howmet Research Corporation Graded platinum diffusion aluminide coating
WO2001098561A2 (en) 2000-06-21 2001-12-27 Howmet Research Corporation Graded platinum diffusion aluminide coating
US20040229072A1 (en) * 2002-12-16 2004-11-18 Murphy Kenneth S. Nickel base superalloy
US20080003129A1 (en) * 2003-05-16 2008-01-03 Iowa State University Research Foundation, Inc. High-temperature coatings with pt metal modified gamma-ni +gamma'-ni3al alloy compositions
US20080057338A1 (en) * 2003-05-16 2008-03-06 Iowa State University Research Foundation, Inc. High-temperature coatings with pt metal modified gamma-ni + gamma'-ni3al alloy compositions
US20080057340A1 (en) * 2003-05-16 2008-03-06 Iowa State University Research Foundation, Inc. High-temperature coatings with pt metal modified gamma-ni +gamma'-ni3al alloy compositions
US20110229735A1 (en) * 2003-05-16 2011-09-22 Iowa State University Research Foundation, Inc. High-temperature coatings with pt metal modified gamma-ni+gamma'-ni3al alloy compositions
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CH518376A (de) 1972-01-31
DE1796175B1 (de) 1971-07-01
SE344766B (enrdf_load_stackoverflow) 1972-05-02
AT285277B (de) 1970-10-27
NL165223C (nl) 1981-03-16
NL165223B (nl) 1980-10-15
GB1210026A (en) 1970-10-28
NL6913933A (enrdf_load_stackoverflow) 1970-03-17
BE736266A (enrdf_load_stackoverflow) 1969-12-31
DE1796175C2 (de) 1974-05-30
FR2018097A1 (enrdf_load_stackoverflow) 1970-05-29

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