DE19960353A1 - Production of a diffusion barrier comprises producing a ceramic particle dispersion below the surface of a metallic material - Google Patents

Production of a diffusion barrier comprises producing a ceramic particle dispersion below the surface of a metallic material

Info

Publication number
DE19960353A1
DE19960353A1 DE1999160353 DE19960353A DE19960353A1 DE 19960353 A1 DE19960353 A1 DE 19960353A1 DE 1999160353 DE1999160353 DE 1999160353 DE 19960353 A DE19960353 A DE 19960353A DE 19960353 A1 DE19960353 A1 DE 19960353A1
Authority
DE
Germany
Prior art keywords
diffusion barrier
particle dispersion
barrier according
production
diffusion
Prior art date
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.)
Ceased
Application number
DE1999160353
Other languages
German (de)
Inventor
Michael Schuetze
Franz Dettenwanger
Roman Bender
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.)
DECHEMA DEUTSCHE GESELLSCHAFT fur CHEMISCHES APPARATEWESEN CHEMISCHE TECHNIK und BIOTECHNOLOGIE EV
Original Assignee
DECHEMA DEUTSCHE GESELLSCHAFT fur CHEMISCHES APPARATEWESEN CHEMISCHE TECHNIK und BIOTECHNOLOGIE EV
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.)
Filing date
Publication date
Application filed by DECHEMA DEUTSCHE GESELLSCHAFT fur CHEMISCHES APPARATEWESEN CHEMISCHE TECHNIK und BIOTECHNOLOGIE EV filed Critical DECHEMA DEUTSCHE GESELLSCHAFT fur CHEMISCHES APPARATEWESEN CHEMISCHE TECHNIK und BIOTECHNOLOGIE EV
Priority to DE1999160353 priority Critical patent/DE19960353A1/en
Publication of DE19960353A1 publication Critical patent/DE19960353A1/en
Ceased legal-status Critical Current

Links

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
    • C23C10/60—After-treatment
    • 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
    • C23C8/00—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
    • C23C8/02—Pretreatment of the material to be coated
    • 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
    • C23C8/00—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
    • C23C8/80—After-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

Production of a diffusion barrier comprises producing a ceramic particle dispersion below the surface of a metallic material. Preferred Features: The particle dispersion is produced by diffusing metallic elements that form oxides, carbides or nitrides in an oxidizing, carburizing and/or nitriding atmosphere. The particle dispersion consists of ZrO2, Y2O3, Al2O3, CrO3, HfO2 or CeO2.

Description

Die Erfindung betrifft die Herstellung einer Diffusionsbarriere für metal­ lische Werkstoffe mit Schichtsystemen zur Vermeidung von Interdiffusion zwischen Substrat und Schicht.The invention relates to the production of a diffusion barrier for metal mical materials with layer systems to avoid interdiffusion between substrate and layer.

Zur Verbesserung der korrosiven Eigenschaften werden Hochtemperaturwerk­ stoffe häufig mit Schutzschichten versehen. Beispiele hierfür sind Wärme­ dämmschichtsysteme bestehend aus dem Verbund einer metallischen Haftver­ mittlerschicht und einer keramischen Schicht oder Diffusionsschichten zur Anreicherung von schutzschichtbildenden Elementen wie Al, Si oder Cr an der Werkstoffoberfläche. Ein großes Problem bei der Verwendung von Schutz­ schichten stellt hierbei die Interdiffusion bei hohen Temperaturen zwischen Substrat und aufgebrachter Schicht dar, da sich hierdurch insbesondere die chemische Zusammensetzung der Schicht ändert und damit eine Schutzwirkung mit zunehmender Zeit verloren geht (J. H. Wood, E. H. Goldman: Superalloys II, C.T. Sims, N. S. Stoloff, W. C. Hagel eds., Wiley, New York, NY, (1987) 359-384).To improve the corrosive properties are high temperature plant often provide fabrics with protective layers. Examples of this are heat Insulation layer systems consisting of a composite of a metallic adhesive middle layer and a ceramic layer or diffusion layers for Enrichment of protective layer-forming elements such as Al, Si or Cr on the Material surface. A big problem when using protection layers interpose the interdiffusion at high temperatures Substrate and applied layer, since this in particular chemical composition of the layer changes and thus a protective effect is lost with increasing time (J.H. Wood, E.H. Goldman: Superalloys II, C.T. Sims, N. S. Stoloff, W. C. Hagel eds., Wiley, New York, NY, (1987) 359-384).

Die Erfindung bietet die Möglichkeit vor der eigentlichen Beschichtung eine Diffusionsbarriere in den metallischen Werkstoff einzubringen und damit ei­ ne Interdiffusion zu verhindern bzw. signifikant zu verringern. Die Bar­ rierewirkung wird dabei durch das Einbringen einer Dispersionsschicht aus thermodynamisch stabilen, keramischen Teilchen (z. B. Oxide, Nitride, Kar­ bide) erzielt. Wie theoretische Rechnungen hierzu zeigen, erzielt z. B. ei­ ne oxidische Dispersion mit einem Volumenanteil von 70% eine Lebensdauer­ verlängerung einer Diffusionsschutzschicht um den Faktor 2,5 (K. L. Luthra: J. Vac. Sci. Technol. A3 (6) (1985) 2574-2577). Die Erfindung bezieht sich insbesondere auf die Verwendung bei den momentan eingesetzten Superle­ gierungen auf Ni- und Co-Basis, ist aber auch für andere geeignete metalli­ sche Werkstoffe, wie z. B. Stähle denkbar.The invention offers the possibility before the actual coating Introduce diffusion barrier in the metallic material and thus ei prevent or significantly reduce interdiffusion. The bar The effect is achieved by introducing a dispersion layer thermodynamically stable, ceramic particles (e.g. oxides, nitrides, Kar bide) achieved. As theoretical calculations show, z. B. egg ne oxidic dispersion with a volume fraction of 70% has a lifespan Extension of a diffusion protection layer by a factor of 2.5 (K.L. Luthra: J. Vac. Sci. Technol. A3 (6) (1985) 2574-2577). The invention relates focus in particular on the use of the Superle currently in use Ni and Co based alloys, but is also suitable for other suitable metals cal materials, such as B. steels conceivable.

Die Hauptschwierigkeit bei der Herstellung von Diffusionsbarrieren ist das Herstellen der Barriere als "vergrabene" Schicht an der Werkstoffoberfläche in etwa 100-300 µm Tiefe. Dies konnte bislang nur in Modellexperimenten durch Aufbringen der Barriere direkt auf der Substratoberfläche und an­ schließende Diffusionsverschweißung dieser Oberfläche mit einem zweiten Me­ tall erreicht werden (J. A. Nesbitt, J.-F. Lei: Elevated Temperature Coa­ tings, J. M. Hampikian, N. B. Dahotre eds., TMS (1999), 131-142). Dieses Verfahren ist allerdings weitgehend auf Labormaßstäbe begrenzt.The main difficulty in creating diffusion barriers is that Production of the barrier as a "buried" layer on the surface of the material at a depth of about 100-300 µm. So far, this has only been possible in model experiments by applying the barrier directly on the substrate surface and on  closing diffusion welding of this surface with a second measurement tall (J.A. Nesbitt, J.-F. Lei: Elevated Temperature Coa tings, J.M. Hampikian, N.B. Dahotre eds., TMS (1999), 131-142). This However, the process is largely limited to laboratory scales.

Die Erfindung betrifft die Herstellung einer Diffusionsbarriere durch ein neues, aus einer Kombination von im wesentlichen drei Schritten bestehendes Verfahren. Hierbei werden in einem ersten Schritt metallische Elemente, die besonders stabile keramische Phasen wie Oxide, Nitride oder Karbide bilden können, bei hohen Temperaturen und inerter Atmosphäre in die Werkstoffober­ fläche eindiffundiert. Der Werkstoff wird danach in einem zweiten Diffusi­ onsschritt in einer entsprechenden Atmosphäre (oxidierend, aufkohlend und/oder nitrierend) bei hohen Temperaturen ausgelagert, so daß die eindif­ fundierten Elemente zur jeweiligen keramischen Phase (Oxid, Karbid, . . .) im Werkstoff reagieren. Bei geeigneten Systemen können die beiden Schritte auch gemeinsam durchgeführt werden. Damit wird eine Dispersion von kerami­ schen Teilchen in einer metallischen Matrix mit einem zum Werkstoffinneren abnehmenden, diffusionskontrollierten Volumenanteil erzielt. Die Verteilung der keramischen Dispersion nach Tiefe und Volumenanteil kann dabei durch die Wahl der Auslagerungsparameter der beiden ersten Diffusionsschritte, wie Temperatur, Atmosphäre und Diffusionszeit, gesteuert werden. Der letzte Herstellungsschritt besteht in einer teilweisen Auflösung der keramischen Dispersionsteilchen nahe der Werkstoffoberfläche und der Verarmung der im ersten Schritt eingebrachten metallischen Elementen in diesem Bereich. Hierzu wird eine Auslagerung des Werkstoffs in halogenhaltiger Atmosphäre, z. B. Cl2-haltig, durchgeführt. Wie eigene theoretische Berechnungen und Versuche zeigen, führt dies zur Bildung von flüchtigen Phasen der einge­ brachten metallischen Elemente und damit zum Zerfall und Austreiben der Dispersionsphasen im oberflächennahen Bereich. Die Tiefe des Verarmungsbe­ reiches ist dabei durch die Prozeßführung bestimmbar. Alternativ hierzu können die Herstellungsschritte zwei und drei auch vertauscht werden; das heißt zuerst werden die im ersten Schritt eindiffundierten metallischen Elemente teilweise in halogenhaltiger Atmosphäre ausgetrieben und anschlie­ ssend die Dispersionsteilchenbildung durch Auslagerung gemäß Schritt 2 von oben durchgeführt. The invention relates to the production of a diffusion barrier by a new method consisting of a combination of essentially three steps. In a first step, metallic elements, which can form particularly stable ceramic phases such as oxides, nitrides or carbides, are diffused into the surface of the material at high temperatures and an inert atmosphere. The material is then outsourced in a second diffusion step in an appropriate atmosphere (oxidizing, carburizing and / or nitriding) at high temperatures, so that the well-founded elements react to the respective ceramic phase (oxide, carbide,...) In the material. With suitable systems, the two steps can also be carried out together. This results in a dispersion of ceramic particles in a metallic matrix with a decreasing, diffusion-controlled volume fraction towards the interior of the material. The distribution of the ceramic dispersion according to depth and volume fraction can be controlled by selecting the aging parameters of the first two diffusion steps, such as temperature, atmosphere and diffusion time. The last manufacturing step consists of a partial dissolution of the ceramic dispersion particles near the material surface and the depletion of the metallic elements introduced in the first step in this area. For this purpose, the material is outsourced in a halogen-containing atmosphere, e.g. B. Cl 2 containing carried out. As our own theoretical calculations and experiments show, this leads to the formation of volatile phases of the introduced metallic elements and thus to the disintegration and expulsion of the dispersion phases near the surface. The depth of the depletion area can be determined by the process control. Alternatively, manufacturing steps two and three can also be interchanged; that is, the metallic elements diffused in in the first step are partially driven out in a halogen-containing atmosphere and then the dispersion particle formation is carried out by aging in accordance with step 2 from above.

Der metallische Basiswerkstoff (Matrix) selbst ist bei geeigneter Wahl der Prozeßatmosphäre weitgehend inert. Dies trifft z. B. im Falle der auf Ni basierten Superlegierungen und einer Durchführung des dritten Schrittes in Cl2-haltiger Atmosphäre zu, da die Dampfdrücke der Ni-Chloride verglichen mit denen der Chloride der Dispersionselemente sehr viel kleiner sind Ein signifikanter Abtransport von Elementen durch die Bildung der entsprechen­ den flüchtigen Metallchloride findet daher nur für die in Schritt 1 einge­ brachten dispersionsbildenden Elemente statt (Abb. 1). Bei geeigneter Wahl der Prozeßparameter, wie Temperatur, Zeit und Atmosphäre, kann daher ein selektiver Transport der im ersten Schritt eingebrachten metallischen Ele­ mente in die Gasphase erreicht werden. Dadurch wird ein dispersionsfreier Bereich hergestellt, der für die eigentliche Aufbringung der Diffusions­ schutzschicht zur Verfügung steht. Unterhalb dieses Bereichs befinden sich die verbleibenden keramischen Dispersionsteilchen als Diffusionsbarriere.The metallic base material (matrix) itself is largely inert if the process atmosphere is selected appropriately. This applies e.g. B. in the case of Ni-based superalloys and carrying out the third step in a Cl 2 -containing atmosphere, since the vapor pressures of the Ni chlorides are much lower compared to those of the chlorides of the dispersion elements. A significant removal of elements by the formation of the corresponding to the volatile metal chlorides therefore only takes place for the dispersion-forming elements introduced in step 1 ( Fig. 1). With a suitable choice of the process parameters, such as temperature, time and atmosphere, a selective transport of the metallic elements introduced in the first step into the gas phase can therefore be achieved. This creates a dispersion-free area that is available for the actual application of the diffusion protection layer. Below this range are the remaining ceramic dispersion particles as a diffusion barrier.

Claims (7)

1. Herstellung einer Diffusionsbarriere, bestehend aus einer keramischen Teilchendispersion unterhalb der Oberfläche eines metallischen Werkstof­ fes.1. Production of a diffusion barrier consisting of a ceramic Particle dispersion below the surface of a metallic material fes. 2. Diffusionsbarriere nach Anspruch 1, dadurch gekennzeichnet, daß sie die Interdiffusion zwischen einer metallischen oder intermetallischen Ober­ flächenschutzschicht und dem Substrat reduziert.2. Diffusion barrier according to claim 1, characterized in that it Interdiffusion between a metallic or intermetallic surface surface protection layer and the substrate reduced. 3. Diffusionsbarriere nach Anspruch 1, dadurch gekennzeichnet, daß die Teilchendispersion durch Eindiffusion von Oxid-, Karbid- oder Nitrid­ bildenden metallischen Legierungselementen und anschließende Einwirkung einer oxidierend, aufkohlend und/oder nitrierend wirkenden Atmosphäre erzeugt wird.3. Diffusion barrier according to claim 1, characterized in that the Particle dispersion by diffusion of oxide, carbide or nitride forming metallic alloy elements and subsequent action an oxidizing, carburizing and / or nitriding atmosphere is produced. 4. Diffusionsbarriere nach Anspruch 1, dadurch gekennzeichnet, daß die Teilchendispersion und/oder die eindiffundierten Legierungselemente teilweise von der Oberfläche her über die Einwirkung halogenhaltiger At­ mosphären wieder aufgelöst werden, so daß nur ein Dispersionsband bzw. ein angereichertes Band an Legierungselementen in einer Tiefe von bis zu 1 mm unter der Werkstoffoberfläche zurückbleibt.4. Diffusion barrier according to claim 1, characterized in that the Particle dispersion and / or the diffused alloy elements partly from the surface due to the influence of halogenated At spheres are dissolved again, so that only one dispersion band or an enriched band of alloying elements at a depth of up to Remains 1 mm below the material surface. 5. Diffusionsbarriere nach Anspruch 1, dadurch gekennzeichnet, daß die Teilchendispersion aus Oxiden, Karbiden oder Nitriden besteht.5. Diffusion barrier according to claim 1, characterized in that the Particle dispersion consists of oxides, carbides or nitrides. 6. Diffusionsbarriere nach Anspruch 1, dadurch gekennzeichnet, daß die Teilchendispersion aus ZrO2, Y2O3, Al2O3, CrO3, HfO2 oder CeO2 besteht.6. Diffusion barrier according to claim 1, characterized in that the particle dispersion consists of ZrO 2 , Y 2 O 3 , Al 2 O 3 , CrO 3 , HfO 2 or CeO 2 . 7. Diffusionsbarriere nach Anspruch 1, dadurch gekennzeichnet, daß als Substratwerkstoff vorzugsweise Hochtemperaturwerkstoffe auf Ni- bzw. Co- Basis sowie warmfeste und hitzebeständige Stähle verwendet werden.7. Diffusion barrier according to claim 1, characterized in that as Substrate material preferably high temperature materials on Ni or Co Base as well as heat-resistant and heat-resistant steels can be used.
DE1999160353 1999-12-14 1999-12-14 Production of a diffusion barrier comprises producing a ceramic particle dispersion below the surface of a metallic material Ceased DE19960353A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999160353 DE19960353A1 (en) 1999-12-14 1999-12-14 Production of a diffusion barrier comprises producing a ceramic particle dispersion below the surface of a metallic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999160353 DE19960353A1 (en) 1999-12-14 1999-12-14 Production of a diffusion barrier comprises producing a ceramic particle dispersion below the surface of a metallic material

Publications (1)

Publication Number Publication Date
DE19960353A1 true DE19960353A1 (en) 2001-06-21

Family

ID=7932670

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999160353 Ceased DE19960353A1 (en) 1999-12-14 1999-12-14 Production of a diffusion barrier comprises producing a ceramic particle dispersion below the surface of a metallic material

Country Status (1)

Country Link
DE (1) DE19960353A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1676938A1 (en) * 2004-12-30 2006-07-05 Siemens Aktiengesellschaft Method of manufacturing a component part of a turbine and a component of a turbine
DE102014006750A1 (en) 2014-05-08 2015-11-12 Mahle International Gmbh A diffusion barrier device and method of making a diffusion barrier device

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2418879A1 (en) * 1973-04-23 1974-10-31 Gen Electric IMPROVED COATING SYSTEM FOR SUPER ALLOYS
EP0237153A1 (en) * 1986-02-06 1987-09-16 The University Of Dayton Process for removing protective coatings and bonding layers from metal parts
DE3816310A1 (en) * 1987-06-26 1989-01-12 Bbc Brown Boveri & Cie Process for enriching titanium in the immediate surface zone of a component consisting of a nickel-based superalloy containing at least 2.0 % by weight of titanium, and use of the surface enriched according to the process
DE4204447A1 (en) * 1991-02-19 1992-08-27 Grumman Aerospace Corp COATING PROCESS
DE4210019C2 (en) * 1992-03-27 1994-02-10 Thyssen Stahl Ag, 47166 Duisburg, De
DE4040061C2 (en) * 1990-07-04 1994-07-07 Mitsubishi Electric Corp Process for the corrosion-preventing production of a structured connecting layer
US5334416A (en) * 1991-12-30 1994-08-02 Pohang Iron & Steel Co., Ltd. Heat resistant stainless steel coated by diffusion of aluminum and the coating method thereof
US5660886A (en) * 1995-04-24 1997-08-26 Mc Donnell Douglas Corp Method for forming in situ diffusion barrier while diffusing aluminum through nickel-boron
WO1997041275A1 (en) * 1996-04-30 1997-11-06 Westaim Technologies Inc. Surface alloyed high temperature alloys
EP0814179A1 (en) * 1996-06-17 1997-12-29 General Electric Company Method for removing a diffusion coating from a nickel base alloy
US5891267A (en) * 1997-01-16 1999-04-06 General Electric Company Thermal barrier coating system and method therefor
US5922409A (en) * 1994-02-28 1999-07-13 Sermatech International, Inc. Method for forming a coating substantially free of deleterious refractory elements on a nickel- and chromium-based superalloy

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2418879A1 (en) * 1973-04-23 1974-10-31 Gen Electric IMPROVED COATING SYSTEM FOR SUPER ALLOYS
EP0237153A1 (en) * 1986-02-06 1987-09-16 The University Of Dayton Process for removing protective coatings and bonding layers from metal parts
DE3816310A1 (en) * 1987-06-26 1989-01-12 Bbc Brown Boveri & Cie Process for enriching titanium in the immediate surface zone of a component consisting of a nickel-based superalloy containing at least 2.0 % by weight of titanium, and use of the surface enriched according to the process
DE4040061C2 (en) * 1990-07-04 1994-07-07 Mitsubishi Electric Corp Process for the corrosion-preventing production of a structured connecting layer
DE4204447A1 (en) * 1991-02-19 1992-08-27 Grumman Aerospace Corp COATING PROCESS
US5334416A (en) * 1991-12-30 1994-08-02 Pohang Iron & Steel Co., Ltd. Heat resistant stainless steel coated by diffusion of aluminum and the coating method thereof
DE4210019C2 (en) * 1992-03-27 1994-02-10 Thyssen Stahl Ag, 47166 Duisburg, De
US5922409A (en) * 1994-02-28 1999-07-13 Sermatech International, Inc. Method for forming a coating substantially free of deleterious refractory elements on a nickel- and chromium-based superalloy
US5660886A (en) * 1995-04-24 1997-08-26 Mc Donnell Douglas Corp Method for forming in situ diffusion barrier while diffusing aluminum through nickel-boron
WO1997041275A1 (en) * 1996-04-30 1997-11-06 Westaim Technologies Inc. Surface alloyed high temperature alloys
EP0814179A1 (en) * 1996-06-17 1997-12-29 General Electric Company Method for removing a diffusion coating from a nickel base alloy
US5891267A (en) * 1997-01-16 1999-04-06 General Electric Company Thermal barrier coating system and method therefor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1676938A1 (en) * 2004-12-30 2006-07-05 Siemens Aktiengesellschaft Method of manufacturing a component part of a turbine and a component of a turbine
WO2006072479A1 (en) * 2004-12-30 2006-07-13 Siemens Aktiengesellschaft Method for producing a turbine part and a turbine part
US8518485B2 (en) 2004-12-30 2013-08-27 Siemens Aktiengesellschaft Process for producing a component of a turbine, and a component of a turbine
DE102014006750A1 (en) 2014-05-08 2015-11-12 Mahle International Gmbh A diffusion barrier device and method of making a diffusion barrier device

Similar Documents

Publication Publication Date Title
DE3243283C2 (en)
DE2632739C3 (en) Process for the thermal spraying of a self-adhesive nickel-aluminum or nickel-titanium coating on a metal substrate
DE2233700C2 (en)
DE60302396T3 (en) Procedures for the production of thermal barrier coating with nitride particles
EP1161573B1 (en) Tool with a molybdenum sulphide coating and method for producing the same
DE69819276T2 (en) A method for improving the oxidation and corrosion resistance of a superalloy article and a superalloy article thus manufactured
EP3472366B1 (en) Self-healing heat damping layers and method for producing same
Narita et al. On the high-temperature corrosion of Fe-Cr alloys in sulfur vapor
CH664377A5 (en) DECORATIVE BLACK WEAR PROTECTIVE LAYER.
DE3811907C1 (en)
DE1954366C2 (en) Method and device for the production of hard coatings from titanium and / or tantalum compounds
DE19960353A1 (en) Production of a diffusion barrier comprises producing a ceramic particle dispersion below the surface of a metallic material
DE2151127C3 (en) Process for depositing a metallization pattern and its application
DE69818409T2 (en) Gas mixture for plasma spraying and its use for refractory plasma spraying
DE3820063C1 (en) Structural bodies and process for their manufacture
DE1942292B2 (en) PROCESS FOR DEPOSITING A COATING
EP1591549B1 (en) Method for repairing local damage to a thermal barrier coating of a component
DE3726073C1 (en) Process for the production of thin-walled semi-finished products and their uses
DE3145236C2 (en) Process for the production of deformation-resistant oxidic protective layers
EP1129231B1 (en) Method for vacuum coating metal components
DE10048764A1 (en) Structural part containing ceramic, fiber-reinforced ceramic and/or carbon fiber-reinforced carbon, for heat shield e.g. of re-entry space vehicle, is coated and impregnated with fine transition metal oxide, nitride or oxynitride particles
DE2756825C3 (en) Process for the production of diffusion coatings
DE3737361A1 (en) ALLOYS CONTAINING NICKEL, METHOD FOR THEIR PRODUCTION AND THEIR USE
DE946060C (en) Containers and other apparatus parts that come into contact with iodine and iodides
DE3390480T1 (en) Process for applying heat protective coatings to metals and the product obtained therewith

Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8122 Nonbinding interest in granting licenses declared
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: C23F 17/00 AFI20051017BHDE

8120 Willingness to grant licenses paragraph 23
8131 Rejection