EP1007753A1 - Procede pour la production d'une couche adhesive destinee a une couche calorifuge - Google Patents

Procede pour la production d'une couche adhesive destinee a une couche calorifuge

Info

Publication number
EP1007753A1
EP1007753A1 EP99936366A EP99936366A EP1007753A1 EP 1007753 A1 EP1007753 A1 EP 1007753A1 EP 99936366 A EP99936366 A EP 99936366A EP 99936366 A EP99936366 A EP 99936366A EP 1007753 A1 EP1007753 A1 EP 1007753A1
Authority
EP
European Patent Office
Prior art keywords
layer
slip
component
producing
carried out
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.)
Granted
Application number
EP99936366A
Other languages
German (de)
English (en)
Other versions
EP1007753B1 (fr
Inventor
Gerhard Wydra
Martin Thoma
Horst Pillhöfer
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.)
MTU Aero Engines AG
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
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 MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of EP1007753A1 publication Critical patent/EP1007753A1/fr
Application granted granted Critical
Publication of EP1007753B1 publication Critical patent/EP1007753B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/30—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes using a layer of powder or paste on the surface
    • 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

Definitions

  • the invention relates to a method for producing an adhesive layer for a thermal insulation layer, which is applied to a component.
  • Thermally or mechanically stressed components are covered with protective layers, e.g. Wear protection layers or thermal insulation layers.
  • An adhesive layer is generally provided between such an outer layer and the component. Such adhesive layers must have a certain roughness and surface topography for clinging to the outer layer.
  • the adhesive layers are e.g. in the case of thermally highly stressed, metallic components, such as turbine blades, between the component and a thermal barrier coating.
  • thermal insulation layers can consist of a base made of zirconium oxide with additions of calcium or magnesium oxide.
  • the adhesive layers must be oxide-free and resistant to hot gas corrosion. Since different thermal expansions generally occur in the thermal barrier coating and the material of the metallic component, these must also be at least partially compensated for by the adhesive layer.
  • Diffusion layers which contain Al, Cr or Si are known as adhesive layers and are produced by means of the so-called powder pack process or out-of-pack process.
  • the disadvantages of the diffusion layers produced using these methods are their brittleness and the limited layer thicknesses of up to approx. 100 ⁇ m.
  • Another known coating layer based on MCrAlY is sprayed onto the component by means of plasma spraying or is vapor-deposited onto the component by means of vaporization of the layer components in the electron beam. Layer thicknesses of up to approx. 300 ⁇ m are achieved. Such processes are very complex and expensive in terms of production technology. Further disadvantages consist in the fact that the layers cannot be applied uniformly on geometrically complicated components, scattering in of the layer composition occur and the layer elements oxidize during spraying or vapor deposition.
  • JP 55-82761 A it is known to expose components of e.g. a gas turbine, by first applying Ni powder provided with a binder to the component and heat-treating, then introducing Cr by chemical vapor deposition or Al by a packing process and finally depositing and heat-treating Pt, Pd or Rh.
  • the object of the present invention is to provide a method for producing a layer of the type described in the introduction, which is as simple and inexpensive to manufacture as possible in terms of production technology.
  • the solution to the object is characterized by the steps of a) producing a slip by mixing at least one of the elements
  • Powder containing Cr, Ni or Ce with a binder b) applying the slip to the component, c) drying the slip at temperatures from room temperature to 300 ° C., and d) alitizing the slip layer, the process being controlled so that the Adhesive layer has a structure with a grain size smaller than 75 microns and a void fraction of jO to 40%.
  • the advantage of the method is that the powder mixed with a binder can be applied in a simple manner to the component to form a layer, without expensive processes such as plasma spraying or electron beam evaporation being required from the plant outlay.
  • the layers produced using this method have a comparatively fine-grained structure with a grain size that is smaller than 75 ⁇ m.
  • the layer has a void fraction of 0 to 40%.
  • the layer has improved thermal fatigue resistance and an advantageous expansion behavior that is fault-tolerant to cracks.
  • additions of elements such as Y are equally distributed and not oxidized.
  • the slip is produced with a powder from MCrAIY or a MCrAlY alloy, where M stands for at least one of the elements Ni, Co, Pt or Pd and instead of Y also Hf or Ce can be applied.
  • the powder is preferably present with a particle size distribution of 5 to 120 ⁇ m.
  • the slip is preferably applied to the component by spraying, pinning or dipping, as a result of which the process can be carried out easily and inexpensively in terms of production technology.
  • locally delimited layers can also be applied to geometrically complex components in a simple manner.
  • no expensive and complex spraying and evaporating systems are required.
  • unlike thermal spraying or electron beam evaporation the problem of oxidation of powder particles does not arise.
  • the drying of the slip, which is present in a suspension together with the organic or inorganic binder, is preferably carried out over 0.5-4 hours, a duration of 1-2 hours having proven advantageous.
  • the slip layer is heat-treated in argon or vacuum at temperatures of 750 to 1200 ° C. before the alitation, wherein the heat treatment can be carried out for 1-6 hours in order to connect the slip layer to the component by means of diffusion.
  • the final step of alitizing the slip layer is carried out at temperatures between 800 to 1200 ° C. and for a period of 1-12 hours.
  • the alitation is used for diffusion bonding and compacting the layer and is carried out in a customary process, for example in the powder pack process, with the introduction of Al.
  • the AI diffuses into the layer and into the base material of the component.
  • the layer is preferably an adhesive layer, to which a heat insulation layer is applied as an outer layer or protective layer, which can be done in the usual way by means of plasma spraying or electron beam vapor deposition.
  • Fig. 1 is a micrograph of the layer before alitizing
  • Fig. 2 is a micrograph of the layer after alitizing.
  • a MCrAlY powder is first mixed in suspension with a conventional inorganic binder to produce a slip.
  • the grain sizes of the powder particles are between 5 and 120 ⁇ m. This creates a flowable, sprayable mass.
  • the viscosity of this mass can e.g. by the grain size of the powder particles used.
  • the M stands for nickel or cobalt or an alloy of the two elements.
  • the proportion of aluminum and chromium is chosen to be as high as possible in order to take advantage of their protective effect against oxidation, which is based on the fact that chromium and aluminum form protective oxides at high temperatures.
  • the slip is then applied to a metallic component, such as a turbine guide vane made of a nickel-based alloy, with a brush to form a layer.
  • a metallic component such as a turbine guide vane made of a nickel-based alloy
  • the thickness and local spread of the layer can be influenced in a simple manner with this type of application.
  • the application could e.g. also done with a spray gun.
  • the slurry in suspension is dried at room temperature for about 1.5 hours.
  • the dried layer is then heat treated in argon at 1000 ° C. for one hour in order to achieve a connection of the layer with the material of the turbine guide vane by means of diffusion. Then the layer is at about 1 100 ° C. Alitated for 4 hours using a conventional method to strengthen the connection to the metallic component by means of diffusion and to compact the layer. Al enters the layer and the base material of the metallic component and thus ensures both a firm connection Layer with the component as well as for a connection of the spherical MCrAlY particles to each other. In addition, the MCrAlY particles sinter together at least partially.
  • Layer 1 shows a layer 2 applied to a metallic component 1, which has been heat-treated but has not yet been treated.
  • Layer 2 clearly shows the spherical structure of the MCrAlY particles as well as the cavities between them.
  • the component 1 and the layer 2 after the alitation step shows the component 1 and the layer 2 after the alitation step.
  • the spherical MCrAlY particles are connected to one another by the penetration of Al into the layer and into the base material of component 1.
  • the MCrAlY particles were sintered together in the alitation step.
  • the layer produced in this way has a significantly improved thermal fatigue resistance in comparison to (adhesive) layers produced in a conventional manner.
  • the active elements, such as Y, are evenly distributed and not oxidized.
  • the layer produced in this way can be used as an adhesive layer, to which a thermal insulation layer is finally applied by plasma spraying or another conventional method.
  • the layer can also be used as a high-quality hot gas corrosion layer without the need for an additional outer protective layer.
  • the properties of the corrosion and oxidation-resistant layer can be varied or improved by extending the alitation process.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un procédé pour la production d'une couche résistant à la corrosion et à l'oxydation, qui est appliquée sur une pièce. Ce procédé doit être réalisé techniquement de manière simple et à faible coût et comporte les étapes suivantes: a) production d'une barbotine par mélange de poudre, contenant au moins un des éléments Cr, Ni ou Ce, avec un liant, b) application de cette barbotine sur la pièce, c) séchage de cette barbotine à des températures allant de la température ambiante à 300 DEG C, et d) calorisation de la couche de barbotine.
EP99936366A 1998-06-03 1999-05-31 Procede pour la production d'une couche adhesive destinee a une couche calorifuge Expired - Lifetime EP1007753B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19824792A DE19824792B4 (de) 1998-06-03 1998-06-03 Verfahren zum Herstellen einer Haftschicht für eine Wärmedämmschicht
DE19824792 1998-06-03
PCT/DE1999/001598 WO1999063126A1 (fr) 1998-06-03 1999-05-31 Procede pour la production d'une couche adhesive destinee a une couche calorifuge

Publications (2)

Publication Number Publication Date
EP1007753A1 true EP1007753A1 (fr) 2000-06-14
EP1007753B1 EP1007753B1 (fr) 2002-04-03

Family

ID=7869775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99936366A Expired - Lifetime EP1007753B1 (fr) 1998-06-03 1999-05-31 Procede pour la production d'une couche adhesive destinee a une couche calorifuge

Country Status (6)

Country Link
US (1) US6709711B1 (fr)
EP (1) EP1007753B1 (fr)
JP (1) JP4469083B2 (fr)
DE (2) DE19824792B4 (fr)
ES (1) ES2176003T3 (fr)
WO (1) WO1999063126A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6228510B1 (en) * 1998-12-22 2001-05-08 General Electric Company Coating and method for minimizing consumption of base material during high temperature service
US6485780B1 (en) * 1999-08-23 2002-11-26 General Electric Company Method for applying coatings on substrates
DE19946650C2 (de) * 1999-09-29 2003-11-27 Mtu Aero Engines Gmbh Verfahren zum Herstellen einer Panzerung für ein metallisches Bauteil
EP1123987A1 (fr) * 2000-02-11 2001-08-16 General Electric Company Revêtements réparables d'aluminures à diffusion
FR2813318B1 (fr) 2000-08-28 2003-04-25 Snecma Moteurs Formation d'un revetement aluminiure incorporant un element reactif, sur un substrat metallique
DE102004034410A1 (de) * 2004-07-16 2006-02-02 Mtu Aero Engines Gmbh Schutzschicht zum Aufbringen auf ein Substrat und Verfahren zur Herstellung einer Schutzschicht
US7316057B2 (en) * 2004-10-08 2008-01-08 Siemens Power Generation, Inc. Method of manufacturing a rotating apparatus disk
JP2007262447A (ja) * 2006-03-27 2007-10-11 Mitsubishi Heavy Ind Ltd 耐酸化膜及びその形成方法、遮熱コーティング、耐熱部材、及びガスタービン
DE102009008510A1 (de) * 2009-02-11 2010-08-12 Mtu Aero Engines Gmbh Beschichtung und Verfahren zum Beschichten eines Werkstücks
DE102013207457B4 (de) 2013-04-24 2017-05-18 MTU Aero Engines AG Verfahren zur Herstellung einer Hochtemperaturschutzbeschichtung
US9587302B2 (en) * 2014-01-14 2017-03-07 Praxair S.T. Technology, Inc. Methods of applying chromium diffusion coatings onto selective regions of a component
DE102015213555A1 (de) * 2015-07-20 2017-03-09 MTU Aero Engines AG Dichtrippenpanzerung und Verfahren zur Herstellung derselben
DE102015221482A1 (de) 2015-11-03 2017-05-04 MTU Aero Engines AG Diffusionsschichten
DE102016009854A1 (de) 2016-08-12 2018-02-15 Dechema Forschungsinstitut Stiftung Bürgerlichen Rechts Langzeitstabiler, lagerfähiger Schlicker für umweltfreundliche Diffusionsbeschichtungen
DE102021127344A1 (de) * 2021-10-21 2023-04-27 MTU Aero Engines AG Verfahren zum Beschichten eines Bauteils eines Flugtriebwerks mit einer Verschleißschutzschicht und Bauteil für ein Flugtriebwerk mit wenigstens einer Verschleißschutzschicht

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US3720537A (en) * 1970-11-25 1973-03-13 United Aircraft Corp Process of coating an alloy substrate with an alloy
GB1427054A (en) 1973-09-19 1976-03-03 Rolls Royce Method of and mixture for aluminishing a metal surface
IT1083665B (it) * 1977-07-14 1985-05-25 Fiat Spa Procedimento per la realizzazione di rivestimenti per alte temperature su metalli e leghe metalliche
JPS5582761A (en) * 1978-12-15 1980-06-21 Hitachi Ltd Coating method for platinum group metal onto cobalt alloy
JPS5754282A (ja) * 1980-09-17 1982-03-31 Mitsubishi Heavy Ind Ltd Tainetsugokinnohyomenshorihoho
JPS58177401A (ja) * 1982-04-12 1983-10-18 Sumitomo Metal Ind Ltd ニツケル，クロム合金被覆法
JPS6067652A (ja) * 1983-09-20 1985-04-18 Asia Kogyo Kk 合金層の形成方法
US4910092A (en) * 1986-09-03 1990-03-20 United Technologies Corporation Yttrium enriched aluminide coating for superalloys
DE4226272C1 (de) * 1992-08-08 1994-02-10 Mtu Muenchen Gmbh Verfahren zur Behandlung von MCrAlZ-Schichten und mit dem Verfahren hergestellte Bauteile
GB9426257D0 (en) * 1994-12-24 1995-03-01 Rolls Royce Plc Thermal barrier coating for a superalloy article and method of application
US5759142A (en) * 1995-01-20 1998-06-02 Bender Machine, Inc. Coated roll for aluminizing processes

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See references of WO9963126A1 *

Also Published As

Publication number Publication date
DE19824792A1 (de) 1999-12-16
ES2176003T3 (es) 2002-11-16
JP2002517608A (ja) 2002-06-18
US6709711B1 (en) 2004-03-23
DE59901109D1 (de) 2002-05-08
JP4469083B2 (ja) 2010-05-26
WO1999063126A1 (fr) 1999-12-09
DE19824792B4 (de) 2005-06-30
EP1007753B1 (fr) 2002-04-03

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