EP1644550B1 - Procede et dispositif de fabrication d'un revetement resistant a la corrosion et a l'oxydation et composant comportant un tel revetement - Google Patents

Procede et dispositif de fabrication d'un revetement resistant a la corrosion et a l'oxydation et composant comportant un tel revetement Download PDF

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Publication number
EP1644550B1
EP1644550B1 EP04738855A EP04738855A EP1644550B1 EP 1644550 B1 EP1644550 B1 EP 1644550B1 EP 04738855 A EP04738855 A EP 04738855A EP 04738855 A EP04738855 A EP 04738855A EP 1644550 B1 EP1644550 B1 EP 1644550B1
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EP
European Patent Office
Prior art keywords
paste
component
coated
housing
regions
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.)
Expired - Lifetime
Application number
EP04738855A
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German (de)
English (en)
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EP1644550A1 (fr
Inventor
Josef Linska
Heinrich Walter
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
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MTU Aero Engines GmbH
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Publication of EP1644550A1 publication Critical patent/EP1644550A1/fr
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Anticipated expiration legal-status Critical
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    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/02—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
    • 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
    • C23C10/60—After-treatment

Definitions

  • the invention relates to a method for producing a corrosion-resistant and oxidation-resistant coating according to the preamble of claim 1.
  • the invention further relates to an apparatus for producing a corrosion-resistant and oxidation-resistant coating according to the preamble of patent claim 13.
  • components In particular components of gas turbines, at high temperatures, their free surfaces are exposed to highly corrosive and oxidizing conditions.
  • such components may consist of a nickel base or cobalt base superalloy.
  • the components are provided with coatings that are produced from metal powders.
  • a method for producing a corrosion-resistant and oxidation-resistant slurry layer is known.
  • a slip material is prepared by mixing a binder solution with a starting powder containing aluminum or chromium and an additive containing at least one element of aluminum, platinum, palladium or silicon, wherein the addition powder is not aluminum for a starting powder containing only aluminum includes.
  • the slip material thus produced is then applied to a component and then cured.
  • a subsequent to the curing heat treatment serves to diffuse the slip layer into the component.
  • a feed powder and a starting powder are mixed and this mixture of different metal groups is applied to the component in one step.
  • US-A-4528215 discloses a process for producing a corrosion and oxidation resistant coating by alitizing, in which various Areas are alitiert with different materials. However, partial alitization is not possible with such a method.
  • the present invention is based on the problem to provide a method and an apparatus for producing a corrosion-resistant and oxidation-resistant coating, so that a partial Alit mich the components is possible.
  • the method comprises the following steps: providing a paste which contains, in addition to a binder as metal, exclusively at least one metal of the platinum group; preferably diluting the paste; subsequent application of the preferably diluted paste to the component; subsequent drying and heat treatment of the component coated with the paste; then alitating the component coated with the paste by means of an aliquoting paste or an aliquoting powder, the aliquoting paste or the aliquoting powder being completely coated with a covering powder under the influence of gravity.
  • a paste containing as metal exclusively metals of the platinum group applied in a first step on the component and after drying and heat treatment of the coated with the paste Component in a second step to make Alitieren the coated with the paste component.
  • the core of the present invention is to select on the one hand a corresponding paste and on the other hand to perform the Alitieren in an independent process step. It has been found that effective protection of turbine blades against oxidation and corrosion, in particular sulfidation or high-temperature corrosion, can be ensured with the coating that results.
  • the paste in addition to a binder as metal platinum and / or palladium.
  • a binder as metal platinum and / or palladium.
  • Particularly preferred is the following Composition of the undiluted paste: palladium in an amount of 25-35% by weight, platinum in an amount of 25-35% by weight, terpineol in an amount of 15-25% by weight, resin (rosin) in one Proportion of 10-20% by weight, and turpentine in an amount of 1-5% by weight.
  • the device according to the invention for producing a corrosion-resistant and oxidation-resistant coating is characterized by the features of independent claim 13.
  • the surfaces of the component to be coated are blasted so as to obtain a metallically bright surface on the component.
  • blasting of course, any other method can be used to obtain a bright metallic surface.
  • the paste contains in addition to a binder as metal exclusively at least one metal of the platinum group.
  • the paste may be a high purity platinum paste containing terpineol as binder and platinum exclusively as metal.
  • the composition of this high purity platinum paste contains platinum in an amount of 85 to 90% by weight and terpineol in a proportion of 10 to 15% by weight.
  • platinum-palladium paste contains palladium in a proportion of 25 to 35 wt .-%, platinum in an amount of 25 to 35 wt .-%, alpha terpineol in an amount of 25 to 35 wt .-%, resin in a proportion of 10 to 20 Wt .-% and turpentine in a proportion of 1 to 5 wt .-%.
  • the paste is then applied to the component. It is preferably diluted before applying the paste. This provides a dilute, low-viscosity paste that can be better applied to the component.
  • Thinner for example, is a turpentine oil. Per 5 grams of undiluted paste, preferably 2 to 4 ml, especially 2.5 to 3 ml, turpentine oil is used as a thinner.
  • the paste is applied exclusively to selected areas of the turbine blades, namely the non-flow surfaces of the turbine blades. It has thus been found that in the so-called damper pocket region of turbine blades with the coating according to the invention a particularly effective protection against sulfidation or high-temperature corrosion can be achieved. Also, cavities in cooling channels of gas turbine blades can be so well protected against sulfidation.
  • the paste After the paste has been applied to the component or to corresponding sections of the component, the paste is hardened or dried with a subsequent heat treatment.
  • the heat treatment serves to diffuse the metals of the paste into the component. This can be done by known from the prior art diffusion annealing or vacuum annealing.
  • the application, drying and heat treatment (diffusion) of the paste is repeated until a defined or desired coating of the component with the metals of the paste, ie with platinum and / or palladium, has been achieved.
  • the paste with the metal or metals of the platinum group is not applied galvanically, but rather as a so-called slip layer by brushing, spraying or the like. This can be done with less effort and therefore has manufacturing advantages.
  • the component coated with the paste is then alitiert, i. E. coated with aluminum.
  • Alitizing by means of an aliquoting paste or aliquoting powder may be performed as gas diffusion alitizing or powder pack alitating. The details of these Alitier psychologist are familiar to the person mentioned here. The Alitieren takes place only after the optionally repeated application, drying and heat treatment of the paste-coated component.
  • Fig. 1 When alitating, for example, as in Fig. 1 be shown. So shows Fig. 1 a coated with the paste component 10, which is positioned in a device 11 according to the invention.
  • the component 10 is a turbine blade.
  • a so-called damper pocket region 12 of the turbine blade is to be provided with the coating.
  • an airfoil 13 protrudes downwards out of the device 11 according to the invention, the damper pocket region 12 and a blade root 14 adjoining the damper pocket region 12 are located inside the device 11 according to the invention.
  • the damper pocket region 12 of the component 10, which has already been coated with the paste, is surrounded by an aliquot paste 15.
  • the Alitierpaste 15 is covered by a covering powder 16, wherein the cover powder 16 is formed as Al 2 O 3 and mixed with an activator. This can compensate for a possible activator loss during the Alitiervorgangs.
  • the covering powder 16 acts under Gravity on the damper pocket area 12 of the turbine blade 10 to be coated.
  • the Alitieren takes place at 700 ° C to 1150 ° C under a protective gas atmosphere. Argon or helium can be used as inert gas or inert gas.
  • At the in Fig. 1 Alitiervorgang shown is the powder pack Alitieren.
  • the device 11 is designed as a capsule-shaped container made of sheet metal, which has a passage opening for the blade leaf 13 in its bottom region.
  • the aliquoting paste 15 and the covering powder 16 together with the activator can be introduced into the container.
  • a charging device 17, which in Fig. 1 is arranged laterally next to the device 10.
  • a top view of three apparatus 10 is shown, which is moved by conveyors 18 arranged laterally next to the apparatuses 10 in the direction of the arrow 19 and thereby moved through different stations 20, 21 and 22.
  • the charging device 17 is positioned in the exemplary embodiment shown, as indicated by the arrow 23.
  • a furnace (not shown) for Alitieren under a protective gas atmosphere is arranged.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating By Spraying Or Casting (AREA)

Claims (14)

  1. Procédé de fabrication d'un revêtement résistant à la corrosion et résistant à l'oxydation pour les zones d'une pale d'une turbine à gaz non exposées au courant, par préparation d'une pâte contenant exclusivement au moins un métal du groupe du platine en plus d'un liant métallique, application au moins partielle de la pâte sur le composant, et par séchage et traitement thermique du composant au moins partiellement revêtu de la pâte avant aluminisation au moins partielle du composant au moins partiellement revêtu de la pâte au moyen d'une pâte d'aluminisation ou d'une poudre d'aluminisation sur la zone à revêtir du composant, caractérisé en ce que la pâte d'aluminisation ou la poudre d'aluminisation est entièrement recouverte d'une poudre de couverture sous l'effet de la gravité.
  2. Procédé selon la revendication 1, caractérisé en ce que la pâte est diluée avant application.
  3. Procédé selon la revendication 1 ou la revendication 2, caractérisé en ce que le métal contenu dans la pâte sont exclusivement du platine et/ou du palladium.
  4. Procédé selon l'une ou plusieurs des revendication 1 à 3, caractérisé en ce que le métal contenu dans la pâte comprend exclusivement du platine, et le liant comprend du terpinéol.
  5. Procédé selon l'une ou plusieurs des revendication 1 à 3, caractérisé en ce que les métaux contenus dans la pâte sont exclusivement du platine et du palladium.
  6. Procédé selon la revendication 5, caractérisé en ce que la pâte non diluée présente la composition suivants :
    → palladium dans une proportion de 25 à 35 % en poids,
    → platine dans une proportion de 25 à 35 % en poids,
    → terpinéol dans une proportion de 15 à 25 % en poids,
    → résine dans une proportion de 10 à 20 % en poids, et
    → térébenthine dans une proportion de 1 à 5 % en poids.
  7. Procédé selon l'une ou plusieurs des revendication 1 à 3, caractérisé en ce que la pâte est diluée avec une huile de térébenthine jusqu'à devenir une pâte fluide.
  8. Procédé selon l'une ou plusieurs des revendication 1 à 5, caractérisé en ce que l'application de la pâte sur le composant est effectuée par vaporisation, application au pinceau, bain, trempage ou par sérigraphie.
  9. Procédé selon l'une ou plusieurs des revendication 1 à 8, caractérisé en ce que le composant est grenaillé avant application de la pâte.
  10. Procédé selon l'une ou plusieurs des revendication 1 à 9, caractérisé en ce que, lors du traitement thermique du composant au moins partiellement revêtu de la pâte, le métal ou chaque métal contenu dans la pâte est diffusé à l'intérieur du composant.
  11. Procédé selon l'une ou plusieurs des revendication 1 à 10, caractérisé en ce que La préparation et l'application de la pâte sont répétées jusqu'à ce que le composant présente un revêtement de platine et/ou de palladium défini, et en ce que l'aluminisation est effectuée ensuite.
  12. Procédé selon la revendication 1, caractérisé en ce que la zone non exposée au courant est la zone d'amortisseur/de caisson de la pale de turbine.
  13. Dispositif de fabrication d'un revêtement résistant à la corrosion et résistant à l'oxydation pour les zones d'une pale d'une turbine à gaz non exposées au courant, avec un carter pour le logement du composant au moins partiellement revêtu de la pâte, en l'occurrence la pale de turbine (10), caractérisé en ce que le carter est réalisé de manière à pouvoir mettre en place le composant (10) dans le carter de telle sorte qu'une pâte d'aluminisation (15) plus une poudre de couverture (16) à appliquer dans le carter agissent sous l'effet de la gravité sur la zone (12) à revêtir du composant (10), et où il est en outre prévu que le carter comporte une ouverture de passage dans une zone de fond, de telle manière que le composant (10) réalisé comme pale de turbine fasse passer un aubage (13) vers le bas par l'ouverture de passage et qu'une zone d'amortisseur/de caisson (12) de la pale de turbine à revêtir pénètre dans le carter avec le pied de pale (14).
  14. Dispositif selon la revendication 13, caractérisé en ce qu'un dispositif de chargement (17) est positionné au niveau d'une station (20), au moyen duquel le carter et le composant (10) mis en place dans le carter sont déplacés, ledit dispositif de chargement (17) servant à appliquer la pâte d'aluminisation (15) et la poudre de couverture (16) dans le carter.
EP04738855A 2003-07-11 2004-07-03 Procede et dispositif de fabrication d'un revetement resistant a la corrosion et a l'oxydation et composant comportant un tel revetement Expired - Lifetime EP1644550B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10331351A DE10331351A1 (de) 2003-07-11 2003-07-11 Verfahren und Vorrichtung zum Herstellen einer korrosionsbeständigen und oxidationsbeständigen Beschichtung sowie Bauteil mit einer solchen Beschichtung
PCT/DE2004/001425 WO2005007922A1 (fr) 2003-07-11 2004-07-03 Procede et dispositif de fabrication d'un revetement resistant a la corrosion et a l'oxydation et composant comportant un tel revetement

Publications (2)

Publication Number Publication Date
EP1644550A1 EP1644550A1 (fr) 2006-04-12
EP1644550B1 true EP1644550B1 (fr) 2010-03-17

Family

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EP04738855A Expired - Lifetime EP1644550B1 (fr) 2003-07-11 2004-07-03 Procede et dispositif de fabrication d'un revetement resistant a la corrosion et a l'oxydation et composant comportant un tel revetement

Country Status (6)

Country Link
US (1) US20070036897A1 (fr)
EP (1) EP1644550B1 (fr)
JP (1) JP2007506859A (fr)
AT (1) ATE461297T1 (fr)
DE (2) DE10331351A1 (fr)
WO (1) WO2005007922A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10347363A1 (de) * 2003-10-11 2005-05-12 Mtu Aero Engines Gmbh Verfahren zur lokalen Alitierung, Silizierung oder Chromierung von metallischen Bauteilen
US7749570B2 (en) * 2006-12-20 2010-07-06 General Electric Company Method for depositing a platinum-group-containing layer on a substrate
DE102009008510A1 (de) * 2009-02-11 2010-08-12 Mtu Aero Engines Gmbh Beschichtung und Verfahren zum Beschichten eines Werkstücks
EP2299593A1 (fr) 2009-09-18 2011-03-23 Nxp B.V. Dispositif d'ondes acoustiques de volume couplées latéralement
EP2647735A1 (fr) * 2012-04-03 2013-10-09 MTU Aero Engines GmbH Revêtements d'aluminure ou de chromide dans des espaces creux

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528215A (en) * 1973-01-31 1985-07-09 Alloy Surfaces Company, Inc. Diffusion aluminizing of cobalt-base superalloys
JPS58193357A (ja) * 1982-05-01 1983-11-11 Showa Denko Kk 金属の表面硬化方法
US4978558A (en) * 1988-06-10 1990-12-18 United Technologies Corporation Method for applying diffusion coating masks
JPH05117066A (ja) * 1991-10-23 1993-05-14 Ishikawajima Harima Heavy Ind Co Ltd 炭素系母材の耐酸化コーテイング方法
JP3927250B2 (ja) * 1995-08-16 2007-06-06 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー 窒化アルミニウム基板用厚膜導体ペースト組成物
US6022632A (en) * 1996-10-18 2000-02-08 United Technologies Low activity localized aluminide coating
US6485780B1 (en) * 1999-08-23 2002-11-26 General Electric Company Method for applying coatings on substrates
US6305077B1 (en) * 1999-11-18 2001-10-23 General Electric Company Repair of coated turbine components
US6589668B1 (en) * 2000-06-21 2003-07-08 Howmet Research Corporation Graded platinum diffusion aluminide coating
JP3785028B2 (ja) * 2000-07-28 2006-06-14 三菱重工業株式会社 熱ｃｖｄ処理方法

Also Published As

Publication number Publication date
EP1644550A1 (fr) 2006-04-12
ATE461297T1 (de) 2010-04-15
DE502004010914D1 (de) 2010-04-29
JP2007506859A (ja) 2007-03-22
US20070036897A1 (en) 2007-02-15
WO2005007922A1 (fr) 2005-01-27
DE10331351A1 (de) 2005-01-27

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