EP2201151A2 - Wear protection coating - Google Patents

Wear protection coating

Info

Publication number
EP2201151A2
EP2201151A2 EP08840008A EP08840008A EP2201151A2 EP 2201151 A2 EP2201151 A2 EP 2201151A2 EP 08840008 A EP08840008 A EP 08840008A EP 08840008 A EP08840008 A EP 08840008A EP 2201151 A2 EP2201151 A2 EP 2201151A2
Authority
EP
European Patent Office
Prior art keywords
layer
protection coating
wear protection
smoothing layer
smoothing
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.)
Withdrawn
Application number
EP08840008A
Other languages
German (de)
French (fr)
Inventor
Wolfgang Eichmann
Falko Heutling
Thomas Uihlein
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 Aero Engines 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 Aero Engines GmbH filed Critical MTU Aero Engines GmbH
Publication of EP2201151A2 publication Critical patent/EP2201151A2/en
Withdrawn legal-status Critical Current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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/347—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with layers adapted for cutting tools or wear applications
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24364—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] with transparent or protective coating

Definitions

  • the invention relates to a wear protection coating, in particular an erosion protective coating, preferably for gas turbine components, according to the preamble of patent claim 1.
  • Components subject to flow mechanics such as gas turbine components, are subject to wear as a result of oxidation, corrosion and erosion. Erosion is a wear process caused by solids moving in the gas flow.
  • wear protection coatings are required which protect the components against wear, in particular against erosion, corrosion and oxidation.
  • EP0674020B1 a multilayer, erosion-resistant coating for the surfaces of substrates is known.
  • the erosion-resistant coating disclosed therein provides a wear-resistant coating consisting of multiple multilayer systems applied repetitively on the substrate to be coated.
  • the multi-layer systems applied in repetition are each formed from two different layers, namely on the one hand of a layer of a metallic material and on the other hand of a layer of titanium diboride.
  • EP0366289A1 discloses another erosion resistant and corrosion resistant coating for a substrate. Also according to EP 0366289 A1, the wear protection coating is formed from a plurality of multilayer systems applied in repetition on the substrate to be coated, each multilayer system again consisting of two different layers, namely a metallic layer, for example titanium, and a ceramic layer, for Example of titanium nitride.
  • EP0562108B1 Another erosion-resistant wear protection coating is known from EP0562108B1.
  • the wear protection coating disclosed there is again several formed in repetition on a multi-layer system applied to a substrate to be coated.
  • FIG. 4 of EP0562108B1 discloses a wear protection coating formed from a plurality of repeatedly applied multilayer coating systems, each multilayer coating system consisting of four layers.
  • the wear protection coatings are preferably applied by vapor deposition to the surface of a component to be coated and thus protected, whereby the roughness on an outer, flow-relevant surface of the component can be increased by vapor deposition of a wear protection coating.
  • the increase in roughness is aerodynamically unfavorable, since flow losses can form.
  • an increase in roughness can result in faster and more severe contamination, as deposits of contaminants on rough surfaces can more readily deposit.
  • An increased roughness also causes an accelerated attack of the surface of the component in case of erosion by hard particles. There is therefore a need to improve wear protection coatings.
  • the present invention is based on the problem to provide a novel anti-wear coating.
  • an outer layer is formed as a smoothing layer, which compensates for unevenness or roughness and / or defects of the wear protection coating.
  • the present invention it is proposed to apply to the actual wear protection coating on the outside a smoothing layer which compensates for unevenness or roughness or even defects of the wear protection coating.
  • This provides a highly smooth superfinish surface which results in a reduction in aerodynamic losses and contamination of the coated component counteracts.
  • the erosion resistance can be improved.
  • an improvement in the oxidation and corrosion resistance is expected.
  • the smoothing layer is formed as a sol-gel layer, which has a thickness in the order of the unevenness or roughness and / or defects to be compensated.
  • FIG. 1 shows a highly schematic cross-section through an inventive wear protection coating according to an embodiment of the invention.
  • the present invention relates to a wear protection coating, in particular an erosion protection coating, for a surface to be protected of a fluid mechanical stressed component, in particular a component of a gas turbine, such. B. a blade or vane of a gas turbine.
  • FIG. 1 shows a highly schematic cross-section through a wear-resistant coating 10 according to the invention, which is applied to an outer surface 11 of a fluidically stressed component 12, in particular a gas turbine blade.
  • An outer layer of the wear protection coating 10 according to the invention is designed as a smoothing layer 13, wherein the smoothing layer 13 compensates for unevenness or roughness and / or imperfections of the actual wear protection coating.
  • the smoothing layer 13 in this case has a thickness which is in the order of magnitude of the unevenness or roughness and / or defects to be compensated.
  • the smoothing layer 13 preferably has a thickness between 1 .mu.m and 10 .mu.m.
  • the thickness of the smoothing layer is between 5 ⁇ m and 10 ⁇ m.
  • the thickness of the smoothing layer 13 may also be between 1 ⁇ m and 5 ⁇ m.
  • the smoothing layer 13 forms the outer layer or layer of the wear protection coating according to the invention, wherein in the exemplary embodiment of FIG. 1 two multilayer systems 14, 15 are applied to the surface 11 of the component 12 to be coated, and wherein each multilayer system 14 15 comprises a relatively soft, metallic layer 16 and a relatively hard ceramic layer 17.
  • the outer smoothing layer 13 is applied to the outer, relatively hard, ceramic layer 17 of the outer multilayer system 15.
  • the smoothing layer 13 of the wear protection coating according to the invention is designed as a sol-gel layer.
  • a liquid phase, a so-called SoI, z. B. by dipping, spraying or brushing applied to the outer layer 17 of the outer multi-layer system 15 and then dried by tempering and cured.
  • the liquid phase namely the sol
  • transforms into a solid phase into a so-called gel.
  • the drying and curing can be combined with a heat treatment.
  • the application of the smoothing layer 13 formed as a sol-gel layer to the outer hard layer 17 of the multilayer system 15 has the advantage that the relatively hard layer 17 provides a supporting effect for the relatively thin sol-gel layer and thus the smoothing layer 13, which in particular supports the connection of the smoothing layer 13 under mechanical stress.
  • the smoothing layer 13 there is preferably provided a silicate-based or carbon-based or metal oxide-based or polymer-based sol-gel layer. It is therefore within the meaning of the present invention as an outer layer of a wear protection coating to provide a smoothing layer 13, which compensates for unevenness or roughness and / or defects of the actual wear protection coating.
  • the smoothing layer 13 is preferably formed as a sol-gel layer, with a thickness which is in the order of the unevenness or roughness and / or defects to be compensated.
  • the smoothing layer 13 is used when the wear protection coating is formed from a plurality of multilayer coating systems, wherein the smoothing layer is then applied to the outer layer of the outer multilayer coating system.

Abstract

The invention relates to a wear protection coating (10), particularly erosion protection coating, which is applied to a surface (11) to be protected of a component (12) subject to fluid mechanics stress, particularly a gas turbine component. According to the invention, an outer layer is configured as a smoothing layer (13), which compensates for unevenness or roughness and/or imperfections of the wear protection coating.

Description

Verschleißschutzbeschichtung Wear-resistant coating
Die Erfindung betrifft eine Verschleißschutzbeschichtung, insbesondere eine Erosions- schutzbeschichtung, vorzugsweise für Gasturbinenbauteile, nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a wear protection coating, in particular an erosion protective coating, preferably for gas turbine components, according to the preamble of patent claim 1.
Strömungsmechanisch belastete Bauteile, wie zum Beispiel Gasturbinenbauteile, unterliegen einem Verschleiß infolge von Oxidation, Korrosion und Erosion. Bei der Erosion handelt es sich um einen Verschleißvorgang, der durch in der Gasströmung mitbewegte, feste Stoffe hervorgerufen wird. Um die Lebensdauer von strömungsmechanisch belasteten Bauteilen zu verlängern, sind Verschleißschutzbeschichtungen erforderlich, welche die Bauteile vor Verschleiß schützen, insbesondere gegen Erosion, Korrosion und Oxidation.Components subject to flow mechanics, such as gas turbine components, are subject to wear as a result of oxidation, corrosion and erosion. Erosion is a wear process caused by solids moving in the gas flow. In order to extend the service life of fluidically loaded components, wear protection coatings are required which protect the components against wear, in particular against erosion, corrosion and oxidation.
Aus der EP0674020B1 ist ein mehrfachlagiger, erosionsresistenter Überzug für die Oberflächen von Substraten bekannt. Der dort offenbarte, erosionsresistente Überzug stellt eine Verschleißschutzbeschichtung bereit, die aus mehreren in Wiederholung auf dem zu beschichtenden Substrat aufgebrachten Mehrlagenschichtsystemen besteht. So sind bei der EP0674020B1 die in Wiederholung aufgebrachten Mehrlagenschichtsysteme aus jeweils zwei unterschiedlichen Schichten gebildet, nämlich einerseits aus einer Schicht eines metallischen Materials und andererseits aus einer Schicht aus Titandiborid.From EP0674020B1 a multilayer, erosion-resistant coating for the surfaces of substrates is known. The erosion-resistant coating disclosed therein provides a wear-resistant coating consisting of multiple multilayer systems applied repetitively on the substrate to be coated. Thus, in EP0674020B1, the multi-layer systems applied in repetition are each formed from two different layers, namely on the one hand of a layer of a metallic material and on the other hand of a layer of titanium diboride.
Die EP0366289A1 offenbart eine weitere erosionsbeständige sowie korrosionsbeständige Beschichtung für ein Substrat. Auch gemäß der EP0366289 Al wird die Verschleißschutzbeschichtung aus mehreren, in Wiederholung auf dem zu beschichteten Substrat aufgebrachten Mehrlagenschichtsystemen gebildet, wobei jedes Mehrlagenschichtsystem wiederum aus zwei unterschiedlichen Schichten besteht, nämlich aus einer metallischen Schicht, zum Beispiel aus Titan, und aus einer keramischen Schicht, zum Beispiel aus Titannitrid.EP0366289A1 discloses another erosion resistant and corrosion resistant coating for a substrate. Also according to EP 0366289 A1, the wear protection coating is formed from a plurality of multilayer systems applied in repetition on the substrate to be coated, each multilayer system again consisting of two different layers, namely a metallic layer, for example titanium, and a ceramic layer, for Example of titanium nitride.
Eine weitere erosionsbeständige Verschleißschutzbeschichtung ist aus der EP0562108B1 bekannt. So ist die dort offenbarte Verschleißschutzbeschichtung wiederum aus mehreren in Wiederholung auf einem zu beschichtenden Substrat aufgebrachten Mehrlagenschicht- systemen gebildet. Die Fig. 4 der EP0562108B1 offenbart dabei eine aus mehreren, in Wiederholung aufgebrachten Mehrlagenschichtsystemen gebildete Verschleißschutzbe- schichtung, wobei jedes Mehrlagenschichtsystem aus vier Schichten besteht.Another erosion-resistant wear protection coating is known from EP0562108B1. Thus, the wear protection coating disclosed there is again several formed in repetition on a multi-layer system applied to a substrate to be coated. FIG. 4 of EP0562108B1 discloses a wear protection coating formed from a plurality of repeatedly applied multilayer coating systems, each multilayer coating system consisting of four layers.
Die Verschleißschutzbeschichtungen werden vorzugsweise auf die zu beschichtende und damit zu schützende Oberfläche eines Bauteils aufgedampft, wobei sich durch das Aufdampfen einer Verschleißschutzbeschichtung die Rauhigkeit an einer äußeren, strömungsrelevanten Oberfläche des Bauteils erhöhen kann. Die Erhöhung der Rauhigkeit ist aerodynamisch ungünstig, da sich Strömungsverluste ausbilden können. Weiterhin kann eine Erhöhung der Rauhigkeit zu einer schnelleren und stärkeren Verschmutzung führen, da sich Ablagerungen von Verunreinigungen auf rauen Oberflächen leichter anlagern können. Eine erhöhte Rauhigkeit bewirkt auch einen beschleunigten Angriff der Oberfläche des Bauteils bei Erosion durch harte Partikel. Es besteht daher ein Bedarf Verschleißschutzbeschichtungen zu verbessern.The wear protection coatings are preferably applied by vapor deposition to the surface of a component to be coated and thus protected, whereby the roughness on an outer, flow-relevant surface of the component can be increased by vapor deposition of a wear protection coating. The increase in roughness is aerodynamically unfavorable, since flow losses can form. Furthermore, an increase in roughness can result in faster and more severe contamination, as deposits of contaminants on rough surfaces can more readily deposit. An increased roughness also causes an accelerated attack of the surface of the component in case of erosion by hard particles. There is therefore a need to improve wear protection coatings.
Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zu Grunde, eine neuartige Verschleißschutzbeschichtung zu schaffen.On this basis, the present invention is based on the problem to provide a novel anti-wear coating.
Dieses Problem wird dadurch gelöst, dass die eingangs genannte Verschleißschutzbeschichtung durch die Merkmale des kennzeichnenden Teils des Patentanspruchs 1 weitergebildet ist. Erfindungsgemäß ist eine äußere Schicht als Glättungsschicht ausgebildet, welche Unebenheiten bzw. Rauhigkeiten und/oder Fehlstellen der Verschleißschutzbeschichtung ausgleicht.This problem is solved in that the aforementioned wear protection coating is further developed by the features of the characterizing part of patent claim 1. According to the invention, an outer layer is formed as a smoothing layer, which compensates for unevenness or roughness and / or defects of the wear protection coating.
Mit der hier vorliegenden Erfindung wird vorgeschlagen, auf die eigentliche Verschleißschutzbeschichtung außen eine Glättungsschicht aufzutragen, welche Unebenheiten bzw. Rauhigkeiten oder auch Fehlstellen der Verschleißschutzbeschichtung ausgleicht. Hierdurch wird eine hochglatte Superfinish-Oberfiäche bereitgestellt, die eine Reduktion von aerodynamischen Verlusten bewirkt und einer Verschmutzung des beschichteten Bauteils entgegenwirkt. Darüber hinaus kann die Erosionsbeständigkeit verbessert werden. Zusätzlich ist mit einer Verbesserung der Oxidations- und Korrosionsbeständigkeit zu rechnen.With the present invention, it is proposed to apply to the actual wear protection coating on the outside a smoothing layer which compensates for unevenness or roughness or even defects of the wear protection coating. This provides a highly smooth superfinish surface which results in a reduction in aerodynamic losses and contamination of the coated component counteracts. In addition, the erosion resistance can be improved. In addition, an improvement in the oxidation and corrosion resistance is expected.
Vorzugsweise ist die Glättungsschicht als Sol-Gel-Schicht ausgebildet, die eine Dicke in der Größenordnung der auszugleichenden Unebenheiten bzw. Rauhigkeiten und/oder Fehlstellen aufweist.Preferably, the smoothing layer is formed as a sol-gel layer, which has a thickness in the order of the unevenness or roughness and / or defects to be compensated.
Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:
Fig. 1 einen stark schematisierten Querschnitt durch eine erfindungsgemäße Ver- schleißschutzbeschichtung nach einem Ausführungsbeispiel der Erfindung.1 shows a highly schematic cross-section through an inventive wear protection coating according to an embodiment of the invention.
Die hier vorliegende Erfindung betrifft eine Verschleißschutzbeschichtung, insbesondere eine Erosionsschutzbeschichtung, für eine zu schützende Oberfläche eines strömungsmechanisch beanspruchten Bauteils, insbesondere eines Bauteils einer Gasturbine, wie z. B. eine Laufschaufel oder Leitschaufel einer Gasturbine.The present invention relates to a wear protection coating, in particular an erosion protection coating, for a surface to be protected of a fluid mechanical stressed component, in particular a component of a gas turbine, such. B. a blade or vane of a gas turbine.
Fig. 1 zeigt einen stark schematisierten Querschnitt durch eine erfindungsgemäße Verschleißschutzbeschichtung 10, die auf eine äußere Oberfläche 11 eines strömungstechnisch beanspruchten Bauteils 12, insbesondere einer Gasturbinenschaufel, aufgebracht ist.1 shows a highly schematic cross-section through a wear-resistant coating 10 according to the invention, which is applied to an outer surface 11 of a fluidically stressed component 12, in particular a gas turbine blade.
Eine äußere Schicht der erfindungsgemäßen Verschleißschutzbeschichtung 10 ist als Glättungsschicht 13 ausgebildet, wobei die Glättungsschicht 13 Unebenheiten bzw. Rauhigkeiten und/oder Fehlstellen der eigentlichen Verschleißschutzbeschichtung ausgleicht.An outer layer of the wear protection coating 10 according to the invention is designed as a smoothing layer 13, wherein the smoothing layer 13 compensates for unevenness or roughness and / or imperfections of the actual wear protection coating.
Die Glättungsschicht 13 weist dabei eine Dicke auf, die in der Größenordnung der auszugleichenden Unebenheiten bzw. Rauhigkeiten und/oder Fehlstellen liegt. Die Glättungsschicht 13 weist vorzugsweise eine Dicke zwischen 1 μm und 10 μm auf. Vorzugsweise beträgt die Dicke der Glättungsschicht zwischen 5 μm und 10 μm. Alternativ kann die Dicke der Glättungsschicht 13 auch zwischen 1 μm und 5 μm betragen.The smoothing layer 13 in this case has a thickness which is in the order of magnitude of the unevenness or roughness and / or defects to be compensated. The smoothing layer 13 preferably has a thickness between 1 .mu.m and 10 .mu.m. Preferably the thickness of the smoothing layer is between 5 μm and 10 μm. Alternatively, the thickness of the smoothing layer 13 may also be between 1 μm and 5 μm.
Wie bereits ausgeführt, bildet die Glättungsschicht 13 die äußere Schicht bzw. Lage der er- findungsgemäßen Verschleißschutzbeschichtung, wobei im gezeigten Ausfuhrungsbeispiel der Fig. 1 zwei Mehrlagenschichtsysteme 14, 15 auf die zu beschichtende Oberfläche 11 des Bauteils 12 aufgebracht sind, und wobei jedes Mehrlagenschichtsystem 14, 15 eine relativ weiche, metallische Schicht 16 und eine relativ harte, keramische Schicht 17 umfasst. Die äußere Glättungsschicht 13 ist auf die äußere, relativ harte, keramische Schicht 17 des äußeren Mehrlagenschichtsystems 15 aufgebracht.As already stated, the smoothing layer 13 forms the outer layer or layer of the wear protection coating according to the invention, wherein in the exemplary embodiment of FIG. 1 two multilayer systems 14, 15 are applied to the surface 11 of the component 12 to be coated, and wherein each multilayer system 14 15 comprises a relatively soft, metallic layer 16 and a relatively hard ceramic layer 17. The outer smoothing layer 13 is applied to the outer, relatively hard, ceramic layer 17 of the outer multilayer system 15.
Die Glättungsschicht 13 der erfindungsgemäßen Verschleißschutzbeschichtung ist als SoI- Gel-Schicht ausgeführt. Hierzu wird eine flüssige Phase, ein sogenanntes SoI, z. B. durch Tauchen, Spritzen oder Pinseln auf die äußere Schicht 17 des äußeren Mehrlagenschichtsystems 15 aufgebracht und anschließend durch eine Temperierung getrocknet sowie ausgehärtet.The smoothing layer 13 of the wear protection coating according to the invention is designed as a sol-gel layer. For this purpose, a liquid phase, a so-called SoI, z. B. by dipping, spraying or brushing applied to the outer layer 17 of the outer multi-layer system 15 and then dried by tempering and cured.
Bei der Trocknung sowie Aushärtung wandelt sich die flüssige Phase, nämlich das SoI, in ein feste Phase, in ein sogenanntes Gel, um. Das Trocknen und Aushärten kann mit einer Wärmebehandlung kombiniert werden.During drying and curing, the liquid phase, namely the sol, transforms into a solid phase, into a so-called gel. The drying and curing can be combined with a heat treatment.
Das Aufbringen der als Sol-Gel-Schicht ausgebildeten Glättungsschicht 13 auf die äußere harte Schicht 17 des Mehrlagenschichtsystems 15 verfügt über den Vorteil, dass die relativ harte Schicht 17 eine Stützwirkung für die relativ dünne Sol-Gel-Schicht und damit die Glättungsschicht 13 bereitstellt, was insbesondere die Anbindung der Glättungsschicht 13 bei mechanischer Belastung unterstützt.The application of the smoothing layer 13 formed as a sol-gel layer to the outer hard layer 17 of the multilayer system 15 has the advantage that the relatively hard layer 17 provides a supporting effect for the relatively thin sol-gel layer and thus the smoothing layer 13, which in particular supports the connection of the smoothing layer 13 under mechanical stress.
Als Glättungsschicht 13 wird vorzugsweise eine Sol-Gel-Schicht auf Silikatbasis oder Kohlenstoffbasis oder Metalloxidbasis oder Polymerbasis bereitgestellt. Es liegt demnach im Sinne der hier vorliegenden Erfindung als äußere Schicht einer Ver- schleißschutzbeschichtung eine Glättungsschicht 13 bereitzustellen, welche Unebenheiten bzw. Rauhigkeiten und/oder Fehlstellen der eigentlichen Verschleißschutzbeschichtung ausgleicht. Die Glättungsschicht 13 ist dabei vorzugsweise als Sol-Gel-Schicht ausgebildet, mit einer Dicke, die in der Größenordnung der auszugleichenden Unebenheiten bzw. Rauhigkeiten und/oder Fehlstellen liegt. Besonders bevorzugt findet die Glättungsschicht 13 dann Verwendung, wenn die Verschleißschutzbeschichtung aus mehreren Mehrlagen- schichtsystemen gebildet ist, wobei dann die Glättungsschicht auf die äußere Schicht des äußeren Mehrlagenschichtsystems aufgebracht ist. As the smoothing layer 13, there is preferably provided a silicate-based or carbon-based or metal oxide-based or polymer-based sol-gel layer. It is therefore within the meaning of the present invention as an outer layer of a wear protection coating to provide a smoothing layer 13, which compensates for unevenness or roughness and / or defects of the actual wear protection coating. The smoothing layer 13 is preferably formed as a sol-gel layer, with a thickness which is in the order of the unevenness or roughness and / or defects to be compensated. Particularly preferably, the smoothing layer 13 is used when the wear protection coating is formed from a plurality of multilayer coating systems, wherein the smoothing layer is then applied to the outer layer of the outer multilayer coating system.

Claims

Patentansprüche claims
1. Verschleißschutzbeschichtung, insbesondere Erosionsschutzbeschichtung, die auf eine zu schützende Oberfläche eines strömungsmechanisch beanspruchten Bauteils, insbesondere eines Gasturbinenbauteils, aufgebracht ist, dadurch gekennzeichnet, dass eine äußere Schicht als Glättungsschicht (13) ausgebildet ist, welche Unebenheiten bzw. Rauhigkeiten und/oder Fehlstellen der Verschleißschutzbeschichtung ausgleicht.1. Wear protection coating, in particular erosion protection coating, which is applied to a surface to be protected of a fluid mechanical component, in particular a gas turbine component, characterized in that an outer layer is formed as a smoothing layer (13), which unevenness or roughness and / or defects of Compensates wear protection coating.
2. Verschleißschutzbeschichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Glättungsschicht (13) eine Dicke in der Größenordnung der auszugleichenden Unebenheiten bzw. Rauhigkeiten und/oder Fehlstellen aufweist.2. wear protection coating according to claim 1, characterized in that the smoothing layer (13) has a thickness in the order of the unevenness or roughness to be compensated and / or defects.
3. Verschleißschutzbeschichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Glättungsschicht (13) eine Dicke zwischen 1 μm und 10 μm aufweist.3. wear protection coating according to claim 1 or 2, characterized in that the smoothing layer (13) has a thickness between 1 micron and 10 microns.
4. Verschleißschutzbeschichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Glättungsschicht (13) eine Dicke zwischen 1 μm und 5 μm aufweist.4. wear protection coating according to claim 3, characterized in that the smoothing layer (13) has a thickness between 1 micron and 5 microns.
5. Verschleißschutzbeschichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Glättungsschicht (13) eine Dicke zwischen 5 μm und.10 μm aufweist.5. wear protection coating according to claim 3, characterized in that the smoothing layer (13) has a thickness between 5 .mu.m and.10 microns.
6. Verschleißschutzbeschichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Glättungsschicht (13) als Sol-Gel-Schicht ausgebildet ist. 6. wear protection coating according to one of claims 1 to 5, characterized in that the smoothing layer (13) is formed as a sol-gel layer.
7. Verschleißschutzbeschichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Sol-Gel-Schicht auf einer Silikatbasis oder Metalloxidbasis oder Kohlenstoffbasis oder Polymerbasis ausgebildet ist.7. wear protection coating according to claim 6, characterized in that the sol-gel layer is formed on a silicate-based or metal oxide or carbon-based or polymer-based.
8. Verschleißschutzbeschichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass dieselbe aus einem oder mehreren, in Wiederholung auf die zu schützende Oberfläche aufgebrachten Mehrlagenschichtsystem gebildet ist, wobei das oder jedes Mehrlagenschichtsystem mindestens eine relativ weiche, metallische Schicht und mindestens eine relativ harte, keramische Schicht umfasst, wobei die äußere Glät- tungsschicht auf eine äußere, relativ harte, keramische Schicht des äußeren Mehrla- genschichtsystems aufgebracht ist. 8. wear protection coating according to one of claims 1 to 7, characterized in that it is formed from one or more, applied in repetition on the surface to be protected multi-layer system, wherein the or each multi-layer system at least one relatively soft, metallic layer and at least one relatively hard , Ceramic layer, wherein the outer smoothing layer is applied to an outer, relatively hard, ceramic layer of the outer multi-layer system.
EP08840008A 2007-10-19 2008-10-10 Wear protection coating Withdrawn EP2201151A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007050141A DE102007050141A1 (en) 2007-10-19 2007-10-19 Wear-resistant coating
PCT/DE2008/001668 WO2009049597A2 (en) 2007-10-19 2008-10-10 Wear protection coating

Publications (1)

Publication Number Publication Date
EP2201151A2 true EP2201151A2 (en) 2010-06-30

Family

ID=40456218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08840008A Withdrawn EP2201151A2 (en) 2007-10-19 2008-10-10 Wear protection coating

Country Status (5)

Country Link
US (1) US20100239429A1 (en)
EP (1) EP2201151A2 (en)
CA (1) CA2700899A1 (en)
DE (1) DE102007050141A1 (en)
WO (1) WO2009049597A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8273231B2 (en) 2007-12-21 2012-09-25 Rolls-Royce Corporation Methods of depositing coatings with γ-Ni + γ′-Ni3A1 phase constitution
US8501273B2 (en) 2008-10-02 2013-08-06 Rolls-Royce Corporation Mixture and technique for coating an internal surface of an article
US9624583B2 (en) * 2009-04-01 2017-04-18 Rolls-Royce Corporation Slurry-based coating techniques for smoothing surface imperfections
UA110643C2 (en) 2011-04-13 2016-01-25 Роллс-Ройс Корпорейшн Resistant to high corrosion disc or separator gas turbine and method for corrosion-resistant coatings vykosotemperaturnoyi
EP2548990B1 (en) 2011-07-20 2015-01-07 MTU Aero Engines GmbH Method for producing components liable to be exposed to fluid flows and products thus produced
US9387512B2 (en) 2013-03-15 2016-07-12 Rolls-Royce Corporation Slurry-based coating restoration
EP2918705B1 (en) 2014-03-12 2017-05-03 Rolls-Royce Corporation Coating including diffusion barrier layer including iridium and oxide layer and method of coating

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4904542A (en) 1988-10-11 1990-02-27 Midwest Research Technologies, Inc. Multi-layer wear resistant coatings
US5547767A (en) * 1991-10-14 1996-08-20 Commissariat A L'energie Atomique Multilayer material, anti-erosion and anti-abrasion coating incorporating said multilayer material and process for producing said multilayer material
GB9405744D0 (en) 1994-03-23 1994-05-11 Rolls Royce Plc A multilayer erosion resistant coating and a method for its production
US6294261B1 (en) * 1999-10-01 2001-09-25 General Electric Company Method for smoothing the surface of a protective coating
DE50310830D1 (en) * 2002-04-12 2009-01-08 Sulzer Metco Ag PLASMA INJECTION PROCEDURE
US20050079370A1 (en) * 2003-10-10 2005-04-14 Corderman Reed Roeder Nano-multilayered structures, components and associated methods of manufacture
US20050282032A1 (en) * 2004-06-18 2005-12-22 General Electric Company Smooth outer coating for combustor components and coating method therefor
DE102004050474A1 (en) * 2004-10-16 2006-04-20 Mtu Aero Engines Gmbh Process for producing a component coated with a wear protection coating

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102007050141A1 (en) 2009-04-23
WO2009049597A2 (en) 2009-04-23
WO2009049597A3 (en) 2009-12-17
CA2700899A1 (en) 2009-04-23
US20100239429A1 (en) 2010-09-23

Similar Documents

Publication Publication Date Title
DE102009010110B4 (en) Erosion protection coating system for gas turbine components
WO2009049597A2 (en) Wear protection coating
EP0219536B1 (en) Protection layer
EP2245274B1 (en) Device and method for the partial coating of components
CH708312A2 (en) Coating, coated turbine component and coating processes.
EP3320127B1 (en) Contour-following protective coating for compressor components of gas turbines
EP2271785B1 (en) Erosion protection coating
WO2005031038A1 (en) Wear-resistant layer, component comprising such a wear-resistant layer, and production method
WO2010051803A1 (en) Anti-erosion layer for aerodynamic components and structures and method for the production thereof
EP1382707A1 (en) Layer system
CH678067A5 (en)
WO2003085163A1 (en) Component comprising a masking layer
EP3078649A1 (en) Composite ceramic with corrosion protection layer and method for producing same
EP1639152A1 (en) Method for producing a protective layer, protective layer, use thereof, and part provided with a protective layer
EP3000977A1 (en) Blade for a turbine with hydrophobic coated turbine blade
WO2012038217A1 (en) Turbine blade comprising a ceramic anti-erosion layer for a low-pressure stage of a steam turbine
WO2018087080A1 (en) Multilayer aluminum-containing protective coating and component
WO2018209374A1 (en) Method for improving the wear resistance of a component
DE102018220338A1 (en) Turbine component for a turbomachine, method for producing, maintaining and / or overhauling a turbine component, turbine of a turbomachine and turbomachine
DE102007042124A1 (en) Engine component for a gas turbine
DE102004052135A1 (en) Coated metal substrate especially a hard metal with a wear protection layer consisting of high purity Al2O3 nanocrystals and containing residual pressure stresses useful in tool production
WO2009047159A1 (en) Ventilator
EP1612295A1 (en) Coated metal substrate and process for its preparing

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20100415

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20111209

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MTU AERO ENGINES AG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20200603