DE102014222684A1 - Segmented thermal barrier coating made of fully stabilized zirconium oxide - Google Patents

Segmented thermal barrier coating made of fully stabilized zirconium oxide Download PDF

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Publication number
DE102014222684A1
DE102014222684A1 DE102014222684.8A DE102014222684A DE102014222684A1 DE 102014222684 A1 DE102014222684 A1 DE 102014222684A1 DE 102014222684 A DE102014222684 A DE 102014222684A DE 102014222684 A1 DE102014222684 A1 DE 102014222684A1
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Prior art keywords
zirconium oxide
layer
oxide layer
thermal barrier
barrier coating
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DE102014222684.8A
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German (de)
Inventor
Arturo Flores Renteria
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Siemens AG
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Siemens AG
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Priority to DE102014222684.8A priority Critical patent/DE102014222684A1/en
Priority to PCT/EP2015/073976 priority patent/WO2016071094A1/en
Publication of DE102014222684A1 publication Critical patent/DE102014222684A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/288—Protective coatings for blades
    • 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
    • C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
    • C23C28/3215—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer at least one MCrAlX 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
    • C23C28/345—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
    • C23C28/3455—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 with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/20—Oxide or non-oxide ceramics
    • F05D2300/21—Oxide ceramics
    • F05D2300/2118—Zirconium oxides

Abstract

Durch die Verwendung einer vollstabilisierten Zirkonoxidschicht und damit einem höheren Yttriumanteil und der Segmentierung wird eine höhere Lebensdauer auch bei Vorhandensein von CMAS-Verunreinigungen ermöglicht.By using a fully stabilized zirconium oxide layer and thus a higher proportion of yttrium and the segmentation, a longer service life is possible even in the presence of CMAS impurities.

Description

Die Erfindung betrifft ein Wärmedämmschichtsystem, das eine segmentierte keramische Schicht aus vollstabilisiertem Zirkonoxid aufweist. The invention relates to a thermal barrier coating system comprising a segmented ceramic layer of fully stabilized zirconia.

Es ist bekannt, dass sogenannte CMAS-Verunreinigungen zur Abspaltung von keramischen Wärmedämmschichten führen können. It is known that so-called CMAS impurities can lead to the cleavage of ceramic thermal barrier coatings.

Vielfach werden andere, zusätzliche Materialen verwendet, die das Eindringen von CMAS verhindern sollen. In many cases, other, additional materials are used to prevent the penetration of CMAS.

Dies ist jedoch aufwändig. However, this is expensive.

Es ist daher Aufgabe der Erfindung oben genanntes Problem zu lösen. It is therefore an object of the invention to solve the above-mentioned problem.

Die Aufgabe wird gelöst durch ein Wärmedämmschichtsystem nach Anspruch 1. The object is achieved by a thermal barrier coating system according to claim 1.

In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden können, um weitere Vorteile zu erzielen. In the dependent claims further advantageous measures are listed, which can be combined with each other in order to achieve further advantages.

Es zeigt die Figur schematisch ein erfindungsgemäßes Wärmedämmschichtsystem. The figure shows schematically a thermal barrier coating system according to the invention.

Die Figur und die Beschreibung stellen nur Ausführungsbeispiele der Erfindung dar. The figure and the description represent only embodiments of the invention.

Die Figur zeigt ein erfindungsgemäßes Wärmedämmschichtsystem 1. The figure shows an inventive thermal barrier coating system 1 ,

Das Wärmedämmschichtsystem 1 weist ein Substrat 4 auf. The thermal barrier coating system 1 has a substrate 4 on.

Das Substrat 4 ist vorzugsweise metallisch und ganz vorzugsweise eine Nickel- oder Kobaltbasierte Superlegierung. The substrate 4 is preferably metallic and most preferably a nickel or cobalt based superalloy.

Auf dem Substrat 4 ist optional eine Haftvermittlerschicht 7, insbesondere eine metallische Haftvermittlerschicht 7 aufgebracht. On the substrate 4 is optionally a primer layer 7 , in particular a metallic adhesion promoter layer 7 applied.

Das kann eine Diffusionsschicht sein und/oder eine Überzugsbeschichtung. This may be a diffusion layer and / or a coating coating.

Insbesondere bei Turbinenteilen weist die metallische Haftvermittlerschicht 7 die Zusammensetzung NiCoCrAlX auf, wobei X Yttrium (Y) und/oder eine Seltene Erde, Silizium (Si), Rhenium (Re), Tantal (Ta) und/oder Eisen (Fe) darstellt. In particular with turbine parts, the metallic adhesion promoter layer 7 the composition NiCoCrAlX, wherein X represents yttrium (Y) and / or a rare earth, silicon (Si), rhenium (Re), tantalum (Ta) and / or iron (Fe).

Auf der Grenzfläche 19 zu der keramischen Wärmedämmschicht 16 wird sich nach dem Beschichten der metallischen Haftvermittlerschicht 7 beim Beschichten der keramischen Schicht 16 oder zumindest im Betrieb eine Aluminiumoxidschicht bilden (nicht dargestellt). On the interface 19 to the ceramic thermal barrier coating 16 becomes after coating the metallic primer layer 7 when coating the ceramic layer 16 or at least during operation form an aluminum oxide layer (not shown).

Auf diese Aluminiumoxidschicht oder auf der Haftvermittlerschicht 7 wird eine möglichst frei von vertikalen Rissen, innere Zirkonoxidschicht 10 aufgebracht. Die innere Zirkonoxidschicht 10 weist vorzugsweise plättchenförmige Körner auf. On this aluminum oxide layer or on the adhesion promoter layer 7 gets as free of vertical cracks as possible, inner zirconium oxide layer 10 applied. The inner zirconium oxide layer 10 preferably has platelet-shaped grains.

Die innere Zirkonoxidschicht 10 ist teilstabilisiert und weist vorzugweise eine Porosität von mindestens 5 vol%, insbesondere mindestens 8 vol% auf. Der Anteil von Yttriumoxid (Y2O3) beträgt vorzugsweise 8mol%. The inner zirconium oxide layer 10 is partially stabilized and preferably has a porosity of at least 5 vol%, in particular at least 8 vol%. The proportion of yttrium oxide (Y 2 O 3 ) is preferably 8 mol%.

Auf dieser teilstabilisierten Zirkonoxidschicht 10 ist eine äußere und segmentierte Zirkonoxidschicht 13 aus vollstabilisiertem Zirkonoxid aufgebracht. Der Anteil von Yttriumoxid (Y2O3) beträgt vorzugsweise 20mol%, um die Vollstabilisierung zu erreichen. On this partially stabilized zirconium oxide layer 10 is an outer and segmented zirconium oxide layer 13 made of fully stabilized zirconium oxide. The proportion of yttrium oxide (Y 2 O 3 ) is preferably 20 mol% in order to achieve full stabilization.

Vorzugsweise können andere Gewichtsanteile oder in Kombination mit anderen Seltenen Erden andere Gewichtsanteile verwendet werden, um die Vollstabilisierung zu erreichen. Preferably, other parts by weight or in combination with other rare earths other parts by weight may be used to achieve full stabilization.

Die äußere Zirkonoxidschicht 13 ist mindestens zweimal so dick wie die innere Zirkonoxidschicht 10. Die äußere Zirkonoxidschicht 13 ist vorzugsweise die äußere Schicht des Schichtsystems. The outer zirconium oxide layer 13 is at least twice as thick as the inner zirconium oxide layer 10 , The outer zirconium oxide layer 13 is preferably the outer layer of the layer system.

Die Stabilisatoren für die innere Zirkonoxidschicht 10 und die äußere Schicht 13 können die gleichen sein, aber auch verschieden. The stabilizers for the inner zirconium oxide layer 10 and the outer layer 13 can be the same, but also different.

Die Segmente 15’, 15’’, 15’’’ der äußeren, segmentierten Zirkonoxidschicht 13 erstrecken sich vorzugsweise bis zur inneren Zirkonoxidschicht 10. The segments 15 ' . 15 '' . 15 ''' the outer, segmented zirconium oxide layer 13 preferably extend to the inner zirconium oxide layer 10 ,

Segmentierte keramische Schichten (DVC) sind Stand der Technik und können durch verschiedene Verfahren, bekannt aus dem Stand der Technik, erzielt werden. Segmented ceramic layers (DVC) are prior art and can be achieved by various methods known in the art.

Solche Schichten haben eine ausreichende Bruchzähigkeit und Stresstoleranz sowie eine geringe thermische Leitfähigkeit. Zusätzlich zu dem sehr deutlich höheren Anteil der Seltenen Erden, hier vorzugsweise Yttrium, wird auch das Reaktionsvermögen und der Reaktionsvorrat mit CMAS erhöht, so dass generell die Lebensdauer einer keramischen Wärmedämmschicht erhöht wird. Such layers have sufficient fracture toughness and stress tolerance as well as low thermal conductivity. In addition to the very much higher proportion of rare earths, in this case preferably yttrium, the reactivity and the reaction supply with CMAS are also increased, so that in general the service life of a ceramic thermal barrier coating is increased.

Claims (8)

Keramisches Wärmedämmschichtsystem (1), zumindest aufweisend ein Substrat (4), insbesondere ein metallisches Substrat (4), optional eine metallische Haftvermittlerschicht (7) auf dem Substrat (4), eine innere Zirkonoxidschicht (10) auf der metallischen Haftvermittlerschicht (7), wobei die innere Zirkonoxidschicht (10) teilstabilisiert ist und eine äußere Zirkonoxidschicht (13), die zumindest teilweise vertikal segmentiert (15’, 15’’, 15’’’) und vollstabilisiert ist. Ceramic thermal barrier coating system ( 1 ), at least comprising a substrate ( 4 ), in particular a metallic substrate ( 4 ) optionally a metallic adhesion promoter layer ( 7 ) on the substrate ( 4 ), an inner zirconium oxide layer ( 10 ) on the metallic adhesion promoter layer ( 7 ), wherein the inner zirconium oxide layer ( 10 ) is partially stabilized and an outer zirconium oxide layer ( 13 ) that at least partially vertically segments ( 15 ' . 15 '' . 15 ''' ) and fully stabilized. Schichtsystem nach Anspruch 1, bei dem die Dicke der äußeren Zirkonoxidschicht (13) mindestens zweimal so dick ist wie die Schichtdicke der inneren keramischen Zirkonoxidschicht (10). Layer system according to Claim 1, in which the thickness of the outer zirconium oxide layer ( 13 ) is at least twice as thick as the layer thickness of the inner ceramic zirconium oxide layer ( 10 ). Schichtsystem nach einem oder beiden der Ansprüche 1 oder 2, bei dem Yttriumoxid (Y2O3) als Stabilisator für Zirkonoxid verwendet wird. Layer system according to one or both of claims 1 or 2, in which yttrium oxide (Y 2 O 3 ) is used as stabilizer for zirconium oxide. Schichtsystem nach einem oder mehreren der Ansprüche 1, 2 oder 3, bei dem der Anteil an Yttriumoxid (Y2O3) in der vollstabilisierten Zirkonoxidschicht (10) mindestens 20mol% beträgt. Coating system according to one or more of Claims 1, 2 or 3, in which the proportion of yttrium oxide (Y 2 O 3 ) in the fully stabilized zirconium oxide layer ( 10 ) is at least 20 mol%. Schichtsystem nach einem oder mehreren der Ansprüche 1, 2, 3 oder 4, bei dem sich Segmente (15’, 15’’, 15’’’) in der vollstabilisierten, äußeren Zirkonoxidschicht (13) bis zur teilstabilisierten Zirkonoxidschicht (10) erstrecken. Layer system according to one or more of claims 1, 2, 3 or 4, in which segments ( 15 ' . 15 '' . 15 ''' ) in the fully stabilized outer zirconium oxide layer ( 13 ) to the partially stabilized zirconium oxide layer ( 10 ). Schichtsystem nach einem oder mehreren der vorhergehenden Ansprüche, bei dem die äußere Zirkonoxidschicht (13) die äußerste Schicht darstellt. Layer system according to one or more of the preceding claims, in which the outer zirconium oxide layer ( 13 ) represents the outermost layer. Schichtsystem nach einem oder mehreren der vorhergehenden Ansprüche, bei dem die innere Zirkonoxidschicht (10) nicht vertikal segmentiert ist. Layer system according to one or more of the preceding claims, in which the inner zirconium oxide layer ( 10 ) is not vertically segmented. Schichtsystem nach einem oder mehreren der vorhergehenden Ansprüche, bei dem die innere Zirkonoxidschicht (10) plättchenförmige Körner aufweist. Layer system according to one or more of the preceding claims, in which the inner zirconium oxide layer ( 10 ) has platelike grains.
DE102014222684.8A 2014-11-06 2014-11-06 Segmented thermal barrier coating made of fully stabilized zirconium oxide Withdrawn DE102014222684A1 (en)

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PCT/EP2015/073976 WO2016071094A1 (en) 2014-11-06 2015-10-16 Segmented thermal barrier layer made of fully stabilized zirconium oxide

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Publication number Priority date Publication date Assignee Title
EP3453779B1 (en) 2017-09-08 2022-04-20 Raytheon Technologies Corporation Multi layer cmas resistant thermal barrier coating

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EP0044329B1 (en) * 1980-01-07 1984-06-06 United Technologies Corporation Columnar grain ceramic thermal barrier coatings on polished substrates
US6047539A (en) * 1998-04-30 2000-04-11 General Electric Company Method of protecting gas turbine combustor components against water erosion and hot corrosion
EP0765951B1 (en) * 1995-09-26 2000-12-06 United Technologies Corporation Abradable ceramic coating
US6224963B1 (en) * 1997-05-14 2001-05-01 Alliedsignal Inc. Laser segmented thick thermal barrier coatings for turbine shrouds
EP1283278B1 (en) * 2001-08-02 2005-12-28 Siemens Power Generation, Inc. Segmented thermal barrier coating and method of manufacturing the same
EP0906964B1 (en) * 1997-10-02 2008-01-02 MTU Aero Engines GmbH Thermal barrier coating and process for its manufacture
EP2322686A2 (en) * 2009-10-14 2011-05-18 Walbar Inc. Thermal spray method for producing vertically segmented thermal barrier coatings
EP2283169B1 (en) * 2008-04-11 2014-05-07 Siemens Energy, Inc. Segmented thermal barrier coating

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Publication number Priority date Publication date Assignee Title
US7291403B2 (en) * 2004-02-03 2007-11-06 General Electric Company Thermal barrier coating system
US20050118334A1 (en) * 2004-09-03 2005-06-02 General Electric Company Process for inhibiting srz formation and coating system therefor
US9034479B2 (en) * 2011-10-13 2015-05-19 General Electric Company Thermal barrier coating systems and processes therefor
EP2581472A1 (en) * 2011-10-13 2013-04-17 Siemens Aktiengesellschaft Ceramic double layer on a zirconium oxide basis

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044329B1 (en) * 1980-01-07 1984-06-06 United Technologies Corporation Columnar grain ceramic thermal barrier coatings on polished substrates
EP0765951B1 (en) * 1995-09-26 2000-12-06 United Technologies Corporation Abradable ceramic coating
US6224963B1 (en) * 1997-05-14 2001-05-01 Alliedsignal Inc. Laser segmented thick thermal barrier coatings for turbine shrouds
EP0906964B1 (en) * 1997-10-02 2008-01-02 MTU Aero Engines GmbH Thermal barrier coating and process for its manufacture
US6047539A (en) * 1998-04-30 2000-04-11 General Electric Company Method of protecting gas turbine combustor components against water erosion and hot corrosion
EP1283278B1 (en) * 2001-08-02 2005-12-28 Siemens Power Generation, Inc. Segmented thermal barrier coating and method of manufacturing the same
EP2283169B1 (en) * 2008-04-11 2014-05-07 Siemens Energy, Inc. Segmented thermal barrier coating
EP2322686A2 (en) * 2009-10-14 2011-05-18 Walbar Inc. Thermal spray method for producing vertically segmented thermal barrier coatings

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