WO2019057424A1 - Reines zirkonoxidpulver, schicht und schichtsystem - Google Patents

Reines zirkonoxidpulver, schicht und schichtsystem Download PDF

Info

Publication number
WO2019057424A1
WO2019057424A1 PCT/EP2018/072556 EP2018072556W WO2019057424A1 WO 2019057424 A1 WO2019057424 A1 WO 2019057424A1 EP 2018072556 W EP2018072556 W EP 2018072556W WO 2019057424 A1 WO2019057424 A1 WO 2019057424A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxide
layer
zirconium oxide
powder according
maximum content
Prior art date
Application number
PCT/EP2018/072556
Other languages
English (en)
French (fr)
Inventor
Arturo Flores Renteria
Axel Kaiser
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2019057424A1 publication Critical patent/WO2019057424A1/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • C01G25/02—Oxides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/486—Fine ceramics
    • 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
    • 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
    • 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
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C04B2235/3246—Stabilised zirconias, e.g. YSZ or cerium stabilised zirconia
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C04B2235/3248—Zirconates or hafnates, e.g. zircon
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/76—Crystal structural characteristics, e.g. symmetry
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
    • 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

Definitions

  • the invention relates to a powder based on zirconium oxide, which if possible has no contamination, and to a layer or layer system using this composition or this powder.
  • Ceramic thermal barrier coatings are known from gas turbines, in which the turbine blades and vanes, inter alia, with an outer ceramic layer based on zirconium oxide are ⁇ be coated.
  • thermomechanical properties of the zirconium oxide layer deteriorate in use, among other things, also characterized in that the layer is sintered and thereby the porosity ver ⁇ Ringert.
  • the sintering can be reduced and thus a longer life or longer ⁇ rule high, good thermal insulation properties can be achieved.
  • pure zirconia even when stabilized by yttria or other stabilizers, is very difficult and expensive to achieve.
  • the object is achieved by a powder according to claim 1, a layer according to claim 11 and a layer system according to claim 12.
  • Permitted impurities provide alumina (Al 2 O 3) with a maximum content of 0.05, calcium oxide (CaO) with a maximum content of 0.01, iron oxide (Fe 2 ⁇ 03) with a maximum content of 0.1, hafnium oxide (Hf0 2) with a maxi ⁇ paint content of 2.0, magnesium oxide (MgO) (with a maximum content of 0.01%, silicon oxide Si0 2) with a maximum Ge ⁇ halt of 0.03, titanium oxide (Ti0 2) with a maximum content of 0.01.
  • the remaining proportion of the impurity is at most 0.3% by weight and preferably at least 0.1% by weight.
  • the stabilizer is preferably yttria (Y 2 O 3 ) at a level of between 7.00% and 8.50% by weight.
  • the powder preferably has at most 2% of the monoclinic phase. Such powders can be used in different ways
  • the layer may be a simple layer or part of a layer system.
  • Figures 1, 2 show applications of the powder according to the invention.
  • the layer system 1 preferably includes a metallic sub ⁇ strat. 4
  • the substrate 4 may also be a ceramic, in particular a CMC.
  • the metallic substrate 4 is preferably a nickel- or cobalt-based superalloy.
  • a metallic bonding layer 7 is present, preferably based on MCrAlY or PtAL.
  • a ceramic thermal barrier coating 10 is present ( Figure 1).
  • the ceramic thermal barrier coating system may also include a two-layered ceramic layer 19 (with a significantly lower and higher contaminated zirconium oxide, which was used for a lower bonding layer 13 and an outer zirconium oxide layer 16 with the high purity zirconium oxide, Herge ⁇ introduces the powder of the invention Figure 2).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

Durch die Auswahl von Verunreinigungen und deren maximalen Obergrenzen kann eine hochreine Zirkonoxidschicht bereitgestellt werden, die dadurch eine geringe Sinterneigung aufweist und damit bessere und längere thermomechanischen Eigenschaften aufzeigt.

Description

Reines Zirkonoxidpulver, Schicht und Schichtsystem
Die Erfindung betrifft ein Pulver auf der Basis Zirkonoxid, welches möglichst keine Verunreinigung aufweist, sowie eine Schicht oder Schichtsystem unter Verwendung dieser Zusammensetzung oder dieses Pulvers.
Keramische Wärmedämmschichten sind bekannt aus Gasturbinen, bei denen die Turbinenlauf- und -leitschaufeln unter anderem mit einer äußeren Keramikschicht auf der Basis Zirkonoxid be¬ schichtet werden.
Die thermomechanischen Eigenschaften der Zirkonoxidschicht verschlechtern sich im Einsatz unter anderem auch dadurch, dass die Schicht sintert und dadurch die Porosität sich ver¬ ringert .
Dies ist nicht gewünscht.
Durch die Verwendung von reineren Pulvern kann die Sinterung reduziert werden und somit eine längere Lebensdauer oder län¬ gere hohe, gute Wärmedämmeigenschaften erzielt werden. Jedoch ist reines Zirkonoxid, auch wenn es durch Yttriumoxid oder andere Stabilisatoren stabilisiert wird, sehr schwierig und teuer zu erzielen.
Es ist daher Aufgabe der Erfindung oben genanntes Problem zu lösen .
Daher gilt es die nominalen Anteile der unerwünschten Oxide festzulegen .
Die Aufgabe wird gelöst durch ein Pulver gemäß Anspruch 1, eine Schicht gemäß Anspruch 11 und ein Schichtsystem gemäß Anspruch 12.
Die Beschreibung stellt nur ein Ausführungsbeispiel der Er¬ findung dar. Alle Angaben in Gew.-%:
Zugelassene Verunreinigungen stellen Aluminiumoxid (AI2O3) mit einem maximalen Gehalt von 0,05, Calziumoxid (CaO) mit einem maximalen Gehalt von 0,01, Eisenoxid (Fe2<03) mit einem maximalen Gehalt von 0,1, Hafniumoxid (Hf02) mit einem maxi¬ malen Gehalt von 2,0, Magnesiumoxid (MgO) mit einem maximalen Gehalt von 0,01%, Siliziumoxid (Si02) mit einem maximalen Ge¬ halt von 0,03, Titanoxid (Ti02) mit einem maximalen Gehalt von 0,01.
Der restliche Anteil der Verunreinigung liegt bei maximal 0,3 Gew.-% und vorzugsweise bei mindestens 0,1% Gew.-%.
Zusätzlich ist ein Stabilisator vorhanden. Der Stabilisator ist vorzugsweise Yttriumoxid (Y2O3) mit einem Anteil zwischen 7,00 Gew.-% und 8,50 Gew.-%.
Das Pulver weist vorzugsweise maximal 2% der monoklinen Phase auf . Solche Pulver können auf verschiedene Art und Weise als
Schicht aufgetragen werden. Dies stellt insbesondere Plasma¬ spritzen mit APS, VPS oder auch HVOF dar.
Die Schicht kann eine einfache Schicht sein oder Teil eines Schichtsystems.
Die Figuren 1, 2 zeigen erfindungsgemäße Anwendungen des Pulvers. Das Schichtsystem 1 weist vorzugsweise ein metallisches Sub¬ strat 4 auf.
Das Substrat 4 kann auch eine Keramik sein wie insbesondere ein CMC.
Das metallische Substrat 4 ist vorzugsweise eine nickel- oder kobaltbasierte Superlegierung .
Auf dem Substrat 4 ist eine metallische Anbindungsschicht 7 vorhanden, vorzugsweise auf der Basis MCrAlY oder PtAL. Auf der metallischen Anbmdungsschicht 7 ist eine keramische Wärmedämmschicht 10 vorhanden (Figur 1) .
Das keramische Wärmedämmschichtsystem kann auch eine zwei- lagige keramische Schicht 19 aufweisen, mit einem deutlich günstigeren und höher verunreinigten Zirkonoxid, das für eine untere Anbindungsschicht 13 verwendet wurde und einer äußeren Zirkonoxidschicht 16 mit dem hochreinen Zirkonoxid, herge¬ stellt mit dem Pulver der Erfindung (Figur 2) .
Da der äußere Schichtanteil die höheren Temperaturen ausge¬ setzt ist, reicht es aus, dass dort die Sinterneigung, die von der Temperatur abhängt, am geringsten ist.

Claims

Patentansprüche
1. Zirkonoxidpulver
zumindest aufweisend (in Gew.-%)
Aluminiumoxid (AI2O3) mit einem maximalen Gehalt von 0,05%, Calziumoxid (CaO) mit einem maximalen Gehalt von 0,01%, Eisenoxid (Fe2<03) mit einem maximalen Gehalt von 0,1%,
Hafniumoxid (HfC>2) mit einem maximalen Gehalt von 2,0%, Magnesiumoxid (MgO) mit einem maximalen Gehalt von 0,01%, Siliziumoxid (Si02) mit einem maximalen Gehalt von 0,03%, Titanoxid (T1O2) mit einem maximalen Gehalt von 0,01%, restliche Verunreinigungen maximal 0,3%,
einem Stabilisator mit einem Anteil von mindestens 1%, insbesondere mindestens 3%,
insbesondere bestehend daraus.
2. Zirkonoxidpulver nach Anspruch 1,
mit Yttriumoxid (Y2O3) als Stabilisator für Zirkonoxid, insbesondere nur Yttriumoxid (Y2O3) .
3. Zirkonoxidpulver nach einem oder beiden der Ansprüche 1 oder 2,
mit mindestens 0, 005% Aluminiumoxid (AI2O3) ,
insbesondere mindestens 0,01% Aluminiumoxid (AI2O3) .
4. Zirkonoxidpulver nach einem oder mehreren der Ansprüche 1, 2 oder 3,
mit mindestens 0,03% Eisenoxid (Fe2<03) ,
insbesondere mindestens 0,05% Eisenoxid (Fe2<03) .
5. Zirkonoxidpulver nach einem oder mehreren der Ansprüche 1, 2, 3 oder 4,
mit mindestens 1,0% Hafniumoxid (Hf02) .
6. Zirkonoxidpulver nach einem oder mehreren der Ansprüche 1, 2, 3, 4 oder 5,
mit 1,7% bis 1,8% Hafniumoxid (Hf02) ·
7. Zirkonoxidpulver nach einem oder mehreren der Ansprüche 1, 2, 3, 4, 5 oder 6,
mit mindestens 0,008% Magnesiumoxid (MgO) .
8. Zirkonoxidpulver nach einem oder mehreren der Ansprüche 1, 2, 3, 4, 5, 6 oder 7,
mit mindestens 0, 025% Siliziumoxid (Si02) ·
9. Zirkonoxidpulver nach einem oder mehreren der Ansprüche
1, 2, 3, 4, 5, 6, 7 oder 8,
mit mindestens 0, 0075% Titanoxid (Ti02) .
10. Zirkonoxidpulver nach einem oder mehreren der Ansprüche
1, 2, 3, 4, 5, 6, 7, 8 oder 9,
das 7% bis 10% Yttriumoxid (Y2O3) aufweist,
insbesondere zwischen 7% und 8,5% Yttriumoxid (Y2O3) .
11. Zirkonoxidpulver nach einem oder mehreren der Ansprüche
1, 2, 3, 4, 5, 6, 7, 8, 9 oder 10,
das maximal 2% der monoklinen Phase aufweist.
12. Schicht,
aufweisend,
insbesondere hergestellt,
aus einem Pulver aus einem oder mehreren der Ansprüche 11.
13. Schichtsystem (1)
zumindest aufweisend:
ein Substrat ( 4 ) ,
insbesondere ein metallisches Substrat,
ganz insbesondere aus einer nickel-, kobaltbasierten Super- legierung,
optional eine metallische Anbindungsschicht,
insbesondere auf der Basis MCrAlY,
optional eine keramische Anbindungsschicht verschieden von Aluminiumoxid,
insbesondere auf der Basis Zirkonoxid verschieden von einer
Schicht nach Anspruch 12, und
eine äußere Schicht gemäß Anspruch 12.
PCT/EP2018/072556 2017-09-21 2018-08-21 Reines zirkonoxidpulver, schicht und schichtsystem WO2019057424A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017216756.4A DE102017216756A1 (de) 2017-09-21 2017-09-21 Reines Zirkonoxidpulver, Schicht und Schichtsystem
DE102017216756.4 2017-09-21

Publications (1)

Publication Number Publication Date
WO2019057424A1 true WO2019057424A1 (de) 2019-03-28

Family

ID=63528703

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/072556 WO2019057424A1 (de) 2017-09-21 2018-08-21 Reines zirkonoxidpulver, schicht und schichtsystem

Country Status (2)

Country Link
DE (1) DE102017216756A1 (de)
WO (1) WO2019057424A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114641594A (zh) * 2019-11-12 2022-06-17 西门子能源全球有限两合公司 陶瓷材料、粉末以及包括陶瓷材料的层系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0708066A1 (de) * 1994-10-05 1996-04-24 Santoku Metal Industry Co., Ltd. Verfahren zur Herstellung eines Verbundoxides mit sauerstoffabsorbierender und -desorbierender Fähigkeit
US5580536A (en) * 1993-06-21 1996-12-03 Santoku Metal Industry Co., Ltd. Composite oxide having oxygen absorbing and desorbing capability and method for preparing same
EP1772441A1 (de) * 2005-10-07 2007-04-11 Sulzer Metco (US) Inc. Keramisches Material und Hochtemperaturbeschichtungen
US20080160172A1 (en) * 2006-05-26 2008-07-03 Thomas Alan Taylor Thermal spray coating processes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107055609B (zh) * 2016-12-29 2018-06-08 宣城晶瑞新材料有限公司 一种超高纯3y钇稳定氧化锆的制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5580536A (en) * 1993-06-21 1996-12-03 Santoku Metal Industry Co., Ltd. Composite oxide having oxygen absorbing and desorbing capability and method for preparing same
EP0708066A1 (de) * 1994-10-05 1996-04-24 Santoku Metal Industry Co., Ltd. Verfahren zur Herstellung eines Verbundoxides mit sauerstoffabsorbierender und -desorbierender Fähigkeit
EP1772441A1 (de) * 2005-10-07 2007-04-11 Sulzer Metco (US) Inc. Keramisches Material und Hochtemperaturbeschichtungen
US20080160172A1 (en) * 2006-05-26 2008-07-03 Thomas Alan Taylor Thermal spray coating processes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114641594A (zh) * 2019-11-12 2022-06-17 西门子能源全球有限两合公司 陶瓷材料、粉末以及包括陶瓷材料的层系统

Also Published As

Publication number Publication date
DE102017216756A1 (de) 2019-03-21

Similar Documents

Publication Publication Date Title
EP1029101B1 (de) Erzeugnis, insbesondere bauteil einer gasturbine, mit keramischer wärmedämmschicht, und verfahren zu dessen herstellung
DE602004008145T2 (de) Bindungsschicht für Substrate die auf Silizium basiert sind
US7186466B2 (en) Low conductivity and sintering-resistant thermal barrier coatings
EP0786017B1 (de) Schutzschicht zum schutz eines bauteils gegen korrosion, oxidation und thermische überbeanspruchung sowie verfahren zu ihrer herstellung
DE60310851T2 (de) Umwelt/Wärmedämmschicht für siliziumhaltiges Substrat
EP2251457B1 (de) NiCoCrAl- oder CoCrAl-Schicht mit Re
WO2009097834A1 (de) Wärmedämmschichtsystem sowie verfahren zu seiner herstellung
EP1859195B1 (de) Wärmedämmstoff sowie herstellungsverfahren und verwendung
DE602004003621T2 (de) Beschichtung für siliziumhaltiges Substrat
WO2019057424A1 (de) Reines zirkonoxidpulver, schicht und schichtsystem
DE102013217627A1 (de) Wärmedämmschichtsystem mit Korrosions- und Erosionsschutz
WO2017152891A1 (de) Haftvermittlerschicht zur anbindung einer hochtemperaturschutzschicht auf einem substrat, sowie verfahren zur herstellung derselben
WO2016055324A1 (de) Doppellagige zirkonoxidschicht mit hochreinem anteil
EP3765426A1 (de) Keramisches material, schicht und schichtsystem
WO2003057941A1 (de) Herstellung eines keramischen werkstoffes fur eine warmedammschicht sowie den werkstoff enthaltene warmedämmschicht
EP4267532A1 (de) Keramisches material, pulver sowie schichtsystem
EP3738942A1 (de) Keramik mit korrosionsschutzschicht, verfahren zu deren herstellung und deren verwendung
DE102014225130A1 (de) Dickes Wärmedämmschichtsystem
EP4031693A1 (de) Keramisches material, pulver sowie schichtsystem umfassend dem keramischen material
EP3426623A1 (de) Hitzeschild mit äusserster yttriumoxidbeschichtung, verfahren zur herstellung und produkt
EP1554230B1 (de) Schutzschichtsystem für nichtoxidische, si-haltige substrate
WO2019179722A1 (de) Keramisches material auf der basis von zirkonoxid mit weiteren oxiden
DE4028173C2 (de) Verwendung von Yttriumoxid dotiertem Cerdioxid
EP3334851A1 (de) Verfahren zur herstellung einer korrosionsschutzschicht für wärmedämmschichten aus hohlen aluminiumoxidkugeln und äusserster glasschicht und bauteil sowie materialmischung
DE102018215223A1 (de) Keramisches Material auf der Basis von Zirkonoxid mit weiteren Oxiden und Schichtsystem

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18766138

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18766138

Country of ref document: EP

Kind code of ref document: A1