JP2017040003A - 金属部品を保護するために多層システムに熱バリアを製造するプロセス、およびこのような保護システムを備える部品 - Google Patents
金属部品を保護するために多層システムに熱バリアを製造するプロセス、およびこのような保護システムを備える部品 Download PDFInfo
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 55
- 239000002184 metal Substances 0.000 title claims abstract description 55
- 230000004888 barrier function Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000000919 ceramic Substances 0.000 claims abstract description 61
- 238000005245 sintering Methods 0.000 claims abstract description 30
- 229910000601 superalloy Inorganic materials 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- 230000007797 corrosion Effects 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 14
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims description 12
- 229910001938 gadolinium oxide Inorganic materials 0.000 claims description 7
- 229940075613 gadolinium oxide Drugs 0.000 claims description 7
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 7
- 229910052697 platinum Inorganic materials 0.000 claims description 7
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 6
- 239000000356 contaminant Substances 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 6
- 229910052746 lanthanum Inorganic materials 0.000 claims description 6
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 230000003628 erosive effect Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000000930 thermomechanical effect Effects 0.000 claims description 3
- -1 zirconia compound Chemical class 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 229910052845 zircon Inorganic materials 0.000 claims 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 abstract 2
- 239000011247 coating layer Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 8
- 238000002490 spark plasma sintering Methods 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 3
- OYINIGQXPJKPOM-UHFFFAOYSA-N aluminum calcium magnesium silicate Chemical compound [Si]([O-])([O-])([O-])[O-].[Al+3].[Mg+2].[Ca+2] OYINIGQXPJKPOM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 239000012720 thermal barrier coating Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910002080 8 mol% Y2O3 fully stabilized ZrO2 Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical class [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/068—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using ionising radiations (gamma, X, electrons)
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- C—CHEMISTRY; METALLURGY
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- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/082—Coating starting from inorganic powder by application of heat or pressure and heat without intermediate formation of a liquid in the layer
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
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- 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
- C23C28/36—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including layers graded in composition or physical properties
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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
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12458—All metal or with adjacent metals having composition, density, or hardness gradient
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- 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
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- Y10T428/00—Stock material or miscellaneous articles
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- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12542—More than one such component
- Y10T428/12549—Adjacent to each other
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Abstract
【解決手段】SPS技術を用いて特定セラミックから一段階で被覆層を製造する。金属部品は、SPSフラッシュ焼結方法にしたがって製造され、超合金基材22、金属副層21、TGO酸化物層25、および少なくとも2つの化学的および熱的に適合するセラミック層2a、2bから前記方法によって形成された熱バリア23を含む。内部セラミック2aは、かなり高い膨張係数を有するように設計されている。外部セラミック2bは、少なくともより低い熱伝導率、並びにかなり高い焼結温度及び/又は最大動作温度を有するように設計されている。熱バリアは、金属副層から外部セラミックへの組成および気孔率勾配3を有する。
【選択図】図3
Description
セラミックは、イットリア(Y2O3)によって部分的に安定化されたジルコニウムの「YSZ」化合物(ZrO2)、酸化ガドリニウムがドープされたYSZの「GYSZ」化合物(Gd2O3)、ジルコン酸ランタンの「LZ」化合物(La2Zr2O7)、および部分的にセリウム化されたジルコン酸ランタンの「LZC」化合物の中から選択され、
内部/外部セラミックは、以下のペアの中から有利に選択され:xYSZ/LZ、ここでイットリアの質量パーセンテージxは7質量%以上、xYSZ/LZCおよびxYSZ/GYSZ、具体的にはx=7およびx=8であり、
LZC化合物はLZyC(1−y)、ここでy=70%、yおよび1−yはジルコニウムおよび部分的にセリウム化されたジルコン酸セリウムの追加パーセンテージを表し、そしてドープYSZ化合物はtGvYSZであって、酸化ガドリニウムの質量パーセンテージは2%に等しく、YYSZのパーセンテージvは8%に等しい。
Claims (6)
- 超合金製金属部品を保護するために多層システム(24)に熱バリア(23)を製造する方法であって、前記方法は、SPS機械筐体(1)内の前記金属部品上に重ねられた層内の保護材料(24)をフラッシュ焼結することにより熱処理を生じるステップからなり、前記熱バリア(23)は、超合金基材(22)の上に金属副層(21)を形成する金属シートのアセンブリを備え、前記金属副層(21)の上に設けられかつ前記基材(22)と化学的および熱的に適合する内層(2a)である第一セラミック層(2a)を有し、前記内層(2a)の上に設けられる、外層である最終セラミック層(2b)において、前記外層(2b)は、前記内層(2a)よりも高い、CMASタイプの汚染物質に関する物理化学的耐性、および/または耐熱性を有し、
前記内層(2a)および前記最終外層(2b)のセラミックがそれぞれ、以下のペアの中から選択され、前記ペアが、xYSZ/LZ、ここでイットリアの質量パーセンテージxは7質量%以上、xYSZ/LZCおよびxYSZ/GYSZであり、「YSZ」が、イットリアによって部分的に安定化されたジルコニアの化合物であり、「GYSZ」が、酸化ガドリニウムがドープされたYSZの化合物であり、「LZ」が、ジルコン酸ランタン(La2Zr2O7)の化合物であり、かつ「LZC」が、部分的にセリウム化されたジルコン酸ランタンの化合物であり、
前記筐体(11)が、加圧手段および通電手段(16a、16b)、ならびに前記筐体(11)にパルス電流を流すための電気接点(12a、14a;12b、14b)を備えており、熱処理を生じるステップにおいて、前記熱バリア(23)が、一方では前記金属副層(21)との固着のため、他方では保護および/または外部平滑化のための組成勾配(G2)および気孔率勾配(G1)ならびに機能勾配を有するように、1,100℃から1,400℃の間の温度閾値(P2)、および15MPaから150MPaの間、好ましくは10MPaから100MPAの間の圧力閾値(P3)で、温度、圧力、および時間制御されたフラッシュ焼結サイクル(DT、DP)にしたがって、加圧およびパルス電流の同時印加が実行されることを特徴とする、熱バリア製造方法。 - 前記内層(2a)が、前記最終外層(2b)よりもかなり高い熱膨張係数を有する、請求項1に記載の熱バリア製造方法。
- 前記外層(2b)の物理化学的耐性が、焼結、腐食、浸食、および/または空気力学に関し、前記物理化学的耐性が、前記外層(2b)が前記内層(2a)に対して、低熱膨張率、高硬度、低熱伝導率、かなり高い焼結温度、低開放気孔率、および/または低粗度の中から選択された少なくとも1つの特性を有するように、それぞれが適切であってSPS機械の熱処理によって強化される、熱伝導率、気孔率、硬度、および/または粗度に関するセラミックの選択によって実現される、請求項1に記載の熱バリア製造方法。
- 熱バリアを含む保護システムを備える超合金製金属部品であって、前記金属部品は、ニッケルベースの超合金によって構成される基材(22)と、白金富化ベータ−(Ni,Pt)Alおよび/またはアルファ−NiPtAl相を有する金属副層(21)と、フラッシュ焼結による前記金属部品の製造中に熱成長によって形成されるTGO酸化物層(25)と、少なくとも2つの化学的および熱機械的に適合するジルコニウムベースのセラミック層(2a、2b)から形成されて外面(2e)を有する熱バリア(23)と、を含み、前記熱バリア(23)が、内層と称される第一セラミック層(2a)を備え、前記内層が、前記金属副層(21)に可能な限り近接して前記金属副層(21)の上に設けられ、かつ前記金属副層(21)と化学的および熱的に適合しており、前記熱バリア(23)がさらに、最終セラミック外層(2b)を備え、前記最終セラミック外層(2b)が、前記熱バリア(23)の前記外面(2e)に可能な限り近接して設けられ、かつ前記最終セラミック外層(2b)が、内層(2a)よりも高い物理化学的耐性および/または熱耐性を有するように設計されており、
前記内層(2a)および前記最終セラミック外層(2b)のセラミックがそれぞれ、以下のペアの中から選択され、前記ペアが、xYSZ/LZ、ここでイットリアの質量パーセンテージxは7質量%以上、xYSZ/LZCおよびxYSZ/GYSZであり、「YSZ」が、イットリアによって部分的に安定化されたジルコニアの化合物であり、「GYSZ」が、酸化ガドリニウムがドープされたYSZの化合物であり、「LZ」が、ジルコン酸ランタン(La2Zr2O7)の化合物であり、かつ「LZC」が、部分的にセリウム化されたジルコン酸ランタンの化合物であり、
前記熱バリア(23)が、一方では前記金属副層(21)と固着するため、そして他方では前記外面(2e)を保護および/または平滑化するための、前記金属副層(21)から前記外面(2e)への組成および気孔率勾配(3)、ならびに機能勾配を有することを特徴とする、超合金製金属部品。 - 前記内層(2a)が、前記最終セラミック外層(2b)よりも高い熱膨張係数を有し、前記最終セラミック外層(2b)が、前記内部セラミック(2a)よりもかなり低い熱伝導率、ならびに前記内層(2a)よりもかなり高い自然焼結温度および/または最大動作温度を有する、請求項4に記載の金属部品。
- LZC化合物はLZyC(1−y)、ここでy=70%、yおよび1−yはジルコニウムおよび部分的にセリウム化されたジルコン酸セリウムの追加パーセンテージを表し、そしてドープYSZ化合物はtGvYSZであって、酸化ガドリニウムの質量パーセンテージtは2%に等しく、YSZの質量パーセンテージvは8%に等しい、請求項5に記載の金属部品。
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