JP2006200037A - ケイ素含有材料用の、遷移層を有する熱/環境バリヤーコーティング - Google Patents
ケイ素含有材料用の、遷移層を有する熱/環境バリヤーコーティング Download PDFInfo
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- JP2006200037A JP2006200037A JP2005334182A JP2005334182A JP2006200037A JP 2006200037 A JP2006200037 A JP 2006200037A JP 2005334182 A JP2005334182 A JP 2005334182A JP 2005334182 A JP2005334182 A JP 2005334182A JP 2006200037 A JP2006200037 A JP 2006200037A
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- 230000004888 barrier function Effects 0.000 title claims abstract description 69
- 230000007613 environmental effect Effects 0.000 title claims abstract description 63
- 230000007704 transition Effects 0.000 title claims abstract description 54
- 238000000576 coating method Methods 0.000 title claims abstract description 34
- 239000011248 coating agent Substances 0.000 title claims abstract description 28
- 239000002210 silicon-based material Substances 0.000 title abstract 3
- 241000588731 Hafnia Species 0.000 claims abstract description 52
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(IV) oxide Inorganic materials O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 claims abstract description 52
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000000203 mixture Substances 0.000 claims abstract description 49
- 239000010703 silicon Substances 0.000 claims abstract description 33
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- -1 alkaline earth metal aluminosilicate Chemical class 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 20
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 19
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 18
- 239000011575 calcium Substances 0.000 claims abstract description 18
- 229910052747 lanthanoid Inorganic materials 0.000 claims abstract description 18
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 17
- 239000011777 magnesium Substances 0.000 claims abstract description 17
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910000323 aluminium silicate Inorganic materials 0.000 claims abstract description 8
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 59
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 32
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 25
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 24
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 claims description 23
- 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 23
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 16
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- WOIHABYNKOEWFG-UHFFFAOYSA-N [Sr].[Ba] Chemical compound [Sr].[Ba] WOIHABYNKOEWFG-UHFFFAOYSA-N 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 239000010955 niobium Substances 0.000 claims description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 106
- 229910044991 metal oxide Inorganic materials 0.000 description 17
- 150000004706 metal oxides Chemical class 0.000 description 17
- 239000007789 gas Substances 0.000 description 13
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 9
- 229910052863 mullite Inorganic materials 0.000 description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000003381 stabilizer Substances 0.000 description 6
- 239000011253 protective coating Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000012720 thermal barrier coating Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 241000968352 Scandia <hydrozoan> Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 239000011153 ceramic matrix composite Substances 0.000 description 3
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 3
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- HJGMWXTVGKLUAQ-UHFFFAOYSA-N oxygen(2-);scandium(3+) Chemical compound [O-2].[O-2].[O-2].[Sc+3].[Sc+3] HJGMWXTVGKLUAQ-UHFFFAOYSA-N 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- 238000007750 plasma spraying Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 150000002602 lanthanoids Chemical class 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 241000030614 Urania Species 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 229910052768 actinide Inorganic materials 0.000 description 1
- 150000001255 actinides Chemical class 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002084 calcia-stabilized zirconia Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910002086 ceria-stabilized zirconia 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
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- GEZAXHSNIQTPMM-UHFFFAOYSA-N dysprosium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Dy+3].[Dy+3] GEZAXHSNIQTPMM-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007749 high velocity oxygen fuel spraying Methods 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000011856 silicon-based particle Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- FCTBKIHDJGHPPO-UHFFFAOYSA-N uranium dioxide Inorganic materials O=[U]=O FCTBKIHDJGHPPO-UHFFFAOYSA-N 0.000 description 1
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- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
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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
- C23C28/04—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 only coatings of inorganic non-metallic material
- C23C28/042—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 only coatings of inorganic non-metallic material including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides
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- 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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- C23C28/048—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 only coatings of inorganic non-metallic material with 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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- 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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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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Abstract
【解決手段】 ケイ素含有材料からなる基材12を含み、さらに、環境バリヤー層16(例えば、アルカリ土類金属アルミノケイ酸塩)と、マグネシウム、カルシウム、スカンジウム、イットリウム及びランタニド金属及びこれらの混合物からなる群から選択される金属の酸化物10モル%以下で安定化したジルコニア又はハフニアを含むトップコート18とを含む物品10。さらに、環境バリヤー層16とトップコート18との間に前記トップコート18と同材に、ニオビア及びタンタラ及びこれらの混合物からなる群から選択される低CTE酸化物とを含む遷移層20を含む。
【選択図】 図1
Description
a)基材に重なる厚さ約25〜約500μmの環境バリヤー層を形成し、
b)環境バリヤー層に重なる遷移層であって、マグネシウム、カルシウム、スカンジウム、イットリウム及びランタニド金属からなる群から選択される金属の酸化物10モル%以下で安定化したジルコニア又はハフニアと、ニオビア及びタンタラ及びこれらの混合物からなる群から選択される低CTE酸化物とを含む厚さ約25〜約500μmの遷移層を形成し、
c)遷移層に重なるトップコートであって、約12.5〜約1250μmの厚さを有すると共に、マグネシウム、カルシウム、スカンジウム、イットリウム及びランタニド金属及びこれらの混合物からなる群から選択される金属の酸化物10モル%以下で安定化したジルコニア又はハフニアを含むトップコートを形成する
ことを含んでなる方法にも関する。
a)基材に重なる厚さ約25〜約500μmの環境バリヤー層を形成し、
b)環境バリヤー層に重なる遷移層であって、マグネシウム、カルシウム、スカンジウム、イットリウム及びランタニド金属からなる群から選択される金属の酸化物10モル%以下で安定化したジルコニア又はハフニアと、ニオビア及びタンタラ及びこれらの混合物からなる群から選択される低CTE酸化物とを含む厚さ約25〜約500μmの遷移層を形成し、
c)遷移層に重なるトップコートであって、約12.5〜約1250μmの厚さを有すると共に、マグネシウム、カルシウム、スカンジウム、イットリウム及びランタニド金属及びこれらの混合物からなる群から選択される金属の酸化物10モル%以下で安定化したジルコニア又はハフニアを含むトップコートを形成する
ことを含んでなる方法も提供する。
12 基材
14 熱/環境バリヤーコーティング系
16 環境バリヤー層
18 トップコート
20 遷移層
Claims (10)
- a)ケイ素含有材料からなる基材(12)、
b)基材に重なる環境バリヤー層(16)、
c)環境バリヤー層に重なる遷移層(20)であって、マグネシウム、カルシウム、スカンジウム、イットリウム及びランタニド金属からなる群から選択される金属の酸化物10モル%以下で安定化したジルコニア又はハフニアと、ニオビア及びタンタラ及びこれらの混合物からなる群から選択される低CTE酸化物とを含む遷移層(20)、並びに
d)遷移層に重なるトップコート(18)であって、マグネシウム、カルシウム、スカンジウム、イットリウム及びランタニド金属及びこれらの混合物からなる群から選択される金属の酸化物10モル%以下で安定化したジルコニア又はハフニアを含むトップコート(18)
を含んでなる物品、好ましくはガスタービンエンジン部品(10)。 - 基材(12)が、炭化ケイ素、窒化ケイ素、炭化ケイ素と窒化ケイ素とケイ素の1種以上からなる母材を有する複合材、及び炭化ケイ素母材と窒化ケイ素母材とケイ素母材の1種以上を炭化ケイ素と窒化ケイ素とケイ素の1種以上で補強した複合材からなる群から選択される材料からなる、請求項1記載の物品。
- 環境バリヤー層(16)が、アルカリ土類金属アルミノケイ酸塩材料、好ましくはアルミノケイ酸バリウムストロンチウムを含む、請求項1又は請求項2記載の物品。
- 遷移層(20)及びトップコート(18)がイットリア安定化ジルコニア又はイットリア安定化ハフニアを含む、請求項1乃至請求項3のいずれか1項記載の物品。
- 遷移層(20)が、いずれもモル基準で、40〜80%のジルコニアもしくはハフニア又はこれらの混合物と、10〜60%のニオビアもしくはタンタラ又はこれらの混合物と、2〜10%のイットリアとを含む、請求項1乃至請求項4のいずれか1項記載の物品。
- 環境バリヤー層(16)が25〜500μmの厚さを有し、遷移層(20)が25〜500μmの厚さを有し、トップコート(18)が12.5〜1250μmの厚さを有する、請求項1乃至請求項5のいずれか1項記載の物品。
- 遷移層(20)が傾斜組成を有していて、環境バリヤー層(16)から離れる方向に向かって漸減するニオビア及び/又はタンタラ濃度と漸増するイットリア安定化ジルコニア及び/又はイットリア安定化ハフニア濃度を有し、遷移層(20)とトップコート(18)との界面ではイットリア安定化ジルコニア及び/又はイットリア安定化ハフニアから実質的になる、請求項1乃至請求項6のいずれか1項記載の物品。
- ケイ素含有材料からなる基材(12)上に熱/環境バリヤーコーティング系(14)を設けるための方法であって、
a)基材に重なる厚さ25〜500μmの環境バリヤー層(16)を形成し、
b)環境バリヤー層に重なる遷移層(20)であって、マグネシウム、カルシウム、スカンジウム、イットリウム及びランタニド金属からなる群から選択される金属の酸化物10モル%以下で安定化したジルコニア又はハフニアと、ニオビア及びタンタラ及びこれらの混合物からなる群から選択される低CTE酸化物とを含む厚さ25〜500μmの遷移層(20)を形成し、
c)遷移層に重なるトップコート(18)であって、マグネシウム、カルシウム、スカンジウム、イットリウム及びランタニド金属及びこれらの混合物からなる群から選択される金属の酸化物10モル%以下で安定化したジルコニア又はハフニアを含む厚さ12.5〜1250μmのトップコート(18)を形成する
ことを含んでなる方法。 - 基材(12)が、炭化ケイ素、窒化ケイ素、炭化ケイ素と窒化ケイ素とケイ素の1種以上からなる母材を有する複合材、及び炭化ケイ素母材と窒化ケイ素母材とケイ素母材の1種以上を炭化ケイ素と窒化ケイ素とケイ素の1種以上で補強した複合材からなる群から選択される材料からなる、請求項8記載の方法。
- 遷移層(20)が、いずれもモル基準で、40〜80%のジルコニアもしくはハフニア又はこれらの混合物と、10〜60%のニオビアもしくはタンタラ又はこれらの混合物と、2〜10%のイットリアとを含む、請求項8又は請求項9記載の方法。
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US11/040,156 | 2005-01-21 |
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