JP2012513946A - シリコンを含有する耐熱性基材用の環境バリア - Google Patents
シリコンを含有する耐熱性基材用の環境バリア Download PDFInfo
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- JP2012513946A JP2012513946A JP2011542881A JP2011542881A JP2012513946A JP 2012513946 A JP2012513946 A JP 2012513946A JP 2011542881 A JP2011542881 A JP 2011542881A JP 2011542881 A JP2011542881 A JP 2011542881A JP 2012513946 A JP2012513946 A JP 2012513946A
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- substrate
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- rare earth
- layer
- mullite
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- 239000000758 substrate Substances 0.000 title claims abstract description 50
- 230000004888 barrier function Effects 0.000 title claims abstract description 41
- 230000007613 environmental effect Effects 0.000 title claims abstract description 37
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 31
- 239000010703 silicon Substances 0.000 title claims abstract description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 15
- 239000007790 solid phase Substances 0.000 claims abstract description 15
- 230000001590 oxidative effect Effects 0.000 claims abstract description 7
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011819 refractory material Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 43
- 239000007791 liquid phase Substances 0.000 claims description 34
- 229910052863 mullite Inorganic materials 0.000 claims description 33
- 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 claims description 30
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 28
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 27
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 23
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 22
- 239000011159 matrix material Substances 0.000 claims description 21
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 150000002910 rare earth metals Chemical class 0.000 claims description 15
- -1 rare earth silicate Chemical class 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 14
- 239000012071 phase Substances 0.000 claims description 14
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 8
- 229910052727 yttrium Inorganic materials 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 229910052691 Erbium Inorganic materials 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 5
- 150000002602 lanthanoids Chemical class 0.000 claims description 5
- 229910052706 scandium Inorganic materials 0.000 claims description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 4
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 3
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 3
- 239000003779 heat-resistant material Substances 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims 1
- 239000010410 layer Substances 0.000 description 75
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 17
- 239000000463 material Substances 0.000 description 17
- 239000000843 powder Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 7
- 238000000151 deposition Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 4
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000007750 plasma spraying Methods 0.000 description 4
- 239000011253 protective coating Substances 0.000 description 4
- 239000002296 pyrolytic carbon Substances 0.000 description 4
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Inorganic materials [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910052692 Dysprosium Inorganic materials 0.000 description 3
- 229910004283 SiO 4 Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052746 lanthanum Inorganic materials 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 229910000449 hafnium oxide Inorganic materials 0.000 description 2
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 2
- 229910001936 tantalum oxide Inorganic materials 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000011184 SiC–SiC matrix composite Substances 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011153 ceramic matrix composite Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 238000001652 electrophoretic deposition Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012210 heat-resistant fiber Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000011823 monolithic refractory Substances 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-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
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 238000005289 physical deposition Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- 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
- C04B41/80—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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- 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
- C04B35/16—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 silicates other than clay
- C04B35/18—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 silicates other than clay rich in aluminium oxide
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- 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
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- C04B35/185—Mullite 3Al2O3-2SiO2
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- 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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- C—CHEMISTRY; METALLURGY
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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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- 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
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- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
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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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- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
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Abstract
【選択図】 図1
Description
表面に隣接する少なくとも1つの部分がシリコンを含有する耐熱性材料から作られている基材について、本発明は、この基材を、酸化性でありかつ湿った媒体中で高温においてこれが使用されている間に、ホウ素を含有しない環境バリアをこの基材の前記表面上に形成することによって保護することに関する。
第1の側面では、本発明の目的は、表面に隣接した少なくとも1つの部分がシリコンを含有する耐熱性材料から作られている基材を、高速のガス流の存在下であることを含めて、酸化性でありかつ湿った雰囲気中でおよび少なくとも1400℃までその有効性を維持できる環境バリアを形成することによって保護する方法を提供することにある。
以下の詳細な説明では、環境バリアを、シリコンを含有するCMC材料の基材上に形成させる。しかしながら、本発明は、シリコンを含有するモノリシックな耐熱性材料の基材に適用可能であり、および、より詳細には、表面に隣接する少なくとも1つの部分がシリコンを含有する耐熱性材料(複合材またはモノリシックなもの)で作られている基材に適用可能であることが想起される。
・C−SiC混合マトリックス(外側にSiCを有する);または
・SiC相と、低い剛性の相、たとえば熱分解炭素(PyC)の、窒化ホウ素(BN)の、またはホウ素がドープされた炭素(BC)の相とを交互に有し、マトリックスの末端相がSiCから作られているシーケンスマトリックス;または
・炭化ホウ素(B4C)のまたはSi−B−C三元系のマトリックス相(任意に自由炭素を含む(B4C+C、Si−B−C+C))と、Si−B−CのまたはSiCの末端相とを有する自己修復性マトリックス
である。
SiC繊維から作られた繊維強化材とSiCマトリックスとを含むSiC/SiC複合材料の基材に、以下のようにして環境バリアを設けた:
・SiC/SiC基材上に、Y2Si2O7粉末からプラズマ溶射によって、約200μmの厚さを有するイットリウムシリケートY2Si2O7の下地層を堆積させ、
・前記下地層上に、プラズマ溶射によって、ムライト(15mol%)およびY2Si2O7(85mol%)の粉末の混合物から始めて、Y2O3(53.61重量パーセント(wt%))、SiO2(33.57wt%)、およびAl2O3(12.82wt%)の系を形成した組成を与えて、約100μmの厚さの外層を堆積させた。
ムライト(41.2mol%)およびY2Si2O7(58.8mol%)の粉末の混合物から外層を形成して、以下の系:Y2O3(35.04wt%)、SiO2(31.71wt%)、およびAl2O3(33.25wt%)を形成する組成を与えた以外、手順は例1と同様であった。
ムライト(54.4mol%)およびY2Si2O7(45.6mol%)の粉末の混合物から外層を形成して、以下の系:Y2O3(26.43wt%)、SiO2(30.85wt%)、およびAl2O3(42.72wt%)を形成する組成を与えた以外、手順は例1と同様であった。
ムライト(80mol%)およびY2Si2O7(20mol%)の粉末の混合物から外層を形成して、以下の系:Y2O3(11.01wt%)、SiO2(29.31wt%)、およびAl2O3(59.68wt%)を形成する組成を与えた以外、手順は例1と同様であった。
イットリウムアルミネートY4Al2O9(8mol%)およびSiO2(92mol%)の粉末の混合物から外層を形成して、以下の系:Y2O3(36.29wt%)、SiO2(55.52wt%)、およびAl2O3(8.19wt%)を形成する組成を与えた以外、手順は例1と同様であった。
下地層および外層でY2Si2O7をイッテリビウムシリケートYb2Si2O7と交換し、外層が15mol%のムライトと85mol%のYb2Si2O7を含んでいたこと以外、手順は例1と同様であった。
Claims (12)
- シリコンを含有する耐熱性材料から作られている表面に隣接する少なくとも1つの部分を有する基材を、酸化性でありかつ湿った媒体中における高温での使用中に、ホウ素を含有しない環境バリアを前記基材の前記表面上に形成することによって保護する方法であって、
少なくとも1種の希土類酸化物と、シリカと、アルミナから形成された酸化物の系から本質的に構成された少なくとも1つの層を有する環境バリアを形成し、前記系は、少なくとも約1400℃までは大部分の固相を維持し、約1400℃以上の温度では液相が生じ、前記液相は、前記層の全ての組成の5mol%ないし40mol%の範囲内を占め、それにより前記層は少なくとも約1400℃までに及ぶ温度範囲において少なくとも1つの固相の存在を維持しながら自己修復できることを特徴とする方法。 - 前記基材の前記表面と前記自己修復層との間に挿入されており、自己修復温度で固体状態を維持する下地層をさらに含む環境バリアを形成することを特徴とする請求項1に記載の方法。
- ・少なくとも1種の希土類のシリケートから本質的に構成される下地層;
・ムライトから本質的に構成される下地層;
・前記基材上に形成したシリコンのコーティング上に堆積させたムライトから本質的に構成される下地層;および
・前記基材の近傍においてシリコンから始まりかつ前記自己修復層の近傍においてムライトで終端するシリコン−ムライト組成勾配を本質的に有する下地層
から選択される下地層を形成することを特徴とする請求項2に記載の方法。 - 前記自己修復層は、本質的に希土類シリケートRE2Si2O7(ここでREは希土類である)とムライト(3Al2O3・2SiO2)との混合物を表すことを特徴とする請求項1ないし3の何れか1項に記載の方法。
- 前記自己修復層は、本質的に希土類アルミネートRE4Al2O9(ここでREは希土類である)とシリカSiO2との混合物を表すことを特徴とする請求項1ないし3の何れか1項に記載の方法。
- 前記希土類は、イットリウム、スカンジウム、ならびにランタニド、特にイッテルビウムおよびエルビウムから選択される少なくとも1種であることを特徴とする請求項1ないし5の何れか1項に記載の方法。
- 基材であって、シリコンを含有する耐熱性材料から作られている前記基材の表面に隣接する少なくとも1つの部分を有する基材と、ホウ素を含有せず前記基材の前記表面上に形成され、酸化性でありかつ湿った媒体中における高温での使用中に前記基材を保護できる環境バリアとを含む部品であって、前記環境バリアは、少なくとも1種の希土類酸化物、シリカおよびアルミナから形成された酸化物の系から本質的に構成された少なくとも1つの層を有し、前記系は、少なくとも約1400℃までは大部分の固相を維持し、約1400℃以上の温度では液相が生じ、前記液相は前記層の全ての組成の5mol%ないし40mol%の範囲内を占め、それにより前記層が少なくとも約1400℃までに及ぶ温度範囲内において少なくとも1つの固相の存在を維持しながら自己修復できることを特徴とする部品。
- 前記環境バリアは、前記基材の前記表面と前記自己修復層との間に挿入されており、
・少なくとも1種の希土類のシリケートから本質的に構成される下地層;
・ムライトから本質的に構成される下地層;
・前記基材上に形成したシリコンのコーティング上に堆積させたムライトから本質的に構成される下地層;および
・前記基材の近傍においてシリコンから始まりかつ前記自己修復層の近傍においてムライトで終端するシリコン−ムライト組成勾配を本質的に有する下地層
から選択される下地層をさらに含むことを特徴とする請求項7に記載の部品。 - 前記自己修復層は、本質的に希土類シリケートRE2Si2O7(ここでREは希土類である)とムライト(3Al2O3・2SiO2)との混合物を表すことを特徴とする請求項7または8に記載の部品。
- 前記自己修復層は、本質的に希土類アルミネートRE4Al2O9(ここでREは希土類である)とシリカSiO2との混合物を表すことを特徴とする請求項7または8に記載の部品。
- 前記希土類は、イットリウム、スカンジウム、ならびにランタニド、特にイッテルビウムおよびエルビウムから選択される少なくとも1種であることを特徴とする請求項7ないし10の何れか1項に記載の部品。
- 前記基材は、繊維強化材とマトリックスとを含む複合材料から作られており、前記マトリックスは、前記基材の表面に隣接する炭化ケイ素SiCの少なくとも1つの相を含むことを特徴とする請求項7ないし11の何れか1項に記載の部品。
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PCT/FR2009/052672 WO2010072978A1 (fr) | 2008-12-24 | 2009-12-23 | Barriere environnementale pour substrat refractaire contenant du silicium |
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Publication number | Publication date |
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RU2519250C2 (ru) | 2014-06-10 |
EP2379471B1 (fr) | 2015-02-18 |
JP5677977B2 (ja) | 2015-02-25 |
UA104879C2 (uk) | 2014-03-25 |
WO2010072978A1 (fr) | 2010-07-01 |
CN102264670A (zh) | 2011-11-30 |
US8940417B2 (en) | 2015-01-27 |
CN102264670B (zh) | 2013-12-04 |
RU2011129067A (ru) | 2013-01-27 |
US20110256411A1 (en) | 2011-10-20 |
EP2379471A1 (fr) | 2011-10-26 |
FR2940278A1 (fr) | 2010-06-25 |
FR2940278B1 (fr) | 2011-05-06 |
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