JP4113857B2 - ケイ素基材とボンド層と保護層とを含む物品 - Google Patents
ケイ素基材とボンド層と保護層とを含む物品 Download PDFInfo
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- JP4113857B2 JP4113857B2 JP2004152719A JP2004152719A JP4113857B2 JP 4113857 B2 JP4113857 B2 JP 4113857B2 JP 2004152719 A JP2004152719 A JP 2004152719A JP 2004152719 A JP2004152719 A JP 2004152719A JP 4113857 B2 JP4113857 B2 JP 4113857B2
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- 239000010410 layer Substances 0.000 title claims description 46
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims description 35
- 239000010703 silicon Substances 0.000 title claims description 35
- 229910052710 silicon Inorganic materials 0.000 title claims description 35
- 239000000758 substrate Substances 0.000 title claims description 25
- 239000011241 protective layer Substances 0.000 title claims description 7
- 239000011236 particulate material Substances 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052735 hafnium Inorganic materials 0.000 claims description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 239000010955 niobium Substances 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 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 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 8
- 239000000835 fiber Substances 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 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
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052863 mullite Inorganic materials 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
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005507 spraying Methods 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- -1 whiskers Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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Classifications
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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
-
- 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
-
- 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
- C04B41/80—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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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
- Y10T428/249927—Fiber embedded in a metal matrix
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/252—Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
本発明は、耐環境被膜に関し、特に、ケイ素を含む基材に被覆される耐環境被膜に関する。
ケイ素基セラミックスは、ガスタービンエンジンの燃焼器やタービン部などの高温で水を含む環境において酸化速度が加速する。このような環境でセラミック部品として使用されるケイ素基材の酸化速度を減少させて、このような部品の耐用寿命を延長するために、ケイ素基材用の耐環境被膜すなわちバリヤ層を提供する努力がなされてきた。
図１ａ，図１ｂを参照すると、従来技術の耐環境被膜は、ケイ素基材１２と、ケイ素含有金属の密な連続層を含むボンドコートすなわちボンド層１４と、バリウムおよびストロンチウム基のアルカリ土類アルミノケイ酸塩、またはケイ酸イットリウムのいずれかを含むバリヤ層１６と、耐熱性酸化物および／またはケイ酸塩、または酸化ジルコニウムなどの他の金属酸化物を含むトップコートすなわちトップ層１８と、を含む複合物１０を構成する。さらに、ボンドコート１４とトップ層１８との間および／またはバリヤ層１６とトップ層１８との間に中間層２０を設けることができる。この中間層は、例えば、バリヤ層材料とムライトなどの追加の酸化物の混合物を含む。このような従来技術の耐環境システムは、ケイ素基材に対して耐酸化性を与えるとともに密着性を有することが実証されてきた。しかし、ケイ素基材は、室温における４点曲げ強度がかなり減少することによって示されるように、特定の機械的特性が損なわれる場合があることがわかった。機械的特性の損失は、ケイ素を含む基材に隣接するボンド層の割れに起因し、このような割れによって基材自体の割れを発生させる応力集中が生じるためであると考えられている。ボンドコートすなわちボンド層に生じる割れは、基材とボンド層との間の熱膨張係数の差や、部品の急速な周期的冷却および加熱によって生じる応力を含む多くの原因によって発生する。
米国特許第４５９５６３７号明細書
よって、結果として機械的特性を大きく損なうことがない、ケイ素を含む基材のための改善されたボンドコート層が求められている。
従って、本発明の主な目的は、従来技術における上述の問題を解決する耐環境被膜用の改善されたボンド層を提供することである。
上述の目的は、ケイ素基材用のボンド層が分散粒状材料を有するケイ素層を含む本発明によって達成される。この粒状材料は、（１）アルミナ、（２）イットリア、（３）ケイ酸アルミニウム、（４）希土類元素、アルカリ土類元素、アルミニウム、酸素、イットリウム、窒素、ニオブ、タンタル、ハフニウム、ジルコニウム、炭素、およびケイ素のそれぞれの化合物、およびこれらの混合物からなる群から選択される。
本発明の利点は、特に、ボンド層または粒子が導入される他の層の破壊靭性が改善されることである。さらに、粒状材料は、粒子、繊維、ホイスカ、およびこれらの混合物の形態とすることができ、繊維は、最終的な用途に応じてボンド層または耐環境被膜の他の層内に配置および配向することができる。
粒状材料は、溶射法などの従来技術で周知の方法によって加えることができる。
その他の目的や利点は、以下に記載されている。
本発明は、ケイ素基材とボンド層とを含む物品に関する。ボンド層は、ケイ素基材に直接被覆することができ、またはボンド層とケイ素基材との間に酸化ケイ素の中間層または他の中間層を設けることもできる。
ケイ素を含む基材は、ケイ素を含むセラミック基材またはケイ素を含む金属合金とすることができる。好適実施例では、ケイ素を含む基材は、例えば、炭化ケイ素、炭化ケイ素複合材料、窒化ケイ素、窒化ケイ素複合材料、酸窒化ケイ素、および酸窒化ケイ素アルミニウムなどのケイ素を含むセラミック材料である。
本発明によると、ボンド層は、分散粒状材料を有するケイ素層を含み、粒状材料は、（１）アルミナ、（２）イットリア、（３）ケイ酸アルミニウム、（４）希土類元素、アルカリ土類元素、アルミニウム、酸素、イットリウム、窒素、ニオブ、タンタル、ハフニウム、ジルコニウム、炭素、およびケイ素のそれぞれの化合物、およびこれらの混合物からなる群から選択される。粒状材料は、粒子、繊維、およびこれらの混合物の形態とすることができる。本発明で有用な粒子は、０．１〜１００ミクロン、好ましくは０．５〜１０ミクロンの平均粒径を有するものである。粒状材料が繊維の形態であれば、このような繊維は、０．５〜１００ミクロン、好ましくは１〜２０ミクロンの平均長さ、および０．１〜５０ミクロン、好ましくは０．５〜１０ミクロンの平均径を有することが望ましい。粒状材料は、２５〜９０体積％、好ましくは４０〜７５体積％の量で含まれる。
本発明では、粒状材料はボンド層に含まれており、このボンド層は、ケイ素基材に直接被覆することができるが、ボンド層とケイ素基材との間に酸化ケイ素などの中間層を設けることもできる。従来技術で認知されているように、本発明の物品には、トップ層、保護層、および他の中間層などを含む他の層が含まれてもよく、機械的な利点のためにこれらの追加の層のいずれかまたは全てに粒状材料を含むことも本発明の範囲に含まれる。
粒子および／または繊維の形態の粒状材料は、従来技術で周知の方法によってボンド層に加えることができる。特に適した方法は、ケイ素基材の表面に密着するように繊維をプラズマ溶射してから、この粒状材料の上にボンド層材料を被覆することである。適切な処理は、本出願人が有する特許文献１に開示されている。
本発明の利点には、耐環境被膜の割れの減少および密着性の向上が含まれる。
本発明は、ここで説明および開示した実施例に限定されない。これらの実施例は、単に本発明の好適実施例を示しており、その形態、寸法、部品構成、および動作の詳細は変更される余地がある。本発明は、請求の範囲によって定められる本発明の趣旨および範囲内に含まれるこのような全ての変更を含むことを意図している。
Claims (5)
- ボンド層が、粒状材料が分散されたケイ素含有金属からなり、この粒状材料は、粒子の形態をとるとともに、（１）アルミナ、（２）イットリア、（３）ケイ酸アルミニウム、（４）希土類元素、アルカリ土類元素、アルミニウム、酸素、イットリウム、窒素、ニオブ、タンタル、ハフニウム、ジルコニウム、炭素、およびケイ素のそれぞれの化合物、およびこれらの混合物からなる群から選択されることを特徴とするケイ素基材とボンド層と保護層とを含む物品。
- 前記粒状材料は、０．１〜１００ミクロンの平均粒径を有する粒子を含むことを特徴とする請求項１記載のケイ素基材とボンド層と保護層とを含む物品。
- 前記粒状材料は、０．５〜１０ミクロンの平均粒径を有する粒子を含むことを特徴とする請求項１記載のケイ素基材とボンド層と保護層とを含む物品。
- 前記粒状材料は、２５〜９０体積％の量で含まれていることを特徴とする請求項１記載のケイ素基材とボンド層と保護層とを含む物品。
- 前記粒状材料は、４０〜７５体積％の量で含まれていることを特徴とする請求項１記載のケイ素基材とボンド層と保護層とを含む物品。
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/443,341 US6777093B1 (en) | 2003-05-22 | 2003-05-22 | Bond layer for silicon containing substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004345353A JP2004345353A (ja) | 2004-12-09 |
| JP4113857B2 true JP4113857B2 (ja) | 2008-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004152719A Expired - Lifetime JP4113857B2 (ja) | 2003-05-22 | 2004-05-24 | ケイ素基材とボンド層と保護層とを含む物品 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6777093B1 (ja) |
| EP (1) | EP1479661B1 (ja) |
| JP (1) | JP4113857B2 (ja) |
| DE (1) | DE602004004832T2 (ja) |
Families Citing this family (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6984277B2 (en) * | 2003-07-31 | 2006-01-10 | Siemens Westinghouse Power Corporation | Bond enhancement for thermally insulated ceramic matrix composite materials |
| US20060210800A1 (en) * | 2005-03-21 | 2006-09-21 | Irene Spitsberg | Environmental barrier layer for silcon-containing substrate and process for preparing same |
| US20060211241A1 (en) * | 2005-03-21 | 2006-09-21 | Christine Govern | Protective layer for barrier coating for silicon-containing substrate and process for preparing same |
| US20060280955A1 (en) * | 2005-06-13 | 2006-12-14 | Irene Spitsberg | Corrosion resistant sealant for EBC of silicon-containing substrate and processes for preparing same |
| US7354651B2 (en) * | 2005-06-13 | 2008-04-08 | General Electric Company | Bond coat for corrosion resistant EBC for silicon-containing substrate and processes for preparing same |
| US20060280954A1 (en) * | 2005-06-13 | 2006-12-14 | Irene Spitsberg | Corrosion resistant sealant for outer EBL of silicon-containing substrate and processes for preparing same |
| US7442444B2 (en) * | 2005-06-13 | 2008-10-28 | General Electric Company | Bond coat for silicon-containing substrate for EBC and processes for preparing same |
| JP2009536587A (ja) * | 2006-01-25 | 2009-10-15 | セラマテック・インク | 種々の環境下での保護に供する環境および熱バリア皮膜 |
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| US4595637A (en) * | 1981-11-17 | 1986-06-17 | United Technologies Corporation | Plasma coatings comprised of sprayed fibers |
| US5110652A (en) * | 1989-12-04 | 1992-05-05 | Corning Incorporated | Shaped fiber-reinforced ceramic composite article |
| US6299988B1 (en) | 1998-04-27 | 2001-10-09 | General Electric Company | Ceramic with preferential oxygen reactive layer |
| US6296941B1 (en) | 1999-04-15 | 2001-10-02 | General Electric Company | Silicon based substrate with yttrium silicate environmental/thermal barrier layer |
| US6296942B1 (en) | 1999-04-15 | 2001-10-02 | General Electric Company | Silicon based substrate with calcium aluminosilicate environmental/thermal barrier layer |
| US6254935B1 (en) | 1999-04-15 | 2001-07-03 | United Technologies Corporation | Method for applying a barrier layer to a silicon based substrate |
| US6410148B1 (en) * | 1999-04-15 | 2002-06-25 | General Electric Co. | Silicon based substrate with environmental/ thermal barrier layer |
| US6444335B1 (en) * | 2000-04-06 | 2002-09-03 | General Electric Company | Thermal/environmental barrier coating for silicon-containing materials |
| US6541134B1 (en) * | 2000-06-22 | 2003-04-01 | The United States Of America As Represented By The Secretary Of The Air Force | Abradable thermal barrier coating for CMC structures |
| US6352790B1 (en) | 2000-06-29 | 2002-03-05 | United Technologies Corporation | Substrate containing silicon and a barrier layer which functions as a protective/thermal barrier coating |
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- 2003-05-22 US US10/443,341 patent/US6777093B1/en not_active Expired - Lifetime
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- 2004-05-21 DE DE200460004832 patent/DE602004004832T2/de not_active Expired - Lifetime
- 2004-05-21 EP EP20040253013 patent/EP1479661B1/en not_active Expired - Lifetime
- 2004-05-24 JP JP2004152719A patent/JP4113857B2/ja not_active Expired - Lifetime
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| DE602004004832T2 (de) | 2007-06-14 |
| EP1479661B1 (en) | 2007-02-21 |
| EP1479661A3 (en) | 2005-08-10 |
| JP2004345353A (ja) | 2004-12-09 |
| US6777093B1 (en) | 2004-08-17 |
| EP1479661A2 (en) | 2004-11-24 |
| DE602004004832D1 (de) | 2007-04-05 |
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