JP2007522341A - 低熱伝導度を有する耐久性遮熱コーティング - Google Patents
低熱伝導度を有する耐久性遮熱コーティング Download PDFInfo
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- JP2007522341A JP2007522341A JP2006549494A JP2006549494A JP2007522341A JP 2007522341 A JP2007522341 A JP 2007522341A JP 2006549494 A JP2006549494 A JP 2006549494A JP 2006549494 A JP2006549494 A JP 2006549494A JP 2007522341 A JP2007522341 A JP 2007522341A
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- ceramic
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- 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 26
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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
- 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
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- Y10T428/12—All metal or with adjacent metals
- 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
- Y10T428/12611—Oxide-containing component
- Y10T428/12618—Plural oxides
-
- 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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12937—Co- or Ni-base component next to Fe-base component
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Abstract
Description
本発明は、一般的にガスタービンエンジンのような上昇した温度の適用において使用される遮熱(thermal barrier)コーティングの分野に関する。特に、本発明は、低熱伝導度並びに長期の実用寿命を有する熱絶縁セラミックコーティング、並びにコーティングが高温運転中の部品の過熱を防ぐために適用されるタービン部品(例えば動翼及び静翼)のような金属物品に関する。
最新のガスタービンエンジンにおいては、高められた運転温度における使用による、より高い推力及び効率が引き続き追求されている。然しながら、温度上昇の要求は、熱、酸化、侵食及び腐食性環境に暴露された場合のその機械的強度を維持するために、最も進歩したニッケル及びコバルト基材の超合金のタービン動翼及び静翼の能力によって制約される。従って金属部分への熱移動を減少させながら、タービンエンジンの運転温度を高めることが望まれている。一つのアプローチは、高温の運転環境から部品を絶縁するために、タービン動翼及び静翼に遮熱コーティングを適用することである。金属基質への温度を低下させるための遮熱コーティングの能力は、遮熱コーティングの熱伝導度に依存する。従ってガスタービンエンジンに使用される部品への熱の移動を有効に絶縁するための低熱伝導度を有し、並びに長期の実用寿命を有する被覆された部品を与える遮熱コーティングを開発することが望まれている。
端的に言えば、本発明は、NdxZr1−xOyの式を有し、溶解されたZを含むセラミックコーティングによる、金属物品への適用のための遮熱セラミックコーティングを提供し、ここで0<x<0.5及び1.75<y<2であり、そしてZは、Y、Mg、Ca、Hf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である。
本発明は、NdxZr1−xOyの式を有し、溶解されたZを含む遮熱セラミックコーティングを提供し、ここで0<x<0.5、1.75<y<2であり、そしてZは、Y、Mg、Ca、Hf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である。セラミックは、Ndの酸化物及び選択された金属酸化物の宿主のジルコニアセラミック中にドープすることによって形成され、非パイロクロア結晶構造を形成する。好ましい態様は、Zがイットリアであるものである。溶解されたイットリアを含むNdxZr1−xOyセラミックコーティングは、2〜15モル%、好ましくは7モル%のまでのNd2O3をドープすることによって調製することができる。イットリアのレベルは、一般的に2〜14モル%、好ましくは少なくとも6重量%である。更なる態様において、イットリアと共に、更にハフニウムも、一般的に約0.5〜6重量%、好ましくは1.5〜4重量%のレベルで加えられる。本発明のセラミックコーティングは、金属物品に適用されて、低熱伝導度、耐久性の向上をもたらす、侵食に対する抵抗性及び繰返し酸化に対する高い抵抗性を伴う遮熱コーティングを与える。
Claims (42)
- 金属基質及びその表面上のNdxZr1−xOyの式を有し、溶解されたZを含むセラミックコーティングによる遮熱性セラミックコーティングを含んでなり、ここで0<x<0.5及び1.75<y<2であり、セラミックコーティング中に7モル%までのNd2O3を含み、そしてZがY、Mg、Ca、Hf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である金属物品。
- Zが、Yであり、溶解された少なくとも6重量%のイットリアを含む請求項1に記載の物品。
- 更に溶解されたハフニアを含んでなる、請求項2に記載の物品。
- 溶解された2〜7モル%のNd2O3及び6〜10重量%のイットリアを含む、請求項2に記載の物品。
- 更に溶解された0.5〜6重量%のハフニアを含んでなる、請求項4に記載の物品。
- 更に前記セラミックコーティング及び前記金属基質間に金属結合コートを含んでなる、請求項1に記載の物品。
- 前記金属結合コートが、MがNi及び/又はCoから選択されるMCrAlYである、請求項6に記載の物品。
- 前記金属結合コートが、金属間アルミナイドである、請求項6に記載の物品。
- 前記セラミックコーティングが、柱状微細構造を有する、請求項1に記載の物品。
- 前記柱状微細構造が、直線状又は鋸歯状構造である、請求項9に記載の物品。
- 前記セラミックコーティングが、層状微細構造を有する、請求項1に記載の物品。
- 更に前記セラミックコーティングを覆う保護性セラミックトップコートを含んでなる、請求項1に記載の物品。
- 前記保護性セラミックトップコートが、高密度の又は幅広い柱状微細構造である、請求項12に記載の物品。
- 前記保護性セラミックトップコートが、6〜8重量%のYSZである、請求項12に記載の物品。
- 前記セラミックコーティングが、600℃〜1100℃で約0.78〜1.02W/mKの熱伝道度を有する、請求項1に記載の物品。
- 前記セラミックコーティングが、EBPVD法、空気プラズマ溶射法又はHVOF法によって適用される、請求項1に記載の物品。
- 前記金属物品が、タービンの部品である、請求項1に記載の物品。
- 前記タービンの部品が、ニッケル又はコバルト基材の超合金の金属基質を有する、請求項17に記載の物品。
- 前記セラミックコーティングが、約5〜500μmの範囲の厚みを有する、請求項1に記載の物品。
- 前記保護性セラミックトップコートが、約5〜50μmの厚みを有する、請求項6に記載の物品。
- 金属基質及びその表面上の、NdxZr1−xOyの式を有し、溶解したイットリアを含むセラミックコーティングである遮熱性セラミックコーティングを含んでなり、ここにおいて0<x<0.5及び1.75<y<2であり、溶解された少なくとも6重量%のイットリアを含む金属物品。
- 更に溶解されたハフニアを含んでなる、請求項21に記載の物品。
- 溶解された6〜10重量%のイットリア及び2〜15モル%のNd2O3を有する、請求項21に記載の物品。
- 更に溶解された0.5〜6重量%のハフニアを含んでなる、請求項23に記載の物品。
- 前記セラミックが、非パイロクロア結晶構造を有する、請求項21に記載の物品。
- 更に前記セラミックコーティング及び前記金属基質間に金属結合コートを含んでなる、請求項21に記載の物品。
- 前記金属結合コートが、MがNi及び/又はCoから選択されるMCrAlYである、請求項26に記載の物品。
- 前記金属結合コートが、金属間アルミナイドである、請求項26に記載の物品。
- 前記セラミックコーティングが、柱状微細構造を有する、請求項21に記載の物品。
- 前記柱状微細構造が、直線状又は鋸歯状構造である、請求項29に記載の物品。
- 前記セラミックコーティングが、層状微細構造を有する、請求項21に記載の物品。
- 更に前記セラミックコーティングを覆う保護性セラミックトップコートを含んでなる、請求項21に記載の物品。
- 前記保護性セラミックトップコートが、高密度の又は幅広い柱状微細構造である、請求項32に記載の物品。
- 前記保護性セラミックトップコートが、約5〜50μmの厚みを有する6〜8重量%のYSZである、請求項32に記載の物品。
- 前記セラミックコーティングが、600℃〜1100℃で約0.72〜1.02W/mKの熱伝道度を有する、請求項21に記載の物品。
- 前記セラミックコーティングが、EBPVD法、空気プラズマ溶射法又はHVOF法によって適用される、請求項21に記載の物品。
- 前記金属物品が、タービンの部品である、請求項21に記載の物品。
- 前記タービンの部品が、ニッケル又はコバルト基材の超合金の金属基質を有する、請求項37に記載の物品。
- 式NdxZr1−xOyを有し、溶解された少なくとも6重量%のイットリアを含み、0<x<0.5及び1.75<y<2である、溶解されたイットリアを含むセラミックを、イットリア及びネオジミアをジルコニアセラミックにドープすることによって形成し;そして
前記セラミックを金属物品上にコーティングとして適用すること;
を含んでなる、金属物品に遮熱性セラミックコーティングを適用するための方法。 - 前記セラミックが、電子ビーム物理蒸着法によって適用される、請求項39に記載の方法。
- 2〜7モル%のNd2O3及び6〜10重量%のY2O3が、ZrO2にドープされる、請求項39に記載の方法。
- 更にジルコニアセラミックにハフニアをドープすることを含んでなる、請求項39に記載の方法。
Applications Claiming Priority (5)
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US10/756,209 | 2004-01-12 | ||
US10/756,209 US20050153160A1 (en) | 2004-01-12 | 2004-01-12 | Durable thermal barrier coating having low thermal conductivity |
US10/835,667 US7041383B2 (en) | 2004-01-12 | 2004-05-03 | Durable thermal barrier coating having low thermal conductivity |
US10/835,667 | 2004-05-03 | ||
PCT/US2005/000725 WO2005112603A2 (en) | 2004-01-12 | 2005-01-11 | Durable thermal barrier coating having low thermal conductivity |
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JP2007522341A true JP2007522341A (ja) | 2007-08-09 |
JP2007522341A5 JP2007522341A5 (ja) | 2007-09-20 |
JP4717013B2 JP4717013B2 (ja) | 2011-07-06 |
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JP2006549494A Expired - Fee Related JP4717013B2 (ja) | 2004-01-12 | 2005-01-11 | 低熱伝導度を有する耐久性遮熱コーティングを有する金属物品 |
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US (2) | US20050153160A1 (ja) |
EP (1) | EP1711339A4 (ja) |
JP (1) | JP4717013B2 (ja) |
CN (1) | CN101291806B (ja) |
WO (1) | WO2005120824A2 (ja) |
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JP2002522646A (ja) * | 1998-08-11 | 2002-07-23 | シーメンス ウエスチングハウス パワー コーポレイション | 多層断熱被膜システム |
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JP2003160852A (ja) * | 2001-11-26 | 2003-06-06 | Mitsubishi Heavy Ind Ltd | 遮熱コーティング材、その製造方法、タービン部材及びガスタービン |
JP2003239086A (ja) * | 2001-12-21 | 2003-08-27 | Howmet Research Corp | 遮熱コーティング |
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JP2008544127A (ja) * | 2005-06-13 | 2008-12-04 | シーメンス アクチエンゲゼルシヤフト | 部品に対する断熱層と金属浸食防護層とを備えた被覆系と、その被覆系の製造方法と、蒸気タービンの運転方法 |
JP4749467B2 (ja) * | 2005-06-13 | 2011-08-17 | シーメンス アクチエンゲゼルシヤフト | 部品に対する断熱層と金属浸食防護層とを備えた被覆系と、その被覆系の製造方法と、蒸気タービンの運転方法 |
JP2009530535A (ja) * | 2006-03-22 | 2009-08-27 | シーメンス アクチエンゲゼルシヤフト | 遮熱層システム |
JP2016089831A (ja) * | 2014-10-30 | 2016-05-23 | ユナイテッド テクノロジーズ コーポレイションUnited Technologies Corporation | 遮熱システムおよび遮熱システムを構成要素に塗布する方法 |
US9945318B2 (en) | 2015-12-04 | 2018-04-17 | Hyundai Motor Company | Cylinder block |
Also Published As
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US20050153158A1 (en) | 2005-07-14 |
JP4717013B2 (ja) | 2011-07-06 |
CN101291806B (zh) | 2014-09-03 |
EP1711339A2 (en) | 2006-10-18 |
US7041383B2 (en) | 2006-05-09 |
WO2005120824A2 (en) | 2005-12-22 |
CN101291806A (zh) | 2008-10-22 |
WO2005120824A3 (en) | 2006-05-04 |
EP1711339A4 (en) | 2009-11-11 |
US20050153160A1 (en) | 2005-07-14 |
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