JP4717013B2 - 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 - Google Patents
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 Download PDFInfo
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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 (48)
- 金属基質、及びその表面上の溶解され添加されたイットリア及びハフニアを含むNdxZr1−xOyの式から実質的になる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を含む、金属物品。
- 溶解され添加された少なくとも6重量%のイットリアを含む請求項1に記載の物品。
- 0.5〜6重量%の溶解され添加されたハフニアを含む、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。
- 溶解され添加された1.5〜4重量%のハフニアを含む、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、層間の界面境界を伴う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、柱状微細構造を伴うセラミックコーティングである、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0.78〜1.02W/mKの熱伝導度を有する、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、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、5〜50μmの厚みを有する、請求項12に記載の物品。
- 金属基質、及びその表面上の遮熱性セラミックコーティングを含んでなり、当該セラミックコーティングが溶解され添加されたイットリア及びハフニアを含むNdxZr1−xOyの式から実質的になり、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。
- 0.5〜6重量%の溶解され添加されたハフニアを含む、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。
- 溶解され添加された1.5〜4重量%のハフニアを含む、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、層間の界面境界を伴う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、柱状微細構造を伴うセラミックコーティングである、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、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。
- 溶解され添加されたイットリア及びハフニアを含むNdxZr1−xOyの式から実質的になり、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であるセラミックを、イットリア、ハフニ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。
- ジルコニアセラミックに溶解され添加された0.5〜6重量%のハフニアを含む、請求項39に記載の方法。
- 溶解された7モル%のNd2O3および5モル%のイットリアを含む、請求項5に記載の物品。
- 溶解された7モル%のNd2O3および5モル%のイットリアを含む、請求項24に記載の物品。
- 溶解された7モル%のNd2O3および5モル%のイットリアがZrO2にドープされた、請求項41に記載の方法。
- 添加され溶解された10モル%のNd2O3および6重量%のイットリアを含む、請求項5に記載の物品。
- 添加され溶解された10モル%のNd2O3および6重量%のイットリアを含む、請求項24に記載の物品。
- 添加され溶解された10モル%のNd2O3および6重量%のイットリアを含む、請求項41に記載の方法。
- 添加され溶解された1.5〜4重量%のハフニアを含む、請求項47に記載の方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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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 |
Publications (3)
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JP2007522341A JP2007522341A (ja) | 2007-08-09 |
JP2007522341A5 JP2007522341A5 (ja) | 2007-09-20 |
JP4717013B2 true 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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EP1734145A1 (de) * | 2005-06-13 | 2006-12-20 | Siemens Aktiengesellschaft | Schichtsystem für ein Bauteil mit Wärmedämmschicht und metallischer Erosionsschutzschicht, Verfahren zur Herstellung und Verfahren zum Betreiben einer Dampfturbine |
EP1783242A1 (de) * | 2005-11-08 | 2007-05-09 | Siemens Aktiengesellschaft | Verfahren zum Vorheizen eines Bauteils und Beschichtungsverfahren |
DE102006013215A1 (de) * | 2006-03-22 | 2007-10-04 | Siemens Ag | Wärmedämmschicht-System |
CN100393909C (zh) * | 2006-05-11 | 2008-06-11 | 北京航空航天大学 | 用电子束物理气相沉积多孔树枝晶陶瓷层的热障涂层方法 |
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CN102569624A (zh) * | 2010-12-30 | 2012-07-11 | 佳荣能源科技股份有限公司 | 散热基板及其制造方法 |
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WO2013068315A1 (en) | 2011-11-10 | 2013-05-16 | Alstom Technology Ltd | High temperature thermal barrier coating |
WO2014143831A1 (en) | 2013-03-15 | 2014-09-18 | United Technologies Corporation | Coated articles and manufacture methods |
CN104562006B (zh) * | 2013-10-25 | 2018-08-14 | 通用电气公司 | 以耐腐蚀层保护的元件及制造该元件的方法 |
CN103553597B (zh) * | 2013-10-30 | 2014-08-27 | 西安博科新材料科技有限责任公司 | 一种自愈合ysz陶瓷热障涂层材料及其制备方法 |
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US9945318B2 (en) | 2015-12-04 | 2018-04-17 | Hyundai Motor Company | Cylinder block |
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DE102017005800A1 (de) | 2017-06-21 | 2018-12-27 | H.C. Starck Surface Technology and Ceramic Powders GmbH | Zirkoniumoxidpulver zum thermischen Spritzen |
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Also Published As
Publication number | Publication date |
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CN101291806B (zh) | 2014-09-03 |
EP1711339A4 (en) | 2009-11-11 |
WO2005120824A3 (en) | 2006-05-04 |
US20050153158A1 (en) | 2005-07-14 |
US7041383B2 (en) | 2006-05-09 |
JP2007522341A (ja) | 2007-08-09 |
US20050153160A1 (en) | 2005-07-14 |
WO2005120824A2 (en) | 2005-12-22 |
EP1711339A2 (en) | 2006-10-18 |
CN101291806A (zh) | 2008-10-22 |
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