JP2005273017A - 断熱被覆の熱伝導率低減方法、断熱被覆および断熱被覆部品 - Google Patents
断熱被覆の熱伝導率低減方法、断熱被覆および断熱被覆部品 Download PDFInfo
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- JP2005273017A JP2005273017A JP2005078757A JP2005078757A JP2005273017A JP 2005273017 A JP2005273017 A JP 2005273017A JP 2005078757 A JP2005078757 A JP 2005078757A JP 2005078757 A JP2005078757 A JP 2005078757A JP 2005273017 A JP2005273017 A JP 2005273017A
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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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- 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
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
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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
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
- C23C28/44—Coatings including alternating layers following a pattern, a periodic or defined repetition characterized by a measurable physical property of the alternating layer or system, e.g. thickness, density, hardness
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- Y10T428/00—Stock material or miscellaneous articles
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- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
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Abstract
【解決手段】多孔度の組み込みによって断熱被覆(TBC)内の熱伝導率を低減する方法は、層を形成するように、TBCマトリックスと一時的物質11とを含む混合物を部品上に堆積させ、多孔質ネットワークを形成するように、一時的物質の一部を遊離させるのに十分な温度および時間でこの層を加熱する、工程を含む。
【選択図】図1
Description
マトリックスTBC酸化物として7YSZのEB−PVDを、一時的物質として炭素かまたはモリブデンかどちらかと共に、ニッケル基合金で作成された部品上に層状にうまく堆積した。両方の物質とも、EB−PVD処理環境中は所望の仕方で機能するのに十分に安定であることが分かった。すなわち、これらは、同時蒸着され、堆積され、その後、除去(2050F/4時間/空気、被覆後の熱処理)されて、純粋な7YSZに比較して27%の体積分率を有する細孔構造が生成された。熱伝導率は、1.1W/m℃であると測定された。
Claims (25)
- 多孔度の組み込みによって断熱被覆(TBC)内の熱伝導率を低減する方法であって、
層を形成するように、TBCマトリックスと一時的物質とを含む混合物を部品上に堆積させ、
多孔質ネットワークを形成するように、一時的物質の一部を遊離させるのに十分な温度および時間でこの層を加熱する、
工程を含むことを特徴とする方法。 - 前記のTBCマトリックスを堆積させることは、7YSZ、炭化物、窒化物、ケイ化物、およびジルコニウムから成る群より選択されるセラミックを堆積させることを含むことを特徴とする請求項1記載の方法。
- 前記の一時的物質を堆積させることは、炭素、モリブデン、およびタングステンから成る群より選択される一時的物質を堆積させることを含むことを特徴とする請求項1記載の方法。
- 前記の堆積工程は、電子ビーム物理蒸着処理(EB−PVD)によってTBCマトリックスと一時的物質とを含む混合物を堆積させることを含むことを特徴とする請求項1記載の方法。
- 前記のEB−PVDによって混合物を堆積させることは、粒子状TBCマトリックスと粒子状一時的物質とを使用することを含むことを特徴とする請求項4記載の方法。
- 前記のEB−PVDによって混合物を堆積させることは、TBCマトリックスのインゴットと一時的物質のインゴットとを使用することを含むことを特徴とする請求項4記載の方法。
- 前記のEB−PVDによって混合物を堆積させることは、ほぼ均一に分散したTBCマトリックスと一時的物質とから構成されるターゲットを使用することを含むことを特徴とする請求項4記載の方法。
- 前記の加熱することは、前記層を部品の溶融温度より低い温度に加熱することを含むことを特徴とする請求項1記載の方法。
- 前記の加熱することは、前記層を部品の初期融点より低い温度に加熱することを含むことを特徴とする請求項1記載の方法。
- 前記の加熱することは、前記層をほぼ1750°Fと2100°Fの間の温度に加熱することを含むことを特徴とする請求項1記載の方法。
- 前記の加熱することは、前記層を少なくとも90%の一時的物質を遊離させるのに十分な温度および時間で加熱することを含むことを特徴とする請求項1記載の方法。
- どのような一時的物質も実質的に含有されない少なくとも一層のTBC混合物を堆積させるさらなる工程を含むことを特徴とする請求項1記載の方法。
- 前記の混合物を堆積させることは、前記層を形成するようにTBCマトリックスと一時的物質とが堆積される速度を変更し、傾斜した多孔度を有する層を生成するようにこの層を加熱する、工程を含むことを特徴とする請求項1記載の方法。
- 前記の加熱することは、体積で前記層の40%以下の体積から構成される多孔質ネットワークを生成するように前記層を加熱することを含むことを特徴とする請求項1記載の方法。
- 前記の堆積工程は、ガスタービンエンジン部材上に前記混合物を堆積させることを含むことを特徴とする請求項1記載の方法。
- TBCマトリックスと、
このTBCマトリックスを通って延在する多孔質ネットワークと、
を含むことを特徴とする被覆層。 - 前記TBCマトリックスは、7YSZ、炭化物、窒化物、ケイ化物、およびジルコニウムから成る群より選択されることを特徴とする請求項16記載の被覆層。
- 前記多孔質ネットワークは、体積でTBCマトリックスの40%以下の体積を有することを特徴とする請求項16記載の被覆層。
- 前記多孔質ネットワークは、傾斜した多孔度であることを特徴とする請求項16記載の被覆層。
- 前記多孔質ネットワークは、各細孔が10ナノメートルと100ナノメートルの間の幅を有する複数の細孔から構成されることを特徴とする請求項16記載の被覆層。
- 部品と、
この部品に施された、TBCマトリックスと多孔質ネットワークとを含む少なくとも一層と、
を備えることを特徴とする被覆部品。 - 前記TBCマトリックスは、7YSZ、炭化物、窒化物、ケイ化物、およびジルコニウムから成る群より選択されることを特徴とする請求項21記載の被覆部品。
- 前記多孔質ネットワークは、傾斜した多孔度であることを特徴とする請求項21記載の被覆部品。
- 前記多孔質ネットワークは、各細孔が10ナノメートルと100ナノメートルの間の幅を有する複数の細孔から構成されることを特徴とする請求項21記載の被覆部品。
- 前記多孔質ネットワークは、体積でTBCマトリックスの40%以下の体積を有することを特徴とする請求項21記載の被覆部品。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/805,922 US20050208337A1 (en) | 2004-03-22 | 2004-03-22 | Reduced thermal conductivity TBC by EB-PVD process to incorporate porosity |
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Publication Number | Publication Date |
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JP2005273017A true JP2005273017A (ja) | 2005-10-06 |
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Application Number | Title | Priority Date | Filing Date |
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JP2005078757A Ceased JP2005273017A (ja) | 2004-03-22 | 2005-03-18 | 断熱被覆の熱伝導率低減方法、断熱被覆および断熱被覆部品 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050208337A1 (ja) |
EP (1) | EP1580296B1 (ja) |
JP (1) | JP2005273017A (ja) |
AT (1) | ATE382720T1 (ja) |
DE (1) | DE602005004055T2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2019099921A (ja) * | 2017-12-04 | 2019-06-24 | ゼネラル・エレクトリック・カンパニイ | 多孔質遮熱コーティングを形成する方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6983718B1 (en) * | 1999-08-04 | 2006-01-10 | General Electric Company | Electron beam physical vapor deposition apparatus |
SG128580A1 (en) * | 2005-06-08 | 2007-01-30 | United Technologies Corp | Reduced thermal conductivity thermal barrier coating by electron beam-physical vapor deposition process |
DE102014018693A1 (de) | 2014-12-18 | 2016-06-23 | Mahle International Gmbh | Verfahren zum Herstellen einer Wärmedämmschicht sowie mittels dieses Verfahrens hergestellte Wärmedämmschicht |
US9657387B1 (en) * | 2016-04-28 | 2017-05-23 | General Electric Company | Methods of forming a multilayer thermal barrier coating system |
CN110042371B (zh) * | 2019-05-24 | 2023-10-20 | 北京化工大学 | 一种采用低温等离子体制备多孔性热障涂层的装置及方法 |
CN115637402B (zh) * | 2022-11-07 | 2023-09-01 | 哈尔滨工业大学 | 一种基于静电场辅助项转化制备具有多级孔或梯度孔耐高温可磨耗封严涂层的方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US5512382A (en) * | 1995-05-08 | 1996-04-30 | Alliedsignal Inc. | Porous thermal barrier coating |
US5824423A (en) * | 1996-02-07 | 1998-10-20 | N.V. Interturbine | Thermal barrier coating system and methods |
US6946208B2 (en) * | 1996-12-10 | 2005-09-20 | Siemens Westinghouse Power Corporation | Sinter resistant abradable thermal barrier coating |
US6835465B2 (en) * | 1996-12-10 | 2004-12-28 | Siemens Westinghouse Power Corporation | Thermal barrier layer and process for producing the same |
UA74150C2 (uk) * | 2002-01-09 | 2005-11-15 | Дженерал Електрік Компані | Спосіб формування покриття для створення теплового бар'єра та покриття для створення теплового бар'єра |
US6998172B2 (en) * | 2002-01-09 | 2006-02-14 | General Electric Company | Thermally-stabilized thermal barrier coating |
WO2004043691A1 (en) * | 2002-11-12 | 2004-05-27 | University Of Virginia Patent Foundation | Extremely strain tolerant thermal protection coating and related method and apparatus thereof |
US7150921B2 (en) * | 2004-05-18 | 2006-12-19 | General Electric Company | Bi-layer HVOF coating with controlled porosity for use in thermal barrier coatings |
US20070116883A1 (en) * | 2005-11-22 | 2007-05-24 | General Electric Company | Process for forming thermal barrier coating resistant to infiltration |
-
2004
- 2004-03-22 US US10/805,922 patent/US20050208337A1/en not_active Abandoned
-
2005
- 2005-03-18 JP JP2005078757A patent/JP2005273017A/ja not_active Ceased
- 2005-03-22 AT AT05251745T patent/ATE382720T1/de not_active IP Right Cessation
- 2005-03-22 EP EP20050251745 patent/EP1580296B1/en active Active
- 2005-03-22 DE DE200560004055 patent/DE602005004055T2/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019099921A (ja) * | 2017-12-04 | 2019-06-24 | ゼネラル・エレクトリック・カンパニイ | 多孔質遮熱コーティングを形成する方法 |
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Publication number | Publication date |
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ATE382720T1 (de) | 2008-01-15 |
EP1580296A2 (en) | 2005-09-28 |
EP1580296B1 (en) | 2008-01-02 |
US20050208337A1 (en) | 2005-09-22 |
DE602005004055T2 (de) | 2008-12-18 |
EP1580296A3 (en) | 2005-10-05 |
DE602005004055D1 (de) | 2008-02-14 |
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