JP5483792B2 - 低熱伝導率の遮熱コーティングに有用なセラミック組成物 - Google Patents
低熱伝導率の遮熱コーティングに有用なセラミック組成物 Download PDFInfo
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- JP5483792B2 JP5483792B2 JP2004315273A JP2004315273A JP5483792B2 JP 5483792 B2 JP5483792 B2 JP 5483792B2 JP 2004315273 A JP2004315273 A JP 2004315273A JP 2004315273 A JP2004315273 A JP 2004315273A JP 5483792 B2 JP5483792 B2 JP 5483792B2
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- thermal barrier
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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
- C04B35/48—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
- C04B35/486—Fine ceramics
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
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- F05D2300/611—Coating
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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
- Y10T428/12—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
-
- 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.]
- Y10T428/12535—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
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Coating By Spraying Or Casting (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Products (AREA)
- Physical Vapour Deposition (AREA)
Description
(1)約91モル%以上のジルコニアと、
(2)約9モル%以下の安定化量の安定剤成分とを含有し、安定剤成分は
(a)酸化イットリウム、酸化カルシウム、酸化セリウム、酸化スカンジウム、酸化マグネシウム、酸化インジウム及びこれらの混合物からなる群から選択される第1金属酸化物及び
(b)酸化ランタン、酸化ガドリニウム、酸化ネオジム、酸化サマリウム、酸化ジスプロシウム、酸化エルビウム、酸化イッテルビウム及びこれらの混合物からなる群から選択される三価金属原子の第2金属酸化物
を含有する。
(A)金属基体、
(B)所望に応じて設けられる、金属基体に隣接し、重なるボンドコート層及び
(C)ボンドコート層に隣接し、重なる(ボンドコート層がない場合には金属基体に重なる)、上記セラミック組成物から形成された遮熱コーティング
を含む。
(A)所望に応じて、金属基体上にボンドコート層を形成し、
(B)ボンドコート層上に(ボンドコート層がない場合には金属基体上に)上記セラミック組成物を堆積して遮熱コーティングを形成する
工程を含む。
ここで、αは熱拡散率、pは気孔率、Cpは比熱(J/gK単位)、Dtは理論密度である。上式(1)からわかるように、熱伝導率は熱拡散率と気孔率に依存する。熱拡散率は、被覆組成物及びミクロ構造(即ち、内部境界のより高い安定性、より低い熱拡散率)により影響され、得られる遮熱コーティングの熱伝導率を改良する、特に下げる観点から、本発明のセラミック組成物の焦点である。
14 金属基体
18 ボンドコート層
22 遮熱コーティング
Claims (6)
- セラミック組成物であって、
(1)91モル%以上のジルコニアと、
(2)5.5〜6.5モル%の安定剤成分とを含有し、安定剤成分は
(a)前記セラミック組成物の4〜5モル%の酸化イットリウム及び
(b)前記セラミック組成物の0.8〜1.5モル%の酸化ランタンを含有し、
前記セラミック組成物が、酸化ランタンを、酸化ランタン対全安定剤成分のモル%比0.2〜0.3にて含有することを特徴とする、セラミック組成物。 - (A)金属基体(14)、
(B)金属基体(14)に隣接し、重なるボンドコート層(18)及び
(C)ボンドコート層(18)に隣接し、重なる、請求項1に項記載の組成物を含有する遮熱コーティング(22)
を含む熱保護物品(10)。 - タービンエンジン部品(10)であって、
(A)金属基体(14)、
(B)金属基体(14)に隣接し、重なるボンドコート層(18)及び
(C)ボンドコート層(18)に隣接し、重なる、請求項1に項記載の組成物を含有する遮熱コーティング(22)
を含み、
前記遮熱コーティング(22)が厚さ25〜2500μm(1〜100ミル)で、耐歪み性柱状構造を有することを特徴とする、タービンエンジン部品(10)。 - 金属基体(14)に隣接し、重なるボンドコート層(18)上に遮熱コーティング(22)を製造する方法であって、
(A)セラミック組成物を堆積することによりボンドコート層(18)上に遮熱コーティング(22)を形成する工程を含み、
前記セラミック組成物は
(1)ジルコニア91モル%以上と、
(2)5.5〜6.5モル%の安定剤成分とを含有し、安定剤成分は
(a)前記セラミック組成物の4〜5モル%の酸化イットリウム及び
(b)前記セラミック組成物の0.8〜1.5モル%の酸化ランタンを含有し、
前記セラミック組成物が、酸化ランタン対全安定剤成分のモル%比0.2〜0.3にて酸化ランタンを含有することを特徴とする、遮熱コーティングの製造方法。 - セラミック組成物を物理蒸着により堆積して、耐歪み性柱状構造を有する遮熱コーティング(22)を形成する、請求項4記載の方法。
- ボンドコート層(18)が、前記金属基体(14)に隣接して重なり、
前記遮熱コーティング(22)が前記ボンドコート層(18)に形成される、請求項5に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/748,520 | 2003-12-30 | ||
US10/748,520 US7364802B2 (en) | 2003-12-30 | 2003-12-30 | Ceramic compositions useful in thermal barrier coatings having reduced thermal conductivity |
Publications (2)
Publication Number | Publication Date |
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JP2005200291A JP2005200291A (ja) | 2005-07-28 |
JP5483792B2 true JP5483792B2 (ja) | 2014-05-07 |
Family
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JP2004315273A Expired - Fee Related JP5483792B2 (ja) | 2003-12-30 | 2004-10-29 | 低熱伝導率の遮熱コーティングに有用なセラミック組成物 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7364802B2 (ja) |
EP (1) | EP1550644B1 (ja) |
JP (1) | JP5483792B2 (ja) |
SG (2) | SG112922A1 (ja) |
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-
2003
- 2003-12-30 US US10/748,520 patent/US7364802B2/en not_active Expired - Fee Related
-
2004
- 2004-10-26 SG SG200406244A patent/SG112922A1/en unknown
- 2004-10-26 SG SG200704905-9A patent/SG133617A1/en unknown
- 2004-10-27 EP EP04256627.3A patent/EP1550644B1/en not_active Expired - Fee Related
- 2004-10-29 JP JP2004315273A patent/JP5483792B2/ja not_active Expired - Fee Related
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SG112922A1 (en) | 2005-07-28 |
SG133617A1 (en) | 2007-07-30 |
EP1550644A1 (en) | 2005-07-06 |
JP2005200291A (ja) | 2005-07-28 |
US7364802B2 (en) | 2008-04-29 |
US20050142395A1 (en) | 2005-06-30 |
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