KR830005067A - 영구적인 세라믹 열차단피막을 가진 금속제품 제조방법 - Google Patents
영구적인 세라믹 열차단피막을 가진 금속제품 제조방법 Download PDFInfo
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- KR830005067A KR830005067A KR1019810000023A KR810000023A KR830005067A KR 830005067 A KR830005067 A KR 830005067A KR 1019810000023 A KR1019810000023 A KR 1019810000023A KR 810000023 A KR810000023 A KR 810000023A KR 830005067 A KR830005067 A KR 830005067A
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- mcraly
- ceramic
- alumina
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- 239000000919 ceramic Substances 0.000 title claims 11
- 230000004888 barrier function Effects 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000002184 metal Substances 0.000 title 1
- 239000010410 layer Substances 0.000 claims 26
- 238000000034 method Methods 0.000 claims 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 10
- 238000005498 polishing Methods 0.000 claims 8
- 230000008020 evaporation Effects 0.000 claims 4
- 238000001704 evaporation Methods 0.000 claims 4
- 239000007769 metal material Substances 0.000 claims 4
- 239000000758 substrate Substances 0.000 claims 4
- 230000001464 adherent effect Effects 0.000 claims 3
- 239000000853 adhesive Substances 0.000 claims 3
- 230000001070 adhesive effect Effects 0.000 claims 3
- 239000012790 adhesive layer Substances 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000005524 ceramic coating Methods 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 230000008021 deposition Effects 0.000 claims 2
- 230000003647 oxidation Effects 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- 229910052760 oxygen Inorganic materials 0.000 claims 2
- 239000001301 oxygen Substances 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 239000012720 thermal barrier coating Substances 0.000 claims 2
- 239000002245 particle Substances 0.000 claims 1
- 230000003746 surface roughness Effects 0.000 claims 1
- 238000001000 micrograph Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C29/00—Joining metals with the aid of glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
- C23C14/025—Metallic sublayers
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/028—Physical treatment to alter the texture of the substrate surface, e.g. grinding, polishing
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
- C23C14/083—Oxides of refractory metals or yttrium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/284—Selection of ceramic materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/60—Structure; Surface texture
- F05D2250/62—Structure; Surface texture smooth or fine
- F05D2250/621—Structure; Surface texture smooth or fine polished
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/923—Physical dimension
- Y10S428/924—Composite
- Y10S428/926—Thickness of individual layer specified
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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
- Y10T428/12472—Microscopic interfacial wave or roughness
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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
- Y10T428/12542—More than one such component
- Y10T428/12549—Adjacent to each other
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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
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- Y10T428/12583—Component contains compound of adjacent metal
- Y10T428/1259—Oxide
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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
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- 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
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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
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- 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
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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
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- Y10T428/00—Stock material or miscellaneous articles
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- 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
- Y10T428/12931—Co-, Fe-, or Ni-base components, alternative to each other
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명 피막을 나타내는 단면도. 제2도는 본 발명의 실험적인 피막을 나타내는 현미경 사진이다.
Claims (30)
- 초경합금기재의 표면을 세정하고, 그 세정된 표면에 얇은 부착성 MCrAlY층을 부착하고, 그 MCrAlY층을 연마하고, 그 연마된 MCrAlY층상에 얇고 균일한 부착성의 알루미나층을 형성한 다음, 그 알루미나층에 원주상 입자의 세라믹피막을 증발 부착에 의해 적용시키는 단계들로 구성된 것을 특징으로하는 금속 물질에 영구적인 세라믹 열차단피막을 형성시키기 위한 방법.
- MCrAlY 층이 증발부착에 의해 적용되는, 청구범위 1항의 방법.
- MCrAlY 층이 약 1-10밀의 두께를 가지는, 청구범위 1항의 방법.
- 증발부착된 MCrAlY가 계속하여 피이닝되는, 청구범위 1항의 방법.
- 피이닝된 피막이 계속하여 열처리되는, 청구범위 4항의 방법.
- MCrAlY 층이 연마후 약 20마이크로인치 RMS 이하의 표면가공도를 가지는, 청구범위 1항의 방법.
- 연마단계가 기계적수단에 의해 달성되는, 청구범위 1항의 방법.
- 연마단계가 화학적 수단에 의해 달성되는 청구범위 1항의 방법.
- 연마단계가 전해수단에 의해 달성되는, 청구범위 1항의 방법.
- 균일한 부착성 층이 열적 산화에 의해 형성되는, 청구범위 1항의 방법.
- 알루미나층의 두께가 약 0.01-0.1밀인, 청구범위 1항의 방법.
- 원주구조의 형성을 조장하도록 세라믹층의 적용시 금속물질을 조종하는 청구범위 1항의 방법.
- 원주상 세라믹층의 부착후, 그 피복된 제품을 산소 함유 대기내에서 열처리하여 화학량론적 세라믹 조성을 달성하도록 하는, 청구범위 1항의 방법.
- 초경합금기재의 표면을 세정하고, 그 세정된 표면에 얇고 부착성의 MCrAlY 층을 부착한 다음, 그층을 연마하고, 그 연마된 MCrAlY 층에 원주상 세라믹 피막을 증발 부착에 의해 형성시키고, MCrAlY와 원주상 세라믹 피막사이에 알루미나층이 형성되도록 산소함유 대기중에서 원주상 세라믹 피복된 금속물질을 열처리하는 단계들로 구성됨을 특징으로 하는, 금속물질에 영구적인 세라믹 열차단 피막을 형성시키기 위한 방법.
- MCrAlY 층이 증발부착에 의해 적용되는, 청구범위 14항의 방법.
- MCrAlY 층이 약 1-10밀 두께를 가지는, 청구범위 14항의 방법.
- 증발부착된 MCrAlY 층을 계속하여 피이닝하는, 청구범위 15항의 방법.
- 상기 피이닝된 피막을 열처리하는, 청구범위 17항의 방법.
- MCrAlY 층이 연마후 약 20마이크로인치 RMS 이하의 표면가공도를 가지는, 청구범위 14항의 방법.
- 연마단계가 기경적수단에 의해 달성되는, 청구범위 14항의 방법.
- 연마단계가 화학적 수단에 의해 달성되는, 청구범위 14항의 방법.
- 연마단계가 전해수단에 의해 행해지는, 청구범위 14항의 방법.
- 균일한 부착성층이 열적 산화에 의해 형성되는, 청구범위 14항의 방법.
- 알루미나층의 두께가 약 0.01-0.1밀인, 청구범위 14항의 방법.
- 원주상 구조의 형성을 조장하도록 세라믹층의 적용시 금속물질을 조작하는, 청구범위 14항의 방법.
- 초경합금 기재상에 부착성의 치밀한 MCrAlY 층이 피복되고, MCrAlY와 알루미나의 접촉영역이 연마되어 낮은 정도의 표면거침함을 갖도록 MCrAlY 표면위에 알루미나층이 형성되고, 그 알루미나 층상에 부착성의 원주상 세라믹층이 형성되어 구성됨을 특징으로 하는, 부착성의 영구적인 세라믹 열차단피막을 가진 초경합금 제품.
- MCrAlY의 두께가 약 1-10밀인, 청구범위 26항의 제품.
- MCrAlY-알루미나 접촉영역에서의 MCrAlY 표면의 거칠함이 약 20마이크로인치 RMS 이하인, 청구범위 26항의 제품.
- 알루미나층의 두께가 약 0.01-0.1밀인, 청구범위 26항의 제품.
- 원주상 세라믹 피막의 두께가 약 1-50밀인, 청구범위 26항의 제품.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/109,955 US4321310A (en) | 1980-01-07 | 1980-01-07 | Columnar grain ceramic thermal barrier coatings on polished substrates |
US109955 | 1980-01-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR830005067A true KR830005067A (ko) | 1983-07-23 |
KR840001682B1 KR840001682B1 (ko) | 1984-10-15 |
Family
ID=22330483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019810000023A KR840001682B1 (ko) | 1980-01-07 | 1981-01-07 | 내구성세라믹 열차단피막을 코우팅한 금속제품의 제조방법 |
Country Status (13)
Country | Link |
---|---|
US (1) | US4321310A (ko) |
EP (1) | EP0044329B1 (ko) |
JP (1) | JPH0118994B2 (ko) |
KR (1) | KR840001682B1 (ko) |
AU (1) | AU543682B2 (ko) |
BE (1) | BE886974A (ko) |
BR (1) | BR8105749A (ko) |
CA (1) | CA1167328A (ko) |
DE (1) | DE3162618D1 (ko) |
IL (1) | IL61877A (ko) |
IT (1) | IT1134958B (ko) |
NO (1) | NO156747C (ko) |
WO (1) | WO1981001983A1 (ko) |
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- 1981-01-07 AU AU67732/81A patent/AU543682B2/en not_active Expired
- 1981-01-07 IL IL61877A patent/IL61877A/xx not_active IP Right Cessation
- 1981-01-07 WO PCT/US1981/000022 patent/WO1981001983A1/en active IP Right Grant
- 1981-01-07 DE DE8181900392T patent/DE3162618D1/de not_active Expired
- 1981-09-04 NO NO81812999A patent/NO156747C/no unknown
Also Published As
Publication number | Publication date |
---|---|
BE886974A (fr) | 1981-05-04 |
US4321310A (en) | 1982-03-23 |
EP0044329A1 (en) | 1982-01-27 |
NO156747C (no) | 1987-11-18 |
CA1167328A (en) | 1984-05-15 |
DE3162618D1 (en) | 1984-07-12 |
AU6773281A (en) | 1981-08-07 |
JPH0118994B2 (ko) | 1989-04-10 |
WO1981001983A1 (en) | 1981-07-23 |
IT8119031A0 (it) | 1981-01-07 |
JPS57500292A (ko) | 1982-02-18 |
EP0044329B1 (en) | 1984-06-06 |
NO812999L (no) | 1981-09-04 |
BR8105749A (pt) | 1981-11-24 |
IT1134958B (it) | 1986-08-20 |
NO156747B (no) | 1987-08-10 |
IL61877A (en) | 1984-09-30 |
AU543682B2 (en) | 1985-04-26 |
KR840001682B1 (ko) | 1984-10-15 |
EP0044329A4 (en) | 1982-06-10 |
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