WO1988008829A3 - Corps polycristallin transparent avec facteur de transmission eleve des ultraviolets, procede de production, et ses applications - Google Patents

Corps polycristallin transparent avec facteur de transmission eleve des ultraviolets, procede de production, et ses applications Download PDF

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Publication number
WO1988008829A3
WO1988008829A3 PCT/US1988/001496 US8801496W WO8808829A3 WO 1988008829 A3 WO1988008829 A3 WO 1988008829A3 US 8801496 W US8801496 W US 8801496W WO 8808829 A3 WO8808829 A3 WO 8808829A3
Authority
WO
WIPO (PCT)
Prior art keywords
microns
percent
applications
transmittance
transparent polycrystalline
Prior art date
Application number
PCT/US1988/001496
Other languages
English (en)
Other versions
WO1988008829A2 (fr
Inventor
Donald W Roy
James L Hastert
Lawrence E Coubrough
Kenneth Edward Green
Aurelio Trujillo
Original Assignee
Coors Porcelain Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/047,428 external-priority patent/US5244849A/en
Priority claimed from US07/047,422 external-priority patent/US4930731A/en
Application filed by Coors Porcelain Co filed Critical Coors Porcelain Co
Priority to JP50767888A priority Critical patent/JPH04502748A/ja
Priority to DE3887697T priority patent/DE3887697T2/de
Priority to KR1019890700020A priority patent/KR890701496A/ko
Publication of WO1988008829A2 publication Critical patent/WO1988008829A2/fr
Priority to AT88908431T priority patent/ATE101108T1/de
Publication of WO1988008829A3 publication Critical patent/WO1988008829A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • 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
    • C04B35/44—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 aluminates
    • C04B35/443—Magnesium aluminate spinel

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

Le corps polycristallin ayant un facteur élevé de transmission des ultraviolets est de préférence un corps fritté en spinelle d'alumine-magnésie ayant un facteur de transmission d'au moins 85 % dans la gamme des longueurs d'ondes comprises entre 0,4 et 0,8 microns et un facteur de transmission à certaines longueurs d'ondes dans cette gamme entre 0,2 environ et 0,4 microns environ d'au moins 86 % environ et une porosité inférieure à 0,001 % environ. Le corps fritté est produit par un procédé en deux étapes consistant à former un corps à porosité fermée à partir d'une poudre de spinelle et à soumettre le corps à porosité fermée à un traitement chaud sous pression isostatique. Le corps obtenu possède un facteur de transmission élevé d'un rayonnement électromagnétique dans la plage comprise entre 0,2 microns et 6 microns environ, est résistant à l'abrasion ou à l'érosion, ne se détériore pratiquement pas après avoir été exposé à la lumière ultraviolette, et est très solide. Le corps fritté est utile dans une grande variété d'applications, y compris en temps que dôme et fenêtre pour des missiles et des tubes de lancement.
PCT/US1988/001496 1987-05-05 1988-05-04 Corps polycristallin transparent avec facteur de transmission eleve des ultraviolets, procede de production, et ses applications WO1988008829A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP50767888A JPH04502748A (ja) 1988-05-04 1988-05-04 高紫外線透過率を有する透明多結晶体、その製造方法及びその用法
DE3887697T DE3887697T2 (de) 1987-05-06 1988-05-04 Transparenter polykristalliner gegenstand mit erhöhter ultraviolettdurchlässigkeit, verfahren zur herstellung und anwendung.
KR1019890700020A KR890701496A (ko) 1987-05-05 1988-05-04 고자외선 투과성이 있는 투명 다결정체와 그 생산방법 및 응용체
AT88908431T ATE101108T1 (de) 1987-05-06 1988-11-22 Transparenter polykristalliner gegenstand mit erhoehter ultraviolettdurchlaessigkeit, verfahren zur herstellung und anwendung.

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US047,428 1987-05-05
US047,403 1987-05-05
US047,422 1987-05-05
US4740387A 1987-05-06 1987-05-06
US07/047,428 US5244849A (en) 1987-05-06 1987-05-06 Method for producing transparent polycrystalline body with high ultraviolet transmittance
US07/047,422 US4930731A (en) 1987-05-06 1987-05-06 Dome and window for missiles and launch tubes with high ultraviolet transmittance
CA000572399A CA1325511C (fr) 1987-05-06 1988-07-19 Corps polycristallin transparent a transmittance elevee de l'ultraviolet, procede de fabrication connexe et utilisations qui en sont faites

Publications (2)

Publication Number Publication Date
WO1988008829A2 WO1988008829A2 (fr) 1988-11-17
WO1988008829A3 true WO1988008829A3 (fr) 1989-01-26

Family

ID=27426559

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1988/001496 WO1988008829A2 (fr) 1987-05-05 1988-05-04 Corps polycristallin transparent avec facteur de transmission eleve des ultraviolets, procede de production, et ses applications

Country Status (5)

Country Link
EP (1) EP0447390B1 (fr)
AU (1) AU2428688A (fr)
CA (1) CA1325511C (fr)
DE (1) DE3887697T2 (fr)
WO (1) WO1988008829A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332393B1 (fr) * 1988-03-09 1994-06-22 Sumitomo Electric Industries, Ltd. Méthode pour la production d'un objet fritté transparent à base de spinelle
DE102004004259B3 (de) 2004-01-23 2005-11-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Transparente polykristalline Sinterkeramik kubischer Kristallstruktur
EP1820050A1 (fr) * 2004-12-09 2007-08-22 Carl Zeiss SMT AG Element optique d'emission et objectif destine a un appareil d'exposition par projection microlithographique
JP2010514173A (ja) 2006-12-21 2010-04-30 カール・ツァイス・エスエムティー・アーゲー 透過性光学素子
DE102009055987B4 (de) 2009-11-20 2018-10-18 Schott Ag Spinell-Optokeramiken
DE102009055984A1 (de) 2009-11-20 2011-06-09 Schott Ag Gefärbte Spinell-Optokeramiken
JP7228793B2 (ja) * 2019-06-07 2023-02-27 パナソニックＩｐマネジメント株式会社 波長変換デバイス

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530209A (en) * 1966-03-17 1970-09-22 Westinghouse Electric Corp Method for forming magnesium aluminate spinel bodies
US3531308A (en) * 1967-10-09 1970-09-29 Corning Glass Works Transparent spinel body
US3768990A (en) * 1972-08-25 1973-10-30 Coors Porcelain Co Method for making heat resistant transparent optical elements
US3875277A (en) * 1973-07-30 1975-04-01 Westinghouse Electric Corp Method for making polycrystalline alumina arc tubes
US3950504A (en) * 1974-09-26 1976-04-13 Quigley Company, Inc. Process for producing magnesium aluminate spinel
US4171400A (en) * 1976-01-15 1979-10-16 The Harshaw Chemical Company Shaped press-forged normally frangible inorganic crystals
US4273587A (en) * 1978-08-14 1981-06-16 Ngk Insulators, Ltd. Polycrystalline transparent spinel sintered body and a method for producing the same
US4543346A (en) * 1982-12-27 1985-09-24 Ngk Insulators, Ltd. Polycrystalline transparent spinel sintered body and method of producing the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US531308A (en) * 1894-12-25 Harrow
US3974249A (en) * 1970-09-16 1976-08-10 Coors Porcelain Company Method for manufacturing a transparent ceramic body

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530209A (en) * 1966-03-17 1970-09-22 Westinghouse Electric Corp Method for forming magnesium aluminate spinel bodies
US3531308A (en) * 1967-10-09 1970-09-29 Corning Glass Works Transparent spinel body
US3768990A (en) * 1972-08-25 1973-10-30 Coors Porcelain Co Method for making heat resistant transparent optical elements
US3875277A (en) * 1973-07-30 1975-04-01 Westinghouse Electric Corp Method for making polycrystalline alumina arc tubes
US3950504A (en) * 1974-09-26 1976-04-13 Quigley Company, Inc. Process for producing magnesium aluminate spinel
US4171400A (en) * 1976-01-15 1979-10-16 The Harshaw Chemical Company Shaped press-forged normally frangible inorganic crystals
US4273587A (en) * 1978-08-14 1981-06-16 Ngk Insulators, Ltd. Polycrystalline transparent spinel sintered body and a method for producing the same
US4543346A (en) * 1982-12-27 1985-09-24 Ngk Insulators, Ltd. Polycrystalline transparent spinel sintered body and method of producing the same
US4584151A (en) * 1982-12-27 1986-04-22 Nkg Insulators, Ltd. Method of producing a polycrystalline transparent spinel sintered body

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0447390A4 *

Also Published As

Publication number Publication date
CA1325511C (fr) 1993-12-28
EP0447390B1 (fr) 1994-02-02
AU2428688A (en) 1988-12-06
DE3887697D1 (de) 1994-03-17
EP0447390A4 (en) 1991-12-11
EP0447390A1 (fr) 1991-09-25
DE3887697T2 (de) 1994-05-11
WO1988008829A2 (fr) 1988-11-17

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