HU180486B - Method for producing polycrystalline transparent alumina bodies of high direct light transmission - Google Patents

Method for producing polycrystalline transparent alumina bodies of high direct light transmission

Info

Publication number
HU180486B
HU180486B HU79IU297A HUIU000297A HU180486B HU 180486 B HU180486 B HU 180486B HU 79IU297 A HU79IU297 A HU 79IU297A HU IU000297 A HUIU000297 A HU IU000297A HU 180486 B HU180486 B HU 180486B
Authority
HU
Hungary
Prior art keywords
light transmission
direct light
high direct
producing polycrystalline
transparent alumina
Prior art date
Application number
HU79IU297A
Other languages
English (en)
Inventor
Isao Oda
Kochiro Maekawa
Original Assignee
Ngk Insulators Ltd
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
Application filed by Ngk Insulators Ltd filed Critical Ngk Insulators Ltd
Publication of HU180486B publication Critical patent/HU180486B/hu

Links

Classifications

    • 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
    • C04B35/10—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 aluminium oxide
    • C04B35/111—Fine ceramics
    • C04B35/115—Translucent or transparent products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/302—Vessels; Containers characterised by the material of the vessel
    • 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
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/91—Sintering to produce translucent inorganic article
HU79IU297A 1978-05-12 1979-05-11 Method for producing polycrystalline transparent alumina bodies of high direct light transmission HU180486B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53055459A JPS6022670B2 (ja) 1978-05-12 1978-05-12 多結晶透明アルミナ及びその製造法ならびに高圧蒸気放射灯用発光管

Publications (1)

Publication Number Publication Date
HU180486B true HU180486B (en) 1983-03-28

Family

ID=12999179

Family Applications (1)

Application Number Title Priority Date Filing Date
HU79IU297A HU180486B (en) 1978-05-12 1979-05-11 Method for producing polycrystalline transparent alumina bodies of high direct light transmission

Country Status (10)

Country Link
US (1) US4222978A (hu)
JP (1) JPS6022670B2 (hu)
AU (1) AU531238B2 (hu)
CA (1) CA1103000A (hu)
DE (1) DE2918729A1 (hu)
FR (1) FR2425414B1 (hu)
GB (1) GB2022564B (hu)
HU (1) HU180486B (hu)
NL (1) NL179365C (hu)
PL (1) PL126082B1 (hu)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679847A (en) * 1979-12-04 1981-06-30 Toshiba Ceramics Co Ltd Light transmittable alumina tube and high pressure sodium vapor discharge lamp
FR2475533A1 (fr) * 1980-02-08 1981-08-14 Euroceral Procede de fabrication de pieces, notamment de tubes, en alumine translucide
US4285732A (en) * 1980-03-11 1981-08-25 General Electric Company Alumina ceramic
JPS6048466B2 (ja) * 1980-05-15 1985-10-28 日本碍子株式会社 多結晶透明アルミナ焼結体の製造法
HU185242B (en) * 1981-02-18 1984-12-28 Egyesuelt Izzolampa Method for producing light-passing alumina sintered bodies advantageously cylinder-symmetrical ones
US4520116A (en) * 1981-08-31 1985-05-28 Raytheon Company Transparent aluminum oxynitride and method of manufacture
US4481300A (en) * 1981-08-31 1984-11-06 Raytheon Company Aluminum oxynitride having improved optical characteristics and method of manufacture
JPS58185478A (ja) * 1982-04-26 1983-10-29 東芝セラミツクス株式会社 透光性アルミナ磁器の製造方法
US4620131A (en) * 1983-07-25 1986-10-28 U.S. Philips Corporation Lamp with discharge vessel made of densely sintered translucent aluminium oxide
DE3376001D1 (en) * 1983-08-26 1988-04-21 Hoechst Ceram Tec Ag Process and apparatus for producing sintered polycrystalline translucent tubes
GB2170191B (en) * 1985-01-26 1988-08-24 Glaverbel Forming refractory masses and composition of matter for use in forming such refractory masses
NL8502457A (nl) * 1985-09-09 1987-04-01 Philips Nv Gasdicht gesinterd translucent aluminiumoxyde.
US4797238A (en) * 1985-11-27 1989-01-10 Gte Laboratories Incorporated Rapid-sintering of alumina
US4762655A (en) * 1985-11-27 1988-08-09 Gte Laboratories Incorporated Method of sintering translucent alumina
US4837069A (en) * 1987-01-07 1989-06-06 Minnesota Mining And Manufacturing Company Transparent alumina microspheres
GB2211179B (en) * 1987-10-15 1992-08-12 Hoechst Ceram Tec Ag Aluminium oxide shaped articles and process for their manufacture
US4948538A (en) * 1988-10-11 1990-08-14 Gte Laboratories Incorporated Method of making translucent alumina articles
US5780377A (en) * 1993-09-02 1998-07-14 Toto Ltd. Light-transmissive ceramics and method of manufacturing same
US5376606A (en) * 1993-12-30 1994-12-27 Korea Institute Of Science And Technology Light-transmissive polycrystalline alumina ceramics
JP3783445B2 (ja) 1999-01-29 2006-06-07 住友化学株式会社 透光性アルミナ焼結体の製造方法およびその用途
US6642656B2 (en) 2000-03-28 2003-11-04 Ngk Insulators, Ltd. Corrosion-resistant alumina member and arc tube for high-intensity discharge lamp
EP1138647A1 (en) * 2000-03-28 2001-10-04 Ngk Insulators, Ltd. Corrosion-resistant alumina member and arc tube for high intensity discharge lamp
JP4144176B2 (ja) * 2000-11-22 2008-09-03 日本碍子株式会社 高圧放電灯用発光容器
JP2004269290A (ja) * 2003-03-06 2004-09-30 Ngk Insulators Ltd 透光性アルミナセラミックスの製造方法、透光性アルミナセラミックス、高圧放電灯用発光容器、造粒粉末および成形体
US7678725B2 (en) * 2007-05-14 2010-03-16 General Electric Company Translucent polycrystalline alumina ceramic
US20080283522A1 (en) * 2007-05-14 2008-11-20 Shuyl Qin Translucent polycrystalline alumina ceramic
EP2305621B1 (en) * 2009-09-09 2015-04-22 NGK Insulators, Ltd. Translucent polycrystalline sintered body, method for producing the same, and arc tube for high-intensity discharge lamp
US20110177747A1 (en) * 2010-01-21 2011-07-21 Thomas Patrician Method of Making a Fritless Seal in a Ceramic Arc Tube for a Discharge Lamp
JP5993627B2 (ja) * 2012-06-20 2016-09-14 日本特殊陶業株式会社 アルミナ質焼結体及びその製造方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1126014A (fr) * 1955-05-09 1956-11-13 Abrasifs Du Sud Ouest Pièces compactes en corindon brun
US3026210A (en) * 1961-01-03 1962-03-20 Gen Electric Transparent alumina and method of preparation
DE1261436C2 (de) 1961-12-01 1973-07-26 Feldmuehle Ag Sinterkoerper aus Aluminiumoxid
US3311482A (en) * 1966-01-25 1967-03-28 Emil A Klingler Sintered transparent bodies of aluminum oxide and method of preparing the same
GB1252851A (hu) * 1969-08-27 1971-11-10
US4031177A (en) * 1969-10-31 1977-06-21 Compagnie Generale D'electroceramique Process for the manufacture of articles of translucent alumina
JPS5137543B2 (hu) * 1972-05-18 1976-10-16
US3834915A (en) * 1972-07-24 1974-09-10 Gte Sylvania Inc Fine grain translucent alumina
GB1443741A (en) * 1973-07-03 1976-07-21 Nikex Nehezipari Kulkere Process for the manufacture of translucent polycrystalline alumina bodies
US3935495A (en) * 1974-03-22 1976-01-27 General Electric Company Chemically polished polycrystalline alumina material
JPS548363B2 (hu) * 1974-06-11 1979-04-14
JPS51107683A (en) * 1975-03-18 1976-09-24 Ngk Insulators Ltd Taketsushotomeiaruminahatsukokan
GB1597162A (en) * 1977-03-10 1981-09-03 Ngk Insulators Ltd Transparent polycrystalline alumina and high pressure vapour discharge lamp
US4169875A (en) * 1977-03-11 1979-10-02 General Electric Company Method of producing a tubular body of polycrystalline alumina
GB1595518A (en) * 1977-03-11 1981-08-12 Gen Electric Polycrystalline alumina material

Also Published As

Publication number Publication date
AU4665379A (en) 1979-12-06
FR2425414A1 (hu) 1979-12-07
DE2918729C2 (hu) 1988-03-31
NL7903530A (nl) 1979-11-14
GB2022564A (en) 1979-12-19
AU531238B2 (en) 1983-08-18
NL179365C (nl) 1986-09-01
JPS54148008A (en) 1979-11-19
CA1103000A (en) 1981-06-16
DE2918729A1 (de) 1979-11-15
NL179365B (nl) 1986-04-01
PL215532A1 (hu) 1980-02-11
PL126082B1 (en) 1983-07-30
JPS6022670B2 (ja) 1985-06-03
FR2425414B1 (hu) 1983-06-17
US4222978A (en) 1980-09-16
GB2022564B (en) 1982-08-11

Similar Documents

Publication Publication Date Title
HU180486B (en) Method for producing polycrystalline transparent alumina bodies of high direct light transmission
GB2014558B (en) Method of forming glass flaments
GB2023130B (en) Method of producing optical fibre performs
JPS5688277A (en) Method of manufacturing light source
JPS5479642A (en) Method of producing light waveguide
JPS5617302A (en) Method of making light reflector
BG43862A3 (en) Method for preparing of pure aluminium
JPS5425A (en) Method of chamfering glass substrate
JPS5688278A (en) Method of manufacturing light source
JPS54111840A (en) Lighting method and apparatus of sunlight by optical fiber
AU511422B2 (en) Method of forming glass containers
GB2015987B (en) Method of producing refractories
JPS53129595A (en) Method of making light reflector
JPS55133703A (en) Method of producing transparent conductive film
BG32858A3 (en) Method for obtaining of crystal sodium cephamandolmethanol
SU670575A1 (ru) Способ получени гексаалкилтриаминофосфонийгалогенидов
JPS54137358A (en) Method of cutting glass
MY8500013A (en) Method of preparing photocromic glass
JPS53100254A (en) Production method of light
SU622788A1 (ru) Способ изготовлени легкого заполнител
JPS5410316A (en) Method of making optical glass
JPS53130881A (en) Method of producing gassfilled lamp
JPS54142222A (en) Manufacture of light transmission glass
JPS5377539A (en) Method of pasting optical glass
JPS53134016A (en) Method of growing lamination of particulate glass

Legal Events

Date Code Title Description
HU90 Patent valid on 900628
HMM4 Cancellation of final prot. due to non-payment of fee