BE899541A - Lampe a decharge. - Google Patents

Lampe a decharge.

Info

Publication number
BE899541A
BE899541A BE0/212850A BE212850A BE899541A BE 899541 A BE899541 A BE 899541A BE 0/212850 A BE0/212850 A BE 0/212850A BE 212850 A BE212850 A BE 212850A BE 899541 A BE899541 A BE 899541A
Authority
BE
Belgium
Prior art keywords
mgo
ppm
weight
discharge lamp
sio2
Prior art date
Application number
BE0/212850A
Other languages
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of BE899541A publication Critical patent/BE899541A/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
    • H01J9/247—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps specially adapted for gas-discharge lamps
    • 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
    • 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
    • C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

Lampe à décharge à haute pression munie d'une enceinte à décharge (3), dont la paroi (3a) est en matériau céramique perméable à la lumière qui est essentiellement constitué par du grenat d'aluminium-yttrium polycrystallin fritté dense. Conformément à l'invention, le matériau de la paroi (3a) contient au moins l'une des substances MgO et SiO2 dans une quantité totale d'au moins 50 ppm. en poids, la valeur absolue de la différence en ppm. en poids de SiO2 et de MgO étant d'au moins 50 et un excès en MgO d'au maximum 1000 ppm. en poids. Le matériau peut etre fritté sans pression externe.
BE0/212850A 1983-04-29 1984-04-27 Lampe a decharge. BE899541A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8301514 1983-04-29

Publications (1)

Publication Number Publication Date
BE899541A true BE899541A (fr) 1984-10-29

Family

ID=19841780

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/212850A BE899541A (fr) 1983-04-29 1984-04-27 Lampe a decharge.

Country Status (7)

Country Link
US (2) US4841195A (fr)
JP (1) JPS59207555A (fr)
BE (1) BE899541A (fr)
CA (1) CA1222018A (fr)
DE (1) DE3415172A1 (fr)
FR (1) FR2545272B1 (fr)
HU (1) HUT40393A (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4841195A (en) * 1983-04-29 1989-06-20 U.S. Philips Corporation Discharge lamp having a yttrium aluminum garnet discharge envelope
US5217933A (en) * 1991-06-03 1993-06-08 Minnesota Mining And Manufacturing Company Yttria-alumina fibers
US6136736A (en) * 1993-06-01 2000-10-24 General Electric Company Doped silica glass
US5631522A (en) * 1995-05-09 1997-05-20 General Electric Company Low sodium permeability glass
US5780377A (en) * 1993-09-02 1998-07-14 Toto Ltd. Light-transmissive ceramics and method of manufacturing same
JP3222357B2 (ja) * 1994-06-09 2001-10-29 キヤノン株式会社 画像形成装置及びその製造方法
US5682082A (en) * 1996-07-29 1997-10-28 Osram Sylvania Inc. Translucent polycrystalline alumina and method of making same
US6447937B1 (en) 1997-02-26 2002-09-10 Kyocera Corporation Ceramic materials resistant to halogen plasma and components using the same
CA2255983C (fr) * 1997-12-16 2007-10-23 Konoshima Chemical Co., Ltd. Ceramique resistante a la corrosion et methode de production de celle-ci
JP4587350B2 (ja) * 2001-01-19 2010-11-24 信越石英株式会社 透光性セラミックス体の製造方法
JP4605729B2 (ja) * 2001-01-19 2011-01-05 信越石英株式会社 透光性セラミックス体及びその製造方法
US7371704B2 (en) * 2002-12-25 2008-05-13 Ngk Insulators, Ltd. Sintered bodies of yttrium-aluminum garnet, a method of producing the same and sintering aid therefor
JP2007517753A (ja) * 2004-01-05 2007-07-05 ショット アクチエンゲゼルシャフト ガラスセラミックの使用方法
DE102004001176A1 (de) * 2004-01-05 2005-08-04 Schott Ag Verwendungen von Glaskeramiken
DE102004004259B3 (de) * 2004-01-23 2005-11-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Transparente polykristalline Sinterkeramik kubischer Kristallstruktur
FR2868773B1 (fr) * 2004-04-07 2007-04-06 Centre Nat Rech Scient Cnrse Preparation de ceramiques transparentes de yag dope par des lanthanides
US7923740B2 (en) * 2005-03-01 2011-04-12 Kabushiki Kaisha Toshiba Light emission device
US20080106203A1 (en) * 2006-11-06 2008-05-08 Gratson Gregory M Arc Tube for a High Intensity Discharge Lamp
US20080108496A1 (en) * 2006-11-07 2008-05-08 Gratson Gregory M Composition Used to Make a Transparent Ceramic Material and Method of Manufacturing the Same
US7884550B2 (en) * 2006-11-07 2011-02-08 General Electric Company Arc tube composed of yttrium aluminum garnet ceramic material
US20080106010A1 (en) * 2006-11-07 2008-05-08 Gratson Gregory M Transparent Ceramic Material and Method of Manufacturing the Same
US20080170384A1 (en) * 2007-01-11 2008-07-17 Zhu Jing Jim Lamp
FR2927073B1 (fr) 2008-01-31 2010-12-24 Cilas Ceramiques transparentes a base de yag
US8039413B2 (en) * 2008-10-24 2011-10-18 Lawrence Livermore National Security, Llc Transparent ceramics and methods of preparation thereof
DE102008063926A1 (de) 2008-12-18 2010-06-24 Ceramtec-Etec Gmbh Verfahren zur Herstellung einer transparenten Keramik

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4939885B1 (fr) * 1968-08-19 1974-10-29
GB1252851A (fr) * 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
US3767745A (en) * 1972-02-07 1973-10-23 Us Army Hot pressing ceramic oxides to transparency by heating in isothermal increments
JPS5435206B2 (fr) * 1973-07-30 1979-11-01
SU564290A1 (ru) * 1975-12-29 1977-07-05 Предприятие П/Я В-8584 Вакуумноплотна прозрачна керамика
GB1597162A (en) * 1977-03-10 1981-09-03 Ngk Insulators Ltd Transparent polycrystalline alumina and high pressure vapour discharge lamp
US4166831A (en) * 1977-07-11 1979-09-04 Gte Laboratories Incorporated Transparent yttria ceramics and method for producing same
JPS5575967A (en) * 1978-11-28 1980-06-07 Ngk Spark Plug Co Manufacture of alumina sintered body
US4211758A (en) * 1978-12-26 1980-07-08 Gte Laboratories Incorporated Ceramic compositions and articles prepared therefrom
US4174973A (en) * 1979-01-29 1979-11-20 Gte Laboratories Incorporated Transparent yttria ceramics containing magnesia or magnesium aluminate
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
DE3166367D1 (en) * 1980-12-20 1984-10-31 Emi Plc Thorn Method of producing a discharge lamp and discharge lamp produced thereby
US4396595A (en) * 1982-02-08 1983-08-02 North American Philips Electric Corp. Method of enhancing the optical transmissivity of polycrystalline alumina bodies, and article produced by such method
US4841195A (en) * 1983-04-29 1989-06-20 U.S. Philips Corporation Discharge lamp having a yttrium aluminum garnet discharge envelope
EP0134277B2 (fr) * 1983-08-26 1991-11-13 Hoechst CeramTec Aktiengesellschaft Procédé et dispositif de fabrication des tubes frittés polycristallins translucides

Also Published As

Publication number Publication date
DE3415172A1 (de) 1984-10-31
FR2545272A1 (fr) 1984-11-02
FR2545272B1 (fr) 1986-06-20
US4841195A (en) 1989-06-20
JPS59207555A (ja) 1984-11-24
CA1222018A (fr) 1987-05-19
US4923420A (en) 1990-05-08
HUT40393A (en) 1986-12-28

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: N.V. PHILIPS' GLOEILAMPENFABRIEKEN

Effective date: 19910430