EP0691673B1 - Elektrischer Leiter in Lampen - Google Patents

Elektrischer Leiter in Lampen Download PDF

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Publication number
EP0691673B1
EP0691673B1 EP95201756A EP95201756A EP0691673B1 EP 0691673 B1 EP0691673 B1 EP 0691673B1 EP 95201756 A EP95201756 A EP 95201756A EP 95201756 A EP95201756 A EP 95201756A EP 0691673 B1 EP0691673 B1 EP 0691673B1
Authority
EP
European Patent Office
Prior art keywords
lamps
molybdenum
electrical conductor
conductor
oxide
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP95201756A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0691673A3 (de
EP0691673A2 (de
Inventor
Gerhard Dipl.-Ing. Leichtfried
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plansee SE
Original Assignee
Plansee SE
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 Plansee SE filed Critical Plansee SE
Publication of EP0691673A2 publication Critical patent/EP0691673A2/de
Publication of EP0691673A3 publication Critical patent/EP0691673A3/de
Application granted granted Critical
Publication of EP0691673B1 publication Critical patent/EP0691673B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H01J61/366—Seals for leading-in conductors
    • H01J61/368—Pinched seals or analogous seals

Definitions

  • the invention relates to an electrical conductor from etched Tape material based on molybdenum yttrium oxide as Power supply in lamps with metal / glass seal.
  • Lamps include, in particular, halogen lamps and Discharge lamps, such as high-pressure mercury lamps, Metal halide lamps and xenon high-pressure discharge lamps.
  • molybdenum conductor Further material requirements for the molybdenum conductor are Ductility, good ductility, high mechanical strength, Resistance to oxidation and corrosion, especially against halides, and weldability with other conductor components.
  • DE-C-29 47 230 has created an electric lamp with a mechanically firmer lead-through to the task and describes, instead of the previously used Molybdenum foil to use one in which in the molybdenum Yttria particles in an amount of 0.25 to 1% of Molybdenum weight are dispersed.
  • This material shows however, measured against today's requirements, inadequate Corrosion, especially oxidation properties.
  • DE-C-30 06 846 proposes the electrical Conductor for carrying electricity in the form of a molybdenum or Tungsten foil with a second metal from a group case made of tantalum, niobium, vanadium, chrome, zircon, Titanium, yttrium, lanthanum, scandium and hafnium.
  • the Cladding of the molybdenum or tungsten conductor can according to Patent by evaporation, sputtering, electrolysis and other procedures take place.
  • the sheathing represents a complex, cost-intensive process and guarantees at economic implementation not as uniformly thick Application that the desired in all areas Corrosion protection is ensured.
  • US-A 5 021 711 also deals with that Protection against oxidation of molybdenum foils used as electrical Ladder used in vacuum lamps and suggests that Molybdenum foil on the surface with ion implantation Chromium, aluminum or combinations of these metals too refine.
  • the lack of insufficient weldability hits to and this process is complex for this material and expensive. It increases the manufacturing cost of the mass product Quartz lamp to an unsatisfactory extent.
  • EP-B-0 309 749 is concerned with increasing the Oxidation resistance of molybdenum used in electrical Use lamps in the sealing area as electrical conductors should find.
  • EP-B-0 098 858 proposes to increase the Resistance to oxidation, but also weldability and Resistance to hydrogen-containing media before Covering a molybdenum power lead with a To provide rhenium layer.
  • Rhenium is an expensive material.
  • the known methods for producing the coating are expensive, so that the main disadvantage in the lack of economy of such treated electrical conductor lies.
  • a molybdenum alloy for an electrical conductor as a power supply for lamps, consisting of 0.01 to 5% by weight of one or more oxides of lanthanides, the remainder being Mo.
  • this material has excellent weldability and high-temperature strength compared to other known conductor materials, other application-specific material characteristics are less favorable than for individual ones of the previously known Mo alloys.
  • the sum of all material properties recommends use as a wire-shaped power supply for tempered glass melts, but not as a tape or film for quartz glass melts.
  • JP-B-60058296 describes a heat-resistant alloy from 10 to 70% by weight of yttrium oxide and / or cerium oxide, the rest Molybdenum used for thermowell protection tubes becomes. A suitability of this alloy for power supply in Lamps cannot be found in this prior publication.
  • the above-mentioned object is surprisingly achieved by an electrical conductor in the embodiment according to claim 1.
  • Lamps according to the present invention include various types of incandescent halogen lamps as well as discharge lamps such as e.g. B. high-pressure mercury lamps, high-pressure xenon lamps and metal halide lamps.
  • the strip material is used in a wide variety of dimensions in the lamp, but in particular as a thin, elliptically etched foil.
  • the electrical conductors according to the invention can be used without restriction while maintaining the currently customary methods for lamp production, in particular the metal / glass melting or squeezing technique. This also applies in particular to methods according to which the ends of the electrical current conductor according to the present invention are welded to further current-carrying components and, including the welded connections, melted or squeezed into quartz glass.
  • etching agents and etching processes customary today for molybdenum tape material or molybdenum foils are used. This applies in particular to the widespread methods for thinning the lateral edge zones of a conductor strip.
  • the following examples describe advantageous configurations of the electrical conductor according to the invention and its manufacture. The explanations are supplemented by comparative studies on the oxidation resistance of such electrical conductors.
  • molybdenum powder with a finely divided mixture of 0.55% by weight of yttrium-cerium mixed oxide with a ratio of cerium oxide to yttrium oxide of 0.25 was produced by means of liquid doping (oxide particle size ⁇ 0.1 ⁇ m), compacted by die pressing and then sintered at 1850 ° C / 5 h.
  • the rolled blanks produced in this way were processed into strips with a thickness of 0.045 mm by means of hot and cold rolling, then cut and brought into the elliptical shape typical of the melting strip using an electrolytic pickling process and annealed at 800 ° C. under a H 2 atmosphere.
  • a molybdenum tape material according to the invention 0.55% by weight cerium-yttrium mixed oxide with a ratio of Cerium oxide to yttrium oxide of 0.43, was according to the Manufacturing conditions prepared according to Example 1.

Landscapes

  • Glass Compositions (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Conductive Materials (AREA)
EP95201756A 1994-07-05 1995-06-28 Elektrischer Leiter in Lampen Expired - Lifetime EP0691673B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT132394 1994-07-05
AT0132394A AT401124B (de) 1994-07-05 1994-07-05 Elektrischer leiter in lampen
AT1323/94 1994-07-05

Publications (3)

Publication Number Publication Date
EP0691673A2 EP0691673A2 (de) 1996-01-10
EP0691673A3 EP0691673A3 (de) 1997-11-26
EP0691673B1 true EP0691673B1 (de) 2000-03-01

Family

ID=3511417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95201756A Expired - Lifetime EP0691673B1 (de) 1994-07-05 1995-06-28 Elektrischer Leiter in Lampen

Country Status (5)

Country Link
US (1) US5606141A (ja)
EP (1) EP0691673B1 (ja)
JP (1) JP3459318B2 (ja)
AT (1) AT401124B (ja)
DE (1) DE59507870D1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010057239A1 (de) 2008-11-21 2010-05-27 Plansee Metall Gmbh Dichtungsfolie

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5868876A (en) * 1996-05-17 1999-02-09 The United States Of America As Represented By The United States Department Of Energy High-strength, creep-resistant molybdenum alloy and process for producing the same
US5877590A (en) * 1996-07-12 1999-03-02 Koito Manufacturing Co., Ltd. Discharge lamp arc tube and method of producing the same
JPH1167153A (ja) * 1997-08-21 1999-03-09 Koito Mfg Co Ltd メタルハライドランプ
US6102979A (en) * 1998-08-28 2000-08-15 The United States Of America As Represented By The United States Department Of Energy Oxide strengthened molybdenum-rhenium alloy
AT4408U1 (de) 2000-05-18 2001-06-25 Plansee Ag Verfahren zur herstellung einer elektrischen lampe
JP4231380B2 (ja) 2003-10-16 2009-02-25 株式会社アライドマテリアル 電球及びそれに用いられる電流導体
JP4927743B2 (ja) * 2004-09-30 2012-05-09 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ シール薄膜を有する電気ランプ
CN1297485C (zh) * 2004-12-16 2007-01-31 西安交通大学 稀土二钼酸铵制备工艺
CN100370046C (zh) * 2005-04-19 2008-02-20 泰州市万鑫钨钼制品有限公司 钇钼材料及生产方法
CN101180703A (zh) * 2005-05-19 2008-05-14 皇家飞利浦电子股份有限公司 具有钼合金灯器件的灯
AT8564U1 (de) * 2005-06-29 2006-09-15 Plansee Se Halogenglühlampe mit abblendkappe aus mo-legierung
CN100592452C (zh) * 2005-07-29 2010-02-24 松下电器产业株式会社 荧光体悬浮液的制备方法、荧光灯、背光单元、直下方式的背光单元以及液晶显示装置
US7476634B2 (en) * 2005-08-16 2009-01-13 Covalent Materials Corporation Yttria sintered body and manufacturing method therefor
CN100417738C (zh) * 2006-11-10 2008-09-10 金堆城钼业股份有限公司 耐高温、抗电弧侵蚀复合稀土钼合金及其制备方法
CN104392892A (zh) * 2013-11-15 2015-03-04 朱惠冲 一种汽车前照灯内配光屏及其制备材料

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US982751A (en) * 1908-05-01 1911-01-24 Orlando M Thowless Glower for electrical incandescent lamps.
JPS6058296B2 (ja) 1977-06-13 1985-12-19 東芝セラミツクス株式会社 耐熱材料
NL178041C (nl) * 1978-11-29 1986-01-02 Philips Nv Elektrische lamp.
NL183794B (nl) * 1979-02-26 Philips Nv Hogedrukkwikontladingslamp.
HU185198B (en) * 1982-01-28 1984-12-28 Egyesuelt Izzolampa Current inlet particularly for vacuumtechnical devices
SE437257B (sv) * 1983-08-10 1985-02-18 Sca Development Ab Sett att styra en anaerob process for rening av avloppsvatten
US4755712A (en) * 1986-12-09 1988-07-05 North American Philips Corp. Molybdenum base alloy and lead-in wire made therefrom
AT386612B (de) * 1987-01-28 1988-09-26 Plansee Metallwerk Kriechfeste legierung aus hochschmelzendem metall und verfahren zu ihrer herstellung
US4835439A (en) * 1987-09-29 1989-05-30 General Electric Company Increasing the oxidation resistance of molybdenum and its use for lamp seals
AU601294B2 (en) * 1987-10-05 1990-09-06 Boc Group, Inc., The Glass to metal sealing process
US5077505A (en) * 1989-07-24 1991-12-31 U.S. Philips Corporation Electric lamp and seal structure therefor
US5021711A (en) * 1990-10-29 1991-06-04 Gte Products Corporation Quartz lamp envelope with molybdenum foil having oxidation-resistant surface formed by ion implantation
AT395493B (de) * 1991-05-06 1993-01-25 Plansee Metallwerk Stromzufuehrung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010057239A1 (de) 2008-11-21 2010-05-27 Plansee Metall Gmbh Dichtungsfolie

Also Published As

Publication number Publication date
US5606141A (en) 1997-02-25
JPH0855566A (ja) 1996-02-27
DE59507870D1 (de) 2000-04-06
EP0691673A3 (de) 1997-11-26
EP0691673A2 (de) 1996-01-10
AT401124B (de) 1996-06-25
JP3459318B2 (ja) 2003-10-20
ATA132394A (de) 1995-10-15

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