EP0098858B1 - Conducteur d'alimentation en courant, principalement pour appareils a vide, et son procede de fabrication - Google Patents

Conducteur d'alimentation en courant, principalement pour appareils a vide, et son procede de fabrication Download PDF

Info

Publication number
EP0098858B1
EP0098858B1 EP83900433A EP83900433A EP0098858B1 EP 0098858 B1 EP0098858 B1 EP 0098858B1 EP 83900433 A EP83900433 A EP 83900433A EP 83900433 A EP83900433 A EP 83900433A EP 0098858 B1 EP0098858 B1 EP 0098858B1
Authority
EP
European Patent Office
Prior art keywords
power supply
supply conductor
rhenium
molybdenum
line
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
Application number
EP83900433A
Other languages
German (de)
English (en)
Other versions
EP0098858A1 (fr
EP0098858A4 (fr
Inventor
János NAGY
László NAGY
Endre Oldal
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.)
Tungsram Rt
Original Assignee
Tungsram Rt
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 Tungsram Rt filed Critical Tungsram Rt
Publication of EP0098858A1 publication Critical patent/EP0098858A1/fr
Publication of EP0098858A4 publication Critical patent/EP0098858A4/fr
Application granted granted Critical
Publication of EP0098858B1 publication Critical patent/EP0098858B1/fr
Expired 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
    • H01J61/366—Seals for leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors
    • 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
    • H01J9/32—Sealing leading-in conductors
    • 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.]
    • Y10T428/12528—Semiconductor component
    • 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
    • Y10T428/12597—Noncrystalline silica or noncrystalline plural-oxide component [e.g., glass, etc.]
    • 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.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12812—Diverse refractory group metal-base components: alternative to or next to each other
    • 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.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component

Definitions

  • the invention relates to a power entry line according to the preamble of claim 1 and a method for its production according to the preamble of claim 4.
  • the power entry line penetrating through the glass-like material is generally connected to a component made of any metal and this connection should have good electrical and mechanical properties.
  • a welding connection and in particular resistance welding is used most frequently for electrical light sources. Good weldability is therefore required.
  • Another requirement is that the Stromein enclosuresieitung with the glass-like material forms a hermetic seal.
  • Power supply lines made of molybdenum are often used in vacuum technology devices. The electrical current is fed, for example, to the burners of the high-pressure discharge lamps or the bulbs of the halogen incandescent lamps made of quartz glass through thin foils made of molybdenum.
  • molybdenum wires are also frequently used in the case of light sources with pistons made of tempered glass or of electron tubes.
  • hard-to-weld molybdenum is provided with a transition metal in a known manner or during welding, a separate coating metal element, for. B. a plate or a wire, the material of the coating metal is chosen such that the connection produced is of appropriate strength and toughness and these properties can be maintained even at higher operating temperatures of the devices.
  • a separate coating metal element for. B. a plate or a wire
  • the material of the coating metal is chosen such that the connection produced is of appropriate strength and toughness and these properties can be maintained even at higher operating temperatures of the devices.
  • these requirements such as, for example, with incandescent halogen lamps or metal halogen lamps
  • DE-A-3 104 043 also describes a method according to which the coating of the molybdenum foils is produced in the form of a metal layer by vacuum evaporation or atomization.
  • This application mentions platinum, tantalum, gold and rhenium as metals in which the process can in principle be used.
  • the thickness of the layer can take values from 20 to 10,000 nm.
  • the glass material can be hermetically sealed. Considering that the coating metal can only be profitable in a continuous process, this coating will be present in a continuous layer along the length of the power lead. The coating is therefore only reliable for carrying out a hermetically sealed connection if the glass-like material, in the molten or plastic state, is capable of wetting the coating material.
  • the noble metals such as B. platinum and gold, do not meet this requirement, and according to the experience of the applicant, it often happens with current conductors that are coated with a noble metal that the connection is not vacuum-tight or the device is vacuum-tight during storage or operation loses.
  • the object of the invention is to propose a metal coating which simultaneously ensures a particularly good weldability and ensures a hermetic seal with the glass-like material, moreover the treatment in hydrogen (in the editorial medium) is well tolerated and can be applied by a process which is as simple and quick as possible .
  • the invention is directed to a current introduction line, in particular for vacuum-technical apparatus, for example electrical light sources, the current introduction line serving to conduct the electrical current through a glass-like material and forming a hermetic seal with the glass-like material and furthermore the current introduction line consisting of molybdenum and at least on which the glass-like material comes into contact with the surface is provided with a metallic coating, which according to the invention consists of a rhenium layer.
  • the thickness of the rhenium layer is not a critical factor with regard to the solution of the task and that a rhenium layer of extremely small thickness (order of magnitude nm,) surprisingly considerably facilitates the weldability.
  • Electrolytic deposition is definitely inexpensive, i. H. compared with z. B. vacuum evaporation is a working method of low investment and relatively little loss of material.
  • the thickness of the rhenium layer is not a critical factor (although this can be controlled well by electrodeposition).
  • the molybdenum base metal has a foil shape and only the side to be welded has to be coated with rhenium
  • the side of the surface of the molybdenum base metal immersed in the electrolyte which lies opposite the area to be welded and should not be coated with rhenium is made out of one Support made or insulated with insulating material, expediently guided on a roller surface.
  • the covering of the molybdenum foil used for the quartz incandescent bodies of mercury lamps as the carrier metal of the power lead is described with a rhenium layer.
  • the film is 8.5 mm wide and 25 J lm thick and its edges - in a manner known per se - were thinned like knife edges by electrolytic etching.
  • This film then passes through a metal roller and then the lower lateral surface of a rotary roller with a diameter of 100 mm, which is made of insulating material or covered with insulating material, such as rubber.
  • the roller dips about 35 mm deep in the electrolyte and contains 10 g of KRe0 4 and 4 g of concentrated H 2 S0 4 dissolved in 1 liter of water.
  • the counter electrode is made of platinum and is connected to the positive terminal of the power source.
  • the negative terminal of the power source is connected to the metal roller that passed the film before immersing it in the electrolyte.
  • the speed of the forward transport of the film is selected so that the duration of the relevant point of the film in the electrolyte is about 30 seconds.
  • the electrolytic deposition should be carried out at room temperature, with a current density of about 800 A / m 2 .
  • the film emerging from the electrolysis bath passes through a washing system Water countercurrent, then a dryer with an air flow and a continuous furnace flushed with hydrogen at a temperature of 1100 ° C.
  • rhenium By means of the described arrangement it is achieved that only one side of the film is coated with rhenium. However, this is completely sufficient since, in the present application, the welding takes place only on one side of the film. Should the two sides or the wire be covered, this could easily be solved with the methods known per se.
  • the conditions for electrolytic deposition can be changed
  • baths with a composition that differs from the known can also be used.
  • the advantages of the current introduction line according to the invention consist in the fact that it can be welded particularly well, at the same time ensures the hermetic connection with the glass material, the heat treatment in the deoxidation medium, such as, for. B. well endured in hydrogen and besides these advantages can still be produced by a relatively inexpensive and simple process.

Claims (6)

1. Ligne d'entrée de courant, notamment pour appareils utilisant la technique du vide, comme par exemple des sources de lumière électrique, cette ligne d'entrée de courant servant au passage du courant électrique à travers un matériau vitreux et constituant avec ce matériau vitreux une fermeture hermétique, cette ligne d'entrée de courant étant par ailleurs constituée de molybdène et étant munie, au moins sur la surface qui vient au contact du matériau vitreux, d'un revêtement métallique, caractérisée en ce que ce revêtement métallique est constitué d'une couche de rhénium.
2. Ligne d'entrée de courant selon la revendication 1, caractérisée en ce que la couche de rhénium présente une épaisseur comprise 3 et 1000 nm.
3. Ligne d'entrée de courant selon la revendication 1, caractérisée en ce que la couche de rhénium présente une épaisseur comprise entre 10 et 100 nm.
4. Procédé de réalisation d'une ligne d'entrée de courant constituée de molybdène et munie d'un revêtement métallique, selon l'une des revendications 1 à 3, caractérisé en ce que le revêtement constitué de rhénium est appliqué sur le molybdène par dépôt électrolytique.
5. Procédé selon la revendication 4, caractérisé en ce que le dépôt électrolytique est effectué a partir d'un électrolyte en solution aqueuse.
6. Procédé selon la revendication 4 ou 5, caractérisé en ce que la ligne d'entrée de courant est constituée d'une pellicule et en ce que cette pellicule est guidée sur un support formé d'un isolant ou recouvert d'un isolant, notamment sur la surface d'un cylindre, de façon qu'une face de cette pellicule soit revetue de rhénium par immersion dans l'électrolyte.
EP83900433A 1982-01-28 1983-01-27 Conducteur d'alimentation en courant, principalement pour appareils a vide, et son procede de fabrication Expired EP0098858B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU25482 1982-01-28
HU82254A HU185198B (en) 1982-01-28 1982-01-28 Current inlet particularly for vacuumtechnical devices

Publications (3)

Publication Number Publication Date
EP0098858A1 EP0098858A1 (fr) 1984-01-25
EP0098858A4 EP0098858A4 (fr) 1984-07-03
EP0098858B1 true EP0098858B1 (fr) 1988-05-18

Family

ID=10948752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83900433A Expired EP0098858B1 (fr) 1982-01-28 1983-01-27 Conducteur d'alimentation en courant, principalement pour appareils a vide, et son procede de fabrication

Country Status (7)

Country Link
US (1) US4559278A (fr)
EP (1) EP0098858B1 (fr)
JP (1) JPS59500070A (fr)
AT (1) AT379711B (fr)
DE (1) DE3376709D1 (fr)
HU (1) HU185198B (fr)
WO (1) WO1983002684A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691673A2 (fr) 1994-07-05 1996-01-10 PLANSEE Aktiengesellschaft Conducteur électrique dans des lampes

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0410511A1 (fr) * 1989-07-24 1991-01-30 Koninklijke Philips Electronics N.V. Lampe électrique
JP3480364B2 (ja) * 1999-04-23 2003-12-15 ウシオ電機株式会社 ショートアーク型放電ランプ
US6815888B2 (en) 2001-02-14 2004-11-09 Advanced Lighting Technologies, Inc. Halogen lamps, fill material and methods of dosing halogen lamps
DE10218412A1 (de) * 2002-04-24 2003-11-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Einschmelzfolie und zugehörige Lampe mit dieser Folie
EP2086002A3 (fr) 2004-09-30 2009-10-28 Koninklijke Philips Electronics N.V. Lampe électrique avec feuille de scellage

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE615689C (de) * 1928-07-10 1935-07-09 Wilhelm Koosmann Dr Gluehdraht fuer elektrische Gluehlampen, Elektronenroehren, Roentgenroehren und andere elektrische Vakuumapparate
DE537936C (de) * 1930-07-09 1931-11-09 Patra Patent Treuhand Verfahren zur Herstellung von Rheniumueberzuegen auf aus schwer schmelzbarem Metall bestehenden Draehten oder anderen Metallformkoerpern
GB477462A (en) * 1936-06-30 1937-12-30 Gen Electric Co Ltd Improvements in or relating to metallic electric conductors sealed through quartz
US2859562A (en) * 1954-10-15 1958-11-11 Philips Corp Metal glass seals and methods of making same
BE663373A (fr) * 1964-05-04
GB1064058A (en) * 1964-10-22 1967-04-05 United Aircraft Corp Improvements in and relating to high-temperature bonding alloys
FR2047060B1 (fr) * 1969-06-23 1973-01-12 Egyesuelt Izzolampa
GB1352319A (en) * 1970-03-20 1974-05-08 Johnson Matthey Co Ltd Cladding of metals
JPS4818055U (fr) * 1971-07-09 1973-03-01
GB1415957A (en) * 1973-06-01 1975-12-03 Gen Electric Co Ltd Low pressure mercury vapour fluorescent electric discharge almps
NL174682C (nl) * 1974-11-14 1985-01-16 Philips Nv Elektrische ontladingslamp.
NL174103C (nl) * 1975-09-29 1984-04-16 Philips Nv Elektrische ontladingslamp.
SU702427A1 (ru) * 1978-08-01 1979-12-05 Институт Металлургии Им. А.А.Байкова Ан Ссср Электродный узел электровакуумного прибора
US4277716A (en) * 1979-10-09 1981-07-07 Banks Jr Neill K Glass-to-metal seal construction
HU179895B (en) * 1980-09-09 1982-12-28 Egyesuelt Izzolampa Method for welding current inlets of molyadenum foil used light source industry and electrodes by the application of contacting materials applied by means of vacuum evaporation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691673A2 (fr) 1994-07-05 1996-01-10 PLANSEE Aktiengesellschaft Conducteur électrique dans des lampes
US5606141A (en) * 1994-07-05 1997-02-25 Schwarzkopf Technologies Corporation Electrical conductor in lamps

Also Published As

Publication number Publication date
WO1983002684A1 (fr) 1983-08-04
ATA7883A (de) 1985-06-15
EP0098858A1 (fr) 1984-01-25
US4559278A (en) 1985-12-17
AT379711B (de) 1986-02-25
EP0098858A4 (fr) 1984-07-03
JPS59500070A (ja) 1984-01-12
DE3376709D1 (en) 1988-06-23
HU185198B (en) 1984-12-28

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