EP0098858A1 - Power supply conductor, essentially for vacuum apparatus, and manufacturing method thereof. - Google Patents
Power supply conductor, essentially for vacuum apparatus, and manufacturing method thereof.Info
- Publication number
- EP0098858A1 EP0098858A1 EP83900433A EP83900433A EP0098858A1 EP 0098858 A1 EP0098858 A1 EP 0098858A1 EP 83900433 A EP83900433 A EP 83900433A EP 83900433 A EP83900433 A EP 83900433A EP 0098858 A1 EP0098858 A1 EP 0098858A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- supply conductor
- rhenium
- molybdenum
- current supply
- layer
- 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.)
- Granted
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 current introduction line, in particular for vacuum technology devices, for example for electrical light sources, which
- Power introduction line is used to carry the electrical current through glassy material, furthermore ensures a hermetic seal with the glassy material, the base metal of the current introduction line being molybdenum, its entire surface, or that part of this surface which contains the area to be welded, with an intermediate metal coating
- the invention further relates to a method for producing the proposed Stromein introduction line.
- the power lead through the glassy material is generally connected to a component made of any metal and this connection should have good electrical and mechanical properties.
- the welding connection and in particular the resistance welding is used most frequently for electrical light sources. Good weldability is therefore a requirement.
- Another requirement is that the power entry line with the glassy material ensures a hermetic seal. Vacuum devices are very common
- the electric current is used, for example, for the high-pressure discharge lamp burners or the quartz glass Manufactured bulbs of halogen bulbs fed through thin foils of molybdenum.
- Molybdenum wires are also often used in the case of light sources with bulbs made of tempered glass or of electron tubes.
- the difficult-to-weld molybdenum is provided with an intermediate metal coating, or when welding, a separate intermediate metal element, e.g. B. plate or wire, the material of the intermediate metal is selected such that the bond produced is of appropriate strength and toughness and these properties are retained even at the higher operating temperatures of the devices.
- the separation intermediate metal means, of course, that an additional element should be added and arranged in position during the welding process, which makes the process understandably more complicated.
- the molybdenum, as base metal - at least on the surface to be welded - with an intermediate in advance metal coating is provided.
- the previous coating of molybdenum foils can be carried out in such a way that a coating consisting of circuit board alloy is applied to the foil and this is decomposed by heat treatment.
- the FRG published patent application DE-OS 3104 043 describes a method according to which the coating of the molybdenum foils is produced in the form of an intermediate metal layer by vacuum evaporation or atomization.
- This application mentions platinum, tantalum, gold and rhenium as such metal, in which the process can in principle be used.
- the thickness of the layer is given between the values of 20 and 10000 nm. Another indication of the use of rhenium as an intermediate metal - both separately and in the form of a coating - is unknown.
- the most important requirement against the intermediate metal is - moreover, that it should make the welding process easier - that the glass material can be hermetically sealed. Considering that the deposition of the intermediate metal can only be profitable in a continuous process, this coating will be present in an uninterrupted layer along the length of the power lead.
- the cover is therefore only reliable for executing a hermetically sealed bond if the glassy material, in the molten or plastic state, is capable of moistening the material of the cover.
- the noble metals such as the platinum and the gold, do not meet this requirement and, according to the experience of the applicant, occurs when the intermediate metal is coated with noble metal Current conductors often ensure that the binding is not vacuum-tight or that the device loses vacuum tightness during storage or commissioning.
- the object of the invention is to develop a coating formed as an intermediate metal, which ensures the particularly good weldability and at the same time with the glass-like
- the invention is based on the knowledge that the use of the rhenium layer as a coating of the molybdenum base metal has significant advantages over the other intermediate metal materials used hitherto and have not hitherto been recognized, advantages which enable the object to be achieved.
- the invention is a current introduction line, in particular for vacuum-technical apparatus, such as for electrical light sources, which current introduction line serves to carry the current through glassy medium, furthermore ensures a hermetic seal with the glassy material, and the base metal of the current introduction line is molybdenum, the entire surface of which, or the portion of its surface which contains the area to be welded is coated by an intermediate metal layer, the intermediate metal layer being designed as a rhenium layer.
- the thickness of the rhenium layer is not a critical factor in achieving the goal and is one
- the thickness of the rhenium layer is not a critical factor (although it can be controlled with electrodeposition). If the molybdenum base metal is of sheet form and it becomes necessary to coat only the side to be welded with rhenium, the side of the surface of the base material immersed in the electrolyte becomes opposite the side which contains the area to be welded is not coated with rhenium, via supports made of insulating material or covered with insulating material, expediently sent through the cylinder surface.
- the covering of the molybdenum foil used for the quartz incandescent lamps of the mercury lamps as the base metal of the power lead is described with a rhenium layer.
- the film is 8.5 mm wide and 25 ⁇ m thick; their edges were - in a way known to themselves - by electrolytic
- the knife-like cut reduces the thickness.
- the film emerging from the thickness reduction system passes through a metal roller, then the lower lateral surface of a made of insulating material, or with insulating material, such as a rubber-coated rotary roller with a diameter of 100 mm.
- the roller dips about 35 mm deep into the electrolyte, which contains 10 g KReO 4 and 4 g concentrated H 2 SO 4 dissolved in 1 liter water.
- the counter electrode is made of platinum, to which the positive terminal of the power source is connected, the negative one to the metal roller, which passed the foil before being immersed in the electrolyte.
- the speed of the forward transport of the film is chosen so that the length
- Electrolyte is about 30 seconds. The electrolytic reaction
Abstract
Conducteur d'alimentation en courant, principalement pour appareils à vide, comme par exemple des sources électriques de lumière, et qui sert à transmettre du courant à travers un matériau vitreux, tout en assurant un raccord hermétique avec ce matériau vitreux. Le métal de base du conducteur d'alimentation en courant est le molybdène, recouvert d'une couche intermédiaire métallique sur toute sa surface ou sur la partie de la surface destinée à être soudée. La couche intermédiaire métallique du conducteur d'alimentation en courant est composée de rhénium avec une épaisseur appropriée allant de 3 à 1000 nm, de préférence de 10 à 100 nm. Comme procédé de fabrication approprié du conducteur d'alimentation en courant, l'on propose la précipitation électrolytique. Les avantages du conducteur d'alimentation en courant proposé sont les suivants: il se laisse facilement souder et assure en même temps un raccord hermétique avec le matériau vitreux, il supporte bien le traitement thermique dans un agent de réduction, comme l'hydrogène et peut en outre être fabriqué selon un procédé relativement simple et peu coûteux.Current supply conductor, mainly for vacuum devices, such as for example electric light sources, and which serves to transmit current through a glassy material, while ensuring a hermetic connection with this glassy material. The base metal of the current supply conductor is molybdenum, covered with a metallic intermediate layer over its entire surface or over the part of the surface intended to be welded. The metallic intermediate layer of the current supply conductor is composed of rhenium with an appropriate thickness ranging from 3 to 1000 nm, preferably from 10 to 100 nm. As a suitable method of manufacturing the current supply conductor, electrolytic precipitation is proposed. The advantages of the proposed current supply conductor are as follows: it is easy to weld and at the same time ensures a hermetic connection with the vitreous material, it withstands heat treatment well in a reducing agent, such as hydrogen and can furthermore be manufactured by a relatively simple and inexpensive process.
Description
Claims
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 true EP0098858A1 (en) | 1984-01-25 |
EP0098858A4 EP0098858A4 (en) | 1984-07-03 |
EP0098858B1 EP0098858B1 (en) | 1988-05-18 |
Family
ID=10948752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83900433A Expired EP0098858B1 (en) | 1982-01-28 | 1983-01-27 | Power supply conductor, essentially for vacuum apparatus, and manufacturing method thereof |
Country Status (7)
Country | Link |
---|---|
US (1) | US4559278A (en) |
EP (1) | EP0098858B1 (en) |
JP (1) | JPS59500070A (en) |
AT (1) | AT379711B (en) |
DE (1) | DE3376709D1 (en) |
HU (1) | HU185198B (en) |
WO (1) | WO1983002684A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0410511A1 (en) * | 1989-07-24 | 1991-01-30 | Koninklijke Philips Electronics N.V. | Electric lamp |
AT401124B (en) * | 1994-07-05 | 1996-06-25 | Plansee Ag | ELECTRIC LADDER IN LAMPS |
JP3480364B2 (en) * | 1999-04-23 | 2003-12-15 | ウシオ電機株式会社 | Short arc discharge lamp |
US6815888B2 (en) | 2001-02-14 | 2004-11-09 | Advanced Lighting Technologies, Inc. | Halogen lamps, fill material and methods of dosing halogen lamps |
DE10218412A1 (en) * | 2002-04-24 | 2003-11-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Melting film and associated lamp with this film |
EP2086002A3 (en) | 2004-09-30 | 2009-10-28 | Koninklijke Philips Electronics N.V. | Electric lamp with sealing foil |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4011480A (en) * | 1974-11-14 | 1977-03-08 | U.S. Philips Corporation | Electric discharge lamp |
DE3104043A1 (en) * | 1980-09-09 | 1982-05-27 | Egyesült Izzólámpa és Villamossági Részvénytársaság, 1340 Budapest | Process for soldering or welding components produced from not readily joinable metals, in particular for the welding of molybdenum foil current leads and tungsten electrodes employed in the light-source industry |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE615689C (en) * | 1928-07-10 | 1935-07-09 | Wilhelm Koosmann Dr | Glow wire for electric light bulbs, electron tubes, X-ray tubes and other electrical vacuum devices |
DE537936C (en) * | 1930-07-09 | 1931-11-09 | Patra Patent Treuhand | Process for the production of rhenium coatings on wires made of difficult-to-melt metal or other shaped metal bodies |
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 (en) * | 1964-05-04 | |||
GB1064058A (en) * | 1964-10-22 | 1967-04-05 | United Aircraft Corp | Improvements in and relating to high-temperature bonding alloys |
FR2047060B1 (en) * | 1969-06-23 | 1973-01-12 | Egyesuelt Izzolampa | |
GB1352319A (en) * | 1970-03-20 | 1974-05-08 | Johnson Matthey Co Ltd | Cladding of metals |
JPS4818055U (en) * | 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 |
NL174103C (en) * | 1975-09-29 | 1984-04-16 | Philips Nv | ELECTRIC DISCHARGE LAMP. |
SU702427A1 (en) * | 1978-08-01 | 1979-12-05 | Институт Металлургии Им. А.А.Байкова Ан Ссср | Electrode assembly of an electrical vacuum device |
US4277716A (en) * | 1979-10-09 | 1981-07-07 | Banks Jr Neill K | Glass-to-metal seal construction |
-
1982
- 1982-01-28 HU HU82254A patent/HU185198B/en unknown
-
1983
- 1983-01-11 AT AT0007883A patent/AT379711B/en not_active IP Right Cessation
- 1983-01-27 US US06/541,337 patent/US4559278A/en not_active Expired - Fee Related
- 1983-01-27 JP JP83500482A patent/JPS59500070A/en active Pending
- 1983-01-27 WO PCT/HU1983/000002 patent/WO1983002684A1/en active IP Right Grant
- 1983-01-27 DE DE8383900433T patent/DE3376709D1/en not_active Expired
- 1983-01-27 EP EP83900433A patent/EP0098858B1/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4011480A (en) * | 1974-11-14 | 1977-03-08 | U.S. Philips Corporation | Electric discharge lamp |
DE3104043A1 (en) * | 1980-09-09 | 1982-05-27 | Egyesült Izzólámpa és Villamossági Részvénytársaság, 1340 Budapest | Process for soldering or welding components produced from not readily joinable metals, in particular for the welding of molybdenum foil current leads and tungsten electrodes employed in the light-source industry |
Non-Patent Citations (1)
Title |
---|
See also references of WO8302684A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1983002684A1 (en) | 1983-08-04 |
ATA7883A (en) | 1985-06-15 |
US4559278A (en) | 1985-12-17 |
EP0098858B1 (en) | 1988-05-18 |
AT379711B (en) | 1986-02-25 |
EP0098858A4 (en) | 1984-07-03 |
JPS59500070A (en) | 1984-01-12 |
DE3376709D1 (en) | 1988-06-23 |
HU185198B (en) | 1984-12-28 |
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