DE686047C - Process for the vacuum-tight melting of metal foils serving as current conductors - Google Patents
Process for the vacuum-tight melting of metal foils serving as current conductorsInfo
- Publication number
- DE686047C DE686047C DEP75433D DEP0075433D DE686047C DE 686047 C DE686047 C DE 686047C DE P75433 D DEP75433 D DE P75433D DE P0075433 D DEP0075433 D DE P0075433D DE 686047 C DE686047 C DE 686047C
- Authority
- DE
- Germany
- Prior art keywords
- vacuum
- melting
- current conductors
- metal foils
- tight
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/04—Joining glass to metal by means of an interlayer
- C03C27/042—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts
- C03C27/046—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts of metals, metal oxides or metal salts only
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- 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
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/923—Physical dimension
- Y10S428/924—Composite
- Y10S428/926—Thickness of individual layer specified
-
- 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
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9335—Product by special process
- Y10S428/934—Electrical process
- Y10S428/935—Electroplating
-
- 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
- Y10T428/12826—Group VIB metal-base 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.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12875—Platinum group metal-base 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
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
-
- 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
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
Description
Verfahren zum vakuumdichten Einschmelzen von als Stromleiter dienenden Metallfolien Die Erfindung betrifft ein Verfahren zum vakuumdichten Einschmelzen :elektrischer Stromleiter in hochschmelzende Gläser, insbesondere in aus Quarzglas bestehende Hochdrucklampen, bei dem als Stromleiter in bekannter Weise eine Folie aus Molybdän oder Wolfram verwendet wird, deren Dicke nur höchstens etwa 2o #t beträgt, vorzugsweise aber- nur eine Dicke von i o bis 15 #z aufweist. Solche Metallfolien haben sich besonders als Stromeinführungsleiter für die aus Quarzglas bestehenden Hochdruckmetalldampflampen bewährt, die Dampfdrücke bis zu i oo Atm. und darüber erreichen können.Method for vacuum-tight melting of metal foils serving as current conductors is at most about 20 #t, but preferably only has a thickness of 10 to 15 #z. Such metal foils have proven themselves particularly as current introduction conductors for the high-pressure metal vapor lamps made of quartz glass, the vapor pressures of up to 100 atmospheres. and can achieve it.
Es ist bekannt, daß beim Einschmelzen dieser bei höheren Temperaturen leicht oxydierenden Molybdän- und Wolframfolien mit Sorgfalt darauf geachtet werden muß, daß die mit der Folie in Verbindung stehende Atmosphäre frei von oxydierenden Gasen ist. Man hat daher bisher das Einschmelzen entweder unter Vakuum oder in Gegenwart von reduzierenden oder indifferenten Gasen vorgenommen.It is known that when these are melted down at higher temperatures easily oxidizing molybdenum and tungsten foils are carefully observed it must be that the atmosphere in contact with the film is free of oxidizing agents Gases is. So far, one has therefore melted down either under vacuum or in the presence made of reducing or inert gases.
Diese Vorsichtsmaßregel, die eine beträchtliche Erschwerung des Einschmelzvorgangs darstellt, ist nicht erforderlich, wenn erfindungsgemäß zuerst auf die Molybdän- oder Wolframfolie ein äußerst dünner, nur eine Dicke von etwa i #L und weniger aufweisender Überzug .aus einem schwer schmelzbaren, nicht oxydierenden Metall, insbesondere Rhodium, aufgebracht und wenn das darauffolgende Einbetten in das bis zum Erweichen erhitzte hochschmelzende Glas in atmosphärischer Luft vorgenommen wird. Es hat sich überraschenderweise ;gezeigt, daß ein solcher äußerst feiner Überzug, der also eine wesentlich geringere Dicke aufweist !als die Metallfolie selbst, tatsächlich ausreicht, um mit Sicherheit eine Oxydation der Metallfolie zu verhindern, so daß diese nunmehr gefahrlos in atmosphärischer Luft eingeschmolzen werden. kann.This precaution made the meltdown process considerably more difficult represents, is not necessary if according to the invention first on the molybdenum or tungsten foil is extremely thin, only about i #L thick and less Coating .from a hard-to-melt, non-oxidizing metal, in particular Rhodium, applied and if the subsequent embedding in the until softening heated refractory glass is made in atmospheric air. It has Surprisingly; it was shown that such an extremely fine coating, the one much lower Thickness! Than the metal foil itself, actually sufficient to definitely prevent oxidation of the metal foil, so that these can now be melted down safely in atmospheric air. can.
Der äußerst feine Schutzüberzug über c Metallfolie--wird durch an sich bekannte Verfahren, wie beispielsweise Aufdampfen, Kathodenzerstäubung oder durch Elektrolyse, @erzeugt. Beim Einschmelzen der Folie kann der bis zum Erweichen .erhitzte und sich um die Folie legende hochschmelzende Glaskörper gegebenenfalls noch zusätzlich an die Folie angequetscht werden.The extremely fine protective coating over c metal foil - is through an known methods, such as vapor deposition, cathode sputtering or by electrolysis, @generated. When the film is melted, it can soften .heated high-melting glass bodies placed around the film, if necessary can also be squeezed onto the film.
Man hat zwar bereits Stromeinführungsleiter mit- Metall überzogen. Dort handelt es sich jedoch um Drähte, die ill gewöhnliche Gläser eingeschmolzen werden sollen und ferner um wesentlich dickere Metallüberzüge, da diese dazu dienen, einen geeigneten Gesamtausdehnungskoeffizienten des mit Metall ummantelten Drahtes zu erzielen.It is true that current lead-in conductors have already been covered with metal. There, however, it is a matter of wires that have melted down ordinary glasses and also to have much thicker metal coatings, as these are used to a suitable total expansion coefficient of the metal-sheathed wire to achieve.
Die bekannte Maßnahme, die Oxydation von Einschmelzdrähten durch eine Schutzschicht .aus Borax oder ähnlichen Stoffen zu verhindern, ist völlig unbrauchbar, wenn es sich um hochschmelzende Gläser handelt.The well-known measure, the oxidation of fuse wires by a Protective layer of borax or similar substances to prevent is completely useless, when it comes to high-melting glasses.
Rhödiumüberzüge sind an sich bekannt, ,ivur-den aber bisher nur zu :ganz anderen 1e@ benutzt, z. B. Silbergegenstände oder `Refie'k' n gegen Korrosion zu schützen.Rhodium coatings are known per se, but have only been used so far : completely different 1e @ used, e.g. B. Silver objects or `Refie'k 'n against corrosion to protect.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB18174/36A GB477462A (en) | 1936-06-30 | 1936-06-30 | Improvements in or relating to metallic electric conductors sealed through quartz |
Publications (1)
Publication Number | Publication Date |
---|---|
DE686047C true DE686047C (en) | 1940-01-02 |
Family
ID=10107910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP75433D Expired DE686047C (en) | 1936-06-30 | 1937-06-24 | Process for the vacuum-tight melting of metal foils serving as current conductors |
Country Status (3)
Country | Link |
---|---|
US (1) | US2113984A (en) |
DE (1) | DE686047C (en) |
GB (1) | GB477462A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1018547B (en) * | 1954-01-05 | 1957-10-31 | British Thomson Houston Co Ltd | Electric high pressure mercury vapor discharge lamp |
DE1179297B (en) * | 1959-09-23 | 1964-10-08 | Philips Nv | Electric lamp |
DE1261288B (en) * | 1960-03-31 | 1968-02-15 | Siemens Ag | Vacuum-tight insulating sintered body |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2760310A (en) * | 1951-01-13 | 1956-08-28 | Gen Electric | Quartz-to-metal seal |
NL131701C (en) * | 1961-01-10 | |||
NL6918746A (en) * | 1969-12-13 | 1971-06-15 | ||
HU185198B (en) * | 1982-01-28 | 1984-12-28 | Egyesuelt Izzolampa | Current inlet particularly for vacuumtechnical devices |
JP3394645B2 (en) * | 1996-03-12 | 2003-04-07 | 株式会社小糸製作所 | Arc tube and manufacturing method thereof |
US20060232211A1 (en) * | 2003-05-01 | 2006-10-19 | Koninklijke Philips Electronics N.V. | Method of manufacturing a lamp |
-
1936
- 1936-06-30 GB GB18174/36A patent/GB477462A/en not_active Expired
-
1937
- 1937-06-24 DE DEP75433D patent/DE686047C/en not_active Expired
- 1937-09-28 US US166226A patent/US2113984A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1018547B (en) * | 1954-01-05 | 1957-10-31 | British Thomson Houston Co Ltd | Electric high pressure mercury vapor discharge lamp |
DE1179297B (en) * | 1959-09-23 | 1964-10-08 | Philips Nv | Electric lamp |
DE1261288B (en) * | 1960-03-31 | 1968-02-15 | Siemens Ag | Vacuum-tight insulating sintered body |
Also Published As
Publication number | Publication date |
---|---|
US2113984A (en) | 1938-04-12 |
GB477462A (en) | 1937-12-30 |
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