DE813573C - Kathode, deren Emissionseigenschaften durch Thoriumoxyd bedingt werden - Google Patents

Kathode, deren Emissionseigenschaften durch Thoriumoxyd bedingt werden

Info

Publication number
DE813573C
DE813573C DEP54597A DEP0054597A DE813573C DE 813573 C DE813573 C DE 813573C DE P54597 A DEP54597 A DE P54597A DE P0054597 A DEP0054597 A DE P0054597A DE 813573 C DE813573 C DE 813573C
Authority
DE
Germany
Prior art keywords
thorium oxide
cathode
caused
emission properties
whose emission
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
DEP54597A
Other languages
German (de)
English (en)
Inventor
Antonius Josephus Va Genuchten
Robert Loosjes
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE813573C publication Critical patent/DE813573C/de
Expired legal-status Critical Current

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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/073—Main electrodes for high-pressure discharge lamps
    • H01J61/0735—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
    • Y10T428/2958—Metal or metal compound in coating
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/298—Physical dimension

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Discharge Lamp (AREA)
  • Solid Thermionic Cathode (AREA)
DEP54597A 1948-09-14 1949-09-11 Kathode, deren Emissionseigenschaften durch Thoriumoxyd bedingt werden Expired DE813573C (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL278121X 1948-09-14

Publications (1)

Publication Number Publication Date
DE813573C true DE813573C (de) 1951-09-13

Family

ID=19782192

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP54597A Expired DE813573C (de) 1948-09-14 1949-09-11 Kathode, deren Emissionseigenschaften durch Thoriumoxyd bedingt werden

Country Status (7)

Country Link
US (1) US2614942A (enrdf_load_stackoverflow)
BE (1) BE491070A (enrdf_load_stackoverflow)
CH (1) CH278121A (enrdf_load_stackoverflow)
DE (1) DE813573C (enrdf_load_stackoverflow)
FR (1) FR995225A (enrdf_load_stackoverflow)
GB (1) GB666053A (enrdf_load_stackoverflow)
NL (1) NL70864C (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009727B (de) * 1953-01-10 1957-06-06 Deutsche Elektronik Gmbh Verfahren zur Erzeugung fester, guthaftender Emissionsschichten aus Thorium-Oxyd auf einem Traegermetall aus Wolfram oder Molybdaen
DE1063282B (de) * 1954-06-16 1959-08-13 Csf Presskoerper zur Verwendung als emittierender Teil einer Bariumsinterkathode und Verfahren zu seiner Herstellung
DE1080700B (de) * 1958-05-17 1960-04-28 Deutsche Elektronik Gmbh Verfahren zur Herstellung einer indirekt geheizten Kathode, insbesondere fuer Magnetrons hoher Schwingleistung, und nach diesem Verfahren hergestellte Kathode

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2717975A (en) * 1951-03-30 1955-09-13 Wihtol Weltis Cathodes for electron tubes
US2845515A (en) * 1953-03-12 1958-07-29 Raytheon Mfg Co Semimetallic resistive filaments
US2847328A (en) * 1957-03-04 1958-08-12 James E Cline Method of making thorium oxide cathodes
US3558966A (en) * 1967-03-01 1971-01-26 Semicon Associates Inc Directly heated dispenser cathode
US3973155A (en) * 1975-01-31 1976-08-03 Westinghouse Electric Corporation Incandescent source of visible radiations
US4333035A (en) * 1979-05-01 1982-06-01 Woodland International Corporation Areal array of tubular electron sources
US4438557A (en) * 1979-05-01 1984-03-27 Woodland International Corporation Method of using an areal array of tubular electron sources
US20090085463A1 (en) * 2007-09-28 2009-04-02 General Electric Company Thermo-optically functional compositions, systems and methods of making

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2339392A (en) * 1942-10-06 1944-01-18 Rca Corp Cathode
US2477601A (en) * 1947-06-11 1949-08-02 Raytheon Mfg Co Directly heated cathode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009727B (de) * 1953-01-10 1957-06-06 Deutsche Elektronik Gmbh Verfahren zur Erzeugung fester, guthaftender Emissionsschichten aus Thorium-Oxyd auf einem Traegermetall aus Wolfram oder Molybdaen
DE1063282B (de) * 1954-06-16 1959-08-13 Csf Presskoerper zur Verwendung als emittierender Teil einer Bariumsinterkathode und Verfahren zu seiner Herstellung
DE1080700B (de) * 1958-05-17 1960-04-28 Deutsche Elektronik Gmbh Verfahren zur Herstellung einer indirekt geheizten Kathode, insbesondere fuer Magnetrons hoher Schwingleistung, und nach diesem Verfahren hergestellte Kathode

Also Published As

Publication number Publication date
US2614942A (en) 1952-10-21
BE491070A (enrdf_load_stackoverflow)
CH278121A (de) 1951-09-30
NL70864C (enrdf_load_stackoverflow)
FR995225A (fr) 1951-11-29
GB666053A (en) 1952-02-06

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