FR66913E - Substances à pouvoir émissif élevé - Google Patents

Substances à pouvoir émissif élevé

Info

Publication number
FR66913E
FR66913E FR66913DA FR66913E FR 66913 E FR66913 E FR 66913E FR 66913D A FR66913D A FR 66913DA FR 66913 E FR66913 E FR 66913E
Authority
FR
France
Prior art keywords
substances
high emissivity
emissivity
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
Other languages
English (en)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR66913E publication Critical patent/FR66913E/fr
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
    • 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
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
FR66913D 1953-07-20 1954-07-13 Substances à pouvoir émissif élevé Expired FR66913E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US369175A US2900281A (en) 1953-07-20 1953-07-20 Method of bonding metal borides to graphite

Publications (1)

Publication Number Publication Date
FR66913E true FR66913E (fr) 1957-10-31

Family

ID=23454404

Family Applications (1)

Application Number Title Priority Date Filing Date
FR66913D Expired FR66913E (fr) 1953-07-20 1954-07-13 Substances à pouvoir émissif élevé

Country Status (3)

Country Link
US (1) US2900281A (fr)
FR (1) FR66913E (fr)
GB (1) GB754499A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013201A1 (fr) * 1978-12-27 1980-07-09 Thomson-Csf Cathode à chauffage direct et tube électronique haute fréquence comportant une telle cathode

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3119171A (en) * 1958-07-23 1964-01-28 Texas Instruments Inc Method of making low resistance electrical contacts on graphite
US3348929A (en) * 1962-04-16 1967-10-24 Metalurgitschen Zd Lenin Protecting carbon materials from oxidation
US3285697A (en) * 1963-04-03 1966-11-15 Li Pei-Ching Method for making single crystal graphite sheets
US3521884A (en) * 1965-03-22 1970-07-28 Dow Chemical Co Article with an expanded vermicular graphite core
JPS53128971A (en) * 1977-04-18 1978-11-10 Hitachi Ltd Manufacture of electron radiation cathode
JPS57196443A (en) * 1981-05-29 1982-12-02 Denki Kagaku Kogyo Kk Manufacture of hot cathode
US5871848A (en) * 1987-05-22 1999-02-16 Oregon Graduate Institute Of Science & Technology Enhanced-wetting, boron-based liquid-metal ion source and method

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1262134A (en) * 1914-06-02 1918-04-09 Georg Stoelle Apparatus for making metallic coatings.
US1162149A (en) * 1914-10-22 1915-11-30 Engelhardt A Eckhardt Process of making wear-withstanding coat.
US1589017A (en) * 1918-10-11 1926-06-15 John C Lincoln Method and means for electric-arc welding
US1858413A (en) * 1929-12-30 1932-05-17 Ig Farbenindustrie Ag Calcium boride
US1948382A (en) * 1931-09-02 1934-02-20 Nat Carbon Co Inc Oxidation resisting carbon article
US2459812A (en) * 1946-05-31 1949-01-25 Standard Telephones Cables Ltd Welding apparatus
US2592414A (en) * 1947-11-08 1952-04-08 Air Reduction Method of producing hard-faced metal
US2659685A (en) * 1950-03-31 1953-11-17 Gen Electric Boride cathodes
US2678870A (en) * 1950-06-21 1954-05-18 Walter M Weil Manufacture of refractory metal borides
US2671735A (en) * 1950-07-07 1954-03-09 Bell Telephone Labor Inc Electrical resistors and methods of making them
US2755199A (en) * 1951-02-19 1956-07-17 Kellogg M W Co Hard coated composite and method of forming

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013201A1 (fr) * 1978-12-27 1980-07-09 Thomson-Csf Cathode à chauffage direct et tube électronique haute fréquence comportant une telle cathode
FR2445605A1 (fr) * 1978-12-27 1980-07-25 Thomson Csf Cathode a chauffage direct et tube electronique haute frequence comportant une telle cathode

Also Published As

Publication number Publication date
GB754499A (en) 1956-08-08
US2900281A (en) 1959-08-18

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