FR2411483A1 - Cathode a oxyde et procede pour la preparation de nickel connu de la metallurgie des poudres destine a une telle cathode - Google Patents

Cathode a oxyde et procede pour la preparation de nickel connu de la metallurgie des poudres destine a une telle cathode

Info

Publication number
FR2411483A1
FR2411483A1 FR7834363A FR7834363A FR2411483A1 FR 2411483 A1 FR2411483 A1 FR 2411483A1 FR 7834363 A FR7834363 A FR 7834363A FR 7834363 A FR7834363 A FR 7834363A FR 2411483 A1 FR2411483 A1 FR 2411483A1
Authority
FR
France
Prior art keywords
tubes
poisoning
contg
reducing agent
oxide cathode
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
Application number
FR7834363A
Other languages
English (en)
Other versions
FR2411483B1 (fr
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
Priority claimed from GB7844332A external-priority patent/GB2012103B/en
Priority claimed from GB7844331A external-priority patent/GB2010911B/en
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2411483A1 publication Critical patent/FR2411483A1/fr
Application granted granted Critical
Publication of FR2411483B1 publication Critical patent/FR2411483B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0433—Nickel- or cobalt-based alloys
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid Thermionic Cathode (AREA)
  • Powder Metallurgy (AREA)

Abstract

LA REALISATION DU SUPPORT D'UNE CATHODE A OXYDE EN NICKEL CONNU DE LA METALLURGIE DES POUDRES DE FACON QUE LE REDUCTEUR POUR LE RECOUVREMENT EMISSIF CONSTITUE PAR AU MOINS UN METAL ALCALINO-TERREUX ET DE L'OXYGENE SOIT REPARTI, DE FACON NON HOMOGENE, A TRAVERS LE NICKEL ET Y CONSTITUE DES ILOTS PRESENTANT UNE CONCENTRATION ELEVEE EN REDUCTEUR DANS LA SURFACE DU SUPPORT, PERMET D'OBTENIR UNE CATHODE A OXYDE PRESENTANT UNE FAIBLE SENSIBILITE A L'INTOXICATION AU DEBUT DE SON FONCTIONNEMENT, CATHODE A PARTIR DE LAQUELLE PEUT ETRE REALISE UN TUBE A DECHARGE ELECTRIQUE PRESENTANT RAPIDEMENT DE BONNES PROPRIETES EMISSIVES. APPLICATION A LA FABRICATION DES TUBES ELECTRONIQUES.
FR7834363A 1977-12-06 1978-12-06 Cathode a oxyde et procede pour la preparation de nickel connu de la metallurgie des poudres destine a une telle cathode Granted FR2411483A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB5072377 1977-12-06
GB7844332A GB2012103B (en) 1977-12-06 1978-11-14 Oxide cathode
GB7844331A GB2010911B (en) 1977-12-06 1978-11-14 Method of making cathode support nickle strip

Publications (2)

Publication Number Publication Date
FR2411483A1 true FR2411483A1 (fr) 1979-07-06
FR2411483B1 FR2411483B1 (fr) 1984-09-21

Family

ID=27260167

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7834363A Granted FR2411483A1 (fr) 1977-12-06 1978-12-06 Cathode a oxyde et procede pour la preparation de nickel connu de la metallurgie des poudres destine a une telle cathode

Country Status (5)

Country Link
JP (1) JPS54100249A (fr)
CA (1) CA1139827A (fr)
DE (1) DE2852356C2 (fr)
FR (1) FR2411483A1 (fr)
IT (1) IT1101677B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443683A1 (fr) * 1990-02-20 1991-08-28 Stichting Energieonderzoek Centrum Nederland(ECN) Poudre d'alliage à base de nickel pour une anode poreuse pour une pile à combustible, méthode de préparation de la poudre et de l'anode, ainsi que l'anode obtenue et la pile à combustible

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0268259U (fr) * 1988-07-05 1990-05-23
JPH0850849A (ja) * 1994-05-31 1996-02-20 Nec Kansai Ltd 陰極部材およびそれを用いた電子管

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1115405A (fr) * 1952-10-06 1956-04-24 Philips Nv Tube à décharge comportant une cathode à oxydes
GB797095A (en) * 1955-08-25 1958-06-25 Standard Telephones Cables Ltd Carrier for oxide cathodes
GB947999A (en) * 1959-03-06 1964-01-29 Philips Electrical Ind Ltd Improvements in or relating to oxide cathodes
FR2007388A1 (fr) * 1968-04-04 1970-01-09 Philips Nv
FR2339950A1 (fr) * 1976-01-28 1977-08-26 Hitachi Ltd Cathode a oxydes a chauffage direct

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1076229A (en) * 1963-10-08 1967-07-19 Sylvania Electric Prod Cathodes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1115405A (fr) * 1952-10-06 1956-04-24 Philips Nv Tube à décharge comportant une cathode à oxydes
GB797095A (en) * 1955-08-25 1958-06-25 Standard Telephones Cables Ltd Carrier for oxide cathodes
GB947999A (en) * 1959-03-06 1964-01-29 Philips Electrical Ind Ltd Improvements in or relating to oxide cathodes
FR2007388A1 (fr) * 1968-04-04 1970-01-09 Philips Nv
FR2339950A1 (fr) * 1976-01-28 1977-08-26 Hitachi Ltd Cathode a oxydes a chauffage direct

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443683A1 (fr) * 1990-02-20 1991-08-28 Stichting Energieonderzoek Centrum Nederland(ECN) Poudre d'alliage à base de nickel pour une anode poreuse pour une pile à combustible, méthode de préparation de la poudre et de l'anode, ainsi que l'anode obtenue et la pile à combustible
US5238755A (en) * 1990-02-20 1993-08-24 Stichting Energieonderzoek Centrum Nederland Fuel cell containing an anode produced by powder metallurgy

Also Published As

Publication number Publication date
FR2411483B1 (fr) 1984-09-21
IT1101677B (it) 1985-10-07
DE2852356A1 (de) 1979-06-07
DE2852356C2 (de) 1985-07-04
JPS54100249A (en) 1979-08-07
CA1139827A (fr) 1983-01-18
JPS613061B2 (fr) 1986-01-29

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Legal Events

Date Code Title Description
ST Notification of lapse