GB1335398A - Method for the manufacture of activated cathodes - Google Patents

Method for the manufacture of activated cathodes

Info

Publication number
GB1335398A
GB1335398A GB6162570A GB6162570A GB1335398A GB 1335398 A GB1335398 A GB 1335398A GB 6162570 A GB6162570 A GB 6162570A GB 6162570 A GB6162570 A GB 6162570A GB 1335398 A GB1335398 A GB 1335398A
Authority
GB
United Kingdom
Prior art keywords
solution
cathodes
dec
sectional area
mass
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
GB6162570A
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.)
Egyesuelt Izzolampa es Villamossagi Rt
Original Assignee
Egyesuelt Izzolampa es Villamossagi Rt
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 Egyesuelt Izzolampa es Villamossagi Rt filed Critical Egyesuelt Izzolampa es Villamossagi Rt
Publication of GB1335398A publication Critical patent/GB1335398A/en
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
    • H01J9/047—Cathodes having impregnated bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Discharge Lamp (AREA)
  • Powder Metallurgy (AREA)
  • Microwave Tubes (AREA)

Abstract

1335398 Manufacturing cathodes EGYESULT IZZOLAMPA ES VILLAMOSSAGI RT 29 Dec 1970 [29 Dec 1969] 61625/70 Heading H1D A method of manufacturing activated cathodes, comprises sintering a tungsten cathode body to 85%-96% of its theoretical density, impregnating its pores with at least one solution of at least one oxygen-containing compound, of at least one element selected from lithium, sodium, potassium, rubidium, caesium, calcium, strontium, barium, gallium, indium, thallium, cerium, terbium, praseodymium, dysprosium, neodymium, holmium, erbium, samarium, thulium, europium, ytterbium, gadolinium and lutetium, the mass of the impregnating element amounting to 0À01 to 5À0% of the mass of the cathode body, and thereafter plastically deforming the body so that its cross-sectional area is reduced at least 100 times. The cathode body is produced by powder metallurgy which includes pressing and annealing at 1000‹ C., and is then sintered in a stream of hydrogen. After impregnation the body is preferably further impregnated with a solution of a zirconium compound, followed by immersion in an alcoholic polyamide solution. The reduction in cross-sectional area may be achieved by hammering and drawing, in the course of which the body is annealed.
GB6162570A 1969-12-29 1970-12-29 Method for the manufacture of activated cathodes Expired GB1335398A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUEE001773 1969-12-29

Publications (1)

Publication Number Publication Date
GB1335398A true GB1335398A (en) 1973-10-24

Family

ID=10995325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6162570A Expired GB1335398A (en) 1969-12-29 1970-12-29 Method for the manufacture of activated cathodes

Country Status (2)

Country Link
AT (1) AT308247B (en)
GB (1) GB1335398A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113755901A (en) * 2021-09-29 2021-12-07 内蒙金属材料研究所 Method for preparing cathode with composite metal layer for rare earth electrolysis

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113755901A (en) * 2021-09-29 2021-12-07 内蒙金属材料研究所 Method for preparing cathode with composite metal layer for rare earth electrolysis
CN113755901B (en) * 2021-09-29 2024-03-29 内蒙金属材料研究所 Method for preparing cathode with composite metal layer for rare earth electrolysis

Also Published As

Publication number Publication date
DE2035344B2 (en) 1972-06-22
DE2035344A1 (en) 1971-12-02
AT308247B (en) 1973-06-25

Similar Documents

Publication Publication Date Title
US3155864A (en) Dispenser cathode
GB675131A (en) Improved process for manufacturing porous carbon electrodes
US4774051A (en) Sintered nuclear fuel compact and method for its production
DE948726C (en) Cathode body with a supply of alkaline earth metal compounds for electrical discharge tubes
GB1496305A (en) Sintered silicon nitride body and a method of producing the same
GB1335398A (en) Method for the manufacture of activated cathodes
GB1208433A (en) Manufacture of ceramic artefacts having pores
ES286348A1 (en) Method of manufacture of a sinterized body of ferrous ferrous manganese cinc (Machine-translation by Google Translate, not legally binding)
US3168479A (en) Process for producing high density nuclear fuel particles
GB739232A (en) Improvements in or relating to dispenser cathodes
SU484666A3 (en) Method of making cermet products from composite materials
US3168601A (en) Process for the production of plutonium oxide-containing nuclear fuel compacts
GB1524074A (en) Electrically conductive composite materials
GB1162385A (en) Porous oxygen electrode containing silver
JPS6457535A (en) Manufacture of superconductive ceramics wire
RU2017130345A (en) METHOD FOR PRODUCING TARGETS FOR IRRADIATION, INTENDED FOR OBTAINING RADIOACTIVE ISOTOPES, AND TARGET FOR IRRADIATION
GB924595A (en) Method of manufacturing cathodes
US3692575A (en) Method for the production of dispenser cathode for electronic discharge vessels
US3081529A (en) Method for making electrodes
US2946699A (en) Process of impregnating graphite with a uranium compound
GB817066A (en) Improvements in or relating to the manufacture of dispenser cathodes
GB1101807A (en) Electrodes for fuel cells and electrochemical measuring cells
US2924737A (en) Glow discharge tube
KR910003699B1 (en) Manufacturing method of dispenser cathode
US2844494A (en) Method of producing electron emitting cathodes

Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee