KR910003699B1 - Manufacturing method of dispenser cathode - Google Patents

Manufacturing method of dispenser cathode

Info

Publication number
KR910003699B1
KR910003699B1 KR8815259A KR880015259A KR910003699B1 KR 910003699 B1 KR910003699 B1 KR 910003699B1 KR 8815259 A KR8815259 A KR 8815259A KR 880015259 A KR880015259 A KR 880015259A KR 910003699 B1 KR910003699 B1 KR 910003699B1
Authority
KR
South Korea
Prior art keywords
powder
manufacturing
dispenser cathode
pellet
metal
Prior art date
Application number
KR8815259A
Other languages
Korean (ko)
Inventor
Kyong-Chon Son
Original Assignee
Samsung Electronic Devices
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 Samsung Electronic Devices filed Critical Samsung Electronic Devices
Priority to KR8815259A priority Critical patent/KR910003699B1/en
Priority to GB8924407A priority patent/GB2226573B/en
Priority to JP29476289A priority patent/JPH02244536A/en
Application granted granted Critical
Publication of KR910003699B1 publication Critical patent/KR910003699B1/en

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
    • C22C1/045—Alloys based on refractory metals
    • 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

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

Abstract

The method includes the steps of imersing a powder mixture or its pellet made by mixing the powder of at least two or more metals selected from among the carbonates of Sr, Ba and Ca in at least one metal powder selected from among Mo, Ta and W or alloy powder of at least two or more metal selected from Mo, Ta and W, into an aqueous solution containing an aluminium compound and impregnating the aluminium ingredient into the powder mixture or the pellet. Accordingly, the electron emitting efficiency is improved.
KR8815259A 1988-11-19 1988-11-19 Manufacturing method of dispenser cathode KR910003699B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR8815259A KR910003699B1 (en) 1988-11-19 1988-11-19 Manufacturing method of dispenser cathode
GB8924407A GB2226573B (en) 1988-11-19 1989-10-30 Method of manufacturing a porous pellet for a dispenser cathode
JP29476289A JPH02244536A (en) 1988-11-19 1989-11-13 Manufacture of dispenser cathod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR8815259A KR910003699B1 (en) 1988-11-19 1988-11-19 Manufacturing method of dispenser cathode

Publications (1)

Publication Number Publication Date
KR910003699B1 true KR910003699B1 (en) 1991-06-08

Family

ID=19279420

Family Applications (1)

Application Number Title Priority Date Filing Date
KR8815259A KR910003699B1 (en) 1988-11-19 1988-11-19 Manufacturing method of dispenser cathode

Country Status (3)

Country Link
JP (1) JPH02244536A (en)
KR (1) KR910003699B1 (en)
GB (1) GB2226573B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2583161C1 (en) * 2014-12-30 2016-05-10 Акционерное общество "Научно-производственное предприятие "Исток" имени А.И. Шокина" (АО "НПП "Исток" им. Шокина") Method for producing metal porous cathode
RU2724980C1 (en) * 2019-10-15 2020-06-29 Акционерное общество "Научно-производственное предприятие "Алмаз" (АО "НПП "Алмаз") Two-layer dispensed cathode and method of its manufacturing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1465473A (en) * 1922-07-12 1923-08-21 Thomas C Hansen Means for molding backings for artificial teeth
US2813807A (en) * 1954-07-19 1957-11-19 Philips Corp Method of making a dispenser cathode
NL274464A (en) * 1961-02-07
GB1052791A (en) * 1962-08-24
JPS551029A (en) * 1978-06-19 1980-01-07 New Japan Radio Co Ltd Manufacture of impregnated cathode

Also Published As

Publication number Publication date
JPH02244536A (en) 1990-09-28
GB8924407D0 (en) 1989-12-20
GB2226573B (en) 1992-12-02
GB2226573A (en) 1990-07-04

Similar Documents

Publication Publication Date Title
RU97112603A (en) SOLID CHEMICAL CURRENT SOURCE
KR910003699B1 (en) Manufacturing method of dispenser cathode
JPS5596531A (en) Directly heated cathode for electron tube
EG15715A (en) N-phenylcarbamate compound its production,and drug-tolerant fungi preventive composition containing said compounds as an active ingredient
JPS6489242A (en) Electrode for discharge light source
MY130117A (en) Cathode for electron tube
RU96121013A (en) CATALYST DIRECT HEAT
JPS55144631A (en) Directly-heated cathode for electronic tube
EP0063474A3 (en) Thermionic cathode and process for preparing the same
JPS54131861A (en) Direct-heated cathode for electric discharge tube
JPS535011A (en) Press cathode
JPS53139375A (en) Electrode for discharge lamp
JPS53137660A (en) Electron gun
JPS5417660A (en) Manufacture of electron emission hot-cathode
JPS5210878A (en) Luminous compositions
JPS5212789A (en) Fabrication method of electrode for discharge lamp
JPS5537704A (en) Method for manufacturing sintered type electrode for discharge lamp
JPS5457858A (en) Indirectly-heated cathode structure
JPS53111680A (en) Manufacturing fluorescent lamps
JPS5397798A (en) Superconductive compound wire and production of the same
JPS5394284A (en) Fluorescent substance
JPS541287A (en) Fluorescent substance
JPS53128173A (en) Hydrogen discharge tube
JPS524771A (en) Direct-heating-type cathode
JPS546761A (en) Manufacture of electronic cathode-ray tube

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20000530

Year of fee payment: 10

LAPS Lapse due to unpaid annual fee