JPS56102032A - Impregnated cathode - Google Patents

Impregnated cathode

Info

Publication number
JPS56102032A
JPS56102032A JP416680A JP416680A JPS56102032A JP S56102032 A JPS56102032 A JP S56102032A JP 416680 A JP416680 A JP 416680A JP 416680 A JP416680 A JP 416680A JP S56102032 A JPS56102032 A JP S56102032A
Authority
JP
Japan
Prior art keywords
electron emission
metal oxide
earth metal
main component
alkali earth
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.)
Pending
Application number
JP416680A
Other languages
Japanese (ja)
Inventor
Chokichiro Shibata
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.)
New Japan Radio Co Ltd
Japan Radio Co Ltd
Original Assignee
New Japan Radio Co Ltd
Japan Radio Co Ltd
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 New Japan Radio Co Ltd, Japan Radio Co Ltd filed Critical New Japan Radio Co Ltd
Priority to JP416680A priority Critical patent/JPS56102032A/en
Publication of JPS56102032A publication Critical patent/JPS56102032A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

PURPOSE:To improve the electron emission characteristic by employing specific composition ratio between total mol of alkali earth metal oxide or main component of electron emission material to be impregnated in the cathode and Al2O3. CONSTITUTION:Main component in the components of electron emission material or alkali earth metal oxide and Al203 are mixed with mol ratio of 3:1 then burnt under high temperature. Such composition of material will provide stable compound resulting in considerable improvement of electron emission characteristic.
JP416680A 1980-01-17 1980-01-17 Impregnated cathode Pending JPS56102032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP416680A JPS56102032A (en) 1980-01-17 1980-01-17 Impregnated cathode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP416680A JPS56102032A (en) 1980-01-17 1980-01-17 Impregnated cathode

Publications (1)

Publication Number Publication Date
JPS56102032A true JPS56102032A (en) 1981-08-15

Family

ID=11577149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP416680A Pending JPS56102032A (en) 1980-01-17 1980-01-17 Impregnated cathode

Country Status (1)

Country Link
JP (1) JPS56102032A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102254766A (en) * 2010-05-19 2011-11-23 中国科学院电子学研究所 Method for preparing storage-type rare-earth oxide cathode

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS551029A (en) * 1978-06-19 1980-01-07 New Japan Radio Co Ltd Manufacture of impregnated cathode

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS551029A (en) * 1978-06-19 1980-01-07 New Japan Radio Co Ltd Manufacture of impregnated cathode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102254766A (en) * 2010-05-19 2011-11-23 中国科学院电子学研究所 Method for preparing storage-type rare-earth oxide cathode

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