JPS57202621A - Manufacturing method for electron emission substance - Google Patents

Manufacturing method for electron emission substance

Info

Publication number
JPS57202621A
JPS57202621A JP8844181A JP8844181A JPS57202621A JP S57202621 A JPS57202621 A JP S57202621A JP 8844181 A JP8844181 A JP 8844181A JP 8844181 A JP8844181 A JP 8844181A JP S57202621 A JPS57202621 A JP S57202621A
Authority
JP
Japan
Prior art keywords
scandium oxide
processing
manufacturing
electron emission
under
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
JP8844181A
Other languages
Japanese (ja)
Other versions
JPH0219574B2 (en
Inventor
Keiji Fukuyama
Masato Saito
Keiji Watabe
Keiichi Baba
Masahiro Dobashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8844181A priority Critical patent/JPS57202621A/en
Publication of JPS57202621A publication Critical patent/JPS57202621A/en
Publication of JPH0219574B2 publication Critical patent/JPH0219574B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Discharge Lamp (AREA)

Abstract

PURPOSE:To shorten the processing time of the scandium oxide and to achieve the mass processing, by thermally processing the scandium oxide under the predetermined temperature in the atmosphere or the oxygen. CONSTITUTION:A silicon boat 21 containing the scandium oxide 20 is placed in a silicon furnace core tube 19 having the inner diameter of 60cm and the length of 1300mm where the air is filled at the inside, then the thermal processing is performed in a siliconit electric furnace 22 for 10min. under the temperature of 1,000 deg.C. Consequently large amount of scandium oxide can be processed in short time resulting in the excellent flux maintaing rare.
JP8844181A 1981-06-09 1981-06-09 Manufacturing method for electron emission substance Granted JPS57202621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8844181A JPS57202621A (en) 1981-06-09 1981-06-09 Manufacturing method for electron emission substance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8844181A JPS57202621A (en) 1981-06-09 1981-06-09 Manufacturing method for electron emission substance

Publications (2)

Publication Number Publication Date
JPS57202621A true JPS57202621A (en) 1982-12-11
JPH0219574B2 JPH0219574B2 (en) 1990-05-02

Family

ID=13942885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8844181A Granted JPS57202621A (en) 1981-06-09 1981-06-09 Manufacturing method for electron emission substance

Country Status (1)

Country Link
JP (1) JPS57202621A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61269828A (en) * 1985-05-25 1986-11-29 Mitsubishi Electric Corp Manufacture of electron tube cathode

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5316308A (en) * 1976-07-30 1978-02-15 Tokyo Gasu Denro Kk Continuousstype rotary retort furnace
JPS5632659A (en) * 1979-08-27 1981-04-02 Mitsubishi Electric Corp Metal vapor discharge lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5316308A (en) * 1976-07-30 1978-02-15 Tokyo Gasu Denro Kk Continuousstype rotary retort furnace
JPS5632659A (en) * 1979-08-27 1981-04-02 Mitsubishi Electric Corp Metal vapor discharge lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61269828A (en) * 1985-05-25 1986-11-29 Mitsubishi Electric Corp Manufacture of electron tube cathode
JPH0418660B2 (en) * 1985-05-25 1992-03-27 Mitsubishi Electric Corp

Also Published As

Publication number Publication date
JPH0219574B2 (en) 1990-05-02

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