WO2003015116A1 - Sintering type cathode and production method therefor - Google Patents

Sintering type cathode and production method therefor Download PDF

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Publication number
WO2003015116A1
WO2003015116A1 PCT/JP2002/008024 JP0208024W WO03015116A1 WO 2003015116 A1 WO2003015116 A1 WO 2003015116A1 JP 0208024 W JP0208024 W JP 0208024W WO 03015116 A1 WO03015116 A1 WO 03015116A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
tip end
end portion
cathode tip
type cathode
Prior art date
Application number
PCT/JP2002/008024
Other languages
French (fr)
Japanese (ja)
Inventor
Koji Kawai
Original Assignee
Hamamatsu Photonics K.K.
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 Hamamatsu Photonics K.K. filed Critical Hamamatsu Photonics K.K.
Priority to JP2003519954A priority Critical patent/JPWO2003015116A1/en
Publication of WO2003015116A1 publication Critical patent/WO2003015116A1/en

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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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • 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)
  • Solid Thermionic Cathode (AREA)

Abstract

A sintering type cathode (C1) has a shell-shaped cathode tip end portion (35) consisting of a conical peak portion (31) provided on one edge side facing an anode and a cylindrical base portion (33) provided on the other edge side. The cathode tip end portion (35) forms an electron radiation portion for emitting electrons. The cathode tip end portion (35) contains a particle-form high-melting-point metal (41), an aluminum layer (43) covering at least part of the surface of the high-melting-point metal (41), and a metal oxide (45) as an easily electron-emitting substance. This cathode tip end portion (35) is formed by mixing into the aluminum layer (43)-coated metal (41) a compound (metal carbonate) containing a metal serving as easily electron-emitting substance and changed into a metal oxide (45) on heat treating, and sintering the mixture.
PCT/JP2002/008024 2001-08-06 2002-08-06 Sintering type cathode and production method therefor WO2003015116A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003519954A JPWO2003015116A1 (en) 2001-08-06 2002-08-06 Sintered cathode and method of manufacturing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001238201 2001-08-06
JP2001-238201 2001-08-06

Publications (1)

Publication Number Publication Date
WO2003015116A1 true WO2003015116A1 (en) 2003-02-20

Family

ID=19069160

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/008024 WO2003015116A1 (en) 2001-08-06 2002-08-06 Sintering type cathode and production method therefor

Country Status (2)

Country Link
JP (1) JPWO2003015116A1 (en)
WO (1) WO2003015116A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50110762A (en) * 1974-02-09 1975-09-01
JPS5313348A (en) * 1976-06-21 1978-02-06 Varian Associates Microwave tube with iridium cathode
JPS56102033A (en) * 1980-01-17 1981-08-15 Matsushita Electric Ind Co Ltd Hot cathode
JPS58133739A (en) * 1982-02-03 1983-08-09 Hitachi Ltd Impregnated cathode
JPS62213030A (en) * 1986-03-14 1987-09-18 Sony Corp Impregnated type cathode
JPH08222120A (en) * 1995-02-16 1996-08-30 New Japan Radio Co Ltd Cathode and manufacture thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50110762A (en) * 1974-02-09 1975-09-01
JPS5313348A (en) * 1976-06-21 1978-02-06 Varian Associates Microwave tube with iridium cathode
JPS56102033A (en) * 1980-01-17 1981-08-15 Matsushita Electric Ind Co Ltd Hot cathode
JPS58133739A (en) * 1982-02-03 1983-08-09 Hitachi Ltd Impregnated cathode
JPS62213030A (en) * 1986-03-14 1987-09-18 Sony Corp Impregnated type cathode
JPH08222120A (en) * 1995-02-16 1996-08-30 New Japan Radio Co Ltd Cathode and manufacture thereof

Also Published As

Publication number Publication date
JPWO2003015116A1 (en) 2004-12-02

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