CA994280A - Preparing a lanthanum hexaboride activated cathode for an electric discharge tube - Google Patents

Preparing a lanthanum hexaboride activated cathode for an electric discharge tube

Info

Publication number
CA994280A
CA994280A CA172,130A CA172130A CA994280A CA 994280 A CA994280 A CA 994280A CA 172130 A CA172130 A CA 172130A CA 994280 A CA994280 A CA 994280A
Authority
CA
Canada
Prior art keywords
preparing
discharge tube
electric discharge
lanthanum hexaboride
activated cathode
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
CA172,130A
Other versions
CA172130S (en
Inventor
Antonius J.A. Van Stratum
Niranjan K. Mitra
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA994280A publication Critical patent/CA994280A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Gas-Filled Discharge Tubes (AREA)
CA172,130A 1972-05-30 1973-05-24 Preparing a lanthanum hexaboride activated cathode for an electric discharge tube Expired CA994280A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7207275A NL167796C (en) 1972-05-30 1972-05-30 METHOD FOR MANUFACTURING A LANTHANE HEXABORIDE-ACTIVATED CATHOD FOR AN ELECTRIC DISCHARGE TUBE

Publications (1)

Publication Number Publication Date
CA994280A true CA994280A (en) 1976-08-03

Family

ID=19816153

Family Applications (1)

Application Number Title Priority Date Filing Date
CA172,130A Expired CA994280A (en) 1972-05-30 1973-05-24 Preparing a lanthanum hexaboride activated cathode for an electric discharge tube

Country Status (9)

Country Link
US (1) US3833494A (en)
JP (1) JPS5524224B2 (en)
CA (1) CA994280A (en)
CH (1) CH574677A5 (en)
DE (1) DE2325273C3 (en)
FR (1) FR2186725B1 (en)
GB (1) GB1378620A (en)
NL (1) NL167796C (en)
SE (1) SE382886B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5128475A (en) * 1974-09-04 1976-03-10 Hitachi Ltd MAGUNETORONINKYOKUKOTAI
US4019081A (en) * 1974-10-25 1977-04-19 Bbc Brown Boveri & Company Limited Reaction cathode
US4055780A (en) * 1975-04-10 1977-10-25 National Institute For Researches In Inorganic Materials Thermionic emission cathode having a tip of a single crystal of lanthanum hexaboride
JPS6040133B2 (en) * 1975-04-10 1985-09-09 科学技術庁無機材質研究所長 Manufacturing method of cathode for thermionic emission
JPS5231652A (en) * 1975-09-04 1977-03-10 Natl Inst For Res In Inorg Mater Electron microscope
JPS5231651A (en) * 1975-09-04 1977-03-10 Natl Inst For Res In Inorg Mater Scan-type electron microscope
US4054946A (en) * 1976-09-28 1977-10-18 Bell Telephone Laboratories, Incorporated Electron source of a single crystal of lanthanum hexaboride emitting surface of (110) crystal plane
JPS57196443A (en) * 1981-05-29 1982-12-02 Denki Kagaku Kogyo Kk Manufacture of hot cathode
GB2117795A (en) * 1982-04-06 1983-10-19 Standard Telephones Cables Ltd Fabricating capacitors; forming ceramic films
GB8611967D0 (en) * 1986-05-16 1986-10-29 English Electric Valve Co Ltd Directly heated cathodes
JPS6489242A (en) * 1987-09-30 1989-04-03 Mitsubishi Electric Corp Electrode for discharge light source
DE4026298A1 (en) * 1990-08-20 1992-02-27 Siemens Ag Long life X=ray tube - has electron emitter based on rare earth material alloy
DE4026299A1 (en) * 1990-08-20 1992-02-27 Siemens Ag X-RAY ARRANGEMENT WITH AN X-RAY EMITTER
DE4026300A1 (en) * 1990-08-20 1992-02-27 Siemens Ag Electron emitter for X=ray tube - is of material contg. rare earth element covering support layer of large flat surface withstanding vibration
DE4026297A1 (en) * 1990-08-20 1992-02-27 Siemens Ag X=ray tube system - has heater for cathode contg. lanthanum material as electron emitter
DE4026301A1 (en) * 1990-08-20 1992-02-27 Siemens Ag ELECTRON EMITTER OF A X-RAY TUBE
DE10245392B3 (en) * 2002-09-28 2004-01-08 Vtd Vakuumtechnik Dresden Gmbh Tubular hollow cathode for high electrical outputs
JP4951477B2 (en) * 2006-12-04 2012-06-13 電気化学工業株式会社 Electron emission source
EP1983546A1 (en) * 2007-04-20 2008-10-22 PANalytical B.V. X-ray cathode and tube
JP5794598B2 (en) * 2012-07-03 2015-10-14 国立研究開発法人物質・材料研究機構 Metal hexaboride cold field emitter, manufacturing method thereof, and electron gun
CN104223613B (en) 2014-09-26 2016-09-28 京东方科技集团股份有限公司 Intelligent bracelet display control program and Intelligent bracelet

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312856A (en) * 1963-03-26 1967-04-04 Gen Electric Rhenium supported metallic boride cathode emitters
US3498897A (en) * 1967-07-25 1970-03-03 Ford Motor Co Method for manufacturing multilayered product
US3630770A (en) * 1969-04-30 1971-12-28 Gen Electric Method for fabricating lanthanum boride cathodes

Also Published As

Publication number Publication date
DE2325273C3 (en) 1981-07-09
NL167796C (en) 1982-01-18
CH574677A5 (en) 1976-04-15
DE2325273B2 (en) 1980-09-04
FR2186725A1 (en) 1974-01-11
US3833494A (en) 1974-09-03
JPS4944661A (en) 1974-04-26
JPS5524224B2 (en) 1980-06-27
GB1378620A (en) 1974-12-27
SE382886B (en) 1976-02-16
NL7207275A (en) 1973-12-04
NL167796B (en) 1981-08-17
FR2186725B1 (en) 1976-09-17
DE2325273A1 (en) 1973-12-13

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