FR2237303B1 - - Google Patents

Info

Publication number
FR2237303B1
FR2237303B1 FR7423728A FR7423728A FR2237303B1 FR 2237303 B1 FR2237303 B1 FR 2237303B1 FR 7423728 A FR7423728 A FR 7423728A FR 7423728 A FR7423728 A FR 7423728A FR 2237303 B1 FR2237303 B1 FR 2237303B1
Authority
FR
France
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
FR7423728A
Other versions
FR2237303A1 (fr
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of FR2237303A1 publication Critical patent/FR2237303A1/fr
Application granted granted Critical
Publication of FR2237303B1 publication Critical patent/FR2237303B1/fr
Expired 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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/26—Supports for the emissive material
    • 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
    • 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)
FR7423728A 1973-07-09 1974-07-08 Expired FR2237303B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH994073A CH582951A5 (fr) 1973-07-09 1973-07-09

Publications (2)

Publication Number Publication Date
FR2237303A1 FR2237303A1 (fr) 1975-02-07
FR2237303B1 true FR2237303B1 (fr) 1977-10-07

Family

ID=4357329

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7423728A Expired FR2237303B1 (fr) 1973-07-09 1974-07-08

Country Status (13)

Country Link
US (1) US4083811A (fr)
JP (1) JPS5728176B2 (fr)
AT (1) AT377639B (fr)
BR (1) BR7405601D0 (fr)
CH (1) CH582951A5 (fr)
DE (1) DE2344936C3 (fr)
FR (1) FR2237303B1 (fr)
GB (1) GB1469554A (fr)
HU (1) HU169833B (fr)
IN (1) IN143037B (fr)
NL (1) NL179013C (fr)
SE (1) SE388717C (fr)
YU (2) YU185274A (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56114664A (en) * 1980-02-01 1981-09-09 Disco Abrasive Sys Ltd Manufacture of grindstone
US4273683A (en) * 1977-12-16 1981-06-16 Hitachi, Ltd. Oxide cathode and process for production thereof
JPS5488059A (en) * 1977-12-26 1979-07-12 Hitachi Ltd Thermion emission cathode
CH629033A5 (de) * 1978-05-05 1982-03-31 Bbc Brown Boveri & Cie Gluehkathode.
DE2822665A1 (de) * 1978-05-05 1979-11-08 Bbc Brown Boveri & Cie Gluehkathodenmaterial
JPS605424B2 (ja) * 1978-11-09 1985-02-12 本田技研工業株式会社 研削整用半球形砥石の砥粒電着装置
US4250428A (en) * 1979-05-09 1981-02-10 The United States Of America As Represented By The Secretary Of The Army Bonded cathode and electrode structure with layered insulation, and method of manufacture
FR2498372A1 (fr) * 1981-01-16 1982-07-23 Thomson Csf Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode
JPS58143957A (ja) * 1982-02-23 1983-08-26 Kurisutensen Maikai Kk 砥石支持台の製造方法
CN85100483B (zh) * 1985-04-01 1988-10-19 上海灯泡厂 超声波换能器用背载材料
JPS63187527A (ja) * 1987-01-28 1988-08-03 Hitachi Ltd 電子管陰極構体
DE4305558A1 (de) * 1993-02-24 1994-08-25 Asea Brown Boveri Verfahren zur Herstellung von Drähten, welche insbesondere für Kathoden von Elektronenröhren geeignet sind
DE4421793A1 (de) * 1994-06-22 1996-01-04 Siemens Ag Thermionischer Elektronenemitter für eine Elektronenröhre
DE4421810C2 (de) * 1994-06-22 1996-08-29 Siemens Ag Thermionischer Elektronenemitter und Verfahren zu dessen Herstellung
KR100200661B1 (ko) * 1994-10-12 1999-06-15 손욱 전자관용 음극
US6815876B1 (en) * 1999-06-23 2004-11-09 Agere Systems Inc. Cathode with improved work function and method for making the same
JP2012203998A (ja) * 2011-03-23 2012-10-22 Nippon Tungsten Co Ltd タングステン陰極材料
US20170330725A1 (en) 2016-05-13 2017-11-16 Axcelis Technologies, Inc. Lanthanated tungsten ion source and beamline components
AT16409U1 (de) 2017-05-23 2019-08-15 Plansee Se Kathodenwerkstoff

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB182817A (en) * 1921-07-11 1923-08-09 Drahtlose Telegraphie Gmbh Improvements in the cathodes of electric discharge tubes
US1794298A (en) * 1926-09-21 1931-02-24 Gen Electric Thermionic cathode
DE559817C (de) * 1927-12-17 1932-09-24 Siemens & Halske Akt Ges Gasgefuelltes Entladungsrohr
DE744453C (de) * 1934-06-13 1944-01-15 Hans Bodo Willers Emissionselektrode mit einer aktiven Schicht aus stark elektronenemittierenden Stoffen mit einem Traegerdraht aus einer Nickellegierung
NL48128C (fr) * 1935-02-23
NL54775C (fr) * 1940-01-24
DE875689C (de) * 1942-06-28 1953-05-04 Lorenz C Ag Sekundaeremissionsschicht fuer Prallelektroden
US2438732A (en) * 1947-03-15 1948-03-30 Eitel Mcculough Inc Electron tube cathode
DE973336C (de) * 1952-04-09 1960-01-28 Philips Nv Kathode fuer elektrische Entladungsroehren mit einem Vorrat an Erdalkalimetallverbindungen
US3105290A (en) * 1958-12-18 1963-10-01 Westinghouse Electric Corp Cathode for electron discharge device
NL266639A (fr) * 1960-07-05
GB929668A (en) * 1960-09-28 1963-06-26 Gen Electric Co Ltd Improvements in or relating to electrodes for electric discharge apparatus
US3290543A (en) * 1963-06-03 1966-12-06 Varian Associates Grain oriented dispenser thermionic emitter for electron discharge device
DE1614938A1 (de) * 1966-09-26 1970-12-23 Atomic Energy Authority Uk Elektronen emittierende Kathode,insbesondere fuer Elektronen-Bestrahlungsmaschinen
NL6807899A (fr) * 1967-06-06 1968-12-09
DE1614541A1 (de) * 1967-06-21 1970-08-20 Siemens Ag Thorium-Film-Kathode fuer elektrische Entladungsgefaesse
JPS5134675B2 (fr) * 1971-09-03 1976-09-28
CH579824A5 (fr) * 1974-10-25 1976-09-15 Bbc Brown Boveri & Cie

Also Published As

Publication number Publication date
IN143037B (fr) 1977-09-24
YU320780A (en) 1983-02-28
NL179013B (nl) 1986-01-16
SE388717B (sv) 1976-10-11
DE2344936B2 (de) 1975-09-04
SE388717C (sv) 1983-05-02
SE7408863L (fr) 1975-01-10
JPS5728176B2 (fr) 1982-06-15
GB1469554A (en) 1977-04-06
FR2237303A1 (fr) 1975-02-07
CH582951A5 (fr) 1976-12-15
BR7405601D0 (pt) 1975-05-13
YU185274A (en) 1982-05-31
DE2344936C3 (de) 1984-01-19
NL7409188A (nl) 1975-01-13
NL179013C (nl) 1988-04-18
AT377639B (de) 1985-04-10
HU169833B (fr) 1977-02-28
JPS5039868A (fr) 1975-04-12
US4083811A (en) 1978-04-11
ATA433974A (de) 1979-07-15
DE2344936A1 (de) 1975-02-06

Similar Documents

Publication Publication Date Title
AU476761B2 (fr)
AU474593B2 (fr)
AU474511B2 (fr)
AU474838B2 (fr)
AU471343B2 (fr)
AU476714B2 (fr)
AU472848B2 (fr)
AU476696B2 (fr)
AU466283B2 (fr)
AU477823B2 (fr)
AU7504274A (fr)
AU471461B2 (fr)
AU476873B1 (fr)
AU477824B2 (fr)
CH560296A5 (fr)
AU479422A (fr)
BG20077A3 (fr)
BG19984A1 (fr)
BG19627A1 (fr)
BG19440A1 (fr)
BG19324A1 (fr)
BE822734A (fr)
BG26961A3 (fr)
AU479562A (fr)
AU479539A (fr)

Legal Events

Date Code Title Description
ST Notification of lapse