FR2475796A1 - Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode - Google Patents

Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode Download PDF

Info

Publication number
FR2475796A1
FR2475796A1 FR8003050A FR8003050A FR2475796A1 FR 2475796 A1 FR2475796 A1 FR 2475796A1 FR 8003050 A FR8003050 A FR 8003050A FR 8003050 A FR8003050 A FR 8003050A FR 2475796 A1 FR2475796 A1 FR 2475796A1
Authority
FR
France
Prior art keywords
layer
cathode
metal
cathode according
tungsten
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
FR8003050A
Other languages
English (en)
French (fr)
Other versions
FR2475796B1 (enExample
Inventor
Arvind Shroff
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR8003050A priority Critical patent/FR2475796A1/fr
Publication of FR2475796A1 publication Critical patent/FR2475796A1/fr
Application granted granted Critical
Publication of FR2475796B1 publication Critical patent/FR2475796B1/fr
Granted 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

  • Microwave Tubes (AREA)
FR8003050A 1980-02-12 1980-02-12 Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode Granted FR2475796A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8003050A FR2475796A1 (fr) 1980-02-12 1980-02-12 Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8003050A FR2475796A1 (fr) 1980-02-12 1980-02-12 Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode

Publications (2)

Publication Number Publication Date
FR2475796A1 true FR2475796A1 (fr) 1981-08-14
FR2475796B1 FR2475796B1 (enExample) 1982-09-03

Family

ID=9238489

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8003050A Granted FR2475796A1 (fr) 1980-02-12 1980-02-12 Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode

Country Status (1)

Country Link
FR (1) FR2475796A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533852A (en) * 1981-12-08 1985-08-06 U.S. Philips Corporation Method of manufacturing a thermionic cathode and thermionic cathode manufactured by means of said method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533852A (en) * 1981-12-08 1985-08-06 U.S. Philips Corporation Method of manufacturing a thermionic cathode and thermionic cathode manufactured by means of said method

Also Published As

Publication number Publication date
FR2475796B1 (enExample) 1982-09-03

Similar Documents

Publication Publication Date Title
US4143292A (en) Field emission cathode of glassy carbon and method of preparation
US4165473A (en) Electron tube with dispenser cathode
US7169437B1 (en) Method of coating an anode/collector with carbon nanotubes
US3195004A (en) Cathode heater for electron discharge devices
EP0013201B1 (fr) Cathode à chauffage direct et tube électronique haute fréquence comportant une telle cathode
US4364780A (en) Method of providing a metal component with a thermally black surface
US4009409A (en) Fast warmup cathode and method of making same
US4577134A (en) Direct heating cathode and a process for manufacturing same
US6417607B1 (en) Cold electrode for gas discharges
US4393328A (en) Hot cathode, its production process and electron tube incorporating such a cathode
FR2475796A1 (fr) Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode
US6856080B2 (en) Carbonized resin coated anode
EP0637046B1 (en) Thermoionic emissive cathode method of fabricating the same thermoionic emissive cathode and electron beam apparatus
FR2515869A1 (fr) Tube electronique et cathode a impregnation a emission elevee
US2872611A (en) Cathode
US4928034A (en) Impregnated cathode
SU1064341A1 (ru) Термоэлектронный катод
JPH11185607A (ja) 陰極加熱用ヒータ
JPH0794072A (ja) 電子ビーム照射用の熱陰極およびその熱陰極の製造方法およびその熱陰極を用いた電子ビーム加工装置
JPS6134218B2 (enExample)
FR2716034A1 (fr) Emetteurs thermoélectroniques d'électrons et procédés pour leur fabrication.
CN108376638B (zh) 一种钍钨电极及在其表面渗透碳化二钨层的方法
KR920008786B1 (ko) 산화물 음극
KR100198572B1 (ko) 함침형 음극의 활성화 처리방법
KR100249208B1 (ko) 함침형 음극

Legal Events

Date Code Title Description
CL Concession to grant licences
ST Notification of lapse