ES8700797A1 - Un metodo de fabricacion de un catodo compensado a base de escandato - Google Patents

Un metodo de fabricacion de un catodo compensado a base de escandato

Info

Publication number
ES8700797A1
ES8700797A1 ES547509A ES547509A ES8700797A1 ES 8700797 A1 ES8700797 A1 ES 8700797A1 ES 547509 A ES547509 A ES 547509A ES 547509 A ES547509 A ES 547509A ES 8700797 A1 ES8700797 A1 ES 8700797A1
Authority
ES
Spain
Prior art keywords
matrix
scandium
plug
dispenser cathode
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
ES547509A
Other languages
English (en)
Other versions
ES547509A0 (es
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
Publication of ES547509A0 publication Critical patent/ES547509A0/es
Publication of ES8700797A1 publication Critical patent/ES8700797A1/es
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
    • H01J9/047—Cathodes having impregnated bodies
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Powder Metallurgy (AREA)

Abstract

METODO PARA LA FABRICACION DE UN CATODO EMISOR A BASE DE ESCANDATO. COMPRENDE LAS SIGUIENTES OPERACIONES: PRIMERA, SE COMPRIME UN TACO POROSO DE POLVO DE TUNGSTENO Y SE CALIENTE DICHO TACO COMPRIMIDO EN UNA ATMOSFERA NO REACTIVA Y EN CONTACTO CON ESCANDIO, POR ENCIMA DE LA TEMPERATURA DE FUSION DEL ESCANDIO; SEGUNDA, SE ENFRIA EL TACO EN UNA ATMOSFERA DE HIDROGENO Y A CONTINUACION SE PULVERIZA EN FRAGMENTOS; TERCERA, SE CALIENTAN LOS FRAGMENTOS HASTA UNA TEMPERATURA APROXIMADA DE 800 GRADOS Y SE QUEMAN EN UNA ATMOSFERA DE HIDROGENO; CUARTA, SE TRITURAN LOS FRAGMENTOS QUEMADOS HASTA FORMAR POLVO DE HIDRURO DE ESCANDIO-TUNGSTENO.
ES547509A 1984-10-05 1985-10-02 Un metodo de fabricacion de un catodo compensado a base de escandato Expired ES8700797A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8403032A NL8403032A (nl) 1984-10-05 1984-10-05 Werkwijze voor het vervaardigen van een scandaatnaleveringskathode, naleveringskathode vervaardigd met deze werkwijze.

Publications (2)

Publication Number Publication Date
ES547509A0 ES547509A0 (es) 1986-10-16
ES8700797A1 true ES8700797A1 (es) 1986-10-16

Family

ID=19844565

Family Applications (1)

Application Number Title Priority Date Filing Date
ES547509A Expired ES8700797A1 (es) 1984-10-05 1985-10-02 Un metodo de fabricacion de un catodo compensado a base de escandato

Country Status (7)

Country Link
US (1) US4594220A (es)
EP (1) EP0179513B1 (es)
JP (1) JPS6191821A (es)
CA (1) CA1265329A (es)
DE (1) DE3567316D1 (es)
ES (1) ES8700797A1 (es)
NL (1) NL8403032A (es)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8403031A (nl) * 1984-10-05 1986-05-01 Philips Nv Werkwijze voor het vervaardigen van een scandaatnaleveringskathode en scandaatnaleveringskathode vervaardigd volgens deze werkwijze.
JPS61183838A (ja) * 1985-02-08 1986-08-16 Hitachi Ltd 含浸形カソ−ド
KR900007751B1 (ko) * 1985-05-25 1990-10-19 미쯔비시덴끼 가부시기가이샤 전자관 음극 및 그 제조방법
CA1270890A (en) * 1985-07-19 1990-06-26 Keiji Watanabe Cathode for electron tube
KR900009071B1 (ko) * 1986-05-28 1990-12-20 가부시기가이샤 히다찌세이사구쇼 함침형 음극
NL8601374A (nl) * 1986-05-29 1987-12-16 Philips Nv Werkwijze voor het vervaardigen van een naleveringskathode.
NL8701583A (nl) * 1987-07-06 1989-02-01 Philips Nv Scandaatkathode.
NL8702727A (nl) * 1987-11-16 1989-06-16 Philips Nv Scandaatkathode.
US5418070A (en) * 1988-04-28 1995-05-23 Varian Associates, Inc. Tri-layer impregnated cathode
KR910003698B1 (en) * 1988-11-11 1991-06-08 Samsung Electronic Devices Cavity reservoir type dispenser cathode and method of the same
NL8900765A (nl) * 1989-03-29 1990-10-16 Philips Nv Scandaatkathode.
KR920001333B1 (ko) * 1989-11-09 1992-02-10 삼성전관 주식회사 디스펜서 음극
KR920001334B1 (ko) * 1989-11-09 1992-02-10 삼성전관 주식회사 디스펜서 음극
NL8902793A (nl) * 1989-11-13 1991-06-03 Philips Nv Scandaatkathode.
US4929418A (en) * 1990-01-22 1990-05-29 The United States Of America As Represented By The Secretary Of The Army Method of making a cathode from tungsten powder
US5041757A (en) * 1990-12-21 1991-08-20 Hughes Aircraft Company Sputtered scandate coatings for dispenser cathodes and methods for making same
DE4142535A1 (de) * 1991-12-21 1993-06-24 Philips Patentverwaltung Scandat-kathode und verfahren zur ihrer herstellung
KR950012511A (ko) * 1993-10-05 1995-05-16 이헌조 음극선관용 함침형 음극
ATE167755T1 (de) * 1993-10-28 1998-07-15 Philips Electronics Nv Vorratskathode und herstellungsverfahren
BE1007676A3 (nl) * 1993-10-28 1995-09-12 Philips Electronics Nv Werkwijze voor het vervaardigen van een naleveringskathode.
WO1996042100A1 (fr) 1995-06-09 1996-12-27 Kabushiki Kaisha Toshiba Structure de cathode impregnee, substrat de cathode pour une telle structure, structure de canon a electrons utilisant une telle structure de cathode, et tube electronique
DE19527723A1 (de) * 1995-07-31 1997-02-06 Philips Patentverwaltung Elektrische Entladungsröhre oder Entladungslampe und Scandat-Vorratskathode
US6533996B2 (en) * 2001-02-02 2003-03-18 The Boc Group, Inc. Method and apparatus for metal processing
KR101072948B1 (ko) 2003-02-14 2011-10-17 마퍼 리쏘그라피 아이피 비.브이. 디스펜서 음극
US7153586B2 (en) * 2003-08-01 2006-12-26 Vapor Technologies, Inc. Article with scandium compound decorative coating
CN1304152C (zh) * 2005-03-14 2007-03-14 北京工业大学 含钪扩散阴极基材粉末原料的制备方法
US20070026205A1 (en) 2005-08-01 2007-02-01 Vapor Technologies Inc. Article having patterned decorative coating

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899325A (en) * 1969-07-14 1975-08-12 Minnesota Mining & Mfg Method of making a closed end tube
NL165880C (nl) * 1975-02-21 1981-05-15 Philips Nv Naleveringskathode.
NL7905542A (nl) * 1979-07-17 1981-01-20 Philips Nv Naleveringskathode.
NL8201371A (nl) * 1982-04-01 1983-11-01 Philips Nv Werkwijzen voor het vervaardigen van een naleveringskathode en naleveringskathode vervaardigd volgens deze werkwijzen.

Also Published As

Publication number Publication date
ES547509A0 (es) 1986-10-16
JPH0558207B2 (es) 1993-08-26
JPS6191821A (ja) 1986-05-09
CA1265329A (en) 1990-02-06
EP0179513B1 (en) 1989-01-04
EP0179513A1 (en) 1986-04-30
NL8403032A (nl) 1986-05-01
US4594220A (en) 1986-06-10
DE3567316D1 (en) 1989-02-09

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