GB1177489A - A Method for Manufacturing Black Heaters for Electron Valves. - Google Patents

A Method for Manufacturing Black Heaters for Electron Valves.

Info

Publication number
GB1177489A
GB1177489A GB5839766A GB5839766A GB1177489A GB 1177489 A GB1177489 A GB 1177489A GB 5839766 A GB5839766 A GB 5839766A GB 5839766 A GB5839766 A GB 5839766A GB 1177489 A GB1177489 A GB 1177489A
Authority
GB
United Kingdom
Prior art keywords
heaters
dec
heater
suspension
oxide layer
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
GB5839766A
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.)
TAVKOZLESI KI
Tavkoezlesi Kutato Intezet
Original Assignee
TAVKOZLESI KI
Tavkoezlesi Kutato Intezet
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 TAVKOZLESI KI, Tavkoezlesi Kutato Intezet filed Critical TAVKOZLESI KI
Publication of GB1177489A publication Critical patent/GB1177489A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/02—Electrophoretic coating characterised by the process with inorganic 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
    • H01J9/08—Manufacture of heaters for indirectly-heated cathodes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid Thermionic Cathode (AREA)
  • Resistance Heating (AREA)

Abstract

1,177,489. Cathode constructions. TAVKOZLESI KUTATO INTEZET. 30 Dec., 1966 [30 Dec., 1965], No. 58397/66. Heading H1D. [Also in Division C7] A method for manufacturing black heaters for electron valves on cathode - ray tubes for example, comprises forming an aluminium oxide layer on the surface of the heater and then depositing by electro-phoresis upon the oxide layer tungsten and/or molybdenum containing particles from a compound held in suspension in a liquid, the heater being then subjected to reduction in a hydrogen stream at 950‹ to 1550‹ C. to produce a finely divided black metal coating on its surface. In examples, tungsten acid and butyl alcohol or molybdenum oxide and 1À2% collodion solution are ground in a porcelain grinder to obtain the suspension. Reductions at 1000‹ and 1550‹ C. are instanced.
GB5839766A 1965-12-30 1966-12-30 A Method for Manufacturing Black Heaters for Electron Valves. Expired GB1177489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUTA000875 1965-12-30

Publications (1)

Publication Number Publication Date
GB1177489A true GB1177489A (en) 1970-01-14

Family

ID=11001717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5839766A Expired GB1177489A (en) 1965-12-30 1966-12-30 A Method for Manufacturing Black Heaters for Electron Valves.

Country Status (4)

Country Link
DE (1) DE1521545A1 (en)
FR (1) FR1506958A (en)
GB (1) GB1177489A (en)
NL (1) NL6618454A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936367A (en) * 1973-12-22 1976-02-03 International Standard Electric Corporation Method of producing a layer of dark colored heat radiating insulating material for heaters of indirectly heated cathodes
US3940326A (en) * 1972-02-16 1976-02-24 Gte Sylvania Incorporated Method of coating cathode heaters

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19524750A1 (en) * 1995-07-07 1997-01-09 Forschungszentrum Juelich Gmbh Process for the electrophoretic coating of a carrier substrate
DE19837007C2 (en) * 1998-08-14 2003-07-03 Siemens Ag Method for producing a component of the vacuum housing of an electron tube formed from a metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940326A (en) * 1972-02-16 1976-02-24 Gte Sylvania Incorporated Method of coating cathode heaters
US3936367A (en) * 1973-12-22 1976-02-03 International Standard Electric Corporation Method of producing a layer of dark colored heat radiating insulating material for heaters of indirectly heated cathodes

Also Published As

Publication number Publication date
FR1506958A (en) 1967-12-22
DE1521545A1 (en) 1969-09-11
NL6618454A (en) 1967-07-03

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