GB1254259A - Electric discharge tube having a graphite-containing conductive wall coating - Google Patents

Electric discharge tube having a graphite-containing conductive wall coating

Info

Publication number
GB1254259A
GB1254259A GB2682670A GB2682670A GB1254259A GB 1254259 A GB1254259 A GB 1254259A GB 2682670 A GB2682670 A GB 2682670A GB 2682670 A GB2682670 A GB 2682670A GB 1254259 A GB1254259 A GB 1254259A
Authority
GB
United Kingdom
Prior art keywords
graphite
discharge tube
boehmite
electric discharge
containing conductive
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
GB2682670A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1254259A publication Critical patent/GB1254259A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/20—Materials for coating a single layer on glass
    • C03C2217/29—Mixtures
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/10—Deposition methods
    • C03C2218/11—Deposition methods from solutions or suspensions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

1,254,259. Coated tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 3 June, 1970 [5 June, 1969], No. 26826/70. Heading B2E. [Also in Division H1] A conductive layer on the inner surface of a discharge tube consists of a mixture of graphite and aluminium oxide. The coating may be obtained by adding an aqueous suspension of boehmite (AlOOH) to dry graphite in vacuum in the proportions 15 parts graphite : 15 parts boehmite : 70 parts water. After thorough stirring for two hours the graphite suspension is sprayed onto the inner surface of the tube and the tube is subjected to a number of firing operations up to a temperature of 450‹C. Aluminium hydroxide may replace the boehmite.
GB2682670A 1969-06-05 1970-06-03 Electric discharge tube having a graphite-containing conductive wall coating Expired GB1254259A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6908599A NL6908599A (en) 1969-06-05 1969-06-05

Publications (1)

Publication Number Publication Date
GB1254259A true GB1254259A (en) 1971-11-17

Family

ID=19807120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2682670A Expired GB1254259A (en) 1969-06-05 1970-06-03 Electric discharge tube having a graphite-containing conductive wall coating

Country Status (4)

Country Link
DE (1) DE2027264A1 (en)
FR (1) FR2049994A5 (en)
GB (1) GB1254259A (en)
NL (1) NL6908599A (en)

Also Published As

Publication number Publication date
FR2049994A5 (en) 1971-03-26
NL6908599A (en) 1970-12-08
DE2027264A1 (en) 1970-12-10

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