GB533213A - Improvements in or relating to the production of insulating films on metal surfaces - Google Patents

Improvements in or relating to the production of insulating films on metal surfaces

Info

Publication number
GB533213A
GB533213A GB1978339A GB1978339A GB533213A GB 533213 A GB533213 A GB 533213A GB 1978339 A GB1978339 A GB 1978339A GB 1978339 A GB1978339 A GB 1978339A GB 533213 A GB533213 A GB 533213A
Authority
GB
United Kingdom
Prior art keywords
film
produced
underlying
films
baking
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
GB1978339A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1978339A priority Critical patent/GB533213A/en
Publication of GB533213A publication Critical patent/GB533213A/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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/43—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

533,213. Cathode-ray tubes. HOLMAN, H. E. July 7, 1939, No. 19783. Drawings to Specification. [Class 39 (i)] [Also in Group XXXVI] Insulating films are produced on the surfaces of metallic plates or grids, such as the " signal " plate of a television transmitter tube, by electrolytically coating the aluminium, aluminium alloy, or other metal with an oxide film, baking the film, and again electrolysing to produce a second oxide film filling the cracks produced by the baking and also underlying the first film. Subsequent heating of the conductor may cause further cracking, particularly of the underlying film, but such cracks will not in general coincide with those in the outermost layer. Further underlying films may be similarly provided. The films are produced by anodic coating in a bath of 3 to 4 per cent chromium trioxide, using graphite cathodes, the conductor being first heated, polished, immersed in carbon tetrachloride to free it from grease, washed in soap solution and finally in water. Specifications 397,538, 409,679, and 479,401, [all in Group XXXVI], are referred to.
GB1978339A 1939-07-07 1939-07-07 Improvements in or relating to the production of insulating films on metal surfaces Expired GB533213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1978339A GB533213A (en) 1939-07-07 1939-07-07 Improvements in or relating to the production of insulating films on metal surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1978339A GB533213A (en) 1939-07-07 1939-07-07 Improvements in or relating to the production of insulating films on metal surfaces

Publications (1)

Publication Number Publication Date
GB533213A true GB533213A (en) 1941-02-10

Family

ID=10135139

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1978339A Expired GB533213A (en) 1939-07-07 1939-07-07 Improvements in or relating to the production of insulating films on metal surfaces

Country Status (1)

Country Link
GB (1) GB533213A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785116A (en) * 1954-01-25 1957-03-12 Gen Electric Method of making capacitor electrodes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785116A (en) * 1954-01-25 1957-03-12 Gen Electric Method of making capacitor electrodes

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