GB769193A - Method of treating silver alloy electrode surfaces - Google Patents

Method of treating silver alloy electrode surfaces

Info

Publication number
GB769193A
GB769193A GB22947/52A GB2294752A GB769193A GB 769193 A GB769193 A GB 769193A GB 22947/52 A GB22947/52 A GB 22947/52A GB 2294752 A GB2294752 A GB 2294752A GB 769193 A GB769193 A GB 769193A
Authority
GB
United Kingdom
Prior art keywords
valve
silver
switch
electrode
opened
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
GB22947/52A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB769193A publication Critical patent/GB769193A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • 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
    • H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
    • H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/32—Secondary emission electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

769,193. Modifying metallic surfaces. STANDARD TELEPHONES & CABLES, Ltd. Sept. 12, 1952 [Sept. 21, 1951], No. 22947/52. Class 82(2) [Also in Group XL(a)] Silver alloy electrodes, particularly beryllium-silver and magnesium-silver electrodes, are heated at vacuo to a temperature above the oxidizing temperature range of silver, subjected at such temperature to an oxygen atmosphere containing ozone, and maintained at that temperature during removal of the oxygen atmosphere, the alloying metal thus being oxidized whilst the silver remains unoxidized. Secondary emisive electrode elements 2, 3 which may be electrodes of an electron multiplier amplifier, together with a target electrode 4, are mounted in a glass envelope 1 connected by tube 5 to an exhaust pump 6 through valve 9 and to an oxygen supply 8 through valve 10. A heating oven 11 may be lowered over the envelope. A high tension, high frequency supply source 13 is connected through switch 14 to the electrode 3 and to an additional electrode 12. With valve 9 and switch 14 open, the container 1 is evacuated and heated in oven 11 to 250‹C. or more e.g. 460‹C.: valve 9 is closed and valve 10 opened, oxygen being admitted to say 15 mm. of mercury: switch 14 is closed to maintain a brush discharge: after baking for say one hour, switch 14 is opened, valve 10 closed and valve 9 opened; after exhaustion, the container is allowed to cool.
GB22947/52A 1951-09-21 1952-09-12 Method of treating silver alloy electrode surfaces Expired GB769193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US769193XA 1951-09-21 1951-09-21

Publications (1)

Publication Number Publication Date
GB769193A true GB769193A (en) 1957-02-27

Family

ID=22134988

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22947/52A Expired GB769193A (en) 1951-09-21 1952-09-12 Method of treating silver alloy electrode surfaces

Country Status (1)

Country Link
GB (1) GB769193A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778244A (en) * 1955-04-21 1957-01-22 Leo W Cornwall Hydraulic power transmissions
US3331709A (en) * 1964-04-09 1967-07-18 Johnson Matthey Co Ltd Electrodes for electrolytic purposes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778244A (en) * 1955-04-21 1957-01-22 Leo W Cornwall Hydraulic power transmissions
US3331709A (en) * 1964-04-09 1967-07-18 Johnson Matthey Co Ltd Electrodes for electrolytic purposes

Similar Documents

Publication Publication Date Title
GB607149A (en) Improvements in and relating to electron discharge tubes
GB810301A (en) Improvements in electrodes for fluorescent electric discharge lamps
GB769193A (en) Method of treating silver alloy electrode surfaces
ES435720A1 (en) Method of degassing a cathode-ray tube prior to sealing
GB411669A (en) Improvements in and relating to gaseous electric discharge devices
GB652742A (en) Gaseous electron discharge device
GB642755A (en) Improvements in or relating to the manufacture of oxide cathodes for electric discharge tubes
US2102760A (en) Photoelectric tube
US2462245A (en) Space discharge device
GB345375A (en) Improvements in the manufacture of photoelectric cathodes
GB569346A (en) Improvements in and relating to the decomposition of chemical compounds by electronic bombardment
US2431402A (en) Photoube and method of manufacture
GB559591A (en) Improvements relating to secondary electron emissive electrodes
GB352756A (en) Improvements in and relating to gaseous electric discharge devices
GB824902A (en) Improvements in cathodes and emissive material therefor
GB886429A (en) Improvements in or relating to non-consumable high vacuum arc furnace electrodes
GB779095A (en) Improvements relating to cathodes for electric discharge devices
GB930946A (en) Sealing arrangement for electron discharge devices
GB416703A (en) Improvements in or relating to the manufacture of photo-electric cells
GB729921A (en) Improvements in and relating to tungsten cathodes
ES236527A2 (en) Improvements introduced in the manufacture of cold electrodes t hollow for electrical discharge apparatus (Machine-translation by Google Translate, not legally binding)
GB651255A (en) Electric discharge tube
GB806032A (en) A process for the production of a hot cathode for thermionic tubes
GB664112A (en) Improvements relating to photo-typecomposing apparatus and teleprinting apparatus
GB431763A (en) Improvements in and relating to electric discharge devices