GB639044A - Improvements in or relating to electric discharge and electrodes therefor - Google Patents

Improvements in or relating to electric discharge and electrodes therefor

Info

Publication number
GB639044A
GB639044A GB31915/46A GB3191546A GB639044A GB 639044 A GB639044 A GB 639044A GB 31915/46 A GB31915/46 A GB 31915/46A GB 3191546 A GB3191546 A GB 3191546A GB 639044 A GB639044 A GB 639044A
Authority
GB
United Kingdom
Prior art keywords
relating
electric discharge
electrode
titanium
alloy
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
GB31915/46A
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 Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB639044A publication Critical patent/GB639044A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture

Landscapes

  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

A non-emitting electrode for an electric-discharge tube is made of an alloy of iron with not more than 7 per cent of titanium and is heated for a short time, before or after being mounted in the tube, in a nonoxidizing or slightly reducing atmosphere to produce a coating of a thin black layer of titanium oxide. The production is described of an electrode from an alloy of iron with 2 per cent of titanium, the electrode being heated for 20 minutes in an atmosphere consisting mainly of a mixture of one part of hydrogen with four parts of nitrogen.
GB31915/46A 1943-03-10 1946-10-28 Improvements in or relating to electric discharge and electrodes therefor Expired GB639044A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL639044X 1943-03-10

Publications (1)

Publication Number Publication Date
GB639044A true GB639044A (en) 1950-06-21

Family

ID=19788952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31915/46A Expired GB639044A (en) 1943-03-10 1946-10-28 Improvements in or relating to electric discharge and electrodes therefor

Country Status (1)

Country Link
GB (1) GB639044A (en)

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