GB923112A - Improvements in or relating to oxide cathodes - Google Patents

Improvements in or relating to oxide cathodes

Info

Publication number
GB923112A
GB923112A GB2690360A GB2690360A GB923112A GB 923112 A GB923112 A GB 923112A GB 2690360 A GB2690360 A GB 2690360A GB 2690360 A GB2690360 A GB 2690360A GB 923112 A GB923112 A GB 923112A
Authority
GB
United Kingdom
Prior art keywords
microns
aug
grain
layer
size
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
GB2690360A
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 Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB923112A publication Critical patent/GB923112A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/14—Solid thermionic cathodes characterised by the material

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

923,112. Cathode materials. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 3, 1960 [Aug. 6, 1959], No. 26903/60. Class 39 (1). In manufacture of an oxide cathode, a layer of alkaline-earth carbonates to which has been added a metallic powder, including manganese in the non-oxidized state, is provided on a carrier consisting substantially of nickel. For example, a layer 40 microns thick of bariumstrontium carbonate, having a grain-size of 20 microns, and containing 0.5 to 3% by weight of a powdered alloy of 70% manganese and 30% titanium having a grain-size of 10 microns, is sprayed on to a cathode tube of nickel containing 0.1% Si and 0.05% Mg.
GB2690360A 1959-08-06 1960-08-03 Improvements in or relating to oxide cathodes Expired GB923112A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL242086 1959-08-06

Publications (1)

Publication Number Publication Date
GB923112A true GB923112A (en) 1963-04-10

Family

ID=19751861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2690360A Expired GB923112A (en) 1959-08-06 1960-08-03 Improvements in or relating to oxide cathodes

Country Status (2)

Country Link
DE (1) DE1117779B (en)
GB (1) GB923112A (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE659437C (en) * 1934-10-26 1938-05-03 Siemens & Halske Akt Ges Process for the manufacture of oxide cathodes
DE747340C (en) * 1938-03-29 1952-12-22 Siemens & Halske A G Oxide cathode, the oxide layer of which is in contact with small amounts of metallic tantalum
DE956256C (en) * 1953-05-31 1957-01-17 Siemens Ag Process to increase the layer conductivity of oxide cathodes
US2830917A (en) * 1954-06-07 1958-04-15 Bell Telephone Labor Inc Cathode for electron discharge devices
DE1061909B (en) * 1955-09-12 1959-07-23 Gen Electric Carrier metal for directly or indirectly heated cathodes for electrical discharge vessels

Also Published As

Publication number Publication date
DE1117779B (en) 1961-11-23

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