GB553832A - Improvements in and relating to thermionic cathodes - Google Patents

Improvements in and relating to thermionic cathodes

Info

Publication number
GB553832A
GB553832A GB1558141A GB1558141A GB553832A GB 553832 A GB553832 A GB 553832A GB 1558141 A GB1558141 A GB 1558141A GB 1558141 A GB1558141 A GB 1558141A GB 553832 A GB553832 A GB 553832A
Authority
GB
United Kingdom
Prior art keywords
alloy
relating
heating
thermionic cathodes
thermionic
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
GB1558141A
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.)
CECIL HEDWORTH MAYER
Original Assignee
CECIL HEDWORTH MAYER
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 CECIL HEDWORTH MAYER filed Critical CECIL HEDWORTH MAYER
Priority to GB1558141A priority Critical patent/GB553832A/en
Publication of GB553832A publication Critical patent/GB553832A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

553,832. Thermionic cathodes. BARTON, F., and MAYER, C. H. Dec. 3, 1941, No. 15581. [Class 39 (i)] A thermionic cathode is formed by applying to a refractory core such as tungsten, molybdenum, tantalum or an alloy, at least two successive coatings of different metals, heating in an inert gas to alloy these metals, and finally coating with a rare-earth compound. The coatings may be copper and nickel and if a third layer such as chromium is deposited, the heating may take place in two stages. The coating may be electrolytic.
GB1558141A 1941-12-03 1941-12-03 Improvements in and relating to thermionic cathodes Expired GB553832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1558141A GB553832A (en) 1941-12-03 1941-12-03 Improvements in and relating to thermionic cathodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1558141A GB553832A (en) 1941-12-03 1941-12-03 Improvements in and relating to thermionic cathodes

Publications (1)

Publication Number Publication Date
GB553832A true GB553832A (en) 1943-06-08

Family

ID=10061680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1558141A Expired GB553832A (en) 1941-12-03 1941-12-03 Improvements in and relating to thermionic cathodes

Country Status (1)

Country Link
GB (1) GB553832A (en)

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