GB797998A - Alloy for vacuum-tube cathodes - Google Patents

Alloy for vacuum-tube cathodes

Info

Publication number
GB797998A
GB797998A GB37073/55A GB3707355A GB797998A GB 797998 A GB797998 A GB 797998A GB 37073/55 A GB37073/55 A GB 37073/55A GB 3707355 A GB3707355 A GB 3707355A GB 797998 A GB797998 A GB 797998A
Authority
GB
United Kingdom
Prior art keywords
rhenium
alloy
cathodes
thickness
produced
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
GB37073/55A
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.)
CHARLES BERTOLUS ETS
Original Assignee
CHARLES BERTOLUS ETS
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 CHARLES BERTOLUS ETS filed Critical CHARLES BERTOLUS ETS
Publication of GB797998A publication Critical patent/GB797998A/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

  • Powder Metallurgy (AREA)

Abstract

Electrically conductive cores for thermionically active cathodes having alkaline earth oxide coatings comprise an alloy of composition within the range; Re 1-30 per cent; Ni the balance. The Specification refers to experiments conducted with nickel discs coated with rhenium, to a thickness of at least 10 microns, the coating being produced by thermal dissociation of rhenium trichloride on nickel discs heated to 1400 DEG C., and with rhenium cathodes produced by sintering rhenium powder and reducing in size by successive rolling and annealing at 1750 DEG C to a thickness of 0.2 mm.
GB37073/55A 1954-12-24 1955-12-28 Alloy for vacuum-tube cathodes Expired GB797998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1117317T 1954-12-24

Publications (1)

Publication Number Publication Date
GB797998A true GB797998A (en) 1958-07-09

Family

ID=9629975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37073/55A Expired GB797998A (en) 1954-12-24 1955-12-28 Alloy for vacuum-tube cathodes

Country Status (2)

Country Link
FR (1) FR1117317A (en)
GB (1) GB797998A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104693A (en) * 1976-03-23 1978-08-01 Reliable Electric Company Gas filled surge arrester
FR2401230A1 (en) * 1977-08-27 1979-03-23 Ngk Spark Plug Co NICKEL-BASED ALLOY SUITABLE PARTICULARLY FOR THE HEATING ELEMENT OF AN INCANDESCENT CANDLE
GB2018017A (en) * 1978-03-31 1979-10-10 Hitachi Ltd Cathode base alloy materials

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD3081G2 (en) * 2006-02-09 2007-01-31 Институт Прикладной Физики Академии Наук Молдовы Alloy on base of nickel
MD4269C1 (en) * 2012-10-15 2014-08-31 Институт Прикладной Физики Академии Наук Молдовы Nickel-based alloy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104693A (en) * 1976-03-23 1978-08-01 Reliable Electric Company Gas filled surge arrester
FR2401230A1 (en) * 1977-08-27 1979-03-23 Ngk Spark Plug Co NICKEL-BASED ALLOY SUITABLE PARTICULARLY FOR THE HEATING ELEMENT OF AN INCANDESCENT CANDLE
GB2018017A (en) * 1978-03-31 1979-10-10 Hitachi Ltd Cathode base alloy materials

Also Published As

Publication number Publication date
FR1117317A (en) 1956-05-22

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