GB545926A - Improvements in or relating to electric discharge tubes - Google Patents

Improvements in or relating to electric discharge tubes

Info

Publication number
GB545926A
GB545926A GB1155741A GB1155741A GB545926A GB 545926 A GB545926 A GB 545926A GB 1155741 A GB1155741 A GB 1155741A GB 1155741 A GB1155741 A GB 1155741A GB 545926 A GB545926 A GB 545926A
Authority
GB
United Kingdom
Prior art keywords
per cent
nickel
tungsten
molybdenum
aluminium
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
GB1155741A
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.)
Koninklijke Philips NV
Original Assignee
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB1155741A priority Critical patent/GB545926A/en
Publication of GB545926A publication Critical patent/GB545926A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details 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
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • H01J1/20Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/26Supports for the emissive material

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

545,926. Tungsten or molybdenum alloys. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips'. Gloeilampenfabrieken). Sept. 9, 1941, No. 11557. [Class 82 (i)] [Also in Group XL] For use in an electric discharge tube, an independently heated cathode, which may be made by rolling one or more thin plates until a tubular body is obtained, and may be directly supported in an aperture of a mica or like plate, comprises an outer layer of nickel, copper, or the like on an inner layer consisting of an alloy of tungsten or molybdenum with one or two of the metals nickel, cobalt, and iron, with or without one or more of the elements aluminium, silicon, manganese, magnesium, zirconium, and thorium, the proportion of tungsten or molybdenum being respectively 10-25 and 10-35 atoms per cent. in alloys consisting of two components only and respectively 5-25 and 5-35 atoms per cent. in alloys consisting of more than two components. Specific examples consist of, by weight, (a)' 63 per cent. of nickel and 37 per cent. of tungsten; (b) 75.5 per cent. of nickel 20.5 per cent. of molybdenum, and 4 per cent. of aluminium; (c) 65 per cent. of nickel, 21 per cent. of molybdenum and 14 per cent. of iron; (d) 59.5 per cent. of nickel, 38 per cent. of tungsten and 2.5 per cent. of aluminium.
GB1155741A 1941-09-09 1941-09-09 Improvements in or relating to electric discharge tubes Expired GB545926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1155741A GB545926A (en) 1941-09-09 1941-09-09 Improvements in or relating to electric discharge tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1155741A GB545926A (en) 1941-09-09 1941-09-09 Improvements in or relating to electric discharge tubes

Publications (1)

Publication Number Publication Date
GB545926A true GB545926A (en) 1942-06-18

Family

ID=9988430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1155741A Expired GB545926A (en) 1941-09-09 1941-09-09 Improvements in or relating to electric discharge tubes

Country Status (1)

Country Link
GB (1) GB545926A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374385A (en) * 1963-07-10 1968-03-19 Rca Corp Electron tube cathode with nickel-tungsten alloy base and thin nickel coating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374385A (en) * 1963-07-10 1968-03-19 Rca Corp Electron tube cathode with nickel-tungsten alloy base and thin nickel coating

Similar Documents

Publication Publication Date Title
GB440810A (en) Cathode ray tube
GB545926A (en) Improvements in or relating to electric discharge tubes
GB524113A (en) Magnesium alloy
GB472859A (en) Improvements in or relating to electron discharge devices such as television image dissectors
GB553084A (en) Improvements in or relating to x-ray tubes
GB595531A (en) Aluminium base alloys
GB526731A (en) Improvements in secondary emissive electrodes
GB488926A (en) Improvements in and relating to heat resistant alloys and articles comprising the same
GB507167A (en) Improvements relating to alloys, particularly for resistance wire for electric fires, heaters and the like
GB534154A (en) Improvements in or relating to cathodes for electron discharge devices
GB470234A (en) Improvements in carbon-coated electrodes or the like in electric discharge tubes
GB642364A (en) Improvements in or relating to indirectly heated cathodes
GB561592A (en) Improvements in or relating to alloys particularly for the production of alloy steels
GB563617A (en) Improvements in or relating to aluminium base alloys
GB553832A (en) Improvements in and relating to thermionic cathodes
GB481256A (en) Improvements in or relating to mercury cathode discharge tubes
GB866194A (en) Improvements in indirectly-heated nickel alloy cathodes
GB507382A (en) Improved circuit-arrangement comprising an electric gas-discharge tube
GB477262A (en) Improvements in or relating to electric discharge tubes comprising secondary-emission electrodes
GB561407A (en) Improvements in or relating to alloys particularly used for the production of alloy steels
GB587931A (en) Improvements in or relating to electrodes for electron discharge devices and alloys for use therein
GB599788A (en) Improvements in or relating to alloys
GB397132A (en) Improvements in oxide coated thermionic cathodes
GB436712A (en) Improvements in or relating to indirectly heated cathode structures and electron discharge devices incorporating the same
GB492385A (en) Improvements in and relating to electric discharge devices