GB1366007A - Heater for electron discharge device - Google Patents

Heater for electron discharge device

Info

Publication number
GB1366007A
GB1366007A GB3266572A GB3266572A GB1366007A GB 1366007 A GB1366007 A GB 1366007A GB 3266572 A GB3266572 A GB 3266572A GB 3266572 A GB3266572 A GB 3266572A GB 1366007 A GB1366007 A GB 1366007A
Authority
GB
United Kingdom
Prior art keywords
coated
heater
discharge device
oxide
electron discharge
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
GB3266572A
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.)
GTE Sylvania Inc
Original Assignee
GTE Sylvania Inc
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 GTE Sylvania Inc filed Critical GTE Sylvania Inc
Publication of GB1366007A publication Critical patent/GB1366007A/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/22—Heaters
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/61—Coating or impregnation
    • C04B41/70—Coating or impregnation for obtaining at least two superposed coatings having different compositions
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/88—Metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

1366007 Coated particles; coated wire GTE SYLVANIA INC 12 July 1972 [15 July 1971 (2)] 32665/72 Heading B2E [Also in Divisions C7 and H1] Particles of Al, Be or Zr oxides are coated with W using a W resinate, and then coated with Pt or Ir or Al or Zr oxide. The tungsten resinate is heated to 500 to 550‹C to form tungsten oxide and then heated to 875‹C to reduce the oxide to W. The Pt may also be applied from a resinate. The particles may be formed into a suspension with butyl acetate and nitrocellulose and applied to an aluminium oxide (Al 2 O 3 ) coated Mo or W wire to form a heater for an electron discharge device.
GB3266572A 1971-07-15 1972-07-12 Heater for electron discharge device Expired GB1366007A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16305071A 1971-07-15 1971-07-15
US16299271A 1971-07-15 1971-07-15

Publications (1)

Publication Number Publication Date
GB1366007A true GB1366007A (en) 1974-09-04

Family

ID=26859230

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3266572A Expired GB1366007A (en) 1971-07-15 1972-07-12 Heater for electron discharge device

Country Status (2)

Country Link
AU (1) AU4460172A (en)
GB (1) GB1366007A (en)

Also Published As

Publication number Publication date
AU4460172A (en) 1974-01-17

Similar Documents

Publication Publication Date Title
AU463352B2 (en) Cathode-ray tube having conductive internal coating comprised of iron oxide and graphite
GB922440A (en) Cathode heater for electron discharge devices
GB1025673A (en) An anode for a high-pressure discharge lamp
GB1402739A (en) Corona generator
GB1366007A (en) Heater for electron discharge device
IL36818A (en) Process for the preparation of finely-divided metal oxide and sintered objects produced therefrom
CA1000044A (en) Method of manufacturing an oxide of yttrium and/or lanthanum and/or the lanthanides
GB1414400A (en) Method for making a silicon electron emitter
GB1313630A (en) Sealing alloy
GB1199695A (en) Hydroxyindan Compound and process for the manufacture thereof
CA1021385A (en) Crt comprising strontium metal getter films and method of preparation
CA933516A (en) Cyclic ethers of cardenolide digitoxosides, process therefor and compositions thereof
GB1478437A (en) Ferromagnetic printing paste
CA1028491A (en) Thermionic emitter of lanthanum strontium vanadates
CA963203A (en) Fluorescent tube coating composition and process therefor
GB1023260A (en) Improvements in or relating to methods of producing semiconductive materials and semiconductor elements made from such material
GB1377048A (en) Method of manufacturing an electric discharge tube
GB616487A (en) Improvements in or relating to electron emission filaments
CA883818A (en) 4-CHLORO-1,2.alpha.-METHYLENE-.DELTA.4,6-PREGNADIEN-17.alpha.-O1-3,20-DIONE AND ITS 17-ESTERS
IL36164A (en) Process for the preparation of 17alpha-hydroxy-pregna-4,9(11)-diene-3,20-dione and some new intermediates
CA862092A (en) 2.alpha.-CYANO-4.alpha., 5.alpha.-EPOXY-3-OXO ANDROSTANE STEROIDS AND THEIR PREPARATION
CA567284A (en) Electron emission coatings and method of preparing air stabilized barium oxide
CA844607A (en) 7.alpha.-METHYL STEROIDS OF THE ANDROSTANE AND 19-NOR-ANDROSTANE SERIES AND PROCESSES OF PREPARING SAME
GB614105A (en) Improvements in or relating to electron tubes and method of making same
CA876901A (en) Metal halide discharge lamps with rare-earth metal oxide used as electrode emission material

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees