NL7006064A - Tungsten alloy for electric light bulbs - Google Patents

Tungsten alloy for electric light bulbs

Info

Publication number
NL7006064A
NL7006064A NL7006064A NL7006064A NL7006064A NL 7006064 A NL7006064 A NL 7006064A NL 7006064 A NL7006064 A NL 7006064A NL 7006064 A NL7006064 A NL 7006064A NL 7006064 A NL7006064 A NL 7006064A
Authority
NL
Netherlands
Prior art keywords
electric light
light bulbs
tungsten alloy
mixture
produced
Prior art date
Application number
NL7006064A
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 filed Critical
Priority to NL7006064A priority Critical patent/NL7006064A/en
Publication of NL7006064A publication Critical patent/NL7006064A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/36—Obtaining tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0031—Matrix based on refractory metals, W, Mo, Nb, Hf, Ta, Zr, Ti, V or alloys thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

The alloy is produced by (a) adding 0.01-2.0% wt Al2O3, SiO2 and/or K2O, and 0.005-0.5% wt Co and/or Sn to tungsten powder, (b) homogenising the mixture, and (c) reducing the mixture in a reducing atmosphere to give a reduced powder. It is used for the prodn. of wire or plate for electric light bulbs, and cathode tubes. It has a good ductility and flexibility both before and after recrystallisation. Incandescent lamps produced from these materials have good emission props. and are vibration resistant, so that they can be used for head lamps of automobiles.
NL7006064A 1970-04-27 1970-04-27 Tungsten alloy for electric light bulbs NL7006064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7006064A NL7006064A (en) 1970-04-27 1970-04-27 Tungsten alloy for electric light bulbs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7006064A NL7006064A (en) 1970-04-27 1970-04-27 Tungsten alloy for electric light bulbs

Publications (1)

Publication Number Publication Date
NL7006064A true NL7006064A (en) 1971-10-29

Family

ID=19809956

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7006064A NL7006064A (en) 1970-04-27 1970-04-27 Tungsten alloy for electric light bulbs

Country Status (1)

Country Link
NL (1) NL7006064A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed