DE60200032D1 - Zugabe von Bor bei der Herstellung von mit Kalium dotiertem Wolframpulver - Google Patents

Zugabe von Bor bei der Herstellung von mit Kalium dotiertem Wolframpulver

Info

Publication number
DE60200032D1
DE60200032D1 DE60200032T DE60200032T DE60200032D1 DE 60200032 D1 DE60200032 D1 DE 60200032D1 DE 60200032 T DE60200032 T DE 60200032T DE 60200032 T DE60200032 T DE 60200032T DE 60200032 D1 DE60200032 D1 DE 60200032D1
Authority
DE
Germany
Prior art keywords
potassium
tungsten powder
doped tungsten
boron
addition
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 - Lifetime
Application number
DE60200032T
Other languages
English (en)
Other versions
DE60200032T2 (de
Inventor
Dr Lunk
Anna S Nached
Dr Salmen
Henry J Stevens
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.)
Osram Sylvania Inc
Original Assignee
Osram 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 Osram Sylvania Inc filed Critical Osram Sylvania Inc
Publication of DE60200032D1 publication Critical patent/DE60200032D1/de
Application granted granted Critical
Publication of DE60200032T2 publication Critical patent/DE60200032T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C22C1/045—Alloys based on refractory metals
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G41/00—Compounds of tungsten
    • C01G41/006—Compounds containing, besides tungsten, two or more other elements, with the exception of oxygen or hydrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C01P2002/52—Solid solutions containing elements as dopants
    • C01P2002/54—Solid solutions containing elements as dopants one element only
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Ceramic Products (AREA)
  • Electroluminescent Light Sources (AREA)
  • Luminescent Compositions (AREA)
DE60200032T 2001-07-09 2002-05-29 Zugabe von Bor bei der Herstellung von mit Kalium dotiertem Wolframpulver Expired - Lifetime DE60200032T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US902353 2001-07-09
US09/902,353 US6478845B1 (en) 2001-07-09 2001-07-09 Boron addition for making potassium-doped tungsten

Publications (2)

Publication Number Publication Date
DE60200032D1 true DE60200032D1 (de) 2003-10-23
DE60200032T2 DE60200032T2 (de) 2004-05-13

Family

ID=25415743

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60200032T Expired - Lifetime DE60200032T2 (de) 2001-07-09 2002-05-29 Zugabe von Bor bei der Herstellung von mit Kalium dotiertem Wolframpulver

Country Status (8)

Country Link
US (1) US6478845B1 (de)
EP (1) EP1275742B1 (de)
JP (1) JP4118620B2 (de)
CN (1) CN1229198C (de)
AT (1) ATE250147T1 (de)
DE (1) DE60200032T2 (de)
HU (1) HUP0202210A3 (de)
TW (1) TW567105B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004049039B4 (de) * 2004-10-08 2009-05-07 H.C. Starck Gmbh Verfahren zur Herstellung feinteiliger Ventilmetallpulver
CN1297486C (zh) * 2005-04-01 2007-01-31 北京科技大学 一种纳米级钨粉的制备方法
CN100453215C (zh) * 2005-10-11 2009-01-21 自贡硬质合金有限责任公司 含钾金属钨条的生产方法
JP5613861B2 (ja) * 2012-06-22 2014-10-29 昭和電工株式会社 固体電解コンデンサの陽極体
CN108274017A (zh) * 2018-03-14 2018-07-13 自贡硬质合金有限责任公司 一种掺钾金属钨板及其制备方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT285185B (de) * 1968-12-23 1970-10-12 Plansee Metallwerk Gesinterte Wolframlegierung
US3773493A (en) * 1971-12-22 1973-11-20 Westinghouse Electric Corp Method of producing doped tungsten powders by chemical deposition
US4123833A (en) * 1977-10-13 1978-11-07 Westinghouse Electric Corp. Method of producing doped tungsten filaments by ion-implantation
AT392432B (de) * 1989-05-03 1991-03-25 Plansee Metallwerk Verfahren zur herstellung von warmkriechfesten halbfabrikaten oder formteilen aus hochschmelzenden metallen
DE19607355C2 (de) 1995-03-03 2001-10-18 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur Herstellung von Wolframdraht, Wolframdraht und Glühlampe mit einem solchen Wolframdraht
DE19607356C2 (de) 1995-03-03 2001-09-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur Erzeugung eines vibrations- und durchhangarmen Wolframdrahtes, Wolframdraht und Glühlampe mit einem solchen Wolframdraht
US6129890A (en) 1999-09-07 2000-10-10 Osram Sylvania Inc. Method of making non-sag tungsten wire
US6165412A (en) 1999-09-07 2000-12-26 Osram Sylvania Inc. Method of making non-sag tungsten wire for electric lamps

Also Published As

Publication number Publication date
ATE250147T1 (de) 2003-10-15
HU0202210D0 (de) 2002-09-28
HUP0202210A3 (en) 2004-03-01
DE60200032T2 (de) 2004-05-13
JP2003105412A (ja) 2003-04-09
CN1229198C (zh) 2005-11-30
EP1275742A1 (de) 2003-01-15
TW567105B (en) 2003-12-21
HUP0202210A2 (hu) 2003-03-28
CN1396028A (zh) 2003-02-12
JP4118620B2 (ja) 2008-07-16
US6478845B1 (en) 2002-11-12
EP1275742B1 (de) 2003-09-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition