DE69904757D1 - METHOD FOR PRODUCING SINTERABLE METAL POWDER FROM TUNGSTEN AND COPPER - Google Patents

METHOD FOR PRODUCING SINTERABLE METAL POWDER FROM TUNGSTEN AND COPPER

Info

Publication number
DE69904757D1
DE69904757D1 DE69904757T DE69904757T DE69904757D1 DE 69904757 D1 DE69904757 D1 DE 69904757D1 DE 69904757 T DE69904757 T DE 69904757T DE 69904757 T DE69904757 T DE 69904757T DE 69904757 D1 DE69904757 D1 DE 69904757D1
Authority
DE
Germany
Prior art keywords
tungsten
copper
metal powder
reduction
temperature
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
DE69904757T
Other languages
German (de)
Inventor
Gualtiero Gusmano
Alessandra Bianco
Riccardo Polini
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.)
CELSIA SpA
Original Assignee
CELSIA SpA
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 CELSIA SpA filed Critical CELSIA SpA
Application granted granted Critical
Publication of DE69904757D1 publication Critical patent/DE69904757D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/17—Metallic particles coated with metal
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material

Abstract

Method for the production of a composite powder consisting of finely interspersed tungsten and copper, which powder can be directly pressed and sintered to provide products having density values exceeding 96 % with respect to the theoretical one and high values for electrical and thermal conductivity, the method essentially comprising the reduction of a copper precursor in the presence of tungsten metal suspended in an organic liquid phase produced by one or a mixture of polyols. The reaction is carried out by heating the suspension to a temperature of at least 60 DEG C and keeping it at a such temperature for a sufficient time to bring about the reduction of the copper precursor by means of the organic phase and tungsten therein.
DE69904757T 1998-12-16 1999-10-12 METHOD FOR PRODUCING SINTERABLE METAL POWDER FROM TUNGSTEN AND COPPER Expired - Lifetime DE69904757D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998RM000776A IT1302926B1 (en) 1998-12-16 1998-12-16 PROCEDURE FOR THE PRODUCTION OF TUNGSTEN-RAMESINTERIZABLE COMPOSITE POWDERS.
PCT/IT1999/000321 WO2000035616A1 (en) 1998-12-16 1999-10-12 Process for the production of tungsten-copper composite sinterable powders

Publications (1)

Publication Number Publication Date
DE69904757D1 true DE69904757D1 (en) 2003-02-06

Family

ID=11406255

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69904757T Expired - Lifetime DE69904757D1 (en) 1998-12-16 1999-10-12 METHOD FOR PRODUCING SINTERABLE METAL POWDER FROM TUNGSTEN AND COPPER

Country Status (7)

Country Link
EP (1) EP1140397B1 (en)
AT (1) ATE230321T1 (en)
AU (1) AU1073800A (en)
CZ (1) CZ20012180A3 (en)
DE (1) DE69904757D1 (en)
IT (1) IT1302926B1 (en)
WO (1) WO2000035616A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10041194A1 (en) 2000-08-23 2002-03-07 Starck H C Gmbh Process for the production of composite components by powder injection molding and suitable composite powder
WO2004065042A2 (en) * 2003-01-21 2004-08-05 Osram Sylvania Inc. Electrochemical displacement-deposition method for making composite metal powders
CN102554218A (en) * 2011-11-23 2012-07-11 西安理工大学 Method for preparing tungsten-copper composite powder by means of electroless copper plating
CN104722753B (en) * 2015-03-24 2017-01-18 中国石油集团川庆钻探工程有限公司 Preparing method of tungsten copper powder for perforating bullet type cover
US10737248B2 (en) * 2018-06-26 2020-08-11 Uop Llc Crystalline transition metal tungstate
CN113020588B (en) * 2021-02-26 2023-02-24 西安稀有金属材料研究院有限公司 Preparation method of graphene oxide doped tungsten-copper core-shell structure material
CN113523295B (en) * 2021-07-20 2023-01-17 天津大学 Preparation method of copper-coated tungsten spherical composite powder for additive manufacturing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2537898A1 (en) * 1982-12-21 1984-06-22 Univ Paris METHOD FOR REDUCING METAL COMPOUNDS BY THE POLYOLS, AND METAL POWDERS OBTAINED BY THIS PROCESS
GB2236117A (en) * 1989-09-20 1991-03-27 Shell Int Research Process for preparing silver powder
US5439638A (en) * 1993-07-16 1995-08-08 Osram Sylvania Inc. Method of making flowable tungsten/copper composite powder
FR2723015B1 (en) * 1994-07-29 1996-09-13 Commissariat Energie Atomique PROCESS FOR OBTAINING IRON OR IRON POWDERS BY ORGANIC LIQUID PHASE PRECIPITATION
US5759230A (en) * 1995-11-30 1998-06-02 The United States Of America As Represented By The Secretary Of The Navy Nanostructured metallic powders and films via an alcoholic solvent process

Also Published As

Publication number Publication date
EP1140397B1 (en) 2003-01-02
AU1073800A (en) 2000-07-03
EP1140397A1 (en) 2001-10-10
IT1302926B1 (en) 2000-10-10
ATE230321T1 (en) 2003-01-15
CZ20012180A3 (en) 2002-03-13
WO2000035616A1 (en) 2000-06-22
ITRM980776A1 (en) 2000-06-16

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