EP1043411B1 - Procédé de préparation d'un matériau composite métallique - Google Patents

Procédé de préparation d'un matériau composite métallique Download PDF

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Publication number
EP1043411B1
EP1043411B1 EP00105246A EP00105246A EP1043411B1 EP 1043411 B1 EP1043411 B1 EP 1043411B1 EP 00105246 A EP00105246 A EP 00105246A EP 00105246 A EP00105246 A EP 00105246A EP 1043411 B1 EP1043411 B1 EP 1043411B1
Authority
EP
European Patent Office
Prior art keywords
solution
powder
water
hard constituent
metal
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
EP00105246A
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German (de)
English (en)
Other versions
EP1043411A3 (fr
EP1043411A2 (fr
Inventor
Mats Waldenström
Rolf Svensson
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.)
Sandvik Intellectual Property AB
Original Assignee
Sandvik Intellectual Property AB
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 Sandvik Intellectual Property AB filed Critical Sandvik Intellectual Property AB
Publication of EP1043411A2 publication Critical patent/EP1043411A2/fr
Publication of EP1043411A3 publication Critical patent/EP1043411A3/fr
Application granted granted Critical
Publication of EP1043411B1 publication Critical patent/EP1043411B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Definitions

  • the present invention relates to a method of producing metal composite materials such as cemented carbide.
  • Hard constituent powder and, optionally, a soluble carbon source are added to the solution.
  • the solvent is evaporated and remaining powder is heat-treated in inert and/or reducing atmosphere.
  • hard constituent powder coated with at least one iron group metal is obtained which after addition of pressing agent can be compacted and sintered according to standard practice to a body containing hard constituents in a binder phase.
  • grain growth inhibitors When making submicron cemented carbide i.e. with a WC grain size of ⁇ 1 ⁇ m grain growth inhibitors have to be added in order to avoid WC grain growth during sintering.
  • grain growth inhibitors the metals V and Cr are often used but also Mo and W can be used.
  • the powder obtained was fired in a furnace in a porous bed about 1 cm thick in nitrogen atmosphere in a closed vessel, heating rate 10°C/min to 500°C, completed with reduction in hydrogen for 90 minutes, finally followed by cooling in nitrogen atmosphere at 10°C/min. No cooling step between burning off and reduction step was used.
  • the powder obtained was mixed with pressing agent in ethanol with adjustment of carbon content (carbon black), dried, compacted and sintered according standard practice for WC-Co alloys.
  • Example 2 A WC-0.9 wt%Mo-10 wt%Co cemented carbide was made in the same way as in Example 1 but with no addition of cobalt acetate tetrahydrate (Co(C 2 H 3 O 2 ) 2 x 4H 2 O) and only 1.7 g triethanolamine to the solution. The same result as in Example 1 was obtained.
  • a WC-0.9 wt%Mo-10 wt%Co cemented carbide was made in the same way as in Example 1 but the solution used was a mixture of 250 ml methanol + 100 ml water (1.06 g ammonium molybdate tetrahydrate/100 ml solution). The same result as in Example 1 was obtained.
  • a WC-0.9 wt%Mo-10 wt%Co cemented carbide was made in the same way as in Example 1 but the solution used was a mixture of 100 ml ethanol + 140 ml water (1.54 g ammonium molybdate tetrahydrate/100 ml solution). The same result as in Example 1 was obtained.
  • a WC-0.9 wt%Mo-10 wt%Co cemented carbide was made in the same way as in Example 1 but the solution used was a mixture of 230 ml ethanol + 20 ml water (1.48 g ammonium molybdate tetrahydrate/100 ml solution). A cemented carbide structure with porosity A02, B04 was obtained.
  • the powder obtained was fired in a furnace in a porous bed about 1 cm thick in nitrogen atmosphere in a closed vessel, heating rate 10°C/min to 500°C, completed with reduction in hydrogen for 90 minutes, finally followed by cooling in nitrogen atmosphere at 10°C/min. No cooling step between burning off and reduction step was used.
  • the powder obtained was mixed with pressing agent in ethanol with adjustment of carbon content (carbon black), dried, compacted and sintered according standard practice for WC-Co alloys.
  • a WC-0.9 wt%W-10 wt%Co cemented carbide was made in the same way as in Example 6 but with no addition of cobalt acetate tetrahydrate (Co(C 2 H 3 O 2 ) 2 x 4H 2 O) and only 1.0 g triethanolamine to the solution. The same result as in Example 6 was obtained.
  • a WC-0.9 wt%W-10 wt%Co cemented carbide was made in the same way as in Example 6 but the solution used was a mixture of 175 ml methanol + 175 ml water (0.83 g ammonium metatungstate hydrate/100 ml solution). The same result as in Example 6 was obtained.
  • a WC-0.9 wt%W-10 wt%Co cemented carbide was made in the same way as in Example 6 but the solution used was a mixture of 200 ml ethanol + 100 ml water (0.97 g ammonium metatungstate hydrate/100 ml solution). The same result as in Example 6 was obtained.
  • a WC-0.9 wt%W-10 wt%Co cemented carbide was made in the same way as in Example 6 but the solution used was 200 ml ethanol with no water (1.45 g ammonium metatungstate hydrate/100 ml solution).
  • a cemented carbide structure with high porosity A04, B08 was obtained.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Claims (1)

  1. Procédé de fabrication d'un matériau composite métallique comprenant les étapes suivantes consistant à :
    - dissoudre au moins un sel ou un composé métallique inorganique constitué d'au moins un métal parmi les groupes IVa, Va et VIa du système périodique dans de l'eau et dans éventuellement au moins un autre solvant polaire et à réaliser une liaison complexe dudit sel métallique avec au moins un agent de formation de complexe comprenant des groupements fonctionnels sous la forme de OH ou NR3 (R = H ou un alkyle)
    - ajouter une poudre de constituant dur et optionnellement une source de carbone soluble à la solution
    - évaporer le solvant
    - soumettre à un traitement thermique la poudre restante dans une atmosphère inerte et/ou réductrice pour obtenir ladite poudre de constituant dur revêtue avec ledit au moins un métal
    - ajouter un agent de pressage seul ou avec d'autres poudres de constituants durs revêtues et/ou du carbone pour obtenir la composition souhaitée pour ladite poudre de constituant dur revêtue, la compacter et la fritter, caractérisé en ce que ledit métal est du Mo et/ou du W et en ce que ledit sel de métal est présent dans une proportion inférieure à 4 × 10-3 × (% en poids de H2O)2 g/100 ml de solution et avec pas moins que 10 % en poids d'eau dans la solution.
EP00105246A 1999-04-06 2000-03-14 Procédé de préparation d'un matériau composite métallique Expired - Lifetime EP1043411B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9901206A SE519233C2 (sv) 1999-04-06 1999-04-06 Sätt att tillverka metallkompositmaterial för hårdmetall
SE9901206 1999-04-06

Publications (3)

Publication Number Publication Date
EP1043411A2 EP1043411A2 (fr) 2000-10-11
EP1043411A3 EP1043411A3 (fr) 2005-11-02
EP1043411B1 true EP1043411B1 (fr) 2008-07-09

Family

ID=20415101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00105246A Expired - Lifetime EP1043411B1 (fr) 1999-04-06 2000-03-14 Procédé de préparation d'un matériau composite métallique

Country Status (5)

Country Link
EP (1) EP1043411B1 (fr)
JP (1) JP2000313929A (fr)
AT (1) ATE400669T1 (fr)
DE (1) DE60039384D1 (fr)
SE (1) SE519233C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008052559A1 (de) 2008-10-21 2010-06-02 H.C. Starck Gmbh Metallpulver
EP2436793A1 (fr) 2008-10-20 2012-04-04 H.C. Starck GmbH Poudre métallique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8771391B2 (en) 2011-02-22 2014-07-08 Baker Hughes Incorporated Methods of forming polycrystalline compacts
JP6228765B2 (ja) * 2013-06-19 2017-11-08 小林　博 ナノ粒子の製造方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE510659C2 (sv) * 1997-10-14 1999-06-14 Sandvik Ab Sätt att framställa en hårdmetall innefattande beläggning av partiklar av hårdämnet med bindemetall

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2436793A1 (fr) 2008-10-20 2012-04-04 H.C. Starck GmbH Poudre métallique
DE102008052559A1 (de) 2008-10-21 2010-06-02 H.C. Starck Gmbh Metallpulver

Also Published As

Publication number Publication date
EP1043411A3 (fr) 2005-11-02
DE60039384D1 (de) 2008-08-21
SE9901206D0 (sv) 1999-04-06
ATE400669T1 (de) 2008-07-15
SE519233C2 (sv) 2003-02-04
SE9901206L (sv) 2000-10-07
EP1043411A2 (fr) 2000-10-11
JP2000313929A (ja) 2000-11-14

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