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EP0448572A1 - Corps composite de metal dur et procede de production. - Google Patents

Corps composite de metal dur et procede de production.

Info

Publication number
EP0448572A1
EP0448572A1 EP89913058A EP89913058A EP0448572A1 EP 0448572 A1 EP0448572 A1 EP 0448572A1 EP 89913058 A EP89913058 A EP 89913058A EP 89913058 A EP89913058 A EP 89913058A EP 0448572 A1 EP0448572 A1 EP 0448572A1
Authority
EP
European Patent Office
Prior art keywords
composite body
reinforcing material
sintering
hard
body according
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.)
Granted
Application number
EP89913058A
Other languages
German (de)
English (en)
Other versions
EP0448572B1 (fr
Inventor
Klaus Dreyer
Hans Kolaska
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.)
Widia GmbH
Original Assignee
Krupp Widia GmbH
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
Priority claimed from DE3842439A external-priority patent/DE3842439A1/de
Priority claimed from DE3843219A external-priority patent/DE3843219A1/de
Application filed by Krupp Widia GmbH filed Critical Krupp Widia GmbH
Priority to AT89913058T priority Critical patent/ATE90399T1/de
Publication of EP0448572A1 publication Critical patent/EP0448572A1/fr
Application granted granted Critical
Publication of EP0448572B1 publication Critical patent/EP0448572B1/fr
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
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • 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
    • C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
    • C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
    • C22C49/08—Iron group metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
    • C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments

Definitions

  • the invention relates to a hard metal composite body consisting of hard material phases such as tungsten carbide and / or carbides or nitrides or elements of the IVa or Va group of the periodic table, of reinforcing materials and of a binder metal phase such as cobalt and / or iron and / or nickel . Furthermore, the invention relates to a method for producing a hard metal composite material by powder metallurgy.
  • the single crystals known in principle from the prior art have excellent mechanical properties, such as great tensile and shear strength.
  • DE-PS 259249 describes a sintered hard metal consisting of hard materials and binders, which hard materials in the form of needle-shaped single crystals in an amount of at least 0.1%, preferably 0.5 to 1.5% of the contains total hard material.
  • WC in the form of acicular single crystals is added to the hard material before grinding, after the addition of a binding metal to the iron group, the hard metal batch is pressed and sintered to form a liquid phase.
  • the monocrystalline WC portion largely dissolves in the binding phase (cf. DE-Z "Metall", July 1974, issue 7).
  • the proposed hard single crystals do not suffice to obtain a noticeable improvement in the wear properties, in particular also not because only as many hard single crystals should be added until the hard grain fraction (grains with an average diameter below 2 ⁇ m) is replaced. It is an object of the present invention to provide a hard metal composite body which, compared to the previously known hard metal composite bodies, has a higher toughness resistance, greater hardness, even when the hard metal composite body is subjected to high thermal loads, and less susceptibility to breakage. It is also an object of the present invention to provide a method for producing such a hard metal composite body.
  • EP-0067584 B1 describes a process for producing a composite material from a metallic, ceramic glass or plastic base material and therein substantially homogeneously and uniformly distributed deagglomerated silicon carbide whiskers for reinforcing the base material, in which silicon carbide whiskers are used in a polar solvent stirring to form a slurry and then grinding the slurry to form a slurry of deagglomerated silicon carbide whiskers, mixing the slurry therefrom with a base material to form a homogeneous mixture, then drying and shaping into a blank.
  • composite materials are known from EP-0213615 A2, in which silicon carbide and silicon nitride whiskers are contained in a metal matrix.
  • a particular advantage of an inert whisker coating is, however, that a targeted strength of the bond with the matrix can be set.
  • the storage of coated whiskers leads to an increase in hardness with a simultaneous increase in toughness, even under high-temperature loads, such as those e.g. take place at Schneidtechnik ⁇ . This is advantageously also achieved in the case of hard metals which have a low binder content (less than 8% by volume).
  • the inert coating has a certain protective function for the coated single crystals, i.e. the single crystals cannot be dissolved in the binder; in particular, WC single crystals can be used for the first time in a proportion which is effective in relation to the hard metal composition.
  • the part of the task relating to the method known from the prior art is achieved by the features specified in claim 11, in particular with contents of up to 20 volume -3.
  • the normal sintering process, the combined sintering / HIP process or the sintering with a subsequent hot isostatic pressing in a separate plant and, in the case of higher reinforcing material contents, the hot pressing is preferred.
  • the production of whisker hard metal composites is basically based on known powder metallurgical process steps.
  • the reinforcing materials whiskers, platelets
  • the reinforcing materials are first prepared, deagglomerated and classified and preferably coated using a CVD or PVD process before they are subjected to the further process steps.
  • the hard metal composite material according to the invention has greater hardness and higher strength values than composite materials known from the prior art.
  • the toughness resilience is higher with a reduced risk of breakage, without having to set higher binding contents.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Powder Metallurgy (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Corps composite de métal dur consistant en une substance dure, un liant et un matériau de renforcement intercalé, et procédé pour produire un corps composite de métal dur par métallurgie des poudres. Pour obtenir un corps composite de métal dur, qui supporte de fortes contraintes d'endurance en étant à la fois très dur et peu sujet à la rupture, on y intercale des matériaux de renforcement monocristallins cristallisés en aiguilles et/ou en lamelles, dotés de préférence d'un revêtement inerte par rapport à la phase de métal liant, et composés de borures et/ou carbures et/ou nitrures et/ou carbonitrures, éléments de la colonne IVa ou Va, ou de mélanges de ces derniers, et/ou un matériau de renforcement monocristallin en SiC, Si3N4, Si2N2O, Al2O3, ZrO2, AlN et/ou BN. Ce corps composite de métal dur est obtenu par des procédés de métallurgie des poudres, le matériau de renforcement, doté par dépôt en phase gazeuse par procédé chimique ou physique (CVD ou PVD) d'un revêtement inerte par rapport à la phase de métal liant, étant mélangé, sous forme désagglomérée et classifiée, avec le mélange broyé de substances dures et de liants, puis séché, granulé, pressé par compression uniaxiale et isostatique à basse température, et soumis à une opération de frittage ou à un procédé combiné ou séparé de frittage/compression isostatique à température élevée ou à une compression axiale à chaud. On optera de préférence pour la compression axiale à chaud lorsque la teneur en matériau de renforcement est supérieure à 20 % en volume, sinon il est préférable de recourir aux autres modes de traitement.
EP89913058A 1988-12-16 1989-11-27 Corps composite de metal dur et procede de production Expired - Lifetime EP0448572B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89913058T ATE90399T1 (de) 1988-12-16 1989-11-27 Hartmetallverbundkoerper und verfahren zu seiner herstellung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3842439A DE3842439A1 (de) 1988-12-16 1988-12-16 Hartmetallverbundkoerper und verfahren zu seiner herstellung
DE3842439 1988-12-16
DE3843219 1988-12-22
DE3843219A DE3843219A1 (de) 1988-12-22 1988-12-22 Hartmetallverbundkoerper und verfahren zu seiner herstellung

Publications (2)

Publication Number Publication Date
EP0448572A1 true EP0448572A1 (fr) 1991-10-02
EP0448572B1 EP0448572B1 (fr) 1993-06-09

Family

ID=25875237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89913058A Expired - Lifetime EP0448572B1 (fr) 1988-12-16 1989-11-27 Corps composite de metal dur et procede de production

Country Status (5)

Country Link
US (1) US5173107A (fr)
EP (1) EP0448572B1 (fr)
JP (1) JPH04502347A (fr)
DE (1) DE58904666D1 (fr)
WO (1) WO1990007017A1 (fr)

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DE69221047T2 (de) * 1991-09-13 1998-02-26 Honda Motor Co Ltd Konstruktionselement mit hoher Festigkeit und Verfahren seiner Herstellung
US5376466A (en) * 1991-10-17 1994-12-27 Mitsubishi Materials Corporation Cermet blade member
US5579532A (en) * 1992-06-16 1996-11-26 Aluminum Company Of America Rotating ring structure for gas turbine engines and method for its production
CH686888A5 (fr) * 1993-11-01 1996-07-31 Ufec Universal Fusion Energy C Matériau composite céramo-métallique à haute tenacité et procédé pour sa fabrication.
US5672435A (en) * 1994-12-12 1997-09-30 The Dow Chemical Company Hard disk drive components and methods of making same
US5580666A (en) * 1995-01-20 1996-12-03 The Dow Chemical Company Cemented ceramic article made from ultrafine solid solution powders, method of making same, and the material thereof
US5842107A (en) * 1995-08-31 1998-11-24 National Science Council Sintering process for AIN powder coated with Al film
EP0966550B1 (fr) 1997-03-10 2001-10-04 Widia GmbH Corps fritte en metal dur ou cermet et son procede de production
BR9809615A (pt) * 1997-05-13 2000-07-04 Richard Edmund Toth Pós duros revestidos de material rijo e artigos sinterizados dos mesmos
US20040052984A1 (en) 1997-05-13 2004-03-18 Toth Richard E. Apparatus and method of treating fine powders
EP1452611B1 (fr) * 2001-11-13 2005-03-23 Fundacion Inasmet Fabrication de produits en matieres metalliques structurales renforcees par des carbures
CN1997475B (zh) * 2004-06-10 2010-09-29 阿洛梅特公司 固结坚韧涂覆的硬质粉体的方法
US7682557B2 (en) * 2006-12-15 2010-03-23 Smith International, Inc. Multiple processes of high pressures and temperatures for sintered bodies
CA2640206A1 (fr) * 2008-10-02 2010-04-02 Hydro-Quebec Materiaux composites pour cathodes mouillables et usage de ceux-ci pour la production d'aluminium
US20100104874A1 (en) * 2008-10-29 2010-04-29 Smith International, Inc. High pressure sintering with carbon additives
CN102373357B (zh) * 2010-08-19 2013-09-18 比亚迪股份有限公司 一种金属陶瓷组合物及其制备方法、一种金属陶瓷和一种雷蒙磨
CN111471942A (zh) * 2020-03-25 2020-07-31 成都美奢锐新材料有限公司 一种3c产品用纳米晶复合材料及制备方法

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US3139672A (en) * 1961-02-10 1964-07-07 Bendix Corp Rocket nozzles and the like
AT259242B (de) * 1964-11-23 1968-01-10 Boehler & Co Ag Geb Aus Hartstoffen und Bindemetall bestehendes Sinterhartmetall und Verfahren zu seiner Herstellung
US4007049A (en) * 1968-08-06 1977-02-08 The United States Of America As Represented By The Secretary Of The Air Force Thermal shock resistant ceramic composite
DE2461801C3 (de) * 1974-12-30 1979-01-04 Fisitscheskij Institut Imeni P.N. Lebedeva Akademii Nauk Ssr Feuerfester Werkstoff
US4259112A (en) * 1979-04-05 1981-03-31 Dwa Composite Specialties, Inc. Process for manufacture of reinforced composites
JPS6031799B2 (ja) * 1979-11-30 1985-07-24 黒崎窯業株式会社 ＳｉＣ−Ｓｉ↓３Ｎ↓４系複合耐熱セラミツクス材料及びその製造方法
US4268314A (en) * 1979-12-21 1981-05-19 Union Carbide Corporation High density refractory composites and method of making
JPS57205364A (en) * 1981-06-08 1982-12-16 Ngk Spark Plug Co Manufacture of cutting tool ceramics
US4463058A (en) * 1981-06-16 1984-07-31 Atlantic Richfield Company Silicon carbide whisker composites
JPS59121196A (ja) * 1982-12-25 1984-07-13 Tokai Carbon Co Ltd 複合材用ウイスカ−プリフオ−ムの製造方法
SE451581B (sv) * 1984-04-06 1987-10-19 Sandvik Ab Keramiskt material huvudsakligen baserat pa kiselnitrid, aluminiumnitrid och aluminiumoxid
US4732779A (en) * 1985-05-21 1988-03-22 Kabushiki Kaisha Toyota Chuo Kenkyusho Fibrous material for composite materials, fiber-reinforced metal produced therefrom, and process for producing same
DE3662782D1 (en) * 1985-06-10 1989-05-18 Ngk Spark Plug Co Fiber-reinforced compositie material for tools
CA1285582C (fr) * 1986-08-04 1991-07-02 Joseph G. Ii Baldoni Composites a base de matiere ceramique caracterises pour leur resistance accrue au bris
US4756791A (en) * 1986-08-25 1988-07-12 Gte Laboratories Incorporated Chemical vapor deposition process for producing metal carbide or nitride whiskers
DE3706000A1 (de) * 1987-02-25 1988-09-08 Feldmuehle Ag Schneidplatte
SE8701791D0 (sv) * 1987-04-29 1987-04-29 Sandvik Ab Cemented carbonitride alloy with improved toughness behaviour
DE3869483D1 (de) * 1987-06-09 1992-04-30 Sandvik Ab Mit whiskern verstaerktes keramisches schneidwerkzeug.
JPH01103205A (ja) * 1987-10-15 1989-04-20 Toshiba Ceramics Co Ltd 炭素加工用工具

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See references of WO9007017A1 *

Also Published As

Publication number Publication date
JPH04502347A (ja) 1992-04-23
WO1990007017A1 (fr) 1990-06-28
US5173107A (en) 1992-12-22
DE58904666D1 (de) 1993-07-15
EP0448572B1 (fr) 1993-06-09

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