EP0448572A1 - Hartmetallverbundkörper und verfahren zu seiner herstellung. - Google Patents
Hartmetallverbundkörper und verfahren zu seiner herstellung.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
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)
Description
Claims
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 |
---|---|---|---|
DE19883842439 DE3842439A1 (de) | 1988-12-16 | 1988-12-16 | Hartmetallverbundkoerper und verfahren zu seiner herstellung |
DE3842439 | 1988-12-16 | ||
DE19883843219 DE3843219A1 (de) | 1988-12-22 | 1988-12-22 | Hartmetallverbundkoerper und verfahren zu seiner herstellung |
DE3843219 | 1988-12-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0448572A1 true EP0448572A1 (de) | 1991-10-02 |
EP0448572B1 EP0448572B1 (de) | 1993-06-09 |
Family
ID=25875237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89913058A Expired - Lifetime EP0448572B1 (de) | 1988-12-16 | 1989-11-27 | Hartmetallverbundkörper und verfahren zu seiner herstellung |
Country Status (5)
Country | Link |
---|---|
US (1) | US5173107A (de) |
EP (1) | EP0448572B1 (de) |
JP (1) | JPH04502347A (de) |
DE (1) | DE58904666D1 (de) |
WO (1) | WO1990007017A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5436080A (en) * | 1991-09-13 | 1995-07-25 | Tsuyoshi Masumoto | High strength structural member and process for producing the same |
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 |
WO1998040525A1 (de) | 1997-03-10 | 1998-09-17 | Widia Gmbh | Hartmetall- oder cermet-sinterkörper und verfahren zu dessen herstellung |
WO1998051419A1 (en) * | 1997-05-13 | 1998-11-19 | Richard Edmund Toth | Tough-coated hard powders and sintered articles thereof |
US20040052984A1 (en) | 1997-05-13 | 2004-03-18 | Toth Richard E. | Apparatus and method of treating fine powders |
WO2003042419A1 (es) * | 2001-11-13 | 2003-05-22 | Fundacion Inasmet | Fabricación de productos en materiales metalicos estructurales reforzados con carburos |
MXPA06013640A (es) * | 2004-06-10 | 2007-05-16 | Allomet Corp | Metodo para consolidar polvos duros, recubiertos, asperos. |
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 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
CA1285831C (en) * | 1985-05-21 | 1991-07-09 | Senichi Yamada | 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 (en) * | 1986-08-04 | 1991-07-02 | Joseph G. Ii Baldoni | Ceramic based composites with improved fracture toughness |
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 |
-
1989
- 1989-11-27 DE DE8989913058T patent/DE58904666D1/de not_active Expired - Fee Related
- 1989-11-27 JP JP2500125A patent/JPH04502347A/ja active Pending
- 1989-11-27 US US07/689,237 patent/US5173107A/en not_active Expired - Fee Related
- 1989-11-27 WO PCT/DE1989/000740 patent/WO1990007017A1/de active IP Right Grant
- 1989-11-27 EP EP89913058A patent/EP0448572B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9007017A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0448572B1 (de) | 1993-06-09 |
US5173107A (en) | 1992-12-22 |
WO1990007017A1 (de) | 1990-06-28 |
DE58904666D1 (de) | 1993-07-15 |
JPH04502347A (ja) | 1992-04-23 |
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