DE861219T1 - Whiskerarmiertes keramisches schneidwerkzeug und zusammensetzung davon - Google Patents

Whiskerarmiertes keramisches schneidwerkzeug und zusammensetzung davon

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Publication number
DE861219T1
DE861219T1 DE0861219T DE96935903T DE861219T1 DE 861219 T1 DE861219 T1 DE 861219T1 DE 0861219 T DE0861219 T DE 0861219T DE 96935903 T DE96935903 T DE 96935903T DE 861219 T1 DE861219 T1 DE 861219T1
Authority
DE
Germany
Prior art keywords
composition
ceramic
matrix
volume
titanium
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.)
Pending
Application number
DE0861219T
Other languages
English (en)
Inventor
William R. Greensburg Pa 15601 Huston
Pankaj K. Greensburg Pa 15601 Mehrotra
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.)
Kennametal Inc
Original Assignee
Kennametal 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24226743&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE861219(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kennametal Inc filed Critical Kennametal Inc
Publication of DE861219T1 publication Critical patent/DE861219T1/de
Pending legal-status Critical Current

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    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
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    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
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    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/27—Cutters, for shaping comprising tool of specific chemical composition

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Claims (1)

  1. PRINZ & PARTNER
    PATENTANWÄLTE Manzingenveg 7
    EUROPEAN PATENT ATTORNEYS D-81241 München
    12. Oktober 1998
    96935903.3-1218
    Kennametal Ine.
    Our File; K 1593 DE
    Patentansprüche
    1. Durch Verdichtung einer Mischung aus Startkomponenten hergestellte Zusammensetzung, wobei die Zusammensetzung folgendes umfaßt:
    eine Matrix mit einem oder mehreren der Karbide, Nitride und Karbonitride von Hafnium, Molybdän, Wolfram, Zirkonium, Tantal, Niob, Vanadium, Titan und deren festen Lösungen in einer Menge von über 50 Vol.-% der Matrix, wobei die Matrix weiter Rückstände von Sinterhilfsmitteln beinhaltet, die aufgrund der Verwendung eines Sinterhilfsmittels oder mehrerer Sinterhilfsmittel als Startkomponente in einer Menge von weniger als 0,5 Gew.-% der Startkomponenten vorhanden sind, wobei das Sinterhilfsmittel Yttriumoxid, Magnesiumoxid und/oder Zirkoniumoxid umfaßt, und wobei die Matrix zwischen 60 und 99,8 Vol.-% der Zusammensetzung umfaßt; und
    Keramikwhisker, die gleichförmig über die Matrix verteilt sind, wobei die Keramikwhisker zwischen 0,2 und 40 Vol.-% der Zusammensetzung umfassen.
    2. Zusammensetzung nach Anspruch 1, bei der die Keramikwhisker aus einem oder mehreren Stoffen der folgenden Gruppe ausgewählt sind: Aluminiumoxid, Siliciumkarbid, Borkarbid, Siliciumnitrid und die Karbide, Nitride, Boride und Karbonitride von Titan, Zirkonium und Hafnium.
    3. Zusammensetzung nach Anspruch 1, bei der die Matrix weiter Keramikpartikel beinhaltet, die aus der wenigstens einem Stoff der aus Siliciumkarbid, Titanborid, Zirkoniumborid, Hafniumborid, Aluminiumoxid, Zirkoniumoxid und Hafniumoxid bestehenden Gruppe ausgewählt sind.
    4. Zusammensetzung nach Anspruch 1, bei der die Matrix mehr als 50 Vol.-% Titankarbonitrid und der Rest der Matrix wenigstens 40 Vol.-% Aluminiumoxid aufweist.
    5. Zusammensetzung nach Anspruch 5, bei der die Keramikwhisker Siliciumkarbidwhisker umfassen und die Siliciumkarbidwhisker zwischen etwa 2 Vol.-% und etwa 35 Vol.-% der Zusammensetzung umfassen.
    6. Zusammensetzung nach Anspruch 5, bei der die Keramikwhisker Siliciumkarbidwhisker umfassen und die Siliciumkarbidwhisker zwischen 10 Vol.-% und 30 Vol.-% der Zusammensetzung umfassen.
    7. Zusammensetzung nach Anspruch 1, bei der die Matrix mehr als 50 Vol.-% Titankarbonitrid und der Rest der Matrix weniger als 50 Vol.-% Aluminiumoxid aufweist.
    8. Zusammensetzung nach Anspruch 1, bei der die Matrix mehr als 50 Vol.-% Titanmolybdänkarbid und der Rest der Matrix wenigstens 40 Vol.-% Aluminiumoxid aufweist.
    9. Zusammensetzung nach Anspruch 8, worin die Keramikwhisker Siliciumkarbidwhisker umfassen und die Siliciumkarbidwhisker zwischen etwa 2 Vol.-% und etwa 35 Vol.-% der Zusammensetzung umfassen.
    H 61 ZI 9 T
    10. Zusammensetzung nach Anspruch 1, bei der die Matrix mehr als 50 Vol.-% Titanmolybdänkarbid aufweist und der Rest der Matrix weniger als 50 Vol.-% Aluminiumoxid aufweist.
    11. Keramisches Schneidwerkzeug mit:
    einer Spanfläche, einer Freifläche und einer Schneidkante am Zusammentreffen der Spanfläche und der Freifläche,
    einer keramischen Zusammensetzung mit einer Matrix, die wenigstens 50 Vol.-% von einem oder mehreren der Karbide, Nitride und Karbonitride von Hafnium, Molybdän, Zirkonium, Tantal, Niob, Vanadium, Wolfram, Titan und deren festen Lösungen umfaßt, wobei die Matrix weiter Rückstände von Sinterhilfsmitteln beinhaltet, die aufgrund der Verwendung eines Sinterhilfsmittels oder mehrerer Sinterhilfsmittel als Startkomponente in einer Menge von weniger als 0,5 Gew.-% der Startkomponenten vorhanden sind, wobei das Sinterhilfsmittel Yttriumoxid, Magnesiumoxid und/oder Zirkoniumoxid umfaßt, und wobei die Matrix zwischen 60 und 99,8 Vol.-% der keramischen Zusammensetzung umfaßt; und
    Keramikwhiskern, die gleichförmig über die Matrix verteilt sind, wobei die Keramikwhisker zwischen 0,2 und 40 Vol.-% der keramischen Zusammensetzung umfassen.
    12. Keramisches Schneidwerkzeug nach Anspruch 12, bei dem die Keramikwhisker aus einem oder mehreren Stoffen der aus Aluminiumoxid, Siliciumkarbid, Siliciumnitrid, Borkarbid und den Karbiden, Nitriden, Boriden oder Karbonitriden von Titan, Zirkon oder Hafnium bestehenden Gruppe ausgewählt sind.
    13. Keramisches Schneidwerkzeug nach Anspruch 12, bei dem die Matrix weiter Keramikpartikel aufweist, die aus einem oder mehreren Stoffen der aus Siliciumkarbid, Titanborid, Zirkoniumborid, Hafniumborid, Aluminiumoxid, Zirkoniumoxid und Hafniumoxid bestehenden Gruppe ausgewählt sind.
    14. Keramisches Schneidwerkzeug nach Anspruch 12, das ferner eine Beschichtung auf der Spanfläche und der Freifläche aufweist.
    15. Keramisches Schneidwerkzeug nach Anspruch 15, bei dem die Beschichtung eine Schicht aufweist, die aus der aus Aluminiumoxid, TiC, TiN, TiCN und TiAlN bestehenden Gruppe ausgewählt ist.
    16. Keramisches Schneidwerkzeug nach Anspruch 16, bei dem die Schicht durch chemisches Aufdampfen aufgebracht ist.
    17. Keramisches Schneidwerkzeug nach Anspruch 16, bei dem die Schicht durch physikalisches Aufdampfen aufgebracht ist.
    18. Durch Verdichtung einer Mischung aus Startkomponenten hergestellte keramische Zusammensetzung, wobei die keramische Zusammensetzung folgendes umfaßt:
    eine Matrix mit einem oder mehreren der Stoffe Titannitrid, Titankarbonitrid, den Karbiden, Nitriden und Karbonitriden von Hafnium, Molybdän, Niob und Wolfram und deren festen Lösungen in einer Menge von über 50 Vol.-% der Matrix, wobei die Matrix zwischen 60 und 99,8 Vol.-% der Zusammensetzung umfaßt; und
    Keramikwhisker, die gleichförmig über die Matrix verteilt sind, wobei die Keramikwhisker zwischen 0,2 und 40 Vol.-% der Zusammensetzung umfassen.
    19. Zusammensetzung nach Anspruch 19, bei der die Keramikwhisker einem oder mehreren Stoffen der aus Aluminiumoxid, Siliciumkarbid, Siliciumnitrid, Borkarbid und den Karbiden, Nitriden, Boriden und Karbonitriden von Titan, Zirkonium und Hafnium bestehenden Gruppe ausgewählt sind.
    /EP O ®ß191&ogr; &tgr;
    20. Zusammensetzung nach Anspruch 19, bei der die Matrix weiter Keramikpartikel beinhaltet, die aus einem oder mehreren Stoffen der aus Siliciumkarbid, Titanborid, Zirkoniumborid, Hafniumborid, Chromborid, Aluminiumoxid, Zirkoniumoxid und Hafniumoxid bestehenden Gruppe ausgewählt sind.
    21. Zusammensetzung nach Anspruch 19, bei der die Matrix weiter Titankarbid und die Karbide, Karbonitride und Nitride von Zirkonium, Tantal und Vanadium umfaßt, und bei der die Matrix weiter Rückstände von Sinterhilfsmitteln aufweist, die aufgrund der Verwendung eines Sinterhilfsmittels oder mehrerer Sinterhilfsmittel als Startkomponente in einer Menge von höchstens 1 Gew.-% der Startkomponenten vorhanden sind.
    22. Zusammensetzung nach Anspruch 22, bei der die Matrix mehr als 50 Vol.-% Titankarbid und der Rest der Matrix wenigstens 40 Vol.-% Aluminiumoxid und Rückstände von Sinterhilfsmitteln aufweist.
    23. Zusammensetzung nach Anspruch 23, bei der die Keramikwhisker Siliciumkarbidwhisker umfassen und die Siliciumkarbidwhisker zwischen etwa 10 Vol.-% und etwa 40 Vol.-% der Zusammensetzung umfassen.
    24. Zusammensetzung nach Anspruch 22, bei der die Matrix mehr als 50 Vol.-% Titankarbid, und der Rest der Matrix weniger als 50 Vol.-% Aluminiumoxid und Rückstände von Sinterhilfsmitteln aufweist.
    25. Keramisches Schneidwerkzeug mit:
    einer Spanfläche, einer Freifläche und einer Schneidkante am Zusammentreffen der Spanfläche und der Freifläche;
    einer keramischen Zusammensetzung mit einer Matrix, die zwischen etwa 45 Vol.-% und weniger als 50 Vol.-% Titanmolybdänkarbid und weniger als etwa 55 Vol.-% Aluminiumoxid auf-
    weist, wobei die Matrix zwischen etwa 60 Vol.-% und etwa 90 Vol.-% der keramischen Zusammensetzung umfaßt; und
    Keramikwhiskern, die gleichförmig über die Matrix verteilt sind, wobei die Keramikwhisker etwa 2 Vol.-% bis etwa 35 VoL-% der keramischen Zusammensetzung umfassen.
    26. Keramisches Schneidwerkzeug nach Anspruch 26, bei dem die Matrix zwischen etwa 55 Vol.-% und mehr als etwa 50 Vol.-% Aluminiumoxid aufweist.
    27. Keramisches Schneidwerkzeug nach Anspruch 26, bei dem die Keramikwhisker etwa 10 Vol.-% bis etwa 30 Vol.-% der keramischen Zusammensetzung umfassen.
    28. Zusammensetzung nach Anspruch 1, bei der das oder die Sinterhilfsmittel eine Menge von höchstens 0,3 Gew.-% der Startkomponenten umfassen.
    29. Zusammensetzung nach Anspruch 5, bei der das Titankarbonitrid die Formel Ti(CxNy) aufweist, wobei y kleiner als 0,95 und größer als 0,5 ist und &khgr; + y = 1 ist.
    30. Zusammensetzung nach Anspruch 5, bei der das Titankarbonitrid die Formel Ti(CxNy) aufweist, wobei y kleiner als 0,9 und größer oder gleich 0,55 ist und &khgr; + y = 1 ist.
    31. Zusammensetzung nach Anspruch 5, bei der das Titankarbonitrid die Formel Ti(CxNy) aufweist, wobei y kleiner als 0,75 und größer oder gleich 0,6 ist und &khgr; + y = 1 ist.
DE0861219T 1995-11-13 1996-09-20 Whiskerarmiertes keramisches schneidwerkzeug und zusammensetzung davon Pending DE861219T1 (de)

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US5955390A (en) 1999-09-21
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