EP2150510A1 - Matériau céramique - Google Patents

Matériau céramique

Info

Publication number
EP2150510A1
EP2150510A1 EP08736574A EP08736574A EP2150510A1 EP 2150510 A1 EP2150510 A1 EP 2150510A1 EP 08736574 A EP08736574 A EP 08736574A EP 08736574 A EP08736574 A EP 08736574A EP 2150510 A1 EP2150510 A1 EP 2150510A1
Authority
EP
European Patent Office
Prior art keywords
ceramic material
material according
production
strontium aluminate
ceramic
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.)
Withdrawn
Application number
EP08736574A
Other languages
German (de)
English (en)
Inventor
Meinhard Kuntz
Ana HERRÁN FUERTES
Kilian Friederich
Norbert Schneider
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.)
Ceramtec GmbH
Original Assignee
Ceramtec 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39494673&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2150510(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ceramtec GmbH filed Critical Ceramtec GmbH
Publication of EP2150510A1 publication Critical patent/EP2150510A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/111—Fine ceramics
    • C04B35/117—Composites
    • C04B35/119—Composites with zirconium oxide
    • C—CHEMISTRY; METALLURGY
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C04B35/645—Pressure sintering
    • C04B35/6455—Hot isostatic pressing
    • C—CHEMISTRY; METALLURGY
    • 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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3213—Strontium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/612—Machining
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/661—Multi-step sintering
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/661—Multi-step sintering
    • C04B2235/662—Annealing after sintering
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
    • C04B2235/785—Submicron sized grains, i.e. from 0,1 to 1 micron
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
    • C04B2235/87—Grain boundary phases intentionally being absent
    • C—CHEMISTRY; METALLURGY
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    • 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

Definitions

  • the invention relates to a ceramic material.
  • Ceramic materials offer a variety of applications. Their composition can be tailored by specific addition of certain elements and / or their compounds to the intended use.
  • Aluminum oxide and zirconium oxide, for example, are ceramic materials which are processed individually or in combination with one another inter alia to cutting tools, catalyst supports or prostheses.
  • Hardness, aging resistance, water wetting behavior, and high thermal conductivity are properties known of alumina sintered compacts, high strength, and high fracture toughness, that is, damage tolerance, are properties known from zirconia sintered compacts.
  • an aluminum oxide material in the following composition in the sintered body is suitable as a material, in particular for use in the field of medical technology, for example for the production of orthoses and endoprostheses, such as hip joint and knee joint implants.
  • Alumina in appropriate addition to 100 wt .-%.
  • Dominant structural component of such a combination of materials is the aluminum oxide. Therefore, the property-determining characteristics such as hardness, Young's modulus and thermal conductivity close to the properties of pure alumina.
  • the constituents zirconium oxide and optionally strontium aluminate are incorporated in the aluminum oxide matrix.
  • the raw materials are preferably used in high purity. Due to the high purity of the raw materials, grain boundary phases are formed only to an extremely small extent.
  • the strontium aluminate forms characteristic platelet-shaped crystallites, platelets, which contribute significantly to the increase in strength.
  • the constituents zirconium oxide and strontium aluminate contribute to increasing the fracture toughness, which is about 60% higher than with pure aluminum oxide.
  • the strength is increased almost by a factor of 2
  • the damage tolerance that is, the property of the component, even with a possible damage still retain a high residual strength.
  • the crack path is surprisingly deflected, so that additional energy is absorbed in the crack propagation.
  • a peculiarity of the material according to the invention is to be considered that the two mechanisms mutually reinforce, so that the effective increase in the fracture toughness is even greater than would be expected by simple addition of the individual mechanisms.
  • Al 2 O 3 The content of Al 2 O 3 supplements from 72.65 wt .-% to 74.54 wt .-%. Commodity related contaminants ( ⁇ 0.05% by weight) are possible but not listed separately because of their minority.
  • the production of sintered molded articles from the material according to the invention takes place by means of conventional ceramic technology.
  • the properties of the sintered body from the material according to the invention can still be reinforced by inclusions. It is thus possible to mix whiskers and / or fibers into the material before forming a sintered body or incorporating reticulated structures or fabrics into the green state material.
  • the whiskers, fibers or nets or webs must be made of a material that does not interact with the ceramic material in such a way that deterioration of its properties occurs. In addition, the material must not change during sintering in such a way that the material is damaged.
  • Sinterform body which are made of the material according to the invention, surprisingly combine the respective best properties of competing ceramic materials alumina and zirconia for implant applications in itself: hardness, aging resistance, water wetting behavior and high thermal conductivity are properties of sintered form bodies of alumina High strength and high fracture toughness, that is damage tolerance, are properties known from zirconia sintered compacts.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Materials For Medical Uses (AREA)
  • Prostheses (AREA)

Abstract

La dureté, la tenue au vieillissement, le comportement au mouillage vis-à-vis de l'eau et la haute conductivité thermique sont des propriétés connues de corps moulés frittés en oxyde d'aluminium. D'autre part, la haute résistance et la haute ténacité à la rupture, c'est-à-dire la tolérance aux dommages, sont des propriétés connues de corps moulés frittés en oxyde de zirconium. L'objectif de l'invention est d'obtenir un matériau céramique réunissant toutes ces propriétés. A cet effet, l'invention concerne un matériau composé d'une forte proportion d'oxyde d'aluminium ainsi que d'oxyde de zirconium et éventuellement d'aluminate de strontium.
EP08736574A 2007-04-27 2008-04-25 Matériau céramique Withdrawn EP2150510A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007020473.8A DE102007020473B4 (de) 2007-04-27 2007-04-27 Keramischer Werkstoff, seine Verwendung und Sinterformkörper
PCT/EP2008/055056 WO2008132158A1 (fr) 2007-04-27 2008-04-25 Matériau céramique

Publications (1)

Publication Number Publication Date
EP2150510A1 true EP2150510A1 (fr) 2010-02-10

Family

ID=39494673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08736574A Withdrawn EP2150510A1 (fr) 2007-04-27 2008-04-25 Matériau céramique

Country Status (7)

Country Link
US (1) US8932970B2 (fr)
EP (1) EP2150510A1 (fr)
JP (2) JP5641928B2 (fr)
KR (1) KR101556719B1 (fr)
CN (1) CN101730672A (fr)
DE (1) DE102007020473B4 (fr)
WO (1) WO2008132158A1 (fr)

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DE102010032174B4 (de) 2010-07-23 2015-10-15 Ibu-Tec Advanced Materials Ag Verfahren zur Herstellung von stäbchenverstärkten Keramiken, Keramikwerkstoff und seine Verwendung, Pulverwerkstoff, Granulat, sowie vorgesinterter Körper
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AU2014343170B2 (en) * 2013-11-01 2016-11-10 Bajali Industrial Products Ltd. A wear resistant composition for manufacturing wear resistant component used for making grinding roll or table liner for vertical roller mill and method to manufacture the same
CN104529402A (zh) * 2014-12-20 2015-04-22 佛山铭乾科技有限公司 一种陶瓷浴盆
RU2018107242A (ru) 2015-07-28 2019-08-29 Керамтек Гмбх Металлические и/или керамические компоненты по меньшей мере с одной оссеоинтеграционной и остеоиндуктивной поверхностной (много)слойной структурой
CN108975933A (zh) * 2018-09-18 2018-12-11 广东蓝狮医疗科技有限公司 一种石墨增强耐磨损氧化铝-氧化锆复合陶瓷及其制备方法
DE102019201097A1 (de) * 2019-01-29 2020-07-30 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungsvorrichtung

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CN101730672A (zh) 2010-06-09
US20100152018A1 (en) 2010-06-17
DE102007020473A1 (de) 2008-10-30
JP2010524833A (ja) 2010-07-22
JP2014210706A (ja) 2014-11-13
KR101556719B1 (ko) 2015-10-02
US8932970B2 (en) 2015-01-13
DE102007020473B4 (de) 2016-03-03
JP5641928B2 (ja) 2014-12-17
WO2008132158A1 (fr) 2008-11-06
KR20100017312A (ko) 2010-02-16

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