DE190668T1 - Verfahren zur herstellung keramischer formkoerper. - Google Patents

Verfahren zur herstellung keramischer formkoerper.

Info

Publication number
DE190668T1
DE190668T1 DE198686101223T DE86101223T DE190668T1 DE 190668 T1 DE190668 T1 DE 190668T1 DE 198686101223 T DE198686101223 T DE 198686101223T DE 86101223 T DE86101223 T DE 86101223T DE 190668 T1 DE190668 T1 DE 190668T1
Authority
DE
Germany
Prior art keywords
ceramic
slurry
ceramic body
body according
particles
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
DE198686101223T
Other languages
English (en)
Inventor
Anil K. Camarillo California Agarwal
Robert A. Dudley Massachusetts Hay
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.)
Saint Gobain Abrasives Inc
Original Assignee
Norton Co
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 Norton Co filed Critical Norton Co
Publication of DE190668T1 publication Critical patent/DE190668T1/de
Pending 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
    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/6342—Polyvinylacetals, e.g. polyvinylbutyral [PVB]
    • 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
    • C04B33/00—Clay-wares
    • C04B33/28—Slip casting
    • 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
    • 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
    • C04B35/16—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 silicates other than clay
    • C04B35/18—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 silicates other than clay rich in aluminium 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Producing Shaped Articles From Materials (AREA)

Claims (10)

PATENTANSPRÜC HE
1. Verfahren zum Erzeugen von dünnen, flachen, wasserundurchlässigen keramischen Substraten, in dem aus einem Keramikpulver durch Schlickerguß und Trocknung ein Grünsubstrat erzeugt und dieses zu einem zusammenhängenden Keramiksubstrat gebrannt wird, dadurch gekennzeichnet, daß die Korngrößen von mindestens 90$ der Teilchen des in der Aufschlämmung enthaltenen Keramikpulvers in einem Bereich liegen, der nicht breiter ist als 0,3 jum, und 98$ der Teilchen dieses Pulvers kleiner sind als 1 pn.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Aufschlämmung vor dem Schlickerguß desagglomeriert wird.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Brennen 0,25 bis 2 Stunden lang bei einer Temperatur zwischen 13OO und 1500 0G durchgeführt wird.
4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Aufschlämmung Aluminiumoxidteilchen von höchstens 0,4 um enthält, von denen 90$ eine Korngröße zwischen 0,1 und 0,3 pm haben.
5· Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zum Herstellen der Aufschlämmung das Keramikpulver bis zu 48 Stunden lang gemischt wird.
6. Dünner, flacher, porenfreier Keramikkörper, dadurch gekennzeichnet, daß seine Dichte mindestens 95$ der theoretischen Dichte beträgt, daß er mindestens 99,5$ Aluminiumoxid enthält und daß die Keramik
eine durchschnittliche Oberflächen-Rauhtiefe von höchstens 44 nm hat und frei ist von durch Schleifen oder Polieren verursachten Oberflächendefekten.
7· Keramikkörper nach Anspruch 6, dadurch gekennzeichnet, daß er sich im gebrannten Zustand befindet und wasserundurchlässig und polykristallin ist.
8. Keramikkörper nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß er mindestens 99»5$ uC-Aluminiumoxid enthält.
9· Keramikkörper nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß er eine Dichte von mindestens 3»9 Mg/m^ hat.
10. Keramikkörper nach einem der Ansprüche 1 bis 9» dadurch gekennzeichnet, daß er eine durchschnittliche Oberflächen-Rauhtiefe von 30+2,5 nra hat.
DE198686101223T 1985-02-04 1986-01-30 Verfahren zur herstellung keramischer formkoerper. Pending DE190668T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69821985A 1985-02-04 1985-02-04
US06/787,240 US4678762A (en) 1985-02-04 1985-10-15 Very smooth and flat polycrystalline alumina substrates from direct firing

Publications (1)

Publication Number Publication Date
DE190668T1 true DE190668T1 (de) 1986-12-18

Family

ID=27106174

Family Applications (1)

Application Number Title Priority Date Filing Date
DE198686101223T Pending DE190668T1 (de) 1985-02-04 1986-01-30 Verfahren zur herstellung keramischer formkoerper.

Country Status (5)

Country Link
US (1) US4678762A (de)
EP (1) EP0190668A1 (de)
KR (1) KR930006335B1 (de)
CA (1) CA1272872A (de)
DE (1) DE190668T1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5383945A (en) * 1984-01-19 1995-01-24 Norton Company Abrasive material and method
US4769294A (en) * 1986-11-26 1988-09-06 Ceramics Process Systems Corp. Alumina materials for low temperature co-sintering with refractory metallization
US5248464A (en) * 1987-04-23 1993-09-28 Imperial Chemical Industries Plc Article of ceramic material and production thereof
US4954462A (en) * 1987-06-05 1990-09-04 Minnesota Mining And Manufacturing Company Microcrystalline alumina-based ceramic articles
US5185299A (en) * 1987-06-05 1993-02-09 Minnesota Mining And Manufacturing Company Microcrystalline alumina-based ceramic articles
DE3801326A1 (de) * 1988-01-19 1989-07-27 Asea Brown Boveri Verfahren zur herstellung einer keramiksuspension
DE3809693A1 (de) * 1988-03-23 1989-10-12 Hoechst Ceram Tec Ag Verfahren zur herstellung von keramikfoliengiessmassen fuer duennfilmschaltungen
US5089455A (en) * 1989-08-11 1992-02-18 Corning Incorporated Thin flexible sintered structures
GB9016690D0 (en) * 1990-07-30 1990-09-12 Tioxide Group Services Ltd Ceramic green bodies
US5316989A (en) * 1991-05-08 1994-05-31 Gilbert James Method for making a smooth-surface ceramic
US5279779A (en) * 1991-10-29 1994-01-18 Indresco, Inc. High alumina insulating refractory product and method for making same
DE4233015C1 (de) * 1992-10-01 1993-10-28 Veitscher Magnesitwerke Ag Bindemittel für keramische Massen
DE4302795C1 (de) * 1993-02-02 1994-08-25 Hoechst Ceram Tec Ag Verfahren zur Herstellung eines dichtgesinterten, plattenförmigen keramischen Formteils aus Aluminiumoxid mit verbesserter Temperaturwechselbeständigkeit, Formteil sowie seine Verwendung
EP0857702B1 (de) * 1994-11-09 2000-08-23 Ngk Insulators, Ltd. Verfahren zur Herstellung eines keramischen Substrates
EP1532082A1 (de) * 2002-07-10 2005-05-25 Koninklijke Philips Electronics N.V. Transparentes polykristallin aluminumoxid
US20060038901A1 (en) * 2004-08-17 2006-02-23 Pictureflow, Llc. System and method for recording dynamic range of a photograph's luminance
CN111201208B (zh) * 2017-10-05 2023-05-23 阔斯泰公司 氧化铝质烧结体及其制造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966719A (en) * 1954-06-15 1961-01-03 American Lava Corp Manufacture of ceramics
GB1186570A (en) * 1966-12-20 1970-04-02 Karl Alfred Kappes Method of Making Ceramic Articles and the Product Thereof
US3507944A (en) * 1968-09-09 1970-04-21 Du Pont Refractory slurry and method of casting utilizing alumina coated silica solbinder and hexamethylenetetramine as a setting agent
US3698923A (en) * 1970-05-06 1972-10-17 Western Electric Co Alumina substrates
JPS5037806A (de) * 1973-06-27 1975-04-08
JPS5110813A (en) * 1974-07-16 1976-01-28 Fujitsu Ltd Seramitsukukibanno seizohoho
JPS5463399A (en) * 1977-10-31 1979-05-22 Fujitsu Ltd Preparing alumina substrate
JPS5524813A (en) * 1978-08-03 1980-02-22 Showa Denko Kk Alumina grinding grain
NZ210805A (en) * 1984-01-19 1988-04-29 Norton Co Aluminous abrasive grits or shaped bodies

Also Published As

Publication number Publication date
KR870003952A (ko) 1987-05-06
KR930006335B1 (ko) 1993-07-14
CA1272872A (en) 1990-08-21
US4678762A (en) 1987-07-07
EP0190668A1 (de) 1986-08-13

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