ZA868550B - Method for preparing alumina powders for making polycrystalline bodies - Google Patents

Method for preparing alumina powders for making polycrystalline bodies

Info

Publication number
ZA868550B
ZA868550B ZA868550A ZA868550A ZA868550B ZA 868550 B ZA868550 B ZA 868550B ZA 868550 A ZA868550 A ZA 868550A ZA 868550 A ZA868550 A ZA 868550A ZA 868550 B ZA868550 B ZA 868550B
Authority
ZA
South Africa
Prior art keywords
alumina powders
preparing alumina
making polycrystalline
polycrystalline bodies
bodies
Prior art date
Application number
ZA868550A
Other languages
English (en)
Inventor
Ralph Bauer
Ronald W Trischuk
Arup K Khaund
Joseph Similia
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 ZA868550B publication Critical patent/ZA868550B/xx

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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/14—Pore volume

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
ZA868550A 1985-11-21 1986-11-11 Method for preparing alumina powders for making polycrystalline bodies ZA868550B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/800,494 US4657754A (en) 1985-11-21 1985-11-21 Aluminum oxide powders and process

Publications (1)

Publication Number Publication Date
ZA868550B true ZA868550B (en) 1987-07-29

Family

ID=25178539

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA868550A ZA868550B (en) 1985-11-21 1986-11-11 Method for preparing alumina powders for making polycrystalline bodies

Country Status (9)

Country Link
US (1) US4657754A (xx)
EP (1) EP0224118B1 (xx)
JP (1) JPH07100608B2 (xx)
AU (1) AU591944B2 (xx)
BR (1) BR8605726A (xx)
CA (1) CA1250130A (xx)
DE (1) DE3688775T2 (xx)
ES (1) ES2043597T3 (xx)
ZA (1) ZA868550B (xx)

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US4797269A (en) * 1988-02-08 1989-01-10 Norton Company Production of beta alumina by seeding and beta alumina produced thereby
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US5219806A (en) * 1990-07-16 1993-06-15 Minnesota Mining And Manufacturing Company Alpha phase seeding of transition alumina using chromium oxide-based nucleating agents
US5139978A (en) * 1990-07-16 1992-08-18 Minnesota Mining And Manufacturing Company Impregnation method for transformation of transition alumina to a alpha alumina
US5114802A (en) * 1990-09-05 1992-05-19 Alcan International Limited Caustic-based metal battery with seeded recirculating electrolyte
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Also Published As

Publication number Publication date
JPH07100608B2 (ja) 1995-11-01
DE3688775D1 (de) 1993-09-02
AU6535786A (en) 1987-05-28
US4657754A (en) 1987-04-14
EP0224118B1 (en) 1993-07-28
ES2043597T3 (es) 1994-01-01
BR8605726A (pt) 1987-08-18
CA1250130A (en) 1989-02-21
JPS62128918A (ja) 1987-06-11
DE3688775T2 (de) 1993-12-23
EP0224118A1 (en) 1987-06-03
AU591944B2 (en) 1989-12-21

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