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WO1992001646A3 - Production d'alumine de transition par germination en phase alpha au moyen d'agents de nucleation a base d'oxyde de chrome - Google Patents

Production d'alumine de transition par germination en phase alpha au moyen d'agents de nucleation a base d'oxyde de chrome Download PDF

Info

Publication number
WO1992001646A3
WO1992001646A3 PCT/US1991/003878 US9103878W WO9201646A3 WO 1992001646 A3 WO1992001646 A3 WO 1992001646A3 US 9103878 W US9103878 W US 9103878W WO 9201646 A3 WO9201646 A3 WO 9201646A3
Authority
WO
WIPO (PCT)
Prior art keywords
chromium oxide
nucleating agents
alpha phase
transition alumina
based nucleating
Prior art date
Application number
PCT/US1991/003878
Other languages
English (en)
Other versions
WO1992001646A2 (fr
Inventor
Thomas E Wood
Original Assignee
Minnesota Mining & Mfg
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
Priority claimed from US07/552,891 external-priority patent/US5139978A/en
Priority claimed from US07/552,489 external-priority patent/US5219806A/en
Application filed by Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Priority to BR919106645A priority Critical patent/BR9106645A/pt
Priority to DE69115277T priority patent/DE69115277T2/de
Priority to EP91915342A priority patent/EP0539521B1/fr
Publication of WO1992001646A2 publication Critical patent/WO1992001646A2/fr
Publication of WO1992001646A3 publication Critical patent/WO1992001646A3/fr

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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/62227—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres
    • C04B35/62231—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres based on oxide 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
    • C04B35/10—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
    • C04B35/1115—Minute sintered entities, e.g. sintered abrasive grains or shaped particles such as platelets
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1409—Abrasive particles per se
    • C09K3/1418—Abrasive particles per se obtained by division of a mass agglomerated by sintering

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Catalysts (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

L'invention se rapporte à une céramique à base d'alumine alpha améliorée et à des procédés de production de cette céramique. L'amélioration consiste à ajouter un agent de nucléation à base de chrome. Dans des modes de réalisation particulièrement utiles de la présente invention, la céramique à base d'alumine alpha améliorée est produite sous la forme de particules et de fibres abrasives.
PCT/US1991/003878 1990-07-16 1991-06-03 Production d'alumine de transition par germination en phase alpha au moyen d'agents de nucleation a base d'oxyde de chrome WO1992001646A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BR919106645A BR9106645A (pt) 1990-07-16 1991-06-03 Ceramica a base de alumina alfa tendo uma microestrutura semeada,processo de producao da mesma e artigo abrasivo
DE69115277T DE69115277T2 (de) 1990-07-16 1991-06-03 Impfen von übergangsaluminiumoxid mit keimen aus chromoxid zur gewinnung von alpha-aluminiumoxid.
EP91915342A EP0539521B1 (fr) 1990-07-16 1991-06-03 Production d'alumine de transition par germination en phase alpha au moyen d'agents de nucleation a base d'oxyde de chrome

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US552,489 1990-07-16
US07/552,891 US5139978A (en) 1990-07-16 1990-07-16 Impregnation method for transformation of transition alumina to a alpha alumina
US552,891 1990-07-16
US07/552,489 US5219806A (en) 1990-07-16 1990-07-16 Alpha phase seeding of transition alumina using chromium oxide-based nucleating agents

Publications (2)

Publication Number Publication Date
WO1992001646A2 WO1992001646A2 (fr) 1992-02-06
WO1992001646A3 true WO1992001646A3 (fr) 1992-03-05

Family

ID=27070047

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/003878 WO1992001646A2 (fr) 1990-07-16 1991-06-03 Production d'alumine de transition par germination en phase alpha au moyen d'agents de nucleation a base d'oxyde de chrome

Country Status (8)

Country Link
EP (1) EP0539521B1 (fr)
JP (1) JPH05509285A (fr)
AT (1) ATE131143T1 (fr)
AU (1) AU8443091A (fr)
BR (1) BR9106645A (fr)
CA (1) CA2086552A1 (fr)
DE (1) DE69115277T2 (fr)
WO (1) WO1992001646A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5215552A (en) * 1992-02-26 1993-06-01 Norton Company Sol-gel alumina abrasive grain
DE69302582T2 (de) * 1992-09-25 1996-10-31 Minnesota Mining & Mfg Verfahren zur herstellung von aluminiumoxid und ceroxid enthaltendem schleifkorn
CA2142466A1 (fr) * 1992-09-25 1994-04-14 Henry A. Larmie Grains abrasifs renfermant un oxyde de terre rare
EP0662072B1 (fr) * 1992-09-25 1997-04-02 Minnesota Mining And Manufacturing Company Grains abrasifs contenant de l'oxyde d'aluminium et de la zircone
CA2102656A1 (fr) * 1992-12-14 1994-06-15 Dwight D. Erickson Grain abrasif constitue d'oxyde de calcium et/ou d'oxyde de strontium
US5690707A (en) * 1992-12-23 1997-11-25 Minnesota Mining & Manufacturing Company Abrasive grain comprising manganese oxide
US5443418A (en) * 1993-03-29 1995-08-22 Norton Company Superabrasive tool
BR9408041A (pt) * 1993-11-12 1996-12-24 Minnesota Mining & Mfg Processo para preparação de grão abrasivo à base de alumina alfa cerâmico cristalino grão abrasivo e artigo abrasivo
US5593467A (en) * 1993-11-12 1997-01-14 Minnesota Mining And Manufacturing Company Abrasive grain

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370012A1 (fr) * 1976-11-09 1978-06-02 Alusuisse Procede de fabrication d'un oxyde d'aluminium dope, contenant de 0,01 a 25 % d'oxyde de chrome et/ou d'oxyde de fer
EP0200487A2 (fr) * 1985-04-30 1986-11-05 Minnesota Mining And Manufacturing Company Procédé sol-gel de fabrication de grains et produits abrasifs céramiques résistants à base d'alumine
EP0293163A2 (fr) * 1987-05-27 1988-11-30 Minnesota Mining And Manufacturing Company Particules abrasives formées par imprégnation des céramiques, leur méthode de préparation et les produits obtenus
EP0294208A2 (fr) * 1987-06-05 1988-12-07 Minnesota Mining And Manufacturing Company Corps céramiques à base d'alumine microcristalline
US4829031A (en) * 1986-08-01 1989-05-09 Research Corporation Method of preparing ceramic compositions at lower sintering temperatures
EP0324513A1 (fr) * 1984-01-19 1989-07-19 Norton Company Objet céramique moule et méthodes pour sa fabrication
EP0373765B1 (fr) * 1988-12-12 1993-12-29 Minnesota Mining And Manufacturing Company Granules abrasives en céramique à base d'oxyde d'aluminium inoculés par de l'oxyde de fer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5009676A (en) * 1989-04-28 1991-04-23 Norton Company Sintered sol gel alumina abrasive filaments

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370012A1 (fr) * 1976-11-09 1978-06-02 Alusuisse Procede de fabrication d'un oxyde d'aluminium dope, contenant de 0,01 a 25 % d'oxyde de chrome et/ou d'oxyde de fer
EP0324513A1 (fr) * 1984-01-19 1989-07-19 Norton Company Objet céramique moule et méthodes pour sa fabrication
EP0200487A2 (fr) * 1985-04-30 1986-11-05 Minnesota Mining And Manufacturing Company Procédé sol-gel de fabrication de grains et produits abrasifs céramiques résistants à base d'alumine
US4829031A (en) * 1986-08-01 1989-05-09 Research Corporation Method of preparing ceramic compositions at lower sintering temperatures
EP0293163A2 (fr) * 1987-05-27 1988-11-30 Minnesota Mining And Manufacturing Company Particules abrasives formées par imprégnation des céramiques, leur méthode de préparation et les produits obtenus
EP0294208A2 (fr) * 1987-06-05 1988-12-07 Minnesota Mining And Manufacturing Company Corps céramiques à base d'alumine microcristalline
EP0373765B1 (fr) * 1988-12-12 1993-12-29 Minnesota Mining And Manufacturing Company Granules abrasives en céramique à base d'oxyde d'aluminium inoculés par de l'oxyde de fer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 108, no. 26, 1988, Columbus, Ohio, US; abstract no. 225681W, A.K.GANGOPADHYAY ET AL.: 'FRICTION AND WEAR CHARACTERISTICS OF TITANIUM AND CHROMIUMDOPED POLYCRYSTALLINE ALUMINA' see abstract *
WORLD PATENTS INDEX LATEST Derwent Publications Ltd., London, GB; AN 84-106195 & SU,A,1 030 314 (SERGDA B P) see abstract *

Also Published As

Publication number Publication date
CA2086552A1 (fr) 1992-01-17
JPH05509285A (ja) 1993-12-22
DE69115277D1 (de) 1996-01-18
ATE131143T1 (de) 1995-12-15
BR9106645A (pt) 1993-04-20
AU8443091A (en) 1992-02-18
EP0539521B1 (fr) 1995-12-06
DE69115277T2 (de) 1996-08-08
EP0539521A1 (fr) 1993-05-05
WO1992001646A2 (fr) 1992-02-06

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