IT942675B - Procedimento e dispositivo per la formatura di corpi ossiceramici di magneti permanenti ad elevata anisotropia - Google Patents

Procedimento e dispositivo per la formatura di corpi ossiceramici di magneti permanenti ad elevata anisotropia

Info

Publication number
IT942675B
IT942675B IT70358/71A IT7035871A IT942675B IT 942675 B IT942675 B IT 942675B IT 70358/71 A IT70358/71 A IT 70358/71A IT 7035871 A IT7035871 A IT 7035871A IT 942675 B IT942675 B IT 942675B
Authority
IT
Italy
Prior art keywords
oxyceramic
bodies
procedure
forming
permanent magnets
Prior art date
Application number
IT70358/71A
Other languages
English (en)
Original Assignee
Cochardt H
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 Cochardt H filed Critical Cochardt H
Application granted granted Critical
Publication of IT942675B publication Critical patent/IT942675B/it

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets
    • 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
    • C04B35/26—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 ferrites
    • C04B35/2683—Other ferrites containing alkaline earth metals or lead
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • 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
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/605—Making or treating the green body or pre-form in a magnetic field
    • 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
    • C04B2235/70—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
    • C04B2235/787—Oriented grains
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/58—Processes of forming magnets
IT70358/71A 1970-10-15 1971-10-13 Procedimento e dispositivo per la formatura di corpi ossiceramici di magneti permanenti ad elevata anisotropia IT942675B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8094170A 1970-10-15 1970-10-15

Publications (1)

Publication Number Publication Date
IT942675B true IT942675B (it) 1973-04-02

Family

ID=22160643

Family Applications (1)

Application Number Title Priority Date Filing Date
IT70358/71A IT942675B (it) 1970-10-15 1971-10-13 Procedimento e dispositivo per la formatura di corpi ossiceramici di magneti permanenti ad elevata anisotropia

Country Status (5)

Country Link
US (1) US3755515A (it)
DE (1) DE2149907A1 (it)
FR (1) FR2110446B3 (it)
GB (1) GB1358423A (it)
IT (1) IT942675B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1508490A (en) * 1974-12-27 1978-04-26 Osaka Packing Apparatus for moulding a slurry of calcium silicate crystals
GB1602276A (en) * 1977-08-01 1981-11-11 Nat Res Dev Method of and apparatus for moulding magnet compacts
IT1208358B (it) * 1987-03-31 1989-06-12 Brussino Massimo Procedimento per la produzione di laminato plastico magnetico e laminato magnetico ottenuto con tale procedimento
DE3726667A1 (de) * 1987-08-11 1989-02-23 Bayer Ag Feinteilige magnetische borhaltige hexaferritpigmente, verfahren zu ihrer herstellung sowie deren verwendung
US5648039A (en) * 1992-04-24 1997-07-15 Tdk Corporation Process for the production of anisotropic ferrite magnets
US5945028A (en) * 1992-04-24 1999-08-31 Tdk Corporation Hexagonal system ferrite particles and their production process
DE112008002073T5 (de) * 2007-08-01 2010-08-19 Fisher & Paykel Appliances Ltd., East Tamaki Verbessertes Haushaltsgerät, Rotor und Magnetelement

Also Published As

Publication number Publication date
GB1358423A (en) 1974-07-03
FR2110446A3 (it) 1972-06-02
US3755515A (en) 1973-08-28
FR2110446B3 (it) 1974-06-07
DE2149907A1 (de) 1972-04-27

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