IT8223616A0 - Procedimento ad umido per lapreparazione di ferrite di struttura a magnetoplumbite in forma di particelle fini. - Google Patents

Procedimento ad umido per lapreparazione di ferrite di struttura a magnetoplumbite in forma di particelle fini.

Info

Publication number
IT8223616A0
IT8223616A0 IT8223616A IT2361682A IT8223616A0 IT 8223616 A0 IT8223616 A0 IT 8223616A0 IT 8223616 A IT8223616 A IT 8223616A IT 2361682 A IT2361682 A IT 2361682A IT 8223616 A0 IT8223616 A0 IT 8223616A0
Authority
IT
Italy
Prior art keywords
ferrite
preparation
fine particles
wet process
magnetoplumbite structure
Prior art date
Application number
IT8223616A
Other languages
English (en)
Other versions
IT1153209B (it
Inventor
Masanori Hayakawa
Satoshi Nishimura
Original Assignee
Central Glass Co Ltd
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 Central Glass Co Ltd filed Critical Central Glass Co Ltd
Publication of IT8223616A0 publication Critical patent/IT8223616A0/it
Application granted granted Critical
Publication of IT1153209B publication Critical patent/IT1153209B/it

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—Ferrites
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • C01G49/0036—Mixed oxides or hydroxides containing one alkaline earth metal, magnesium or lead
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/009—Compounds containing, besides iron, two or more other elements, with the exception of oxygen or hydrogen
    • 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
    • H01F1/11—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 in the form of particles
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • C01P2004/22—Particle morphology extending in two dimensions, e.g. plate-like with a polygonal circumferential shape
    • 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
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)
IT23616/82A 1981-10-16 1982-10-05 Procedimento ad umido per la preparazione di ferrite di struttura a magnetoplumbite in forma di particelle fini IT1153209B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56164091A JPS6020327B2 (ja) 1981-10-16 1981-10-16 マグネトプランバイト型フエライト微粒子の湿式製造法

Publications (2)

Publication Number Publication Date
IT8223616A0 true IT8223616A0 (it) 1982-10-05
IT1153209B IT1153209B (it) 1987-01-14

Family

ID=15786596

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23616/82A IT1153209B (it) 1981-10-16 1982-10-05 Procedimento ad umido per la preparazione di ferrite di struttura a magnetoplumbite in forma di particelle fini

Country Status (6)

Country Link
US (1) US4512906A (it)
JP (1) JPS6020327B2 (it)
DE (1) DE3238309A1 (it)
FR (1) FR2514750B1 (it)
GB (1) GB2108100B (it)
IT (1) IT1153209B (it)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161002A (ja) * 1983-02-05 1984-09-11 Toda Kogyo Corp 磁気記録用板状Ｂａフェライト微粒子粉末及びその製造法
GB2144114B (en) * 1983-07-28 1986-08-06 Central Glass Co Ltd Preparing ferrite of magnetoplumbite structure
JPS6033218A (ja) * 1983-07-28 1985-02-20 Central Glass Co Ltd マグネトプランバイト型フエライト微粒子の湿式製造法
DE3417793A1 (de) * 1984-05-14 1985-11-14 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung feinteiliger, nadelfoermiger und hochkoerzitiver hexagonaler ferrite sowie ihre verwendung zur herstellung magnetischer aufzeichnungstraeger und plastoferrite
JPH075320B2 (ja) * 1986-01-31 1995-01-25 ソニー株式会社 バリウムフエライト粉末の製法
US4781852A (en) * 1986-10-24 1988-11-01 Olin Corporation Process for making selected doped barium and strontium hexaferrite particles
FR2660650B1 (fr) * 1990-04-09 1993-01-08 Centre Nat Rech Scient Procede de preparation de particules d'hexaferrites.
US6599493B2 (en) 2001-07-27 2003-07-29 Ut-Battelle, Llc Method for preparing hydrous iron oxide gels and spherules
US6492016B1 (en) 2001-07-27 2002-12-10 Ut-Battelle, Llc Method for preparing spherical ferrite beads and use thereof
CN102180522B (zh) * 2011-03-28 2012-11-28 陕西宏炬电子科技有限公司 一种窄粒径分布纳米磁性氧化铁的可控制备方法
WO2020116125A1 (ja) 2018-12-04 2020-06-11 信越化学工業株式会社 光硬化性フルオロポリエーテル系エラストマー組成物の塗膜形成方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1290656A (fr) * 1961-05-29 1962-04-13 Ici Ltd Procédé de fabrication de substances magnétiques non métalliques
GB1142214A (en) * 1966-02-21 1969-02-05 Nippon Electric Co Improvements in or relating to ferrite particles and process for manufacturing same
JPS4913317B1 (it) * 1970-03-02 1974-03-30
US3855374A (en) * 1970-07-02 1974-12-17 Gen Motors Corp Method of making magnetically-anisotropic permanent magnets
BE789187A (fr) * 1971-09-24 1973-03-22 Montedison Spa Procede de preparation en continu de ferrites durs a partir d'oxydes defer
US4025449A (en) * 1975-10-21 1977-05-24 The Dow Chemical Company Process to produce barium and strontium ferrite
US4279763A (en) * 1980-04-09 1981-07-21 Aimants Ugimag S.A. Process of preparing ferrite powders

Also Published As

Publication number Publication date
US4512906A (en) 1985-04-23
GB2108100B (en) 1985-05-09
IT1153209B (it) 1987-01-14
JPS5869727A (ja) 1983-04-26
DE3238309A1 (de) 1983-04-28
GB2108100A (en) 1983-05-11
DE3238309C2 (it) 1988-03-17
FR2514750A1 (fr) 1983-04-22
FR2514750B1 (fr) 1986-07-04
JPS6020327B2 (ja) 1985-05-21

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