JPS56155508A - Manufacture of oxide permanent magnet - Google Patents

Manufacture of oxide permanent magnet

Info

Publication number
JPS56155508A
JPS56155508A JP5768780A JP5768780A JPS56155508A JP S56155508 A JPS56155508 A JP S56155508A JP 5768780 A JP5768780 A JP 5768780A JP 5768780 A JP5768780 A JP 5768780A JP S56155508 A JPS56155508 A JP S56155508A
Authority
JP
Japan
Prior art keywords
mixed
powders
sintered
mold
average grain
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.)
Granted
Application number
JP5768780A
Other languages
Japanese (ja)
Other versions
JPS6050324B2 (en
Inventor
Shigeo Niitsuma
Keiichi Honda
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.)
Tokin Corp
Original Assignee
Tohoku Metal Industries 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 Tohoku Metal Industries Ltd filed Critical Tohoku Metal Industries Ltd
Priority to JP55057687A priority Critical patent/JPS6050324B2/en
Publication of JPS56155508A publication Critical patent/JPS56155508A/en
Publication of JPS6050324B2 publication Critical patent/JPS6050324B2/en
Expired 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
    • C04B35/26—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Magnetic Ceramics (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE:To contrive the improvement of a magnetic characteristic without loosing moldability by a method wherein powders which are of over 1.0mum and under 1.0mum in average grain size are mixed up to mold a magnetic field and sintered, in the grinding process of MO.6Fe2O3 (M is a kind of Ba, Sr and Pb.). CONSTITUTION:Raw materials BaCO3 and Fe2O3 are weighed, mixed with alumina for inhibiting a crystal growth such as calcium carbonate for accelerating ferrous and baked primarily and then, ground by means of a wet grinder to obtain the powders whose average grain sizes are over 1.0mum and under 1.0mum. The both powders are mixed up together to mold the field and to be sintered. Thereby, the orientation degree and density can be improved and the magnetic characteristic enables to largely be improved.
JP55057687A 1980-04-30 1980-04-30 Manufacturing method of oxide permanent magnet Expired JPS6050324B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55057687A JPS6050324B2 (en) 1980-04-30 1980-04-30 Manufacturing method of oxide permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55057687A JPS6050324B2 (en) 1980-04-30 1980-04-30 Manufacturing method of oxide permanent magnet

Publications (2)

Publication Number Publication Date
JPS56155508A true JPS56155508A (en) 1981-12-01
JPS6050324B2 JPS6050324B2 (en) 1985-11-08

Family

ID=13062848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55057687A Expired JPS6050324B2 (en) 1980-04-30 1980-04-30 Manufacturing method of oxide permanent magnet

Country Status (1)

Country Link
JP (1) JPS6050324B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272932A2 (en) * 1986-12-24 1988-06-29 Maghemite Inc. Production of strontium ferrite magnets

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007129168A (en) * 2005-11-07 2007-05-24 Kaneka Corp Resin magnet composition and method of manufacturing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272932A2 (en) * 1986-12-24 1988-06-29 Maghemite Inc. Production of strontium ferrite magnets
EP0272932A3 (en) * 1986-12-24 1989-06-14 Maghemite Inc. Production of strontium ferrite magnets

Also Published As

Publication number Publication date
JPS6050324B2 (en) 1985-11-08

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