JPS6427204A - Manufacture of permanent magnet - Google Patents

Manufacture of permanent magnet

Info

Publication number
JPS6427204A
JPS6427204A JP63015164A JP1516488A JPS6427204A JP S6427204 A JPS6427204 A JP S6427204A JP 63015164 A JP63015164 A JP 63015164A JP 1516488 A JP1516488 A JP 1516488A JP S6427204 A JPS6427204 A JP S6427204A
Authority
JP
Japan
Prior art keywords
grain size
average grain
powder
metal
magnetic powder
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.)
Pending
Application number
JP63015164A
Other languages
Japanese (ja)
Inventor
Toru Fujiwara
Chomei Matsushima
Ryoichi Tawara
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP63015164A priority Critical patent/JPS6427204A/en
Publication of JPS6427204A publication Critical patent/JPS6427204A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01F1/04—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 metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together bonded together

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

PURPOSE:To obtain a low cost bond magnet having a high coersive force by using a powder consisting of R-Fe-B (R is rare earth metal element) and having a particular average grain size, which has completed heat processing together with reduction agent consisting of metal, as a magnetic powder. CONSTITUTION:As a magnetic powder, the power, consisting of R-Fe-B alloy and having average grain size of 1-100mum, having completed the heat processing together with a reduction agent consisting of metal, is used. This power is then ejected for molding with a binder. The magnetic powder, in this case, has already eliminated adverse effect of oxidation to be applied on the magnetic characteristic by the heat processing together with a reduction agent consisting of metal. Therefore, a bond magnet obtained assures excellent magnetic characteristic. When an average grain size of magnetic powder is 1mum or more, since a specific surface area is small and it is inactive, the oxidation of powder does not proceed easily during manufacture. Moreover, when the average grain size is 100mum or less, field orientation may occur easily. Therefore, sufficient magnetic characteristic may be acquired stably and a low cost bond magnet can be obtained because R-Fe-B material is comparatively cheap.
JP63015164A 1987-04-24 1988-01-26 Manufacture of permanent magnet Pending JPS6427204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63015164A JPS6427204A (en) 1987-04-24 1988-01-26 Manufacture of permanent magnet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10230787 1987-04-24
JP63015164A JPS6427204A (en) 1987-04-24 1988-01-26 Manufacture of permanent magnet

Publications (1)

Publication Number Publication Date
JPS6427204A true JPS6427204A (en) 1989-01-30

Family

ID=26351272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63015164A Pending JPS6427204A (en) 1987-04-24 1988-01-26 Manufacture of permanent magnet

Country Status (1)

Country Link
JP (1) JPS6427204A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6740707B2 (en) 2001-01-31 2004-05-25 Toyoda Gosei Co., Ltd. Fuel system part
JP2008261003A (en) * 2007-04-11 2008-10-30 Toda Kogyo Corp Sm-Fe-N-BASED MAGNETIC PARTICLE POWDER, ITS PRODUCTION METHOD, RESIN COMPOSITION FOR BOND MAGNET CONTAINING THE Sm-Fe-N-BASED MAGNETIC PARTICLE POWDER, AND BOND MAGNET

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6740707B2 (en) 2001-01-31 2004-05-25 Toyoda Gosei Co., Ltd. Fuel system part
JP2008261003A (en) * 2007-04-11 2008-10-30 Toda Kogyo Corp Sm-Fe-N-BASED MAGNETIC PARTICLE POWDER, ITS PRODUCTION METHOD, RESIN COMPOSITION FOR BOND MAGNET CONTAINING THE Sm-Fe-N-BASED MAGNETIC PARTICLE POWDER, AND BOND MAGNET

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