JPS6468903A - Manufacture of permanent magnet - Google Patents

Manufacture of permanent magnet

Info

Publication number
JPS6468903A
JPS6468903A JP62225900A JP22590087A JPS6468903A JP S6468903 A JPS6468903 A JP S6468903A JP 62225900 A JP62225900 A JP 62225900A JP 22590087 A JP22590087 A JP 22590087A JP S6468903 A JPS6468903 A JP S6468903A
Authority
JP
Japan
Prior art keywords
coupling agent
fine powder
alloy
powder
implementing
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
JP62225900A
Other languages
Japanese (ja)
Inventor
Kazuo Matsui
Kazuhiko Tachikawa
Masakuni Kamiya
Hirofumi Nakano
Yoshio Matsuo
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.)
FDK Corp
Original Assignee
FDK Corp
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 FDK Corp filed Critical FDK Corp
Priority to JP62225900A priority Critical patent/JPS6468903A/en
Publication of JPS6468903A publication Critical patent/JPS6468903A/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
    • H01F1/0572—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 with a protective layer

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)

Abstract

PURPOSE:To improve working efficiency without causing any oxidation or ignition while being treated in the air by implementing a surface treatment on Nd-Fe-B alloy fine powder using a coupling agent. CONSTITUTION:An Nd-Fe-B alloy, which is represented by a composition formula Nd13Dy2Fe67Co10B8, is granulated. When implementing a surface treatment of the obtained alloy powder using silane coupling agent powder, the ignition temperature thereof increases while the variation decreases. The coupling agent is removed while being evacuated after forming by compression the fine powder whose surface has been treated by the coupling agent. The fine powder is then baked at a pressure of 10 torr in Ar and an aging treatment is followed in an Ar atmosphere.
JP62225900A 1987-09-09 1987-09-09 Manufacture of permanent magnet Pending JPS6468903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62225900A JPS6468903A (en) 1987-09-09 1987-09-09 Manufacture of permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62225900A JPS6468903A (en) 1987-09-09 1987-09-09 Manufacture of permanent magnet

Publications (1)

Publication Number Publication Date
JPS6468903A true JPS6468903A (en) 1989-03-15

Family

ID=16836645

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62225900A Pending JPS6468903A (en) 1987-09-09 1987-09-09 Manufacture of permanent magnet

Country Status (1)

Country Link
JP (1) JPS6468903A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0314204A (en) * 1989-06-07 1991-01-22 Ind Technol Res Inst Manufacture of rare earth magnet
US7037395B2 (en) 2001-06-07 2006-05-02 The Yokohama Rubber Co.,Ltd. Pneumatic tire and method of manufacturing the sane
JP2009259955A (en) * 2008-04-15 2009-11-05 Nitto Denko Corp Permanent magnet and process for producing permanent magnet
JP2009259956A (en) * 2008-04-15 2009-11-05 Nitto Denko Corp Permanent magnet and process for producing permanent magnet
WO2011125590A1 (en) * 2010-03-31 2011-10-13 日東電工株式会社 Permanent magnet and manufacturing method for permanent magnet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567107A (en) * 1978-11-14 1980-05-21 Toshiba Corp Preparing method of permanent magnet
JPS62123702A (en) * 1985-11-25 1987-06-05 Sumitomo Metal Mining Co Ltd Resin magnet composition
JPS62185304A (en) * 1986-02-10 1987-08-13 Tohoku Metal Ind Ltd Manufacture of composite magnet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567107A (en) * 1978-11-14 1980-05-21 Toshiba Corp Preparing method of permanent magnet
JPS62123702A (en) * 1985-11-25 1987-06-05 Sumitomo Metal Mining Co Ltd Resin magnet composition
JPS62185304A (en) * 1986-02-10 1987-08-13 Tohoku Metal Ind Ltd Manufacture of composite magnet

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0314204A (en) * 1989-06-07 1991-01-22 Ind Technol Res Inst Manufacture of rare earth magnet
US7037395B2 (en) 2001-06-07 2006-05-02 The Yokohama Rubber Co.,Ltd. Pneumatic tire and method of manufacturing the sane
US7588064B2 (en) 2001-06-07 2009-09-15 The Yokoham Rubber Co., Ltd. Pneumatic tire and method of manufacturing the same
JP2009259955A (en) * 2008-04-15 2009-11-05 Nitto Denko Corp Permanent magnet and process for producing permanent magnet
JP2009259956A (en) * 2008-04-15 2009-11-05 Nitto Denko Corp Permanent magnet and process for producing permanent magnet
US8500922B2 (en) 2008-04-15 2013-08-06 Nitto Denko Corporation Permanent magnet and process for producing permanent magnet
WO2011125590A1 (en) * 2010-03-31 2011-10-13 日東電工株式会社 Permanent magnet and manufacturing method for permanent magnet
JP2011228657A (en) * 2010-03-31 2011-11-10 Nitto Denko Corp Permanent magnet, and method for manufacturing permanent magnet
CN102576590A (en) * 2010-03-31 2012-07-11 日东电工株式会社 Permanent magnet and manufacturing method for permanent magnet
US8480818B2 (en) 2010-03-31 2013-07-09 Nitto Denko Corporation Permanent magnet and manufacturing method thereof

Similar Documents

Publication Publication Date Title
JPS542783A (en) Production of pressure or differential pressure measuring apparatus
JPS6468903A (en) Manufacture of permanent magnet
JPS549365A (en) Brake booster for vehicle
GB1504501A (en) Method of fabricating a vacuum interrupter
JPS5216966A (en) Magnetron
JPS529109A (en) Overload protection for turbo compressor motor
JPS52135659A (en) Magnetron and its manufacturing method
JPS5210908A (en) Operation method for oil-cooled positive-displacement rotary compresso r
JPS5243107A (en) Rotary compressor
CA2053360A1 (en) Sintered ceramic body, a method of making the same and spark plug insulator made therefrom
JPS5346262A (en) Manufacture for magnetron
GB899398A (en) A method of producing aluminium nitride which is stable when exposed to moist air, and the use of the same for producing dense compacts
JPS53112052A (en) Magnetron
JPS5236858A (en) Electric cleaner
JPS5366808A (en) Preparation of pure iron and ferrous sintered material
JPS5425299A (en) Method of producing silicone nitride
JPS5228708A (en) Flly closed-type electric compressor
JPS5434109A (en) Compressor
JPS5544542A (en) Corrosion-resistant sintered parts and production thereof
JPS51147010A (en) A frame for the main body of the all closed motor driven compressor
JPS53115095A (en) Preparation of porcelain electron articles
JPS5251777A (en) Metal vapor discharge lamp
JPS5358178A (en) Metal-contained glass structure
JPS5379295A (en) Method for manufacturing magnetic material sintered with silicon and iron
JPS51122377A (en) Manufacturing method of glass sealed semiconductor