JPS54121999A - Manufacture of permanent magnet - Google Patents

Manufacture of permanent magnet

Info

Publication number
JPS54121999A
JPS54121999A JP2828278A JP2828278A JPS54121999A JP S54121999 A JPS54121999 A JP S54121999A JP 2828278 A JP2828278 A JP 2828278A JP 2828278 A JP2828278 A JP 2828278A JP S54121999 A JPS54121999 A JP S54121999A
Authority
JP
Japan
Prior art keywords
magnetic field
molded
permanent magnet
magnet powder
impregnated
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
JP2828278A
Other languages
Japanese (ja)
Inventor
Akio Ishizawa
Minoru Hashimoto
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2828278A priority Critical patent/JPS54121999A/en
Publication of JPS54121999A publication Critical patent/JPS54121999A/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
    • H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
    • H01F1/0558—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 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)

Abstract

PURPOSE:To obtain permanent magnet which is excellent in magnetic characteristics and mechanical strength by the procedure in which a poly amide-containing solution is added to a rare earth element-cobalt magnet powder and then the mixture is molded by compression in a magnetic field, then impregnated with epoxy resin, and lastly molded again by a hot press forming. CONSTITUTION:An intermetallic compound magnet powder composed of cobalt and rare earth metals, e.g., samarium, yttrium, cerium, misch metal, etc., is mixed and dispersed in an alcoholic solution of 0.01 to 5 wt.% polyamide and then the mixture is molded by compression in a magnetic field, where the intensity of magnetic field is 16 kOe for example and the pressure of molding is 3 t/cm<2> for example. Then, after the removal of solvent, the molding is impregnated with 2 wt.% (on the basis of magnet powder) epoxy resin and then subjected to a hot press forming after preheating to obtain a permanent magnet. Thus, the use of the liquid polyamide, serving as a curing agent and a lubricant, can increase magnetic characteristic and mechanical strength.
JP2828278A 1978-03-14 1978-03-14 Manufacture of permanent magnet Pending JPS54121999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2828278A JPS54121999A (en) 1978-03-14 1978-03-14 Manufacture of permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2828278A JPS54121999A (en) 1978-03-14 1978-03-14 Manufacture of permanent magnet

Publications (1)

Publication Number Publication Date
JPS54121999A true JPS54121999A (en) 1979-09-21

Family

ID=12244236

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2828278A Pending JPS54121999A (en) 1978-03-14 1978-03-14 Manufacture of permanent magnet

Country Status (1)

Country Link
JP (1) JPS54121999A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281295A2 (en) * 1987-03-03 1988-09-07 Imperial Chemical Industries Plc Process and composition for producing bonded magnet
JPS63304602A (en) * 1987-06-03 1988-12-12 Kanegafuchi Chem Ind Co Ltd Resin-bonded magnet
JPH01158629A (en) * 1987-07-27 1989-06-21 Seiko Epson Corp Actuator
JPH01294234A (en) * 1987-08-27 1989-11-28 Seiko Epson Corp Actuator
JP2010262996A (en) * 2009-04-30 2010-11-18 Hitachi Metals Ltd Rare earth permanent magnet and method of manufacturing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281295A2 (en) * 1987-03-03 1988-09-07 Imperial Chemical Industries Plc Process and composition for producing bonded magnet
JPS63304602A (en) * 1987-06-03 1988-12-12 Kanegafuchi Chem Ind Co Ltd Resin-bonded magnet
JPH01158629A (en) * 1987-07-27 1989-06-21 Seiko Epson Corp Actuator
JPH01294234A (en) * 1987-08-27 1989-11-28 Seiko Epson Corp Actuator
JP2010262996A (en) * 2009-04-30 2010-11-18 Hitachi Metals Ltd Rare earth permanent magnet and method of manufacturing the same

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