JPS5645002A - Preparation of magnet of rare earth cobalt - Google Patents

Preparation of magnet of rare earth cobalt

Info

Publication number
JPS5645002A
JPS5645002A JP12074079A JP12074079A JPS5645002A JP S5645002 A JPS5645002 A JP S5645002A JP 12074079 A JP12074079 A JP 12074079A JP 12074079 A JP12074079 A JP 12074079A JP S5645002 A JPS5645002 A JP S5645002A
Authority
JP
Japan
Prior art keywords
magnetic field
ingot
powder
desired shape
magnet
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
JP12074079A
Other languages
Japanese (ja)
Inventor
Takashi Ishii
Mitsuhiro Nagata
Jiro Shimizu
Naoyuki Sori
Hideki Yamamiya
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 JP12074079A priority Critical patent/JPS5645002A/en
Publication of JPS5645002A publication Critical patent/JPS5645002A/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

Abstract

PURPOSE:To obtain a highly efficient magnet of a rare earth cobalt in mass production by forming an ingot on melting and crushing it into powder, which is then formed into a desired shape in the magnetic field by wet or dry method before being dried. CONSTITUTION:Co and Fe are melted in a vacuum, to which Sm, Cu and Ti compounded in a given ratio are added to form an ingot. Then the ingot is crushed into powder having a diameter of 3-5mu, which is inserted into a metal mold in the magnetic field so as to be sufficiently dipped in ethyl alcohol to form into a desired shape, and pressed under a magnetic field strength of 4,000-20,000 Oe and a pressure of 0.2-2ton/cm<2> to obtain a high-density compressed body. Moreover, in the dry method, the powder is mixed with binder, inserted into a metal mold to form into a desired shape, and pressed under a similar magnetic field and pressure to obtain a high-density compressed body, which is dried at a high temperature to obtain a highly efficient magnet.
JP12074079A 1979-09-21 1979-09-21 Preparation of magnet of rare earth cobalt Pending JPS5645002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12074079A JPS5645002A (en) 1979-09-21 1979-09-21 Preparation of magnet of rare earth cobalt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12074079A JPS5645002A (en) 1979-09-21 1979-09-21 Preparation of magnet of rare earth cobalt

Publications (1)

Publication Number Publication Date
JPS5645002A true JPS5645002A (en) 1981-04-24

Family

ID=14793804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12074079A Pending JPS5645002A (en) 1979-09-21 1979-09-21 Preparation of magnet of rare earth cobalt

Country Status (1)

Country Link
JP (1) JPS5645002A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61287104A (en) * 1985-06-13 1986-12-17 Hitachi Metals Ltd Method for pulverization of permanent magnet alloy powder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61287104A (en) * 1985-06-13 1986-12-17 Hitachi Metals Ltd Method for pulverization of permanent magnet alloy powder

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