JPS644421A - Manufacture of anisotropic permanent magnet material - Google Patents

Manufacture of anisotropic permanent magnet material

Info

Publication number
JPS644421A
JPS644421A JP15849287A JP15849287A JPS644421A JP S644421 A JPS644421 A JP S644421A JP 15849287 A JP15849287 A JP 15849287A JP 15849287 A JP15849287 A JP 15849287A JP S644421 A JPS644421 A JP S644421A
Authority
JP
Japan
Prior art keywords
temp
alloy
permanent magnet
film
magnetic
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
JP15849287A
Other languages
Japanese (ja)
Inventor
Makoto Saito
Shinichiro Yahagi
Norio Yoshikawa
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel 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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP15849287A priority Critical patent/JPS644421A/en
Publication of JPS644421A publication Critical patent/JPS644421A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/007—Heat treatment of ferrous alloys containing Co

Abstract

PURPOSE:To easily manufacture an anisotropic permanent magnet material, by subjecting a molten rare-earth element-iron-boron alloy to super rapid cooling to form an amorphous alloy, heat-treating the above alloy at low temp. in a magnetic field, and then applying heat treatment to the above in a magnetic or nonmagnetic field at a temp. in a crystallization temp. region. CONSTITUTION:A molten alloy having a composition which consists of one or >=2 kinds of rare-earth elements composed principally of Nd, Fe, and B and in which a part of Fe is substituted by <=30% Co is poured onto a rapidly rotating water-cooled roll made of Cu to undergo super rapid cooling, by which a thin amorphous alloy film is prepared. This film is subjected to heat treatment in a magnetic field of >=5kilooersted at a temp. as low as 100-300 deg.C for >=2hr and then heated in a magnetic or nonmagnetic field up to a temp. of crystallization temp. or above, 600 deg.C, for >=1hr. This film is crushed, kneaded by means of a binder such as liquid epoxy resin, and press-compacted in a magnetic field, by which the anisotropic permanent magnet can be manufactured.
JP15849287A 1987-06-25 1987-06-25 Manufacture of anisotropic permanent magnet material Pending JPS644421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15849287A JPS644421A (en) 1987-06-25 1987-06-25 Manufacture of anisotropic permanent magnet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15849287A JPS644421A (en) 1987-06-25 1987-06-25 Manufacture of anisotropic permanent magnet material

Publications (1)

Publication Number Publication Date
JPS644421A true JPS644421A (en) 1989-01-09

Family

ID=15672924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15849287A Pending JPS644421A (en) 1987-06-25 1987-06-25 Manufacture of anisotropic permanent magnet material

Country Status (1)

Country Link
JP (1) JPS644421A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002162666A (en) * 2000-11-27 2002-06-07 Nidec Copal Corp Shutter device
JP2006098522A (en) * 2004-09-28 2006-04-13 Canon Electronics Inc Light quantity adjusting device and optical equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002162666A (en) * 2000-11-27 2002-06-07 Nidec Copal Corp Shutter device
JP2006098522A (en) * 2004-09-28 2006-04-13 Canon Electronics Inc Light quantity adjusting device and optical equipment

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