JPS5754304A - Manufacture of permanent magnet - Google Patents

Manufacture of permanent magnet

Info

Publication number
JPS5754304A
JPS5754304A JP55130358A JP13035880A JPS5754304A JP S5754304 A JPS5754304 A JP S5754304A JP 55130358 A JP55130358 A JP 55130358A JP 13035880 A JP13035880 A JP 13035880A JP S5754304 A JPS5754304 A JP S5754304A
Authority
JP
Japan
Prior art keywords
magnetic
rare
orientation
alloy powder
earth metal
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
JP55130358A
Other languages
Japanese (ja)
Inventor
Itaru Okonogi
Tatsuya Shimoda
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP55130358A priority Critical patent/JPS5754304A/en
Publication of JPS5754304A publication Critical patent/JPS5754304A/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 increase the degree of orientation of magnetic alloy powder and thereby to improve performance by a method wherein the magnetic alloy powder of a rare-earth metal compound whose main components are rare-earth and transition metals is mixed with specified quantities of orientation assistant and organic resin binder and molded and later the binder is set by heating. CONSTITUTION:An alloy ingot prepared by melting and casing a composition of the rare-earth metal compound whose main component is an R2TM17 type phase consisting of the rare-earth metal (R) and the transition metal (TM) is subjected to solution treatment in the ambience of Ar gas and at a temperature of 1,160 deg.C and then to the two-staged aging process at temperatures of 800 deg.C and 750 deg.C. It is pulverized thereafter into particles and formed into the magnetic alloy powder through particle size adjustment. The magnetic alloy powder thus formed is mixed with two kinds of substances, that is, the orientation assistant, such as pulverized stearic acid and zinc stearate, of 0.005-1.5% in weight ratio and the organic resin binder, such as epoxy, of 0.5- 10% and is subjected to pressure molding in a magnetic field and then to the curing process at a temperature of 150 deg.C. By this constitution, the degree of orientation of the magnetic powder is increased, the volume packing ratio of the magnetic body is raised and thus the magnetic performance can be improved.
JP55130358A 1980-09-19 1980-09-19 Manufacture of permanent magnet Pending JPS5754304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55130358A JPS5754304A (en) 1980-09-19 1980-09-19 Manufacture of permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55130358A JPS5754304A (en) 1980-09-19 1980-09-19 Manufacture of permanent magnet

Publications (1)

Publication Number Publication Date
JPS5754304A true JPS5754304A (en) 1982-03-31

Family

ID=15032466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55130358A Pending JPS5754304A (en) 1980-09-19 1980-09-19 Manufacture of permanent magnet

Country Status (1)

Country Link
JP (1) JPS5754304A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125752A2 (en) * 1983-05-09 1984-11-21 General Motors Corporation Bonded rare earth-iron magnets
JPS60220907A (en) * 1984-04-18 1985-11-05 Seiko Epson Corp Ferromagnetic resin composition
JPS60220920A (en) * 1984-04-18 1985-11-05 Seiko Epson Corp Manufacture of permanent magnet
JPH01251702A (en) * 1988-03-31 1989-10-06 Tokin Corp Plastic magnet and manufacture thereof
JPH0246704A (en) * 1988-08-09 1990-02-16 Tokin Corp Manufacture of compound magnet
EP1093133A3 (en) * 1999-10-15 2001-12-05 Matsushita Electric Industrial Co., Ltd. Rare earth resin magnet, magnet rotor, magnet motor using the same, and its manufacturing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4986896A (en) * 1972-12-26 1974-08-20
JPS50140898A (en) * 1973-02-21 1975-11-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4986896A (en) * 1972-12-26 1974-08-20
JPS50140898A (en) * 1973-02-21 1975-11-12

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125752A2 (en) * 1983-05-09 1984-11-21 General Motors Corporation Bonded rare earth-iron magnets
JPS60220907A (en) * 1984-04-18 1985-11-05 Seiko Epson Corp Ferromagnetic resin composition
JPS60220920A (en) * 1984-04-18 1985-11-05 Seiko Epson Corp Manufacture of permanent magnet
JPH01251702A (en) * 1988-03-31 1989-10-06 Tokin Corp Plastic magnet and manufacture thereof
JPH0246704A (en) * 1988-08-09 1990-02-16 Tokin Corp Manufacture of compound magnet
EP1093133A3 (en) * 1999-10-15 2001-12-05 Matsushita Electric Industrial Co., Ltd. Rare earth resin magnet, magnet rotor, magnet motor using the same, and its manufacturing method

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