JPS5769707A - Manufacture of permanent magnet alloy - Google Patents

Manufacture of permanent magnet alloy

Info

Publication number
JPS5769707A
JPS5769707A JP55145704A JP14570480A JPS5769707A JP S5769707 A JPS5769707 A JP S5769707A JP 55145704 A JP55145704 A JP 55145704A JP 14570480 A JP14570480 A JP 14570480A JP S5769707 A JPS5769707 A JP S5769707A
Authority
JP
Japan
Prior art keywords
permanent magnet
samarium
magnet alloy
silicone
cylinder
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
JP55145704A
Other languages
Japanese (ja)
Inventor
Naoyuki Sori
Hideki Yamamiya
Tadashi Tanaka
Takashi Ishii
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 JP55145704A priority Critical patent/JPS5769707A/en
Publication of JPS5769707A publication Critical patent/JPS5769707A/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
    • H01F1/0551—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0552—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 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 eliminate the decrease in the coercive force of a permanent magnet by pulverizing samarium-cobalt permanent magnet alloy, immediately covering the surfaces of the finely pulverized powder with silicone and thereby preventing the oxidation or volatilization of samarium component. CONSTITUTION:A device which has a pulverizing cylinder 3 including an inlet 1 and an outlet 2 for organic solvent, e.g., hexane, alcohol, etc., a rotationary shaft 4 coaxially supported with the cylinder 3, rotational arms 5 implanted radially to the shaft 4, and balls 6 is used to circulate organic solvent added with silicone coil of 7-13wt% in the cylinder 3. The samarium-cobalt permanent magnet alloy is pulverized and the pulverized powder surface is covered with silicone.
JP55145704A 1980-10-20 1980-10-20 Manufacture of permanent magnet alloy Pending JPS5769707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55145704A JPS5769707A (en) 1980-10-20 1980-10-20 Manufacture of permanent magnet alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55145704A JPS5769707A (en) 1980-10-20 1980-10-20 Manufacture of permanent magnet alloy

Publications (1)

Publication Number Publication Date
JPS5769707A true JPS5769707A (en) 1982-04-28

Family

ID=15391178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55145704A Pending JPS5769707A (en) 1980-10-20 1980-10-20 Manufacture of permanent magnet alloy

Country Status (1)

Country Link
JP (1) JPS5769707A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041202A (en) * 1983-08-17 1985-03-04 Shin Etsu Chem Co Ltd Plastic magnet composition
JPS60130649A (en) * 1983-12-16 1985-07-12 Shin Etsu Chem Co Ltd Plastic magnet composition
JPS61231129A (en) * 1985-04-03 1986-10-15 Sumitomo Electric Ind Ltd Manufacture of sintered metal containing easily oxidizable element
JPS62152107A (en) * 1985-12-25 1987-07-07 Sumitomo Metal Mining Co Ltd Magnetic powder for synthetic resin magnet
JPS62259406A (en) * 1986-04-28 1987-11-11 Tohoku Metal Ind Ltd Manufacture of composite magnet
JPH0247204A (en) * 1988-08-09 1990-02-16 Tokin Corp Rare earth powder for magnet and production thereof
JPH07109501A (en) * 1993-10-06 1995-04-25 Toray Dow Corning Silicone Co Ltd Silver powder and its production

Citations (1)

* 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

Patent Citations (1)

* 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

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041202A (en) * 1983-08-17 1985-03-04 Shin Etsu Chem Co Ltd Plastic magnet composition
JPH0334642B2 (en) * 1983-08-17 1991-05-23 Shinetsu Chem Ind Co
JPS60130649A (en) * 1983-12-16 1985-07-12 Shin Etsu Chem Co Ltd Plastic magnet composition
JPS61231129A (en) * 1985-04-03 1986-10-15 Sumitomo Electric Ind Ltd Manufacture of sintered metal containing easily oxidizable element
JPH0580539B2 (en) * 1985-04-03 1993-11-09 Sumitomo Electric Industries
JPS62152107A (en) * 1985-12-25 1987-07-07 Sumitomo Metal Mining Co Ltd Magnetic powder for synthetic resin magnet
JPS62259406A (en) * 1986-04-28 1987-11-11 Tohoku Metal Ind Ltd Manufacture of composite magnet
JPH0587002B2 (en) * 1986-04-28 1993-12-15 Tokin Corp
JPH0247204A (en) * 1988-08-09 1990-02-16 Tokin Corp Rare earth powder for magnet and production thereof
JPH07109501A (en) * 1993-10-06 1995-04-25 Toray Dow Corning Silicone Co Ltd Silver powder and its production

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