JPS5782447A - Rare earth element-cobalt permanent magnet - Google Patents

Rare earth element-cobalt permanent magnet

Info

Publication number
JPS5782447A
JPS5782447A JP55157908A JP15790880A JPS5782447A JP S5782447 A JPS5782447 A JP S5782447A JP 55157908 A JP55157908 A JP 55157908A JP 15790880 A JP15790880 A JP 15790880A JP S5782447 A JPS5782447 A JP S5782447A
Authority
JP
Japan
Prior art keywords
permanent magnet
ingot
rare earth
earth element
superior
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.)
Granted
Application number
JP55157908A
Other languages
Japanese (ja)
Other versions
JPS648445B2 (en
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 JP55157908A priority Critical patent/JPS5782447A/en
Publication of JPS5782447A publication Critical patent/JPS5782447A/en
Publication of JPS648445B2 publication Critical patent/JPS648445B2/ja
Granted legal-status Critical Current

Links

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  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE: To develop a rare earth element-Co permanent magnet with superior magnetic characteristics by casting an Sm-Co-Cu alloy of a specified grade so that most of the solidified structure is made columnar, pulverizing the ingot, and binding the powder with a binder.
CONSTITUTION: An alloy consisting of 21W28% Sm, 4.5W10% Cu and the balance Co is melted in an atmosphere of an inert gas such as Ar and cast in a mold 3 in the atmosphere. At this time, solidification is controlled so that most of the solidified structure of the ingot is composed of columnar crystals 4. The ingot is subjected to soln. heat treatment, aged, and pulverized. This powder is molded with epoxy resin as a binder in a magnetic field and heated to cure the resin. Thus, a permanent magnet composed chiefly of Sm2Co17 type crystals and having superior magnetic characteristics such as superior residual magnetic flux density and coercive force is obtd.
COPYRIGHT: (C)1982,JPO&Japio
JP55157908A 1980-11-10 1980-11-10 Rare earth element-cobalt permanent magnet Granted JPS5782447A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55157908A JPS5782447A (en) 1980-11-10 1980-11-10 Rare earth element-cobalt permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55157908A JPS5782447A (en) 1980-11-10 1980-11-10 Rare earth element-cobalt permanent magnet

Publications (2)

Publication Number Publication Date
JPS5782447A true JPS5782447A (en) 1982-05-22
JPS648445B2 JPS648445B2 (en) 1989-02-14

Family

ID=15660067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55157908A Granted JPS5782447A (en) 1980-11-10 1980-11-10 Rare earth element-cobalt permanent magnet

Country Status (1)

Country Link
JP (1) JPS5782447A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH038940U (en) * 1989-06-14 1991-01-28

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216444A (en) * 1975-07-30 1977-02-07 Matsushita Refrigeration Automatic spot welding process
JPS5589462A (en) * 1978-12-26 1980-07-07 Seiko Epson Corp Manufacturing method of intermetallic compound magnet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216444A (en) * 1975-07-30 1977-02-07 Matsushita Refrigeration Automatic spot welding process
JPS5589462A (en) * 1978-12-26 1980-07-07 Seiko Epson Corp Manufacturing method of intermetallic compound magnet

Also Published As

Publication number Publication date
JPS648445B2 (en) 1989-02-14

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