JPS5591102A - Rare earth permanent magnet - Google Patents

Rare earth permanent magnet

Info

Publication number
JPS5591102A
JPS5591102A JP16376378A JP16376378A JPS5591102A JP S5591102 A JPS5591102 A JP S5591102A JP 16376378 A JP16376378 A JP 16376378A JP 16376378 A JP16376378 A JP 16376378A JP S5591102 A JPS5591102 A JP S5591102A
Authority
JP
Japan
Prior art keywords
molding
rare earth
earth elements
powder
proportion
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
JP16376378A
Other languages
Japanese (ja)
Inventor
Ichikazu Kasai
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 JP16376378A priority Critical patent/JPS5591102A/en
Publication of JPS5591102A publication Critical patent/JPS5591102A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a molding of the subject magnet at high dimensional accuracy having such a magnetic characteristic that the proportion of the magnetic substance is not reduced by the incorporation of a binder by heating a powder mainly composed of rare earth elements containing Y and La, and Co at a lower temperature lest the surface thereof be melted.
CONSTITUTION: A small amount of molding assistant such as zinc stearate is added to an intermetallic compound powder RM made of a transition metal M mainly composed of rare earth elements R and Co, and the mixture is press-molded. The molding is initially heated at about 300°C to evaporate the molding assistant. Then, it is heated up to 900W500°C to partially diffuse the powder surface. At this point, the sintering temperature is limited to 400W1,000°C. This prevents any lowering of the proportion of the magnetic substance ensuring a magnet molding of rare earth elements having medium of magnetic characteristics at a high dimensional accuracy.
COPYRIGHT: (C)1980,JPO&Japio
JP16376378A 1978-12-28 1978-12-28 Rare earth permanent magnet Pending JPS5591102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16376378A JPS5591102A (en) 1978-12-28 1978-12-28 Rare earth permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16376378A JPS5591102A (en) 1978-12-28 1978-12-28 Rare earth permanent magnet

Publications (1)

Publication Number Publication Date
JPS5591102A true JPS5591102A (en) 1980-07-10

Family

ID=15780236

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16376378A Pending JPS5591102A (en) 1978-12-28 1978-12-28 Rare earth permanent magnet

Country Status (1)

Country Link
JP (1) JPS5591102A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6063901A (en) * 1983-09-17 1985-04-12 Sumitomo Special Metals Co Ltd Permanent magnet superior in resistance to oxidation
JPH01105505A (en) * 1987-10-17 1989-04-24 Tokin Corp Manufacture of compound magnet composite

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6063901A (en) * 1983-09-17 1985-04-12 Sumitomo Special Metals Co Ltd Permanent magnet superior in resistance to oxidation
JPH056322B2 (en) * 1983-09-17 1993-01-26 Sumitomo Spec Metals
JPH01105505A (en) * 1987-10-17 1989-04-24 Tokin Corp Manufacture of compound magnet composite

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