EP0350781A3 - Magnetic powder material and resin-bonded type magnet - Google Patents

Magnetic powder material and resin-bonded type magnet Download PDF

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Publication number
EP0350781A3
EP0350781A3 EP19890112316 EP89112316A EP0350781A3 EP 0350781 A3 EP0350781 A3 EP 0350781A3 EP 19890112316 EP19890112316 EP 19890112316 EP 89112316 A EP89112316 A EP 89112316A EP 0350781 A3 EP0350781 A3 EP 0350781A3
Authority
EP
European Patent Office
Prior art keywords
magnetic powder
powder material
resin
type magnet
bonded type
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.)
Withdrawn
Application number
EP19890112316
Other languages
German (de)
French (fr)
Other versions
EP0350781A2 (en
Inventor
Kawato Hiroshi
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.)
Idemitsu Kosan Co Ltd
Original Assignee
Idemitsu Kosan 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
Priority claimed from JP63171832A external-priority patent/JPH0222802A/en
Priority claimed from JP1101555A external-priority patent/JPH02281712A/en
Application filed by Idemitsu Kosan Co Ltd filed Critical Idemitsu Kosan Co Ltd
Publication of EP0350781A2 publication Critical patent/EP0350781A2/en
Publication of EP0350781A3 publication Critical patent/EP0350781A3/en
Withdrawn legal-status Critical Current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
    • 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
    • H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • H01F1/113—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent
    • 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
    • H01F1/06—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 in the form of particles, e.g. powder
    • H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/083—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 in the form of particles, e.g. powder pressed, sintered, or bound together in a bonding agent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0266—Moulding; Pressing

Abstract

There are disclosed a magnetic powder material which comprises a crystalline thermoplastic resin excellent in heat resistance which is coated or adhered to magnetic powder with 0.1 to 5 % by weight and a resin-bonded type magnet which comprises a cold compression molded material of said magnetic powder material. Also disclosed are methods for preparing these materials with high efficiency.
EP19890112316 1988-07-12 1989-07-06 Magnetic powder material and resin-bonded type magnet Withdrawn EP0350781A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP171832/88 1988-07-12
JP63171832A JPH0222802A (en) 1988-07-12 1988-07-12 Material for magnet powder and resin bonded magnet
JP101555/89 1989-04-24
JP1101555A JPH02281712A (en) 1989-04-24 1989-04-24 Manufacture of magnet powder material and resin-bonded magnet

Publications (2)

Publication Number Publication Date
EP0350781A2 EP0350781A2 (en) 1990-01-17
EP0350781A3 true EP0350781A3 (en) 1991-03-20

Family

ID=26442424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890112316 Withdrawn EP0350781A3 (en) 1988-07-12 1989-07-06 Magnetic powder material and resin-bonded type magnet

Country Status (2)

Country Link
EP (1) EP0350781A3 (en)
KR (1) KR900002355A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420318C2 (en) * 1994-06-11 1996-04-11 Schulman A Gmbh Polymer-based composition for the production of magnetic and magnetizable moldings
FR3000834B1 (en) * 2013-01-10 2015-02-20 Commissariat Energie Atomique PROCESS FOR PRODUCING PERMANENT MAGNETS BY HEATING FERROMAGNETIC POWDER
DE102013220452A1 (en) * 2013-10-10 2015-04-30 Volkswagen Aktiengesellschaft Method for producing a permanent magnet and permanent magnet and electric machine with such a permanent magnet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462919A (en) * 1982-04-02 1984-07-31 Sumitomo Bakelite Company, Limited Ferromagnetic resin composition containing polymeric surface precoated magnetic rare earth cobalt powders
EP0175535A1 (en) * 1984-09-12 1986-03-26 Polyplastics Co. Ltd. Magnetic composite

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60113403A (en) * 1983-11-24 1985-06-19 Sumitomo Metal Mining Co Ltd Manufacture of rare earth resin magnet
JPS60217602A (en) * 1984-04-13 1985-10-31 Seiko Epson Corp Manufacture of resin-bonded permanent magnet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462919A (en) * 1982-04-02 1984-07-31 Sumitomo Bakelite Company, Limited Ferromagnetic resin composition containing polymeric surface precoated magnetic rare earth cobalt powders
EP0175535A1 (en) * 1984-09-12 1986-03-26 Polyplastics Co. Ltd. Magnetic composite

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 65 (E-388)(2122) 14 March 1986, & JP-A-60 217602 (SUWA SEIKOSHA K.K.) 31 October 1985, *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 266 (E-352)(1989) 23 October 85, & JP-A-60 113403 (SUMITOMO KINZOKU KOUZAN K.K.) 19 June 1985, *

Also Published As

Publication number Publication date
EP0350781A2 (en) 1990-01-17
KR900002355A (en) 1990-02-28

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