EP0383035A3 - Iron-silicon alloy powder magnetic cores and method of manufacturing the same - Google Patents

Iron-silicon alloy powder magnetic cores and method of manufacturing the same Download PDF

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Publication number
EP0383035A3
EP0383035A3 EP19900100930 EP90100930A EP0383035A3 EP 0383035 A3 EP0383035 A3 EP 0383035A3 EP 19900100930 EP19900100930 EP 19900100930 EP 90100930 A EP90100930 A EP 90100930A EP 0383035 A3 EP0383035 A3 EP 0383035A3
Authority
EP
European Patent Office
Prior art keywords
alloy powder
manufacturing
powder magnetic
iron
same
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
EP19900100930
Other languages
German (de)
French (fr)
Other versions
EP0383035A2 (en
EP0383035B1 (en
Inventor
Tokuhiko C/O Nippon Steel Corporation Nishida
Masao C/O Nippon Steel Corporation Yamamiya
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26342241&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0383035(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of EP0383035A2 publication Critical patent/EP0383035A2/en
Publication of EP0383035A3 publication Critical patent/EP0383035A3/en
Application granted granted Critical
Publication of EP0383035B1 publication Critical patent/EP0383035B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14766—Fe-Si based alloys
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/20—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/22—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated

Abstract

An Fe-Si alloy powder magnetic core comprises an alloy powder of an average particle diameter of 10-100 µm, produced by water atomization, in which the composition by weight of the alloy powder is 2-12% silicon and 0.05-0.95% oxygen with the balance being essentially iron. The process of manufacturing the powder magnetic core is also disclosed.
EP19900100930 1989-01-18 1990-01-17 Iron-silicon alloy powder magnetic cores and method of manufacturing the same Revoked EP0383035B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP785389 1989-01-18
JP7853/89 1989-01-18
JP1335899A JPH0682577B2 (en) 1989-01-18 1989-12-25 Fe-Si alloy dust core and method of manufacturing the same
JP335899/89 1989-12-25

Publications (3)

Publication Number Publication Date
EP0383035A2 EP0383035A2 (en) 1990-08-22
EP0383035A3 true EP0383035A3 (en) 1991-07-03
EP0383035B1 EP0383035B1 (en) 1995-10-04

Family

ID=26342241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900100930 Revoked EP0383035B1 (en) 1989-01-18 1990-01-17 Iron-silicon alloy powder magnetic cores and method of manufacturing the same

Country Status (3)

Country Link
EP (1) EP0383035B1 (en)
JP (1) JPH0682577B2 (en)
DE (1) DE69022751T2 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19610196A1 (en) * 1996-03-15 1997-09-18 Horst Dr Kleine Magnetically soft cores of iron-silicon mixture manufacture e.g. for LF applications
JP2000040614A (en) * 1998-05-18 2000-02-08 Daido Steel Co Ltd Core material for noise filter
KR100533097B1 (en) 2000-04-27 2005-12-02 티디케이가부시기가이샤 Composite Magnetic Material and Magnetic Molding Material, Magnetic Powder Compression Molding Material, and Magnetic Paint using the Composite Magnetic Material, Composite Dielectric Material and Molding Material, Powder Compression Molding Material, Paint, Prepreg, and Substrate using the Composite Dielectric Material, and Electronic Part
US6395193B1 (en) * 2000-05-03 2002-05-28 Lord Corporation Magnetorheological compositions
US6788185B2 (en) 2002-01-17 2004-09-07 Nec Tokin Corporation Powder core and high-frequency reactor using the same
EP1475808B1 (en) * 2002-01-17 2006-08-30 Nec Tokin Corporation Powder magnetic core and high frequency reactor using the same
US6646532B2 (en) 2002-02-26 2003-11-11 Nec Tokin Corporation Powder core and reactor using the same
EP1341191A1 (en) * 2002-02-27 2003-09-03 NEC TOKIN Corporation Powder core and reactor using the same
KR20040042214A (en) * 2002-11-13 2004-05-20 휴먼일렉스(주) FABRICATION PROCESS OF SMD CORE USING Fe-Si ALLOY POWDER
JP2009088502A (en) * 2007-09-12 2009-04-23 Seiko Epson Corp Method of manufacturing oxide-coated soft magnetic powder, oxide-coated soft magnetic powder, dust core, and magnetic element
JP5257743B2 (en) * 2008-02-28 2013-08-07 日立金属株式会社 Fe-based soft magnetic powder, manufacturing method thereof, and dust core
JP2010080978A (en) * 2009-12-16 2010-04-08 Daido Steel Co Ltd Soft magnetic alloy powder and powder magnetic core
JP5354101B2 (en) * 2010-06-09 2013-11-27 新東工業株式会社 Iron group based soft magnetic powder material
CN103065786A (en) * 2011-10-22 2013-04-24 湖南康力新材料科技有限责任公司 Manufacturing method of high permeability low power consumption Fe-Si-AI magnetic powder cores
JP5650702B2 (en) * 2012-10-15 2015-01-07 株式会社タムラ製作所 Powder magnetic core and manufacturing method thereof
JP6382487B2 (en) * 2013-01-24 2018-08-29 Tdk株式会社 Magnetic core and coil type electronic components
KR102047565B1 (en) * 2014-11-04 2019-11-21 삼성전기주식회사 Inductor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087781A1 (en) * 1982-02-26 1983-09-07 Kabushiki Kaisha Toshiba Core material
EP0088992A2 (en) * 1982-03-17 1983-09-21 Asea Ab Method for manufacturing an object of soft-magnetic material by bonding together a mass of powder grains
EP0135980A1 (en) * 1983-09-29 1985-04-03 Crucible Materials Corporation Method for producing iron-silicon alloy articles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6074603A (en) * 1983-09-30 1985-04-26 Nippon Ferrite Ltd Dust core
JPS6074602A (en) * 1983-09-30 1985-04-26 Nippon Ferrite Ltd Dust core

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087781A1 (en) * 1982-02-26 1983-09-07 Kabushiki Kaisha Toshiba Core material
EP0088992A2 (en) * 1982-03-17 1983-09-21 Asea Ab Method for manufacturing an object of soft-magnetic material by bonding together a mass of powder grains
EP0135980A1 (en) * 1983-09-29 1985-04-03 Crucible Materials Corporation Method for producing iron-silicon alloy articles

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 212 (E-339) 29 August 1985, & JP-A-60 074602 (NIHON FERRITE KK) 26 April 1985, *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 212 (E-339) 29 August 1985, & JP-A-60 074603 (NIHON FERRITE KK) 26 April 1985, *

Also Published As

Publication number Publication date
EP0383035A2 (en) 1990-08-22
DE69022751T2 (en) 1996-04-04
JPH0682577B2 (en) 1994-10-19
JPH02290002A (en) 1990-11-29
DE69022751D1 (en) 1995-11-09
EP0383035B1 (en) 1995-10-04

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