EP0473782A4 - Magnetic core - Google Patents

Magnetic core

Info

Publication number
EP0473782A4
EP0473782A4 EP19900904934 EP90904934A EP0473782A4 EP 0473782 A4 EP0473782 A4 EP 0473782A4 EP 19900904934 EP19900904934 EP 19900904934 EP 90904934 A EP90904934 A EP 90904934A EP 0473782 A4 EP0473782 A4 EP 0473782A4
Authority
EP
European Patent Office
Prior art keywords
magnetic core
squareness ratio
sheets
thin alloy
characteristic
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
EP19900904934
Other versions
EP0473782A1 (en
EP0473782B1 (en
Inventor
Yumie Watanabe
Yumiko Takahashi
Takao Sawa
Yoshiyuki Yamauchi
Susumu Matsushita
Masami Okamura
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
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=13986446&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0473782(A4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of EP0473782A1 publication Critical patent/EP0473782A1/en
Publication of EP0473782A4 publication Critical patent/EP0473782A4/en
Application granted granted Critical
Publication of EP0473782B1 publication Critical patent/EP0473782B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01F1/12—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
    • H01F1/16—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 sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • 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
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15308—Amorphous metallic alloys, e.g. glassy metals based on Fe/Ni
    • 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
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co
    • 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
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15341—Preparation processes therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/04—Cores, Yokes, or armatures made from strips or ribbons

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Soft Magnetic Materials (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Continuous Casting (AREA)

Abstract

A magnetic core obtained by winding a long sheet of thin alloy or by laminating short sheets thereof. The surface roughness of the thin alloy sheet or sheets is limited to lie within a predetermined range in order to improve the squareness ratio of the magnetic core. The magnetic core exhibits excellent squareness ratio characteristic and magnetic saturation characteristic in high-frequency regions.
EP90904934A 1990-03-27 1990-03-27 Magnetic core Expired - Lifetime EP0473782B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1990/000407 WO1991015020A1 (en) 1990-03-27 1990-03-27 Magnetic core

Publications (3)

Publication Number Publication Date
EP0473782A1 EP0473782A1 (en) 1992-03-11
EP0473782A4 true EP0473782A4 (en) 1992-11-04
EP0473782B1 EP0473782B1 (en) 1997-08-27

Family

ID=13986446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90904934A Expired - Lifetime EP0473782B1 (en) 1990-03-27 1990-03-27 Magnetic core

Country Status (4)

Country Link
EP (1) EP0473782B1 (en)
KR (1) KR0134508B1 (en)
DE (1) DE69031338T2 (en)
WO (1) WO1991015020A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2333287C (en) * 1998-05-13 2009-01-06 Alliedsignal Inc. High stack factor amorphous metal ribbon and transformer cores
EP1045402B1 (en) 1999-04-15 2011-08-31 Hitachi Metals, Ltd. Soft magnetic alloy strip, manufacturing method and use thereof
GB2374084A (en) * 2001-04-03 2002-10-09 Fourwinds Group Inc Alloys having bistable magnetic behaviour
EP3693980A1 (en) * 2014-06-10 2020-08-12 Hitachi Metals, Ltd. Fe-based nanocrystalline alloy core

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3705893A1 (en) * 1986-02-24 1987-08-27 Toshiba Kawasaki Kk METHOD FOR PRODUCING MAGNETIC CORES WITH HIGH PERMEABILITY

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121706A (en) * 1983-11-29 1985-06-29 Hitachi Metals Ltd Winding magnetic core
JPS6124208A (en) * 1984-07-12 1986-02-01 Nippon Steel Corp Amorphous magnetic material having excellent magnetic characteristics
JPS62179704A (en) * 1986-02-04 1987-08-06 Hitachi Metals Ltd Fe-based amorphous core excellent in controlling magnetization characteristics
JP2573606B2 (en) * 1987-06-02 1997-01-22 日立金属 株式会社 Magnetic core and manufacturing method thereof
JP2693453B2 (en) * 1987-09-28 1997-12-24 株式会社東芝 Winding core
JPH01247556A (en) * 1988-03-30 1989-10-03 Hitachi Metals Ltd Fe-base magnetic alloy excellent in iso-permeability characteristic
JPS64249A (en) * 1988-06-03 1989-01-05 Toshiba Corp Extra thin amorphous alloy combining high magnetic permeability with low iron loss

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3705893A1 (en) * 1986-02-24 1987-08-27 Toshiba Kawasaki Kk METHOD FOR PRODUCING MAGNETIC CORES WITH HIGH PERMEABILITY

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 19, no. 9, September 1980, pages 1781-1787, Tokyo , JP; M. MATSUURA et al.: "Effects of ambient gases on surface profile and related properties of amorphous alloy ribbons fabricated by melt-spinning" *
MATERIALS LETTERS, vol. 7, nos. 7-8, December 1988, pages 263-267, Amsterdam, NL; D.X. PANG et al.: "Influence of quenching rate on the curie temperature, resistivity, internal friction and structure of Fe-based amorphous alloys" *
PATENT ABSTRACTS OF JAPAN, vol. 10, no. 175 (E-413)[2231], 20th June 1986; & JP-A-61 24 208 (SHIN NIPPON SEITETSU K.K.) 01-02-1986 *
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 277 (E-355)[2000], 6th November 1985; & JP-A-60 121 706 (HITACHI KINZOKU K.K.) 29-06-1985 *
See also references of WO9115020A1 *

Also Published As

Publication number Publication date
EP0473782A1 (en) 1992-03-11
WO1991015020A1 (en) 1991-10-03
DE69031338D1 (en) 1997-10-02
KR920702001A (en) 1992-08-12
EP0473782B1 (en) 1997-08-27
DE69031338T2 (en) 1998-04-02
KR0134508B1 (en) 1998-04-27

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