JPS5580303A - Manufacture of high-permeability amorphous alloy core - Google Patents

Manufacture of high-permeability amorphous alloy core

Info

Publication number
JPS5580303A
JPS5580303A JP15524178A JP15524178A JPS5580303A JP S5580303 A JPS5580303 A JP S5580303A JP 15524178 A JP15524178 A JP 15524178A JP 15524178 A JP15524178 A JP 15524178A JP S5580303 A JPS5580303 A JP S5580303A
Authority
JP
Japan
Prior art keywords
core
temperature
amorphous alloy
magnetic
manufacture
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
JP15524178A
Other languages
Japanese (ja)
Other versions
JPS6133242B2 (en
Inventor
Yoshimi Makino
Akira Kamihira
Moriyasu Ito
Koichi Aso
Masatoshi Hayakawa
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.)
Sony Corp
Original Assignee
Sony 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
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP15524178A priority Critical patent/JPS5580303A/en
Publication of JPS5580303A publication Critical patent/JPS5580303A/en
Publication of JPS6133242B2 publication Critical patent/JPS6133242B2/ja
Granted 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
    • H01F1/147—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

Abstract

PURPOSE:To obtain a soft magnetic core suitable for magnetic heads, by preparing a thin core material by the use of an amorphous alloy of FeCo.SiB wherein the composition is specified and the magnetic Curie temperature is lower than crystallizing temperature, forming the material into a core shape, holding the core at a specified temperature, and then rapidly cooling it. CONSTITUTION:A thin core material is prepared by using an amorphous alloy which is expressed by (Fe1-xCox)100-z(Si1-yBy)z, where x=0.90-0.98, y=0.30- 0.80, and z=22-30, and a Curie temperature Tc is lower than a crystallizing temperature Tcry. Then, the material is machined into a core shape. After the core is held at a temperature T which is 0.95XTc( deg.K)<=T( deg.K)<Tcry( deg.K), it is rapidly cooled. In this method, distortion, which has been yielded during the rapid cooling after heat treatment, is disappeared. Furthermore, magnetically induced anisotropy due to the presence of Co in the alloy is also disappeared, thereby the magnetic characteristics are greatly enhanced.
JP15524178A 1978-12-13 1978-12-13 Manufacture of high-permeability amorphous alloy core Granted JPS5580303A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15524178A JPS5580303A (en) 1978-12-13 1978-12-13 Manufacture of high-permeability amorphous alloy core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15524178A JPS5580303A (en) 1978-12-13 1978-12-13 Manufacture of high-permeability amorphous alloy core

Publications (2)

Publication Number Publication Date
JPS5580303A true JPS5580303A (en) 1980-06-17
JPS6133242B2 JPS6133242B2 (en) 1986-08-01

Family

ID=15601613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15524178A Granted JPS5580303A (en) 1978-12-13 1978-12-13 Manufacture of high-permeability amorphous alloy core

Country Status (1)

Country Link
JP (1) JPS5580303A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6076009U (en) * 1983-10-18 1985-05-28 株式会社トーキン Choke coil for noise filter
JPS6130649A (en) * 1979-01-22 1986-02-12 アライド・コ−ポレ−シヨン Magnetic amorphous metal alloy sheet
JPS62142751A (en) * 1985-12-18 1987-06-26 Akai Electric Co Ltd Heat treatment of amorphous magnetic alloy foil

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6130649A (en) * 1979-01-22 1986-02-12 アライド・コ−ポレ−シヨン Magnetic amorphous metal alloy sheet
JPH0525946B2 (en) * 1979-01-22 1993-04-14 Allied Signal Inc
JPS6076009U (en) * 1983-10-18 1985-05-28 株式会社トーキン Choke coil for noise filter
JPH0442887Y2 (en) * 1983-10-18 1992-10-12
JPS62142751A (en) * 1985-12-18 1987-06-26 Akai Electric Co Ltd Heat treatment of amorphous magnetic alloy foil

Also Published As

Publication number Publication date
JPS6133242B2 (en) 1986-08-01

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