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JPS57202706A - Magnetic shield plate and manufacture therefor - Google Patents

Magnetic shield plate and manufacture therefor

Info

Publication number
JPS57202706A
JPS57202706A JP57087702A JP8770282A JPS57202706A JP S57202706 A JPS57202706 A JP S57202706A JP 57087702 A JP57087702 A JP 57087702A JP 8770282 A JP8770282 A JP 8770282A JP S57202706 A JPS57202706 A JP S57202706A
Authority
JP
Japan
Prior art keywords
shield plate
iron
main body
nickel
magnetic shield
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
JP57087702A
Other languages
Japanese (ja)
Inventor
Shuichi Kikuchi
Kazuo Iwashita
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 JP57087702A priority Critical patent/JPS57202706A/en
Publication of JPS57202706A publication Critical patent/JPS57202706A/en
Pending 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
    • H01F1/14708—Fe-Ni based alloys
    • H01F1/14716—Fe-Ni based alloys in the form of sheets

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Soft Magnetic Materials (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

PURPOSE:To provide superior shield effect and to obtain a very inexpensive magnetic shield plate as well by a method wherein a high-permeability alloy layer composed iron and nickel as a main body is formed on a substrate composed iron as a main body and a mgnetic shield plate is composed. CONSTITUTION:Nickel plating is directly applied on a substrate composed of iron as a main body. Then, annealing treatment is applied to a base metal coated nickel plating at 750-950 deg.C under nonoxidizing atmosphere to obtain a shield plate. The iron of the base metal diffuses to nickel on the surface of the substrate and a high-permeability alloy layer composed iron and nickel as a main body is formed on the surface of the shield plate. In this way, the shield effect equivalent to a permalloy of 45% is provided and a very inexpensive shield plate can be obtained.
JP57087702A 1982-05-24 1982-05-24 Magnetic shield plate and manufacture therefor Pending JPS57202706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57087702A JPS57202706A (en) 1982-05-24 1982-05-24 Magnetic shield plate and manufacture therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57087702A JPS57202706A (en) 1982-05-24 1982-05-24 Magnetic shield plate and manufacture therefor

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP4079679A Division JPS55135374A (en) 1979-04-04 1979-04-04 Tape cassette

Publications (1)

Publication Number Publication Date
JPS57202706A true JPS57202706A (en) 1982-12-11

Family

ID=13922246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57087702A Pending JPS57202706A (en) 1982-05-24 1982-05-24 Magnetic shield plate and manufacture therefor

Country Status (1)

Country Link
JP (1) JPS57202706A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242484A2 (en) * 1986-04-23 1987-10-28 Tektronix, Inc. Electrical assembly having shielded structural sub-parts
WO1997011204A1 (en) * 1995-09-19 1997-03-27 Toyo Kohan Co., Ltd. Magnetic shield material, production method thereof and color image tube assembling the material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242484A2 (en) * 1986-04-23 1987-10-28 Tektronix, Inc. Electrical assembly having shielded structural sub-parts
EP0242484A3 (en) * 1986-04-23 1988-05-25 Tektronix, Inc. Electrical assembly having shielded structural sub-parts
WO1997011204A1 (en) * 1995-09-19 1997-03-27 Toyo Kohan Co., Ltd. Magnetic shield material, production method thereof and color image tube assembling the material
US6025673A (en) * 1995-09-19 2000-02-15 Toyo Kohan Co., Ltd. Magnetic shield material, production method thereof and color image tube assembling the material
KR100269717B1 (en) * 1995-09-19 2000-10-16 다나베 히로까즈 Magnetic shield material and production method thereof

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