JPS56129303A - Magnetic recording substance - Google Patents

Magnetic recording substance

Info

Publication number
JPS56129303A
JPS56129303A JP3210080A JP3210080A JPS56129303A JP S56129303 A JPS56129303 A JP S56129303A JP 3210080 A JP3210080 A JP 3210080A JP 3210080 A JP3210080 A JP 3210080A JP S56129303 A JPS56129303 A JP S56129303A
Authority
JP
Japan
Prior art keywords
thin plate
magnetic recording
recording substance
magnetic
productivity
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
JP3210080A
Other languages
Japanese (ja)
Inventor
Norishige Yamaguchi
Masaru Takayama
Masao Shigeta
Masatatsu Sugaya
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP3210080A priority Critical patent/JPS56129303A/en
Publication of JPS56129303A publication Critical patent/JPS56129303A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/657—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing inorganic, non-oxide compound of Si, N, P, B, H or C, e.g. in metal alloy or compound

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE:To try the improvement of mass-productivity by consisting a thin plate specifically composing of martensite including Al, C, Fe as a magnetic recording recording substance wherein the time aging of magnetic characteristics is small and a variation in quality is reduced. CONSTITUTION:Al of 5-20, C of 0.5-3, and Fe of 35-94.5by weight % are weighed and combined and high-frequency induced dissolution and casting are applied under vacuum to make a mother alloy. Next, a thin plate of 1mm. thickness or less is made by high-speed quenching method by using the mother alloy. Solubilization treatment is done for the thin plate and then the thin plate is poured into oil for quenching and final tempering is performed to obtain a thin plate having martensite structure. In this way, a magnetic recording substance having high residual magnetic flux density and obtainable high output will be obtain and the time aging of magnetic characteristics is small. Furthermore, mass-productivity is high and a variation in quality will be reduced.
JP3210080A 1980-03-13 1980-03-13 Magnetic recording substance Pending JPS56129303A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3210080A JPS56129303A (en) 1980-03-13 1980-03-13 Magnetic recording substance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3210080A JPS56129303A (en) 1980-03-13 1980-03-13 Magnetic recording substance

Publications (1)

Publication Number Publication Date
JPS56129303A true JPS56129303A (en) 1981-10-09

Family

ID=12349466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3210080A Pending JPS56129303A (en) 1980-03-13 1980-03-13 Magnetic recording substance

Country Status (1)

Country Link
JP (1) JPS56129303A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0695811A1 (en) * 1994-08-05 1996-02-07 Toyota Jidosha Kabushiki Kaisha High heat-resisting iron-base alloy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0695811A1 (en) * 1994-08-05 1996-02-07 Toyota Jidosha Kabushiki Kaisha High heat-resisting iron-base alloy

Similar Documents

Publication Publication Date Title
JPS57100705A (en) Permanent magnet
JPS55117723A (en) Magnetic head
JPS55152150A (en) High magnetic flux amorphous iron alloy
JPS56129566A (en) Motor
JPS56129303A (en) Magnetic recording substance
JPS6439347A (en) Fe-based soft magnetic alloy
JPS558409A (en) Nondirectional magnetic steel plate of low watt loss
JPS54125117A (en) Steel plate for enamel
KR870010204A (en) How to make low iron cores in oriented silicon steel
JPS56169722A (en) Manufacture of magnetic alloy
JPS54145997A (en) Magnetic recording body and method of producing the same
JPS57104654A (en) Manufacture of al alloy plate for magnetic disk
JPS56142857A (en) Manufacture of permanent magnet material
JPS56147410A (en) Magnetic recording media
JPS5792131A (en) Production of fe-cr-co magnet alloy
JPS56155507A (en) Magnetic recording medium
JPS5779145A (en) High permeability alloy
JPS5724518A (en) Coil core for power line filter
JPS52101019A (en) Production of magnetic head
Glazer Magnetic Noise in Amorphous Fe sub 5 Co sub 70 Si sub 15 B sub 10 Strip
Ho et al. Effect of Rotating Magnetic Field Annealing on Induced Anisotropy in Amorphous Alloys
JPS5798626A (en) Manufacture of fe-cr-co alloy having composite magnetic characteristic
JPS56139616A (en) Surface detect improving method of steel plate for concentrated nitric acid
JPS5427997A (en) Manufacture of magnetic core
JPS5739124A (en) Preparation of high permeability magnetic alloy