JPS5759304A - Magnetic recording material and its manufacture - Google Patents

Magnetic recording material and its manufacture

Info

Publication number
JPS5759304A
JPS5759304A JP55134044A JP13404480A JPS5759304A JP S5759304 A JPS5759304 A JP S5759304A JP 55134044 A JP55134044 A JP 55134044A JP 13404480 A JP13404480 A JP 13404480A JP S5759304 A JPS5759304 A JP S5759304A
Authority
JP
Japan
Prior art keywords
iron
oxide
magnetic recording
hydroiron
recording material
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
JP55134044A
Other languages
Japanese (ja)
Other versions
JPH0145202B2 (en
Inventor
Shiro Sato
Shuichi Miya
Takeo Nakano
Junji Minegishi
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.)
Kanto Denka Kogyo Co Ltd
Original Assignee
Kanto Denka Kogyo Co Ltd
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 Kanto Denka Kogyo Co Ltd filed Critical Kanto Denka Kogyo Co Ltd
Priority to JP55134044A priority Critical patent/JPS5759304A/en
Publication of JPS5759304A publication Critical patent/JPS5759304A/en
Publication of JPH0145202B2 publication Critical patent/JPH0145202B2/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
    • H01F1/032—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 hard-magnetic materials
    • H01F1/04—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 hard-magnetic materials metals or alloys
    • H01F1/06—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 hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/065—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 hard-magnetic materials metals or alloys in the form of particles, e.g. powder obtained by a reduction

Abstract

PURPOSE:To obtain a magnetic recording material having high coercive force and high density of magnetic flux and abounds in dispersibility by a method wherein iron nitride is made to be contained in metallic iron powder having iron as the main component. CONSTITUTION:Iron nitride of 10-70% is made to be contained in metallic iron powder having iron as the main component and having 10% or less of content of metal other than iron of cobalt, nickel, zinc, chromium, etc. As the manufacturing method thereof, after surface treatment with silicate of soda, etc., is performed on iron oxide of alpha-iron oxide, triiron tetraoxide, etc., or hydroiron oxide of alpha-hydroiron oxide, gamma-hydroiron oxide, etc., having grain shape of needle crystal, it is reduced and nitrified in ammonium gas at the temperature of 400-700 deg.C. Accordingly the iron powder for magnetic recording having magnetic characteristic of He 400- 700Oe, sigmas90-130emu/g with noise level as before can be obtained.
JP55134044A 1980-09-26 1980-09-26 Magnetic recording material and its manufacture Granted JPS5759304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55134044A JPS5759304A (en) 1980-09-26 1980-09-26 Magnetic recording material and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55134044A JPS5759304A (en) 1980-09-26 1980-09-26 Magnetic recording material and its manufacture

Publications (2)

Publication Number Publication Date
JPS5759304A true JPS5759304A (en) 1982-04-09
JPH0145202B2 JPH0145202B2 (en) 1989-10-03

Family

ID=15119048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55134044A Granted JPS5759304A (en) 1980-09-26 1980-09-26 Magnetic recording material and its manufacture

Country Status (1)

Country Link
JP (1) JPS5759304A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5911532A (en) * 1982-07-13 1984-01-21 Tdk Corp Magnetic recording medium
JPS5911533A (en) * 1982-07-13 1984-01-21 Tdk Corp Magnetic recording medium
JPS5975608A (en) * 1982-10-25 1984-04-28 Fuji Photo Film Co Ltd Ferromagnetic powder and manufacture thereof
JPS59144035A (en) * 1983-02-07 1984-08-17 Hitachi Maxell Ltd Magnetic recording medium
JPS6088406A (en) * 1983-10-21 1985-05-18 Taiyo Yuden Co Ltd Composite magnetic powder
US4673610A (en) * 1984-08-24 1987-06-16 Fuji Photo Film Company, Limited Magnetic recording medium having iron nitride recording layer
JPS63302418A (en) * 1988-01-22 1988-12-09 Konica Corp Magnetic recording medium
US4835068A (en) * 1984-08-24 1989-05-30 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPH05275217A (en) * 1992-11-20 1993-10-22 Hitachi Metals Ltd Manufacture of permanent magnet material
JP2006303321A (en) * 2005-04-22 2006-11-02 Dowa Mining Co Ltd Zinc-contained iron-nitride powder
JP2007036027A (en) * 2005-07-28 2007-02-08 Dowa Holdings Co Ltd Magnetic powder suitable for low noise medium
JP2007046074A (en) * 2005-08-08 2007-02-22 Hitachi Metals Ltd Fine metal particle and manufacturing method therefor
CN102376406A (en) * 2011-11-21 2012-03-14 宁波市展发磁业科技有限公司 Novel magnetic material

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5911533A (en) * 1982-07-13 1984-01-21 Tdk Corp Magnetic recording medium
JPS5911532A (en) * 1982-07-13 1984-01-21 Tdk Corp Magnetic recording medium
JPH0544162B2 (en) * 1982-10-25 1993-07-05 Fuji Photo Film Co Ltd
JPS5975608A (en) * 1982-10-25 1984-04-28 Fuji Photo Film Co Ltd Ferromagnetic powder and manufacture thereof
JPS59144035A (en) * 1983-02-07 1984-08-17 Hitachi Maxell Ltd Magnetic recording medium
JPH0568008B2 (en) * 1983-02-07 1993-09-28 Hitachi Maxell
JPS6088406A (en) * 1983-10-21 1985-05-18 Taiyo Yuden Co Ltd Composite magnetic powder
US4673610A (en) * 1984-08-24 1987-06-16 Fuji Photo Film Company, Limited Magnetic recording medium having iron nitride recording layer
US4835068A (en) * 1984-08-24 1989-05-30 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPH0379766B2 (en) * 1988-01-22 1991-12-19 Konishiroku Photo Ind
JPS63302418A (en) * 1988-01-22 1988-12-09 Konica Corp Magnetic recording medium
JPH05275217A (en) * 1992-11-20 1993-10-22 Hitachi Metals Ltd Manufacture of permanent magnet material
JP2006303321A (en) * 2005-04-22 2006-11-02 Dowa Mining Co Ltd Zinc-contained iron-nitride powder
JP4700998B2 (en) * 2005-04-22 2011-06-15 Ｄｏｗａホールディングス株式会社 Zn-containing iron nitride powder
JP2007036027A (en) * 2005-07-28 2007-02-08 Dowa Holdings Co Ltd Magnetic powder suitable for low noise medium
JP2007046074A (en) * 2005-08-08 2007-02-22 Hitachi Metals Ltd Fine metal particle and manufacturing method therefor
CN102376406A (en) * 2011-11-21 2012-03-14 宁波市展发磁业科技有限公司 Novel magnetic material

Also Published As

Publication number Publication date
JPH0145202B2 (en) 1989-10-03

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