JPS56169304A - Ferromagnetic metal iron corpuscle for magnetic recording - Google Patents

Ferromagnetic metal iron corpuscle for magnetic recording

Info

Publication number
JPS56169304A
JPS56169304A JP7153180A JP7153180A JPS56169304A JP S56169304 A JPS56169304 A JP S56169304A JP 7153180 A JP7153180 A JP 7153180A JP 7153180 A JP7153180 A JP 7153180A JP S56169304 A JPS56169304 A JP S56169304A
Authority
JP
Japan
Prior art keywords
corpuscle
ferromagnetic
ageing
magnetic recording
magnetic
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
JP7153180A
Other languages
Japanese (ja)
Other versions
JPS644329B2 (en
Inventor
Kazufumi Oshima
Mitsuo Matsunaga
Fujio Hayashi
Haruo Sekiguchi
Kazuhiro Imaoka
Toshinori Ishibashi
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP7153180A priority Critical patent/JPS56169304A/en
Publication of JPS56169304A publication Critical patent/JPS56169304A/en
Publication of JPS644329B2 publication Critical patent/JPS644329B2/ja
Granted 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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70605—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys
    • G11B5/70615—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys containing Fe metal or alloys

Abstract

PURPOSE:To prevent deterioration with ageing of magnetic characteristics of the ferromagnetic metl iron corpuscle for magnetic storage by a method wherein a reduced magnetic iron powder is modified with an organic compound containing Si. CONSTITUTION:The ferromagnetic alpha-Fe having a minute particle-shape and containing at least one of Al, Si, P as a subsidiary component is modified chemically with the organic compound contang Si being the general formula thereof shown with the formula I, for example a kind of silicon oil or a kind of carbon funcitonal silicon wherein the R is hydrogen or an organic radical of methlyl radical, etc. Accordingly deterioration with ageing of magnetic characteristics originated from proceeding oxidizing reaction to be caused by oxygen can be prevented, and highly stable economization can be realized.
JP7153180A 1980-05-30 1980-05-30 Ferromagnetic metal iron corpuscle for magnetic recording Granted JPS56169304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7153180A JPS56169304A (en) 1980-05-30 1980-05-30 Ferromagnetic metal iron corpuscle for magnetic recording

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7153180A JPS56169304A (en) 1980-05-30 1980-05-30 Ferromagnetic metal iron corpuscle for magnetic recording

Publications (2)

Publication Number Publication Date
JPS56169304A true JPS56169304A (en) 1981-12-26
JPS644329B2 JPS644329B2 (en) 1989-01-25

Family

ID=13463404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7153180A Granted JPS56169304A (en) 1980-05-30 1980-05-30 Ferromagnetic metal iron corpuscle for magnetic recording

Country Status (1)

Country Link
JP (1) JPS56169304A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019510134A (en) * 2016-02-01 2019-04-11 ホガナス アクチボラグ （パブル） Iron-based powder composition

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5142990A (en) * 1974-10-11 1976-04-12 Fuji Photo Film Co Ltd
JPS51104594A (en) * 1975-03-12 1976-09-16 Tdk Electronics Co Ltd
JPS5285054A (en) * 1976-01-09 1977-07-15 Hitachi Ltd Method of stabilizing metal powder
JPS52108804A (en) * 1976-03-10 1977-09-12 Fuji Photo Film Co Ltd Magnetic recording material
JPS52134858A (en) * 1976-05-07 1977-11-11 Kanto Denka Kogyo Kk Method of making magnetic recording magnetic powder containing iron as main constituent
JPS52154607A (en) * 1976-05-20 1977-12-22 Hitachi Maxell Magnetic recording media
JPS52155398A (en) * 1976-05-20 1977-12-23 Hitachi Maxell Metallic magneticcpowder for magnetic recording which has excellent oxidation stability and method of manufacture thereof
JPS5375199A (en) * 1976-12-15 1978-07-04 Toda Kogyo Corp Method of making acicular alphaa feooh particulates
JPS5571003A (en) * 1978-11-24 1980-05-28 Hitachi Ltd Manufacture of magnetic powder for magnetic recording medium
JPS5584035A (en) * 1978-12-20 1980-06-24 Hitachi Ltd Manufacture of magnetic recording medium
JPS5584036A (en) * 1978-12-20 1980-06-24 Hitachi Ltd Manufacture of magnetic recording medium
JPS5625901U (en) * 1980-07-14 1981-03-10

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5142990A (en) * 1974-10-11 1976-04-12 Fuji Photo Film Co Ltd
JPS51104594A (en) * 1975-03-12 1976-09-16 Tdk Electronics Co Ltd
JPS5285054A (en) * 1976-01-09 1977-07-15 Hitachi Ltd Method of stabilizing metal powder
JPS52108804A (en) * 1976-03-10 1977-09-12 Fuji Photo Film Co Ltd Magnetic recording material
JPS52134858A (en) * 1976-05-07 1977-11-11 Kanto Denka Kogyo Kk Method of making magnetic recording magnetic powder containing iron as main constituent
JPS52154607A (en) * 1976-05-20 1977-12-22 Hitachi Maxell Magnetic recording media
JPS52155398A (en) * 1976-05-20 1977-12-23 Hitachi Maxell Metallic magneticcpowder for magnetic recording which has excellent oxidation stability and method of manufacture thereof
JPS5375199A (en) * 1976-12-15 1978-07-04 Toda Kogyo Corp Method of making acicular alphaa feooh particulates
JPS5571003A (en) * 1978-11-24 1980-05-28 Hitachi Ltd Manufacture of magnetic powder for magnetic recording medium
JPS5584035A (en) * 1978-12-20 1980-06-24 Hitachi Ltd Manufacture of magnetic recording medium
JPS5584036A (en) * 1978-12-20 1980-06-24 Hitachi Ltd Manufacture of magnetic recording medium
JPS5625901U (en) * 1980-07-14 1981-03-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019510134A (en) * 2016-02-01 2019-04-11 ホガナス アクチボラグ （パブル） Iron-based powder composition

Also Published As

Publication number Publication date
JPS644329B2 (en) 1989-01-25

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