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GB1511379A - Process for producing a magnetic material and magnetic recording medium containing the same - Google Patents

Process for producing a magnetic material and magnetic recording medium containing the same

Info

Publication number
GB1511379A
GB1511379A GB30697/75A GB3069775A GB1511379A GB 1511379 A GB1511379 A GB 1511379A GB 30697/75 A GB30697/75 A GB 30697/75A GB 3069775 A GB3069775 A GB 3069775A GB 1511379 A GB1511379 A GB 1511379A
Authority
GB
United Kingdom
Prior art keywords
producing
reducing agent
ferromagnetic
aqueous solution
salt
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.)
Expired
Application number
GB30697/75A
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to GB30697/75A priority Critical patent/GB1511379A/en
Publication of GB1511379A publication Critical patent/GB1511379A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/04—Obtaining nickel or cobalt by wet processes
    • C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B23/0461—Treatment or purification of solutions, e.g. obtained by leaching by chemical methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)

Abstract

1511379 Producing ferromagnetic powder FUJI PHOTO FILM CO Ltd 22 July 1975 30697/75 Heading C7D A ferromagnetic material is produced by mixing an aqueous solution of at least one salt of a ferromagnetic metal and whose pH has been adjusted to #3 with a solution of a reducing agent, at p#8, containing at least one boron hydride compound or a derivative thereof. The salt preferably contains one of Fe, Co, FeCo, FeNi, and FeNiCo, with, if desired salts of rare earth metals e.g. La, Ce, Nd, Sm, or Ti, Zr, Cr, Mn, W, Mo, Re, Pt group, Cu, Ag, Zn, Al, Sn, Pb, Sb, As or P. Suitable salts are the sulphates, sulphides, chlorides, nitrates, formates, acetates, and formamates. The reducing agent may be borazane, borane, borohydride. NaBH4, KBH4, dimethylaminoborane or diethylaminoborane and may be dissolved in water or methanol. The aqueous solution may contain pH adjusting agents and polar organic solvents, examples of which are given. A magnetic field may be applied during the reaction, e.g. 500-3000 Oe, and ultrasonic vibration may be used the reaction taking place at or below 65‹C at 0À5-5À0 atmospheres. The ferromagnetic powder is collected and prepared for use in the manufacture of tapes. Preferred alloys are Fe-Co with Ti, Cr, Mn, Ni, Cu, Zn, Al, Pb or P, and Fe-Co-Ni with one of these elements.
GB30697/75A 1975-07-22 1975-07-22 Process for producing a magnetic material and magnetic recording medium containing the same Expired GB1511379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB30697/75A GB1511379A (en) 1975-07-22 1975-07-22 Process for producing a magnetic material and magnetic recording medium containing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30697/75A GB1511379A (en) 1975-07-22 1975-07-22 Process for producing a magnetic material and magnetic recording medium containing the same

Publications (1)

Publication Number Publication Date
GB1511379A true GB1511379A (en) 1978-05-17

Family

ID=10311715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30697/75A Expired GB1511379A (en) 1975-07-22 1975-07-22 Process for producing a magnetic material and magnetic recording medium containing the same

Country Status (1)

Country Link
GB (1) GB1511379A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015485A1 (en) * 1979-03-10 1980-09-17 Bayer Ag Ferromagnetic metallic pigment essentially consisting of iron, and process for its preparation
FR2487709A1 (en) * 1980-07-31 1982-02-05 Hercules Inc PROCESS FOR THE PREPARATION OF ACRULAR METALLIC FERROMAGNETIC PARTICLES
CN100467173C (en) * 2007-05-24 2009-03-11 同济大学 A kind of preparation method of iron series amorphous nano element
EP2138251A1 (en) * 2007-04-13 2009-12-30 Sumitomo Osaka Cement Co., Ltd. Nickel-iron-zinc alloy nanoparticle
CN113070483A (en) * 2021-03-25 2021-07-06 东北大学 Method for preparing FeCoNi intermediate entropy alloy with low cost and short process
CN113707186A (en) * 2020-05-21 2021-11-26 昭和电工株式会社 Magnetic recording medium and magnetic storage device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015485A1 (en) * 1979-03-10 1980-09-17 Bayer Ag Ferromagnetic metallic pigment essentially consisting of iron, and process for its preparation
FR2487709A1 (en) * 1980-07-31 1982-02-05 Hercules Inc PROCESS FOR THE PREPARATION OF ACRULAR METALLIC FERROMAGNETIC PARTICLES
EP2138251A1 (en) * 2007-04-13 2009-12-30 Sumitomo Osaka Cement Co., Ltd. Nickel-iron-zinc alloy nanoparticle
EP2138251A4 (en) * 2007-04-13 2013-05-29 Sumitomo Osaka Cement Co Ltd Nickel-iron-zinc alloy nanoparticle
CN100467173C (en) * 2007-05-24 2009-03-11 同济大学 A kind of preparation method of iron series amorphous nano element
CN113707186A (en) * 2020-05-21 2021-11-26 昭和电工株式会社 Magnetic recording medium and magnetic storage device
CN113070483A (en) * 2021-03-25 2021-07-06 东北大学 Method for preparing FeCoNi intermediate entropy alloy with low cost and short process

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee