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 sameInfo
- 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
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.
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)
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 | Method for preparing ferrum series non-crystalline state nanometer simple substance |
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 |
-
1975
- 1975-07-22 GB GB30697/75A patent/GB1511379A/en not_active Expired
Cited By (7)
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 | Method for preparing ferrum series non-crystalline state nanometer simple substance |
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 |