GB1125093A - Production of magnetizable metallic particles suitable for the production of magnetic recording media - Google Patents
Production of magnetizable metallic particles suitable for the production of magnetic recording mediaInfo
- Publication number
- GB1125093A GB1125093A GB777/66A GB77766A GB1125093A GB 1125093 A GB1125093 A GB 1125093A GB 777/66 A GB777/66 A GB 777/66A GB 77766 A GB77766 A GB 77766A GB 1125093 A GB1125093 A GB 1125093A
- Authority
- GB
- United Kingdom
- Prior art keywords
- production
- salt
- magnetic recording
- recording media
- metallic particles
- 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
- 239000013528 metallic particle Substances 0.000 title 1
- 150000003839 salts Chemical class 0.000 abstract 5
- 239000003513 alkali Substances 0.000 abstract 3
- 239000003518 caustics Substances 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 229910017052 cobalt Inorganic materials 0.000 abstract 2
- 239000010941 cobalt Substances 0.000 abstract 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 2
- 239000002244 precipitate Substances 0.000 abstract 2
- 239000000243 solution Substances 0.000 abstract 2
- 229910000859 α-Fe Inorganic materials 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 239000012266 salt solution Substances 0.000 abstract 1
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
- G11B5/656—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Co
-
- 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
-
- 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
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2666—Other ferrites containing nickel, copper or cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- 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
-
- 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
- G11B5/70621—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 Co metal or alloys
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Structural Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB80058A DE1247026B (de) | 1965-01-09 | 1965-01-09 | Verfahren zur Herstellung von fuer die Herstellung von Magnetogrammtraegern geeigneten, magnetisierbaren metallischen Teilchen |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1125093A true GB1125093A (en) | 1968-08-28 |
Family
ID=6980566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB777/66A Expired GB1125093A (en) | 1965-01-09 | 1966-01-07 | Production of magnetizable metallic particles suitable for the production of magnetic recording media |
Country Status (5)
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4305753A (en) | 1980-07-31 | 1981-12-15 | Hercules Incorporated | Process for producing ferromagnetic metallic particles |
US4306921A (en) | 1978-03-16 | 1981-12-22 | Kanto Denka Kogyo Co., Ltd. | Production of magnetic powder |
US4328282A (en) | 1980-02-11 | 1982-05-04 | Basf Aktiengesellschaft | Magnetic recording media |
US4384892A (en) | 1978-03-16 | 1983-05-24 | Kanto Denka Kogyo Co., Ltd. | Production of magnetic powder |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA988704A (en) * | 1971-07-19 | 1976-05-11 | Akira Okazoe | Ferro-magnetic acicular particles for recording medium |
JPS5529577B2 (US07922777-20110412-C00004.png) * | 1972-02-04 | 1980-08-05 | ||
JPS6044805B2 (ja) * | 1976-08-27 | 1985-10-05 | 日本ビクター株式会社 | 磁気記録媒体の製造方法 |
DE2909995C2 (de) * | 1978-03-16 | 1984-06-28 | Kanto Denka Kogyo Co., Ltd., Tokyo | Verfahren zur Herstellung eines Magnetpulvers |
US4218240A (en) * | 1979-05-14 | 1980-08-19 | Gte Products Corporation | Method for producing cobaltic hexammine compounds and cobalt metal powder |
-
1965
- 1965-01-09 DE DEB80058A patent/DE1247026B/de active Pending
-
1966
- 1966-01-05 FR FR44942A patent/FR1462867A/fr not_active Expired
- 1966-01-07 NL NL666600221A patent/NL145981B/xx not_active IP Right Cessation
- 1966-01-07 BE BE674825D patent/BE674825A/xx not_active IP Right Cessation
- 1966-01-07 GB GB777/66A patent/GB1125093A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4306921A (en) | 1978-03-16 | 1981-12-22 | Kanto Denka Kogyo Co., Ltd. | Production of magnetic powder |
US4384892A (en) | 1978-03-16 | 1983-05-24 | Kanto Denka Kogyo Co., Ltd. | Production of magnetic powder |
US4404024A (en) | 1978-03-16 | 1983-09-13 | Kanto Denka Kogyo Co., Ltd. | Production of magnetic powder |
US4447264A (en) * | 1978-03-16 | 1984-05-08 | Kanto Denka Kogyo Co., Ltd. | Production of magnetic powder |
US4328282A (en) | 1980-02-11 | 1982-05-04 | Basf Aktiengesellschaft | Magnetic recording media |
US4305753A (en) | 1980-07-31 | 1981-12-15 | Hercules Incorporated | Process for producing ferromagnetic metallic particles |
DE3130425A1 (de) * | 1980-07-31 | 1982-06-16 | Hercules Inc., 19899 Wilmington, Del. | Verfahren zur herstellung nadel (kristall)-foermiger,ferromagnetischer metallpartikel fuer magnetische aufzeichnungsmedien |
Also Published As
Publication number | Publication date |
---|---|
NL145981B (nl) | 1975-05-15 |
BE674825A (US07922777-20110412-C00004.png) | 1966-07-07 |
FR1462867A (fr) | 1966-12-16 |
NL6600221A (US07922777-20110412-C00004.png) | 1966-07-11 |
DE1247026B (de) | 1967-08-10 |
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