GB1261399A - Process for preparing supported permanently-magnetizable metals or alloys - Google Patents
Process for preparing supported permanently-magnetizable metals or alloysInfo
- Publication number
- GB1261399A GB1261399A GB08245/69A GB1824569A GB1261399A GB 1261399 A GB1261399 A GB 1261399A GB 08245/69 A GB08245/69 A GB 08245/69A GB 1824569 A GB1824569 A GB 1824569A GB 1261399 A GB1261399 A GB 1261399A
- Authority
- GB
- United Kingdom
- Prior art keywords
- precipitate
- solution
- carrier
- alloy
- april
- 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
- 239000000956 alloy Substances 0.000 title abstract 3
- 229910045601 alloy Inorganic materials 0.000 title abstract 3
- 229910052751 metal Inorganic materials 0.000 title abstract 3
- 239000002184 metal Substances 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 150000002739 metals Chemical class 0.000 title 1
- 239000002244 precipitate Substances 0.000 abstract 4
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 abstract 2
- 239000012876 carrier material Substances 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- 229910000531 Co alloy Inorganic materials 0.000 abstract 1
- 229910004298 SiO 2 Inorganic materials 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910021645 metal ion Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 230000006911 nucleation Effects 0.000 abstract 1
- 238000010899 nucleation Methods 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/8416—Processes or apparatus specially adapted for manufacturing record carriers coating a support with a magnetic layer by precipitation
-
- 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
- G11B5/7061—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 with a non-magnetic core
-
- 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
- H01F1/063—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 with a non magnetic core
-
- 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
- H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
- H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
- H01F1/111—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles with a non-magnetic core
Abstract
1,261,399. Magnetic compositions. STAMICARBON N.V. 9 April, 1969 [9 April, 1968 (2)], No. 18245/69. Heading H1H. [Also in Divisions C1 and C7] Supported permanently magnetizable metal (s) or alloy(s) are produced by suspending a finelydivided carrier material in a solution containing the metal ions and gradually generating OH<SP>1</SP> ions homogeneously in the solution at a sufficient rate to deposit the active element(s) on the carrier but not fast enough to get nucleation of the pure precipitate in the solution, the precipitate being hydroxide or hydrated oxide, removing the carrier from the solution and then reducing the precipitate to give metal or alloy particles of size in the single-domain range. The reduction may be by means of hydrogen, optionally in the presence of water vapour, or by hydrazine and the precipitate may be calcined in air before reduction. The loaded carrier materials may be impregnated under vacuum with a polymerizable monomer or molten polymer for application to tapes or for the production of sheets or moulded bodies to form magnetic recording material. The examples refer to the deposition of Fe or Ni- Co alloy on SiO 2 particles.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6800237A NL6800237A (en) | 1968-01-06 | 1968-01-06 | |
| NL6804971A NL6804971A (en) | 1968-04-09 | 1968-04-09 | |
| NL6804970A NL6804970A (en) | 1968-04-09 | 1968-04-09 | |
| NL6816682A NL6816682A (en) | 1968-11-21 | 1968-11-21 | Permanently magnetisable substance |
| NL6818247A NL6818247A (en) | 1968-12-19 | 1968-12-19 | Ferromagnetic material prepn. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1261399A true GB1261399A (en) | 1972-01-26 |
Family
ID=27532474
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08245/69A Expired GB1261399A (en) | 1968-01-06 | 1969-04-09 | Process for preparing supported permanently-magnetizable metals or alloys |
| GB56715/69A Expired GB1291064A (en) | 1968-01-06 | 1969-11-19 | Permanently magnetizable material |
| GB1295440D Expired GB1295440A (en) | 1968-01-06 | 1969-12-17 |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB56715/69A Expired GB1291064A (en) | 1968-01-06 | 1969-11-19 | Permanently magnetizable material |
| GB1295440D Expired GB1295440A (en) | 1968-01-06 | 1969-12-17 |
Country Status (10)
| Country | Link |
|---|---|
| JP (2) | JPS4912959B1 (en) |
| AT (2) | AT295175B (en) |
| BE (3) | BE731186A (en) |
| CH (2) | CH546712A (en) |
| DE (3) | DE1917644A1 (en) |
| DK (1) | DK134932B (en) |
| ES (2) | ES373717A1 (en) |
| FR (3) | FR2005878A1 (en) |
| GB (3) | GB1261399A (en) |
| SE (2) | SE352767B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2246026A1 (en) * | 1971-09-21 | 1973-03-29 | Union Carbide Corp | THERMAL ARYLIMIDES |
| NL7708959A (en) * | 1977-08-15 | 1979-02-19 | Philips Nv | PROCEDURE FOR FORMING A MAGNETO-OPTIC POLYCRYSTALLINE COBALT FERRITE LAYER AND COBALT FERRITE LAYER MANUFACTURED BY THE PROCESS. |
| JPS59111929A (en) * | 1982-12-15 | 1984-06-28 | Masanori Abe | Preparation of ferrite film |
| JPS6310163A (en) * | 1986-06-30 | 1988-01-16 | Nippon Paint Co Ltd | Toner coated with magnetic material |
-
1969
- 1969-04-05 DE DE19691917644 patent/DE1917644A1/en active Pending
- 1969-04-08 BE BE731186D patent/BE731186A/xx unknown
- 1969-04-09 FR FR6910908A patent/FR2005878A1/fr not_active Withdrawn
- 1969-04-09 GB GB08245/69A patent/GB1261399A/en not_active Expired
- 1969-04-09 SE SE05023/69A patent/SE352767B/xx unknown
- 1969-11-18 CH CH1712369A patent/CH546712A/en not_active IP Right Cessation
- 1969-11-19 AT AT1081369A patent/AT295175B/en active
- 1969-11-19 GB GB56715/69A patent/GB1291064A/en not_active Expired
- 1969-11-20 ES ES373717A patent/ES373717A1/en not_active Expired
- 1969-11-21 BE BE742017D patent/BE742017A/xx unknown
- 1969-11-21 JP JP44093548A patent/JPS4912959B1/ja active Pending
- 1969-11-21 FR FR6940166A patent/FR2030660A5/fr not_active Expired
- 1969-11-21 SE SE16062/69A patent/SE352978B/xx unknown
- 1969-11-21 DK DK619869AA patent/DK134932B/en unknown
- 1969-11-21 DE DE1958606A patent/DE1958606C3/en not_active Expired
- 1969-12-17 GB GB1295440D patent/GB1295440A/en not_active Expired
- 1969-12-18 CH CH1886869A patent/CH558980A/en unknown
- 1969-12-19 FR FR6944049A patent/FR2026578A6/fr not_active Expired
- 1969-12-19 BE BE743394D patent/BE743394A/xx unknown
- 1969-12-19 JP JP44102388A patent/JPS526958B1/ja active Pending
- 1969-12-19 AT AT1186469A patent/AT297660B/en not_active IP Right Cessation
- 1969-12-19 DE DE19691963828 patent/DE1963828A1/en active Pending
- 1969-12-19 ES ES374722A patent/ES374722A2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4912959B1 (en) | 1974-03-28 |
| AT295175B (en) | 1971-12-27 |
| SE352767B (en) | 1973-01-08 |
| DE1958606B2 (en) | 1978-07-20 |
| SE352978B (en) | 1973-01-15 |
| BE731186A (en) | 1969-10-08 |
| ES373717A1 (en) | 1972-04-16 |
| GB1291064A (en) | 1972-09-27 |
| GB1295440A (en) | 1972-11-08 |
| BE742017A (en) | 1970-05-21 |
| FR2030660A5 (en) | 1970-11-13 |
| DE1958606C3 (en) | 1979-04-19 |
| JPS526958B1 (en) | 1977-02-25 |
| DE1958606A1 (en) | 1970-06-18 |
| DK134932C (en) | 1977-07-04 |
| DE1963828A1 (en) | 1970-10-08 |
| DK134932B (en) | 1977-02-14 |
| ES374722A2 (en) | 1972-04-01 |
| AT297660B (en) | 1972-04-10 |
| FR2005878A1 (en) | 1969-12-19 |
| DE1917644A1 (en) | 1970-09-10 |
| FR2026578A6 (en) | 1970-09-18 |
| CH546712A (en) | 1974-03-15 |
| CH558980A (en) | 1975-02-14 |
| BE743394A (en) | 1970-06-19 |
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