JPS4887397A - - Google Patents
Info
- Publication number
- JPS4887397A JPS4887397A JP47018627A JP1862772A JPS4887397A JP S4887397 A JPS4887397 A JP S4887397A JP 47018627 A JP47018627 A JP 47018627A JP 1862772 A JP1862772 A JP 1862772A JP S4887397 A JPS4887397 A JP S4887397A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
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- 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
- H01F1/112—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 skin
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- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/18—Non-metallic particles coated with metal
Landscapes
- Health & Medical Sciences (AREA)
- Dermatology (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP47018627A JPS4887397A (bg) | 1972-02-23 | 1972-02-23 | |
| DE2308791A DE2308791C3 (de) | 1972-02-23 | 1973-02-22 | Verfahren zum Herstellen eines magnetischen Materials in Pulverform |
| US05/532,681 US3977985A (en) | 1972-02-23 | 1974-12-13 | Magnetic recording medium comprising cobalt or cobalt alloy coated particles of spicular magnetite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP47018627A JPS4887397A (bg) | 1972-02-23 | 1972-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4887397A true JPS4887397A (bg) | 1973-11-16 |
Family
ID=11976842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP47018627A Pending JPS4887397A (bg) | 1972-02-23 | 1972-02-23 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS4887397A (bg) |
| DE (1) | DE2308791C3 (bg) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4916899A (bg) * | 1972-06-12 | 1974-02-14 | ||
| JPS4926800A (bg) * | 1972-07-05 | 1974-03-09 | ||
| US4873010A (en) * | 1984-04-28 | 1989-10-10 | Toda Kogyo Corp. | Spindle-like magnetic iron oxide particles and process for producing the same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2903593C3 (de) * | 1979-01-31 | 1982-05-06 | Bayer Ag, 5090 Leverkusen | Kobalt-dotierte ferrimagnetische Eisenoxide und Verfahren zu deren Herstellung |
| JPS5999706A (ja) * | 1982-11-29 | 1984-06-08 | Kanto Denka Kogyo Kk | 磁気記録用強磁性金属粉末の製造方法 |
| JPH0262007A (ja) * | 1988-08-05 | 1990-03-01 | Potters Ind Inc | 粒状磁性材料およびその製造方法 |
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1972
- 1972-02-23 JP JP47018627A patent/JPS4887397A/ja active Pending
-
1973
- 1973-02-22 DE DE2308791A patent/DE2308791C3/de not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4916899A (bg) * | 1972-06-12 | 1974-02-14 | ||
| JPS5625770B2 (bg) * | 1972-06-12 | 1981-06-15 | ||
| JPS4926800A (bg) * | 1972-07-05 | 1974-03-09 | ||
| US4873010A (en) * | 1984-04-28 | 1989-10-10 | Toda Kogyo Corp. | Spindle-like magnetic iron oxide particles and process for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2308791B2 (de) | 1977-12-29 |
| DE2308791C3 (de) | 1978-08-17 |
| DE2308791A1 (de) | 1973-08-30 |