JPS57116709A - Manufacture of metallic magnetic powder - Google Patents
Manufacture of metallic magnetic powderInfo
- Publication number
- JPS57116709A JPS57116709A JP56002315A JP231581A JPS57116709A JP S57116709 A JPS57116709 A JP S57116709A JP 56002315 A JP56002315 A JP 56002315A JP 231581 A JP231581 A JP 231581A JP S57116709 A JPS57116709 A JP S57116709A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- iron
- under heating
- metallic
- reduction under
- 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.)
- Granted
Links
Abstract
PURPOSE: To obtain metallic magnetic powder with superior magnetic characteristics by sticking an Al compound to powder of a metallic compound consisting essentially of iron oxyhydroxide or iron oxide, granulating the powder, and carrying out reduction under heating.
CONSTITUTION: An Al compound is stuck to the particle surfaces of powder of a metallic compound consisting essentially of iron oxyhydroxide or iron oxide. The powder is heat treated at 200W600°C, granulated, and optionally heat treated at 200W600°C. Reduction under heating is then carried out at about 300W600°C in a reducing atmosphere of gaseous hydrogen or the like. By this method the reduction under heating can be carried out sufficiently and uniformly while effectively inhibiting sintering among the granules and the particles of the powder and the deformation of the particles. As a result, iron-base metallic magnetic powder with superior magnetic characteristics is obtd.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56002315A JPS57116709A (en) | 1981-01-10 | 1981-01-10 | Manufacture of metallic magnetic powder |
US06/337,149 US4400337A (en) | 1981-01-10 | 1982-01-05 | Method for production of metal magnetic particles |
DE8282100091T DE3261979D1 (en) | 1981-01-10 | 1982-01-08 | Method for production of metal magnetic particles |
EP82100091A EP0056257B1 (en) | 1981-01-10 | 1982-01-08 | Method for production of metal magnetic particles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56002315A JPS57116709A (en) | 1981-01-10 | 1981-01-10 | Manufacture of metallic magnetic powder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57116709A true JPS57116709A (en) | 1982-07-20 |
JPH0152443B2 JPH0152443B2 (en) | 1989-11-08 |
Family
ID=11525896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56002315A Granted JPS57116709A (en) | 1981-01-10 | 1981-01-10 | Manufacture of metallic magnetic powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57116709A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59207024A (en) * | 1983-05-10 | 1984-11-24 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS6362803A (en) * | 1986-09-02 | 1988-03-19 | Mitsui Toatsu Chem Inc | Production of ferromagnetic metallic power |
JPS63103423A (en) * | 1986-10-20 | 1988-05-09 | Fuji Photo Film Co Ltd | Magnetic recording medium |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52122213A (en) * | 1976-04-05 | 1977-10-14 | Hitachi Ltd | Production of ferromagnetic metal powder |
-
1981
- 1981-01-10 JP JP56002315A patent/JPS57116709A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52122213A (en) * | 1976-04-05 | 1977-10-14 | Hitachi Ltd | Production of ferromagnetic metal powder |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59207024A (en) * | 1983-05-10 | 1984-11-24 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS6322366B2 (en) * | 1983-05-10 | 1988-05-11 | Konika Kk | |
JPS6362803A (en) * | 1986-09-02 | 1988-03-19 | Mitsui Toatsu Chem Inc | Production of ferromagnetic metallic power |
JPH0676607B2 (en) * | 1986-09-02 | 1994-09-28 | 三井東圧化学株式会社 | Method for producing ferromagnetic metal powder |
JPS63103423A (en) * | 1986-10-20 | 1988-05-09 | Fuji Photo Film Co Ltd | Magnetic recording medium |
JPH0610860B2 (en) * | 1986-10-20 | 1994-02-09 | 富士写真フイルム株式会社 | Magnetic recording medium |
Also Published As
Publication number | Publication date |
---|---|
JPH0152443B2 (en) | 1989-11-08 |
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