JPS5582408A - Preparing iron powder and ferrocobalt alloy powder for magnetic tape - Google Patents
Preparing iron powder and ferrocobalt alloy powder for magnetic tapeInfo
- Publication number
- JPS5582408A JPS5582408A JP15573978A JP15573978A JPS5582408A JP S5582408 A JPS5582408 A JP S5582408A JP 15573978 A JP15573978 A JP 15573978A JP 15573978 A JP15573978 A JP 15573978A JP S5582408 A JPS5582408 A JP S5582408A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- iron oxide
- spicular
- organic matter
- reducing
- 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
Landscapes
- Paints Or Removers (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Magnetic Record Carriers (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE: To obtain powder with high magnetic flux density and strong magnetic reluctance by reducing iron oxide with its original spicular form left, using organic matter as reducing agent, in such a process as to agglutinate adhesive organic matter on the surface of spicular iron oxide powder and heat it in a reducing and other ambience.
CONSTITUTION: Adhesive organic matter such as cellulose acetate, ethyl cellulose or styrene is agglutinated on to the surface of the spicular powder of iron oxide or Co-containing iron oxide, which is heated in the ambience of reducing gas or inert gas or in vacuum in a comparative low temperature less than 500°C. Ferro-oxide powder is reduced by the help of agglutinated organic matter as the reducing agent. By using iron powder with high magnetic flux density and strong magnetic reluctance obtained through reduction of iron oxide powder with spicular form left in this way, the frequency characteristic of magnetic tape can be improved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53155739A JPS606525B2 (en) | 1978-12-19 | 1978-12-19 | Manufacturing method of iron powder and iron↓-cobalt alloy powder for magnetic tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53155739A JPS606525B2 (en) | 1978-12-19 | 1978-12-19 | Manufacturing method of iron powder and iron↓-cobalt alloy powder for magnetic tape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5582408A true JPS5582408A (en) | 1980-06-21 |
| JPS606525B2 JPS606525B2 (en) | 1985-02-19 |
Family
ID=15612375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53155739A Expired JPS606525B2 (en) | 1978-12-19 | 1978-12-19 | Manufacturing method of iron powder and iron↓-cobalt alloy powder for magnetic tape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS606525B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5531922A (en) * | 1992-08-04 | 1996-07-02 | Toda Kogyo Corporation | Granulated particles for magnetic particles for magnetic recording, and process for producing the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102366839B (en) * | 2011-09-28 | 2014-04-02 | 哈尔滨电机厂有限责任公司 | Method for preparing rod-like ferrocobalt alloy powder without adopting template |
-
1978
- 1978-12-19 JP JP53155739A patent/JPS606525B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5531922A (en) * | 1992-08-04 | 1996-07-02 | Toda Kogyo Corporation | Granulated particles for magnetic particles for magnetic recording, and process for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS606525B2 (en) | 1985-02-19 |
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