JPS5562105A - Production of magnetic alloy powder - Google Patents
Production of magnetic alloy powderInfo
- Publication number
- JPS5562105A JPS5562105A JP13393978A JP13393978A JPS5562105A JP S5562105 A JPS5562105 A JP S5562105A JP 13393978 A JP13393978 A JP 13393978A JP 13393978 A JP13393978 A JP 13393978A JP S5562105 A JPS5562105 A JP S5562105A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- magnetic
- metals
- iron oxide
- salt
- 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
- 239000000843 powder Substances 0.000 title abstract 6
- 229910001004 magnetic alloy Inorganic materials 0.000 title abstract 3
- 239000002184 metal Substances 0.000 abstract 6
- 229910052751 metal Inorganic materials 0.000 abstract 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- 239000006247 magnetic powder Substances 0.000 abstract 3
- 150000002739 metals Chemical class 0.000 abstract 3
- 150000003839 salts Chemical class 0.000 abstract 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- -1 Co3O4when Co salt Chemical class 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(II,III) oxide Inorganic materials [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910006297 γ-Fe2O3 Inorganic materials 0.000 abstract 1
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE: To produce magnetic alloy powder of uniform alloy composition excelling in grain shape, by uniformly solid-solving a metal other than Fe, such as Co and Ni, in the inside of magnetic powder of iron oxide, and heating and reducing in a reducing gas.
CONSTITUTION: To γ-Fe2O3 powder, Fe3O4 powder, or intermediate powder thereof, a salt of said metal is added by the rate so that the content of metals other than Fe may be 0.5W50wt%, especially 1W20wt%. This mixture is heated in water medium by water heat reaction method or treated similarly to uniformly solid-solve the metals other than Fe, so that modified iron oxide magnetic powder may be obtained. Such metals other than Fe may be Co, Ni, Cr, Mn, etc. In the water heat reaction method, water insoluble metal salt, such as Co3O4when Co salt, is used. Said modified iron oxide magnetic powder is heated at reducing temperature of usually about 300W450°C, by using a reducing gas such as CO, and is reduced. The obtained magnetic alloy powder is used as high density magnetic recording medium, such as magnetic tape and magnetic disk.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13393978A JPS5562105A (en) | 1978-10-30 | 1978-10-30 | Production of magnetic alloy powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13393978A JPS5562105A (en) | 1978-10-30 | 1978-10-30 | Production of magnetic alloy powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5562105A true JPS5562105A (en) | 1980-05-10 |
| JPS6135243B2 JPS6135243B2 (en) | 1986-08-12 |
Family
ID=15116596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13393978A Granted JPS5562105A (en) | 1978-10-30 | 1978-10-30 | Production of magnetic alloy powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5562105A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5573803A (en) * | 1978-11-25 | 1980-06-03 | Hitachi Maxell Ltd | Production of magnetic alloy powder |
| JPS59207024A (en) * | 1983-05-10 | 1984-11-24 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
| JPH03116414A (en) * | 1990-08-31 | 1991-05-17 | Konica Corp | Magnetic recording medium |
| JPH03150721A (en) * | 1990-09-21 | 1991-06-27 | Konica Corp | Magnetic recording medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4882395A (en) * | 1972-02-04 | 1973-11-02 | ||
| JPS4922630A (en) * | 1972-06-24 | 1974-02-28 | ||
| JPS49119197A (en) * | 1973-03-20 | 1974-11-14 | ||
| JPS49135867A (en) * | 1973-05-02 | 1974-12-27 | ||
| JPS5085612A (en) * | 1973-11-30 | 1975-07-10 | ||
| JPS5285054A (en) * | 1976-01-09 | 1977-07-15 | Hitachi Ltd | Method of stabilizing metal powder |
| JPS5297357A (en) * | 1976-02-13 | 1977-08-16 | Sony Corp | Method of making magnetic alloy powder containing iron and copper as main constituents |
| JPS5328298A (en) * | 1976-08-27 | 1978-03-16 | Victor Co Of Japan Ltd | Iron or iron alloy pulverule nt body and magnetic recording medium |
-
1978
- 1978-10-30 JP JP13393978A patent/JPS5562105A/en active Granted
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4882395A (en) * | 1972-02-04 | 1973-11-02 | ||
| JPS4922630A (en) * | 1972-06-24 | 1974-02-28 | ||
| JPS49119197A (en) * | 1973-03-20 | 1974-11-14 | ||
| JPS49135867A (en) * | 1973-05-02 | 1974-12-27 | ||
| JPS5085612A (en) * | 1973-11-30 | 1975-07-10 | ||
| JPS5285054A (en) * | 1976-01-09 | 1977-07-15 | Hitachi Ltd | Method of stabilizing metal powder |
| JPS5297357A (en) * | 1976-02-13 | 1977-08-16 | Sony Corp | Method of making magnetic alloy powder containing iron and copper as main constituents |
| JPS5328298A (en) * | 1976-08-27 | 1978-03-16 | Victor Co Of Japan Ltd | Iron or iron alloy pulverule nt body and magnetic recording medium |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5573803A (en) * | 1978-11-25 | 1980-06-03 | Hitachi Maxell Ltd | Production of magnetic alloy powder |
| JPS622002B2 (en) * | 1978-11-25 | 1987-01-17 | Hitachi Maxell | |
| 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 | |
| JPH03116414A (en) * | 1990-08-31 | 1991-05-17 | Konica Corp | Magnetic recording medium |
| JPH03150721A (en) * | 1990-09-21 | 1991-06-27 | Konica Corp | Magnetic recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6135243B2 (en) | 1986-08-12 |
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