JPS5635705A - Production of magnetic alloy powder - Google Patents
Production of magnetic alloy powderInfo
- Publication number
- JPS5635705A JPS5635705A JP11199879A JP11199879A JPS5635705A JP S5635705 A JPS5635705 A JP S5635705A JP 11199879 A JP11199879 A JP 11199879A JP 11199879 A JP11199879 A JP 11199879A JP S5635705 A JPS5635705 A JP S5635705A
- Authority
- JP
- Japan
- Prior art keywords
- iron oxide
- alloy powder
- magnetic alloy
- production
- heated
- 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.)
- Pending
Links
- 239000000843 powder Substances 0.000 title abstract 3
- 229910001004 magnetic alloy Inorganic materials 0.000 title abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 8
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract 5
- 229910052772 Samarium Inorganic materials 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 229910006297 γ-Fe2O3 Inorganic materials 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- -1 for example Inorganic materials 0.000 abstract 1
- 229910052746 lanthanum Inorganic materials 0.000 abstract 1
- 230000005415 magnetization Effects 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 229910001868 water Inorganic materials 0.000 abstract 1
- 229910052727 yttrium Inorganic materials 0.000 abstract 1
- 229910003145 α-Fe2O3 Inorganic materials 0.000 abstract 1
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE: To obtain magnetic alloy powder which is high in saturation magnetization and has high coercive force by depositing compound of Cr, Al, Sm, etc. on the surfaces of iron oxide powder and heat treating the same at the specific temperature after reduction.
CONSTITUTION: Needle iron oxide, for example, α-Fe2O3, γ-Fe2O3 magnetite Fe3O4 or iron oxide of the oxidation state of the intermediate of γ-Fe2O3 and Fe3O4, or water-containing iron oxide of needle form, that is, geothite, is used as nuclear crystal and the compound of at least one of Cr, Al, Sm, Y, La is deposited thereon. This is heated at 400W600°C in a reducing atmosphere, whereby it is reduced. After the reducing, it is heated to 400W550°C in an inert atmosphere, whereby it is annealed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11199879A JPS5635705A (en) | 1979-08-31 | 1979-08-31 | Production of magnetic alloy powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11199879A JPS5635705A (en) | 1979-08-31 | 1979-08-31 | Production of magnetic alloy powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5635705A true JPS5635705A (en) | 1981-04-08 |
Family
ID=14575380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11199879A Pending JPS5635705A (en) | 1979-08-31 | 1979-08-31 | Production of magnetic alloy powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5635705A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59207024A (en) * | 1983-05-10 | 1984-11-24 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
| JP2013236021A (en) * | 2012-05-10 | 2013-11-21 | Dowa Electronics Materials Co Ltd | Magnetic part, metal powder used therein and manufacturing method therefor |
-
1979
- 1979-08-31 JP JP11199879A patent/JPS5635705A/en active Pending
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 |
| JPS6322366B2 (en) * | 1983-05-10 | 1988-05-11 | Konika Kk | |
| JP2013236021A (en) * | 2012-05-10 | 2013-11-21 | Dowa Electronics Materials Co Ltd | Magnetic part, metal powder used therein and manufacturing method therefor |
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