JPS55154501A - Ferromagnetic powder and its production - Google Patents
Ferromagnetic powder and its productionInfo
- Publication number
- JPS55154501A JPS55154501A JP6204979A JP6204979A JPS55154501A JP S55154501 A JPS55154501 A JP S55154501A JP 6204979 A JP6204979 A JP 6204979A JP 6204979 A JP6204979 A JP 6204979A JP S55154501 A JPS55154501 A JP S55154501A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- metal iron
- heating
- electric furnace
- reduced
- 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 6
- 230000005294 ferromagnetic effect Effects 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 6
- 239000011575 calcium Substances 0.000 abstract 4
- 239000002184 metal Substances 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- CZNCTWNLEIFMDX-UHFFFAOYSA-N [Fe].O=O Chemical compound [Fe].O=O CZNCTWNLEIFMDX-UHFFFAOYSA-N 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000001110 calcium chloride Substances 0.000 abstract 1
- 229910001628 calcium chloride Inorganic materials 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 229910006540 α-FeOOH 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 the powder of superior magnetic characteristic by depositing the specific amount of Ca atoms on metal iron surfaces.
CONSTITUTION: Ca components are deposited on the surfaces of the needle-form particle powder composed primarily of ion oxide or iron oxy-oxide, in such a manner that the atom ratio of Ca/Fe become 0.001W0.05, and this is reduced by heating to obtain the powder composed primarily of metal iron. For example, CaCl2. 2H2O 4.61g is dissolved in pure water 1l and α-FeOOH of grain size about 0.5μm 100g is suspended in this under stirring. This is evaporated of its moisture content at 100°C in a dryer and the resulted powder is heated for 2hr at 600°C in an electric furnace. Next, this powder is reduced by heating at 300W500°C at hydrogen flow 1l/min in the electric furnace. This yields the metal iron powder containing calcium of superior magnetic characteristic.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6204979A JPS55154501A (en) | 1979-05-19 | 1979-05-19 | Ferromagnetic powder and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6204979A JPS55154501A (en) | 1979-05-19 | 1979-05-19 | Ferromagnetic powder and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55154501A true JPS55154501A (en) | 1980-12-02 |
Family
ID=13188906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6204979A Pending JPS55154501A (en) | 1979-05-19 | 1979-05-19 | Ferromagnetic powder and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55154501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819733A (en) * | 1981-07-28 | 1983-02-04 | Toshiba Corp | Magnetic recording medium and its manufacture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5125455A (en) * | 1974-07-16 | 1976-03-02 | Basf Ag | Shinjono tetsuganjukyojiseikinzokupigumentono seiho |
| JPS53110100A (en) * | 1977-03-03 | 1978-09-26 | Du Pont | Method of making needleeshaped alphaairon particles and its utilization |
| JPS55115902A (en) * | 1979-02-24 | 1980-09-06 | Basf Ag | Production of needle like ferromagnetic iron particle |
-
1979
- 1979-05-19 JP JP6204979A patent/JPS55154501A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5125455A (en) * | 1974-07-16 | 1976-03-02 | Basf Ag | Shinjono tetsuganjukyojiseikinzokupigumentono seiho |
| JPS53110100A (en) * | 1977-03-03 | 1978-09-26 | Du Pont | Method of making needleeshaped alphaairon particles and its utilization |
| JPS55115902A (en) * | 1979-02-24 | 1980-09-06 | Basf Ag | Production of needle like ferromagnetic iron particle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819733A (en) * | 1981-07-28 | 1983-02-04 | Toshiba Corp | Magnetic recording medium and its manufacture |
| JPS6250889B2 (en) * | 1981-07-28 | 1987-10-27 | Tokyo Shibaura Electric Co |
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