JPS635884B2 - - Google Patents
Info
- Publication number
- JPS635884B2 JPS635884B2 JP4740979A JP4740979A JPS635884B2 JP S635884 B2 JPS635884 B2 JP S635884B2 JP 4740979 A JP4740979 A JP 4740979A JP 4740979 A JP4740979 A JP 4740979A JP S635884 B2 JPS635884 B2 JP S635884B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- ferrite
- particle size
- less
- fine
- 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.)
- Expired
Links
- 239000000843 powder Substances 0.000 claims description 45
- 229910000859 α-Fe Inorganic materials 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 15
- 150000004703 alkoxides Chemical class 0.000 claims description 12
- 229910052596 spinel Inorganic materials 0.000 claims description 6
- 239000011029 spinel Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 238000000034 method Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000005245 sintering Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 5
- 230000007062 hydrolysis Effects 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 238000000975 co-precipitation Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Compounds Of Iron (AREA)
- Soft Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4740979A JPS55138803A (en) | 1979-04-18 | 1979-04-18 | Production of fine ferrite particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4740979A JPS55138803A (en) | 1979-04-18 | 1979-04-18 | Production of fine ferrite particle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55138803A JPS55138803A (en) | 1980-10-30 |
| JPS635884B2 true JPS635884B2 (enrdf_load_stackoverflow) | 1988-02-05 |
Family
ID=12774321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4740979A Granted JPS55138803A (en) | 1979-04-18 | 1979-04-18 | Production of fine ferrite particle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55138803A (enrdf_load_stackoverflow) |
-
1979
- 1979-04-18 JP JP4740979A patent/JPS55138803A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55138803A (en) | 1980-10-30 |