JPH0122205B2 - - Google Patents
Info
- Publication number
- JPH0122205B2 JPH0122205B2 JP13212680A JP13212680A JPH0122205B2 JP H0122205 B2 JPH0122205 B2 JP H0122205B2 JP 13212680 A JP13212680 A JP 13212680A JP 13212680 A JP13212680 A JP 13212680A JP H0122205 B2 JPH0122205 B2 JP H0122205B2
- Authority
- JP
- Japan
- Prior art keywords
- fine particles
- hexagonal ferrite
- magnetic
- ferrite
- sio
- 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
- 229910000859 α-Fe Inorganic materials 0.000 claims description 31
- 239000010419 fine particle Substances 0.000 claims description 28
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 6
- 239000006247 magnetic powder Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007496 glass forming Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000010306 acid treatment Methods 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 230000005415 magnetization Effects 0.000 description 11
- 239000002245 particle Substances 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 238000002425 crystallisation Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13212680A JPS5756327A (en) | 1980-09-22 | 1980-09-22 | Manufacture of magnetic powder for magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13212680A JPS5756327A (en) | 1980-09-22 | 1980-09-22 | Manufacture of magnetic powder for magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5756327A JPS5756327A (en) | 1982-04-03 |
| JPH0122205B2 true JPH0122205B2 (enrdf_load_stackoverflow) | 1989-04-25 |
Family
ID=15074005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13212680A Granted JPS5756327A (en) | 1980-09-22 | 1980-09-22 | Manufacture of magnetic powder for magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5756327A (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6081804A (ja) * | 1983-10-12 | 1985-05-09 | Toda Kogyo Corp | 磁気記録用六角板状Ｂａフエライト微粒子粉末及びその製造法 |
| JPS60262403A (ja) * | 1984-06-08 | 1985-12-25 | Toshiba Glass Co Ltd | 磁性粉末の製造方法 |
-
1980
- 1980-09-22 JP JP13212680A patent/JPS5756327A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5756327A (en) | 1982-04-03 |