JPH0312442B2 - - Google Patents
Info
- Publication number
- JPH0312442B2 JPH0312442B2 JP56139663A JP13966381A JPH0312442B2 JP H0312442 B2 JPH0312442 B2 JP H0312442B2 JP 56139663 A JP56139663 A JP 56139663A JP 13966381 A JP13966381 A JP 13966381A JP H0312442 B2 JPH0312442 B2 JP H0312442B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic powder
- less
- ferrite
- magnetoplumbite
- fine particles
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 35
- 229910000859 α-Fe Inorganic materials 0.000 claims description 35
- 239000002245 particle Substances 0.000 claims description 30
- 239000006247 magnetic powder Substances 0.000 claims description 24
- 239000010419 fine particle Substances 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000007496 glass forming Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 229910020517 Co—Ti Inorganic materials 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- 229910052745 lead Inorganic materials 0.000 claims description 3
- 238000005280 amorphization Methods 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical group [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 description 9
- 229910001566 austenite Inorganic materials 0.000 description 7
- 230000008025 crystallization Effects 0.000 description 7
- 230000005415 magnetization Effects 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 229910020641 Co Zr Inorganic materials 0.000 description 2
- 229910020520 Co—Zr Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000013081 microcrystal Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910020516 Co—V Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- -1 and includes Co Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- FPVKHBSQESCIEP-JQCXWYLXSA-N pentostatin Chemical compound C1[C@H](O)[C@@H](CO)O[C@H]1N1C(N=CNC[C@H]2O)=C2N=C1 FPVKHBSQESCIEP-JQCXWYLXSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
- G11B5/70678—Ferrites
Landscapes
- Compounds Of Iron (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56139663A JPS5842203A (ja) | 1981-09-07 | 1981-09-07 | 高密度磁気記録用磁性粉の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56139663A JPS5842203A (ja) | 1981-09-07 | 1981-09-07 | 高密度磁気記録用磁性粉の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5842203A JPS5842203A (ja) | 1983-03-11 |
| JPH0312442B2 true JPH0312442B2 (enrdf_load_stackoverflow) | 1991-02-20 |
Family
ID=15250514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56139663A Granted JPS5842203A (ja) | 1981-09-07 | 1981-09-07 | 高密度磁気記録用磁性粉の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5842203A (enrdf_load_stackoverflow) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59151340A (ja) * | 1983-02-16 | 1984-08-29 | Fuji Photo Film Co Ltd | 磁気記録用フエライト磁性粉の製造法 |
| JPS59207605A (ja) * | 1983-05-11 | 1984-11-24 | Tohoku Metal Ind Ltd | 磁気記録用粉末の製造方法 |
| JPS6065728A (ja) * | 1983-09-19 | 1985-04-15 | Toshiba Corp | 磁性粉の製造方法 |
| JPS6077129A (ja) * | 1983-09-30 | 1985-05-01 | Toshiba Corp | バリウムフエライト磁性粉 |
| JPS62216920A (ja) * | 1986-03-14 | 1987-09-24 | Dowa Mining Co Ltd | マグネトプランバイト型フエライト粉末およびその製造方法 |
| JP4675581B2 (ja) * | 2004-05-31 | 2011-04-27 | Ａｇｃテクノグラス株式会社 | 六方晶フェライト磁性粉末の製造方法 |
| JP4530733B2 (ja) | 2004-06-21 | 2010-08-25 | 富士フイルム株式会社 | 六方晶フェライト磁性粉末、その製造方法および磁気記録媒体 |
-
1981
- 1981-09-07 JP JP56139663A patent/JPS5842203A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5842203A (ja) | 1983-03-11 |