JPH0332138B2 - - Google Patents
Info
- Publication number
- JPH0332138B2 JPH0332138B2 JP3507888A JP3507888A JPH0332138B2 JP H0332138 B2 JPH0332138 B2 JP H0332138B2 JP 3507888 A JP3507888 A JP 3507888A JP 3507888 A JP3507888 A JP 3507888A JP H0332138 B2 JPH0332138 B2 JP H0332138B2
- Authority
- JP
- Japan
- Prior art keywords
- tape
- orientation
- particles
- magnetic
- iron
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 19
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 238000010335 hydrothermal treatment Methods 0.000 claims description 8
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- 239000007858 starting material Substances 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 3
- 239000011230 binding agent Substances 0.000 claims 1
- 239000007800 oxidant agent Substances 0.000 claims 1
- 230000035484 reaction time Effects 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 description 40
- 230000000052 comparative effect Effects 0.000 description 14
- 229910052598 goethite Inorganic materials 0.000 description 11
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 11
- 239000004115 Sodium Silicate Substances 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 9
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 9
- 229910052911 sodium silicate Inorganic materials 0.000 description 9
- 239000006247 magnetic powder Substances 0.000 description 8
- 230000004907 flux Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000006249 magnetic particle Substances 0.000 description 6
- 230000004927 fusion Effects 0.000 description 5
- 239000012452 mother liquor Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 101000860173 Myxococcus xanthus C-factor Proteins 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229960004887 ferric hydroxide Drugs 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 1
- LDHBWEYLDHLIBQ-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide;hydrate Chemical compound O.[OH-].[O-2].[Fe+3] LDHBWEYLDHLIBQ-UHFFFAOYSA-M 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910000702 sendust Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- -1 αFeOOH (goethite)) Chemical compound 0.000 description 1
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3507888A JPH01294221A (ja) | 1988-02-19 | 1988-02-19 | 磁気記録媒体の製造法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3507888A JPH01294221A (ja) | 1988-02-19 | 1988-02-19 | 磁気記録媒体の製造法 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15291479A Division JPS5677931A (en) | 1979-11-28 | 1979-11-28 | Magnetic recording medium and its producton |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01294221A JPH01294221A (ja) | 1989-11-28 |
| JPH0332138B2 true JPH0332138B2 (enrdf_load_stackoverflow) | 1991-05-10 |
Family
ID=12431953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3507888A Granted JPH01294221A (ja) | 1988-02-19 | 1988-02-19 | 磁気記録媒体の製造法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01294221A (enrdf_load_stackoverflow) |
-
1988
- 1988-02-19 JP JP3507888A patent/JPH01294221A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01294221A (ja) | 1989-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4400432A (en) | Coating iron oxide particles for magnetic recording | |
| US4050962A (en) | Manufacture of ferromagnetic, acicular metallic iron particles by hydrogen reduction | |
| KR920008415B1 (ko) | 자기 기록 매체 | |
| US4259368A (en) | Manufacture of acicular magnetic iron oxide | |
| JPH0345447B2 (enrdf_load_stackoverflow) | ||
| US4064292A (en) | Manufacture of cobalt-modified γ-iron(III)oxides | |
| US4923519A (en) | Magnetic iron oxide pigments and a process for their preparation | |
| EP0090052B1 (en) | Magnetic recording medium | |
| US5766763A (en) | Hexagonal system ferrite powder for a high density magnetic recording medium | |
| JPS6242337B2 (enrdf_load_stackoverflow) | ||
| KR890001971B1 (ko) | 코발트함유 자성산화철 분말의 제조방법 | |
| JPH0332138B2 (enrdf_load_stackoverflow) | ||
| GB1589355A (en) | Acicular cobalt magnetic iron oxide and its manufacture | |
| GB2054411A (en) | Magnetic recording medium | |
| JPH0633116A (ja) | 磁気記録媒体用強磁性金属粉末及びその製造方法 | |
| JPH0644527B2 (ja) | 磁気記録媒体 | |
| JP3429881B2 (ja) | 複合型六方晶系フェライト磁性粉及びその製造方法 | |
| JPH0283219A (ja) | コバルト含有強磁性酸化鉄粉末の製造方法 | |
| JPH1025115A (ja) | 酸化鉄系磁性粉末及びこれを用いた磁気記録媒体 | |
| JPS62158801A (ja) | 紡錘形状を呈した鉄を主成分とする金属磁性粒子粉末及びその製造法 | |
| JPS63162534A (ja) | 回転楕円形を呈したヘマタイト粒子粉末の製造法 | |
| JPH0470687B2 (enrdf_load_stackoverflow) | ||
| EP0583621A1 (en) | Process for producing acicular gamma iron (III) oxyhydroxide particles | |
| JPS6136684B2 (enrdf_load_stackoverflow) | ||
| EP0299332A2 (en) | Process for preparing ferromagnetic fine particles for magnetic recording |