JPS6242858B2 - - Google Patents
Info
- Publication number
- JPS6242858B2 JPS6242858B2 JP53129865A JP12986578A JPS6242858B2 JP S6242858 B2 JPS6242858 B2 JP S6242858B2 JP 53129865 A JP53129865 A JP 53129865A JP 12986578 A JP12986578 A JP 12986578A JP S6242858 B2 JPS6242858 B2 JP S6242858B2
- Authority
- JP
- Japan
- Prior art keywords
- cobalt
- magnetic powder
- iron oxide
- salt
- powder
- 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
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 84
- 239000006247 magnetic powder Substances 0.000 claims description 49
- 239000010941 cobalt Substances 0.000 claims description 40
- 229910017052 cobalt Inorganic materials 0.000 claims description 40
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 40
- 150000001868 cobalt Chemical class 0.000 claims description 23
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 14
- 239000003513 alkali Substances 0.000 claims description 11
- 229910001566 austenite Inorganic materials 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 230000005291 magnetic effect Effects 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 8
- 239000007858 starting material Substances 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 229940044175 cobalt sulfate Drugs 0.000 description 2
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 2
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000003891 ferrous sulphate Nutrition 0.000 description 2
- 239000011790 ferrous sulphate Substances 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12986578A JPS5556019A (en) | 1978-10-20 | 1978-10-20 | Production of ferromagnetic powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12986578A JPS5556019A (en) | 1978-10-20 | 1978-10-20 | Production of ferromagnetic powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5556019A JPS5556019A (en) | 1980-04-24 |
| JPS6242858B2 true JPS6242858B2 (fr) | 1987-09-10 |
Family
ID=15020184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12986578A Granted JPS5556019A (en) | 1978-10-20 | 1978-10-20 | Production of ferromagnetic powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5556019A (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029646B2 (ja) * | 1981-01-20 | 1985-07-11 | 堺化学工業株式会社 | 磁性酸化鉄粉末の製造方法 |
| JPS5888122A (ja) * | 1981-11-20 | 1983-05-26 | Ishihara Sangyo Kaisha Ltd | コバルト含有強磁性酸化鉄の製造方法 |
| JPS5832027A (ja) * | 1981-07-28 | 1983-02-24 | Ishihara Sangyo Kaisha Ltd | コバルト含有酸化鉄強磁性粉末の製造方法 |
| JPS6081026A (ja) * | 1983-10-06 | 1985-05-09 | Ishihara Sangyo Kaisha Ltd | コバルト含有磁性酸化鉄の製造方法 |
| JPH01194306A (ja) * | 1988-01-29 | 1989-08-04 | Sony Corp | コバルト含有酸化鉄磁性粉末の製造方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4974399A (fr) * | 1972-11-24 | 1974-07-18 | ||
| JPS5037667A (fr) * | 1973-08-07 | 1975-04-08 | ||
| JPS5037668A (fr) * | 1973-08-07 | 1975-04-08 | ||
| JPS53129895A (en) * | 1977-04-20 | 1978-11-13 | Hitachi Maxell | Method of manufacturing ferromagnetic powder for magnetic recording |
| JPS5556605A (en) * | 1978-10-20 | 1980-04-25 | Hitachi Maxell Ltd | Magnetic recording medium |
-
1978
- 1978-10-20 JP JP12986578A patent/JPS5556019A/ja active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4974399A (fr) * | 1972-11-24 | 1974-07-18 | ||
| JPS5037667A (fr) * | 1973-08-07 | 1975-04-08 | ||
| JPS5037668A (fr) * | 1973-08-07 | 1975-04-08 | ||
| JPS53129895A (en) * | 1977-04-20 | 1978-11-13 | Hitachi Maxell | Method of manufacturing ferromagnetic powder for magnetic recording |
| JPS5556605A (en) * | 1978-10-20 | 1980-04-25 | Hitachi Maxell Ltd | Magnetic recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5556019A (en) | 1980-04-24 |
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