JPH0561206B2 - - Google Patents
Info
- Publication number
- JPH0561206B2 JPH0561206B2 JP59138564A JP13856484A JPH0561206B2 JP H0561206 B2 JPH0561206 B2 JP H0561206B2 JP 59138564 A JP59138564 A JP 59138564A JP 13856484 A JP13856484 A JP 13856484A JP H0561206 B2 JPH0561206 B2 JP H0561206B2
- Authority
- JP
- Japan
- Prior art keywords
- coercive force
- cobalt
- magnetic powder
- particles
- added
- 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
- 239000006247 magnetic powder Substances 0.000 claims description 33
- 239000002245 particle Substances 0.000 claims description 26
- 229910001566 austenite Inorganic materials 0.000 claims description 23
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 22
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 16
- 239000010941 cobalt Substances 0.000 claims description 15
- 229910017052 cobalt Inorganic materials 0.000 claims description 15
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 15
- 150000001868 cobalt Chemical class 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims 1
- 238000006297 dehydration reaction Methods 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 description 17
- 230000005291 magnetic effect Effects 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 15
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000011790 ferrous sulphate Substances 0.000 description 4
- 235000003891 ferrous sulphate Nutrition 0.000 description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 150000001869 cobalt compounds Chemical class 0.000 description 3
- 229910001429 cobalt ion Inorganic materials 0.000 description 3
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910021503 Cobalt(II) hydroxide Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229940044175 cobalt sulfate Drugs 0.000 description 1
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- BZRRQSJJPUGBAA-UHFFFAOYSA-L cobalt(ii) bromide Chemical compound Br[Co]Br BZRRQSJJPUGBAA-UHFFFAOYSA-L 0.000 description 1
- ASKVAEGIVYSGNY-UHFFFAOYSA-L cobalt(ii) hydroxide Chemical compound [OH-].[OH-].[Co+2] ASKVAEGIVYSGNY-UHFFFAOYSA-L 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59138564A JPS6117426A (ja) | 1984-07-04 | 1984-07-04 | コバルト含有酸化鉄磁性粉の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59138564A JPS6117426A (ja) | 1984-07-04 | 1984-07-04 | コバルト含有酸化鉄磁性粉の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6117426A JPS6117426A (ja) | 1986-01-25 |
| JPH0561206B2 true JPH0561206B2 (de) | 1993-09-03 |
Family
ID=15225087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59138564A Granted JPS6117426A (ja) | 1984-07-04 | 1984-07-04 | コバルト含有酸化鉄磁性粉の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6117426A (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2660714B2 (ja) * | 1988-03-15 | 1997-10-08 | 石原産業株式会社 | コバルト含有強磁性酸化鉄粉末の製造方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5123039A (ja) * | 1974-08-21 | 1976-02-24 | Tokyo Shibaura Electric Co | Hyojiseigyohoshiki |
| JPS53100197A (en) * | 1977-02-12 | 1978-09-01 | Basf Ag | Method of making acicular cobaltt containing magnetic iron oxide |
| JPS53129894A (en) * | 1977-04-20 | 1978-11-13 | Hitachi Maxell | Method of manufacturing ferromagnetic powder |
| JPS54106895A (en) * | 1978-02-08 | 1979-08-22 | Fuji Photo Film Co Ltd | Ferromagnetic powder |
| JPS5879824A (ja) * | 1981-10-30 | 1983-05-13 | Hitachi Maxell Ltd | コバルト含有酸化鉄磁性粉の製造法 |
| JPS59107924A (ja) * | 1982-12-08 | 1984-06-22 | Ishihara Sangyo Kaisha Ltd | コバルト含有磁性酸化鉄粉末の製造方法 |
-
1984
- 1984-07-04 JP JP59138564A patent/JPS6117426A/ja active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5123039A (ja) * | 1974-08-21 | 1976-02-24 | Tokyo Shibaura Electric Co | Hyojiseigyohoshiki |
| JPS53100197A (en) * | 1977-02-12 | 1978-09-01 | Basf Ag | Method of making acicular cobaltt containing magnetic iron oxide |
| JPS53129894A (en) * | 1977-04-20 | 1978-11-13 | Hitachi Maxell | Method of manufacturing ferromagnetic powder |
| JPS54106895A (en) * | 1978-02-08 | 1979-08-22 | Fuji Photo Film Co Ltd | Ferromagnetic powder |
| JPS5879824A (ja) * | 1981-10-30 | 1983-05-13 | Hitachi Maxell Ltd | コバルト含有酸化鉄磁性粉の製造法 |
| JPS59107924A (ja) * | 1982-12-08 | 1984-06-22 | Ishihara Sangyo Kaisha Ltd | コバルト含有磁性酸化鉄粉末の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6117426A (ja) | 1986-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6242337B2 (de) | ||
| JPH0561206B2 (de) | ||
| JP3337046B2 (ja) | コバルトと鉄とを主成分とする紡錘状金属磁性粒子粉末及びその製造法 | |
| US4851258A (en) | Method for preparing magnetic particles for magnetic-recording media | |
| US4803132A (en) | Magnetic recording medium | |
| JP2659957B2 (ja) | 磁性粉とその製法およびその磁性粉を用いた磁気記録媒体 | |
| JPS6242858B2 (de) | ||
| JP2001355001A (ja) | 紡錘状ゲータイト粒子粉末、紡錘状ヘマタイト粒子粉末及び鉄を主成分とする紡錘状金属磁性粒子粉末、並びにそれらの製造法 | |
| JPH0732094B2 (ja) | 針状強磁性酸化鉄磁性粉 | |
| JPH06345437A (ja) | γ−酸化鉄磁気粉末の製造方法 | |
| JP2827190B2 (ja) | 磁気記録用針状鉄合金磁性粒子粉末の製造法 | |
| JPS6136684B2 (de) | ||
| JP3129414B2 (ja) | 磁気記録用針状鉄合金磁性粒子粉末の製造法 | |
| JP2583070B2 (ja) | 磁気記録媒体 | |
| JPS6334609B2 (de) | ||
| JPH0257321B2 (de) | ||
| EP0131223B1 (de) | Verfahren zur Herstellung von kobaltmodifiziertem ferromagnetischem Eisenoxyd | |
| JPH0647681B2 (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 | |
| JP2897794B2 (ja) | コバルト被着型磁性酸化鉄粒子粉末の製造法 | |
| JP2885252B2 (ja) | 磁気記録用針状磁性酸化鉄粒子粉末の製造法 | |
| JP2945456B2 (ja) | コバルト含有強磁性酸化鉄粒子粉末の製造法 | |
| JPS60165703A (ja) | 針状強磁性酸化鉄磁性粉 | |
| JP2982859B2 (ja) | 磁性酸化鉄粒子粉末 | |
| JPS5931961B2 (ja) | 強磁性粉末の製造方法 | |
| JP3031383B2 (ja) | コバルト含有強磁性酸化鉄粒子粉末の製造法 |