JPH0416924B2 - - Google Patents
Info
- Publication number
- JPH0416924B2 JPH0416924B2 JP59027849A JP2784984A JPH0416924B2 JP H0416924 B2 JPH0416924 B2 JP H0416924B2 JP 59027849 A JP59027849 A JP 59027849A JP 2784984 A JP2784984 A JP 2784984A JP H0416924 B2 JPH0416924 B2 JP H0416924B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- feooh
- magnetic powder
- terms
- spindle
- 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
- 229910001566 austenite Inorganic materials 0.000 claims description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000006247 magnetic powder Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 229910006540 α-FeOOH Inorganic materials 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 238000000151 deposition Methods 0.000 claims description 5
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 229910006299 γ-FeOOH Inorganic materials 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 150000002506 iron compounds Chemical class 0.000 claims 1
- 229910000029 sodium carbonate Inorganic materials 0.000 claims 1
- 239000002245 particle Substances 0.000 description 11
- 229960002089 ferrous chloride Drugs 0.000 description 6
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- 230000000877 morphologic effect Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000010405 reoxidation reaction Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 241000289669 Erinaceus europaeus Species 0.000 description 1
- 229910002588 FeOOH Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- -1 ferrous compound Chemical class 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
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 |
|---|---|---|---|
| JP59027849A JPS60170906A (ja) | 1984-02-16 | 1984-02-16 | Ｃｏ分を含む紡錘状γ−Ｆｅ↓２Ｏ↓３磁性粉及びその製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59027849A JPS60170906A (ja) | 1984-02-16 | 1984-02-16 | Ｃｏ分を含む紡錘状γ−Ｆｅ↓２Ｏ↓３磁性粉及びその製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60170906A JPS60170906A (ja) | 1985-09-04 |
| JPH0416924B2 true JPH0416924B2 (ko) | 1992-03-25 |
Family
ID=12232361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59027849A Granted JPS60170906A (ja) | 1984-02-16 | 1984-02-16 | Ｃｏ分を含む紡錘状γ−Ｆｅ↓２Ｏ↓３磁性粉及びその製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60170906A (ko) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6117425A (ja) * | 1984-06-30 | 1986-01-25 | Toda Kogyo Corp | 紡錘型を呈した磁性酸化鉄粒子粉末及びその製造法 |
| DE69418472D1 (de) * | 1993-11-01 | 1999-06-17 | Minnesota Mining & Mfg | Verfahren zur herstellung von goethit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626729A (en) * | 1979-08-11 | 1981-03-14 | Tdk Corp | Powdered magnetic material for magnetic recording medium |
-
1984
- 1984-02-16 JP JP59027849A patent/JPS60170906A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626729A (en) * | 1979-08-11 | 1981-03-14 | Tdk Corp | Powdered magnetic material for magnetic recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60170906A (ja) | 1985-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4729846A (en) | Method for manufacturing lepidocrocite | |
| US4267207A (en) | Process for producing cobalt-containing ferromagnetic iron oxide powder | |
| JPS61174304A (ja) | 鉄から本質的になる強磁性金属顔料の製造方法 | |
| US4447264A (en) | Production of magnetic powder | |
| US5582914A (en) | Magnetic iron oxide particles and method of producing the same | |
| US4920010A (en) | Ferromagnetic metal powder | |
| US4456475A (en) | Process for preparing ferromagnetic particles comprising metallic iron | |
| US4594267A (en) | Process for producing cobalt-containing magnetic iron oxide powder | |
| US4457955A (en) | Process for producing magnetizable particles | |
| JPH0416924B2 (ko) | ||
| CA1132008A (en) | Metallic iron particles for magnetic recording produced by reducing an iron oxide precursor coated with an antimony compound | |
| JPH10226520A (ja) | 水和酸化鉄及び強磁性酸化鉄の製造方法 | |
| JP2744641B2 (ja) | 強磁性金属粉末の製造方法 | |
| US4497654A (en) | Ferromagnetic metallic powders useful for magnetic recording and processes for producing said metallic powders | |
| KR0125939B1 (ko) | 자기 기록용 자기 산화철 입자의 제조방법 | |
| US5989516A (en) | Spindle-shaped geothite particles | |
| JPH0343325B2 (ko) | ||
| JP3011221B2 (ja) | 針状ゲータイト粒子粉末の製造法 | |
| JPS6349722B2 (ko) | ||
| JPH0343324B2 (ko) | ||
| JPH0312125B2 (ko) | ||
| JPH0696921A (ja) | 酸化鉄磁性粒子の製造方法および磁気記録媒体の製造方法 | |
| JPH0553843B2 (ko) | ||
| JPH06122520A (ja) | α−オキシ水酸化鉄の製造方法 | |
| JPH06330111A (ja) | 金属磁性粉末の製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |