JPH025690B2 - - Google Patents
Info
- Publication number
- JPH025690B2 JPH025690B2 JP56097547A JP9754781A JPH025690B2 JP H025690 B2 JPH025690 B2 JP H025690B2 JP 56097547 A JP56097547 A JP 56097547A JP 9754781 A JP9754781 A JP 9754781A JP H025690 B2 JPH025690 B2 JP H025690B2
- Authority
- JP
- Japan
- Prior art keywords
- coprecipitate
- powder
- magnetic recording
- washing
- aqueous solution
- 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
- 239000000843 powder Substances 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 14
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 150000002500 ions Chemical class 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000010257 thawing Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 6
- 229910052788 barium Inorganic materials 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 230000008014 freezing Effects 0.000 claims description 5
- 238000007710 freezing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000006247 magnetic powder Substances 0.000 claims description 5
- 229910052712 strontium Inorganic materials 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 description 11
- 229910000859 α-Fe Inorganic materials 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 230000005415 magnetization Effects 0.000 description 8
- 238000005054 agglomeration Methods 0.000 description 6
- 230000002776 aggregation Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000003513 alkali Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56097547A JPS582223A (ja) | 1981-06-25 | 1981-06-25 | 磁気記録用磁性粉末の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56097547A JPS582223A (ja) | 1981-06-25 | 1981-06-25 | 磁気記録用磁性粉末の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS582223A JPS582223A (ja) | 1983-01-07 |
| JPH025690B2 true JPH025690B2 (enrdf_load_stackoverflow) | 1990-02-05 |
Family
ID=14195260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56097547A Granted JPS582223A (ja) | 1981-06-25 | 1981-06-25 | 磁気記録用磁性粉末の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS582223A (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781852A (en) * | 1986-10-24 | 1988-11-01 | Olin Corporation | Process for making selected doped barium and strontium hexaferrite particles |
-
1981
- 1981-06-25 JP JP56097547A patent/JPS582223A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS582223A (ja) | 1983-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6311763B2 (enrdf_load_stackoverflow) | ||
| JPH033361B2 (enrdf_load_stackoverflow) | ||
| JPS6242337B2 (enrdf_load_stackoverflow) | ||
| JPS60255628A (ja) | 磁気記録用板状Ｂａフエライト微粒子粉末及びその製造法 | |
| JPS6249963B2 (enrdf_load_stackoverflow) | ||
| JP2607456B2 (ja) | 磁気記録用磁性粉及びその製造方法 | |
| JPS5856232A (ja) | 磁気記録媒体 | |
| JPH025690B2 (enrdf_load_stackoverflow) | ||
| JPH07172839A (ja) | 六方晶系Ｂａフェライト磁性粉の製造方法 | |
| JPH0359007B2 (enrdf_load_stackoverflow) | ||
| JPH0633116A (ja) | 磁気記録媒体用強磁性金属粉末及びその製造方法 | |
| JPS5841728A (ja) | 微細なフエライト粉末の製造方法 | |
| JPS6135135B2 (enrdf_load_stackoverflow) | ||
| JPH0469091B2 (enrdf_load_stackoverflow) | ||
| JP2547000B2 (ja) | 磁気記録用強磁性微粉末 | |
| JPS61141625A (ja) | バリウムフエライト粉末の製造法 | |
| JPH0471012B2 (enrdf_load_stackoverflow) | ||
| JPS5860624A (ja) | 強磁性粉末およびその製造方法 | |
| JPH044253B2 (enrdf_load_stackoverflow) | ||
| JP2651795B2 (ja) | 磁気記録用強磁性微粉末の製造方法 | |
| JPS6257577B2 (enrdf_load_stackoverflow) | ||
| JPS63225534A (ja) | 六角板状バリウムフエライトの製造方法 | |
| JPS5814508A (ja) | 高密度記録用磁性粉の製造方法 | |
| JPH0753581B2 (ja) | 強磁性マグネタイト超微粒子の製造方法 | |
| JPS60161343A (ja) | 六方晶系フエライト磁性粉末の製造方法 |