JPS6039136A - 径方向異方性円筒状永久磁石の製造方法 - Google Patents
径方向異方性円筒状永久磁石の製造方法Info
- Publication number
- JPS6039136A JPS6039136A JP58145094A JP14509483A JPS6039136A JP S6039136 A JPS6039136 A JP S6039136A JP 58145094 A JP58145094 A JP 58145094A JP 14509483 A JP14509483 A JP 14509483A JP S6039136 A JPS6039136 A JP S6039136A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- cavity
- particles
- ferrite
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000002245 particle Substances 0.000 claims abstract description 24
- 238000005245 sintering Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000003112 inhibitor Substances 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims abstract 6
- 238000000748 compression moulding Methods 0.000 claims abstract 2
- 239000000843 powder Substances 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 6
- 239000006249 magnetic particle Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 18
- 238000002425 crystallisation Methods 0.000 abstract description 5
- 230000008025 crystallization Effects 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910000424 chromium(II) oxide Inorganic materials 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 3
- 230000008094 contradictory effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
Landscapes
- Magnetic Ceramics (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58145094A JPS6039136A (ja) | 1983-08-10 | 1983-08-10 | 径方向異方性円筒状永久磁石の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58145094A JPS6039136A (ja) | 1983-08-10 | 1983-08-10 | 径方向異方性円筒状永久磁石の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6039136A true JPS6039136A (ja) | 1985-02-28 |
| JPS6351991B2 JPS6351991B2 (enrdf_load_stackoverflow) | 1988-10-17 |
Family
ID=15377232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58145094A Granted JPS6039136A (ja) | 1983-08-10 | 1983-08-10 | 径方向異方性円筒状永久磁石の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039136A (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009041606A1 (ja) * | 2007-09-28 | 2009-04-02 | Dowa Electronics Materials Co., Ltd. | ボンド磁石用フェライト粉末およびその製造方法、並びに、これを用いたボンド磁石 |
| JP2009238795A (ja) * | 2008-03-26 | 2009-10-15 | Dowa Electronics Materials Co Ltd | ボンド磁石用フェライト粉末およびその製造方法 |
-
1983
- 1983-08-10 JP JP58145094A patent/JPS6039136A/ja active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009041606A1 (ja) * | 2007-09-28 | 2009-04-02 | Dowa Electronics Materials Co., Ltd. | ボンド磁石用フェライト粉末およびその製造方法、並びに、これを用いたボンド磁石 |
| JP2009099969A (ja) * | 2007-09-28 | 2009-05-07 | Dowa Electronics Materials Co Ltd | ボンド磁石用フェライト粉末およびその製造方法、並びに、これを用いたボンド磁石 |
| US8337714B2 (en) | 2007-09-28 | 2012-12-25 | Dowa Electronics Materials Co., Ltd. | Ferrite powders for bonded magnet, process for the production of the powders, and bonded magnet made by using the same |
| JP2009238795A (ja) * | 2008-03-26 | 2009-10-15 | Dowa Electronics Materials Co Ltd | ボンド磁石用フェライト粉末およびその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6351991B2 (enrdf_load_stackoverflow) | 1988-10-17 |