DE69009800T2 - Verfahren zur Herstellung von ferromagnetischem Pulver aus Seltenerd-Übergangsmetall-Bor durch Niederschlag. - Google Patents
Verfahren zur Herstellung von ferromagnetischem Pulver aus Seltenerd-Übergangsmetall-Bor durch Niederschlag.Info
- Publication number
- DE69009800T2 DE69009800T2 DE69009800T DE69009800T DE69009800T2 DE 69009800 T2 DE69009800 T2 DE 69009800T2 DE 69009800 T DE69009800 T DE 69009800T DE 69009800 T DE69009800 T DE 69009800T DE 69009800 T2 DE69009800 T2 DE 69009800T2
- Authority
- DE
- Germany
- Prior art keywords
- precipitation
- transition metal
- rare earth
- ferromagnetic powder
- earth transition
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0573—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes obtained by reduction or by hydrogen decrepitation or embrittlement
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Hard Magnetic Materials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1054497A JPH0327502A (ja) | 1989-03-07 | 1989-03-07 | 希土類磁石微粉末の作製法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69009800D1 DE69009800D1 (de) | 1994-07-21 |
DE69009800T2 true DE69009800T2 (de) | 1994-10-06 |
Family
ID=12972272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69009800T Expired - Fee Related DE69009800T2 (de) | 1989-03-07 | 1990-03-07 | Verfahren zur Herstellung von ferromagnetischem Pulver aus Seltenerd-Übergangsmetall-Bor durch Niederschlag. |
Country Status (4)
Country | Link |
---|---|
US (1) | US5062888A (de) |
EP (1) | EP0386747B1 (de) |
JP (1) | JPH0327502A (de) |
DE (1) | DE69009800T2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07272913A (ja) * | 1994-03-30 | 1995-10-20 | Kawasaki Teitoku Kk | 永久磁石原料、その製造法及び永久磁石 |
CN1044648C (zh) * | 1997-05-22 | 1999-08-11 | 南开大学 | 共沉淀还原扩散法制备钕铁硼永磁合金 |
JP3634730B2 (ja) * | 2000-09-18 | 2005-03-30 | 三洋電機株式会社 | 色調補正回路および色相補正回路 |
WO2003088280A1 (en) * | 2002-04-08 | 2003-10-23 | Council Of Scientific And Industrial Research | Process for the production of neodymium-iron-boron permanent magnet alloy powder |
US7048809B2 (en) * | 2003-01-21 | 2006-05-23 | Metglas, Inc. | Magnetic implement having a linear BH loop |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3663318A (en) * | 1970-10-05 | 1972-05-16 | Du Pont | Process for making ferromagnetic metal powders |
JPS5269807A (en) * | 1975-12-08 | 1977-06-10 | Tdk Corp | Recovering of powder of ferromagnetic metal or alloy |
US4394160A (en) * | 1979-12-03 | 1983-07-19 | Sperry Corporation | Making magnetic powders |
US4715890A (en) * | 1986-10-17 | 1987-12-29 | Ovonic Synthetic Materials Company, Inc. | Method of preparing a magnetic material |
ES2009404A6 (es) * | 1988-11-24 | 1989-09-16 | Quintela Manuel Arturo Lopez | Procedimiento para a obtencion de particulas magneticas ultrafinas de nd-fe-b de diferentes tamanos. |
-
1989
- 1989-03-07 JP JP1054497A patent/JPH0327502A/ja active Pending
-
1990
- 1990-03-07 EP EP90104378A patent/EP0386747B1/de not_active Expired - Lifetime
- 1990-03-07 DE DE69009800T patent/DE69009800T2/de not_active Expired - Fee Related
- 1990-03-07 US US07/489,699 patent/US5062888A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0386747A3 (de) | 1991-09-04 |
US5062888A (en) | 1991-11-05 |
DE69009800D1 (de) | 1994-07-21 |
JPH0327502A (ja) | 1991-02-05 |
EP0386747A2 (de) | 1990-09-12 |
EP0386747B1 (de) | 1994-06-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |