GB903586A - Improvements in or relating to permanent magnets - Google Patents
Improvements in or relating to permanent magnetsInfo
- Publication number
- GB903586A GB903586A GB3392659A GB3392659A GB903586A GB 903586 A GB903586 A GB 903586A GB 3392659 A GB3392659 A GB 3392659A GB 3392659 A GB3392659 A GB 3392659A GB 903586 A GB903586 A GB 903586A
- Authority
- GB
- United Kingdom
- Prior art keywords
- range
- alloy
- relating
- hours
- permanent magnets
- 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
Links
- 239000000956 alloy Substances 0.000 abstract 3
- 229910045601 alloy Inorganic materials 0.000 abstract 3
- 230000005415 magnetization Effects 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000004663 powder metallurgy Methods 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Abstract
A permanent magnet alloy contains in percentage by weight: .Ni.11.75 - 12.5 .Al.8.0 - 8.5 .Co.22.75 - 23.75 .Cu.2.75 - 3.25 .Nb.0.20 - 0.35 .Si.0.20 - 0.35 .S.0.05 - 0.35 .Fe.balance The alloy is cooled in a magnetic field at a rate of 0.25 DEG C to 1 DEG C. per second from the range 930-950 DEG C. to below 625 DEG C., and is then aged in the range 625-550 DEG C., preferably first in the range 625-580 DEG C. for at least 8 hours, and then in the range 580-550 DEG C. for at least 10 hours, followed by final magnetization. The alloy may be prepared by melting or by powder metallurgy methods; magnetization may be carried out during cooling in the mould or from the sintering temperature, or the magnets may be reheated to 930-950 DEG C. Specifications 634,686, 634,700, 652,022 and 661,727 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3392659A GB903586A (en) | 1959-10-07 | 1959-10-07 | Improvements in or relating to permanent magnets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3392659A GB903586A (en) | 1959-10-07 | 1959-10-07 | Improvements in or relating to permanent magnets |
Publications (1)
Publication Number | Publication Date |
---|---|
GB903586A true GB903586A (en) | 1962-08-15 |
Family
ID=10359201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3392659A Expired GB903586A (en) | 1959-10-07 | 1959-10-07 | Improvements in or relating to permanent magnets |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB903586A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1247028B (en) * | 1964-01-23 | 1967-08-10 | Swift Levick & Sons Ltd | Permanent magnet alloy |
GB2131047A (en) * | 1982-11-29 | 1984-06-13 | Kanto Denka Kogyo Kk | Ferromagnetic metallic powders useful for magnetic recording and processes for producing said metallic powders |
CN114855056A (en) * | 2022-04-11 | 2022-08-05 | 杭州永磁集团有限公司 | Preparation method of heterojunction sintering alnico doped with cast alnico |
-
1959
- 1959-10-07 GB GB3392659A patent/GB903586A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1247028B (en) * | 1964-01-23 | 1967-08-10 | Swift Levick & Sons Ltd | Permanent magnet alloy |
GB2131047A (en) * | 1982-11-29 | 1984-06-13 | Kanto Denka Kogyo Kk | Ferromagnetic metallic powders useful for magnetic recording and processes for producing said metallic powders |
CN114855056A (en) * | 2022-04-11 | 2022-08-05 | 杭州永磁集团有限公司 | Preparation method of heterojunction sintering alnico doped with cast alnico |
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