GB1261497A - Method of increasing the coercive force field strength of pulverizer rare earth-cobalt alloys - Google Patents
Method of increasing the coercive force field strength of pulverizer rare earth-cobalt alloysInfo
- Publication number
- GB1261497A GB1261497A GB38070/70A GB3807070A GB1261497A GB 1261497 A GB1261497 A GB 1261497A GB 38070/70 A GB38070/70 A GB 38070/70A GB 3807070 A GB3807070 A GB 3807070A GB 1261497 A GB1261497 A GB 1261497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rare earth
- coercive force
- field strength
- force field
- cobalt alloys
- 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
- 229910000531 Co alloy Inorganic materials 0.000 title abstract 2
- 239000011248 coating agent Substances 0.000 abstract 3
- 238000000576 coating method Methods 0.000 abstract 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- 229910052684 Cerium Inorganic materials 0.000 abstract 1
- 229910052692 Dysprosium Inorganic materials 0.000 abstract 1
- 229910052691 Erbium Inorganic materials 0.000 abstract 1
- 229910052693 Europium Inorganic materials 0.000 abstract 1
- 229910052688 Gadolinium Inorganic materials 0.000 abstract 1
- 229910052689 Holmium Inorganic materials 0.000 abstract 1
- 229910052765 Lutetium Inorganic materials 0.000 abstract 1
- 229910052779 Neodymium Inorganic materials 0.000 abstract 1
- 229910052777 Praseodymium Inorganic materials 0.000 abstract 1
- 229910052772 Samarium Inorganic materials 0.000 abstract 1
- 229910001128 Sn alloy Inorganic materials 0.000 abstract 1
- 229910052771 Terbium Inorganic materials 0.000 abstract 1
- 229910052775 Thulium Inorganic materials 0.000 abstract 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 abstract 1
- 229910052769 Ytterbium Inorganic materials 0.000 abstract 1
- 238000005056 compaction Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052746 lanthanum Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 239000012266 salt solution Substances 0.000 abstract 1
- 229910052706 scandium Inorganic materials 0.000 abstract 1
- 229910052727 yttrium Inorganic materials 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
- 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
- H01F1/0551—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0552—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes with a protective layer
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/17—Metallic particles coated with metal
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
1,261,497. Magnetic structures. TH. GOLDSCHMIDT A.G. 6 Aug., 1970 [8 Aug., 1969],No. 38070/70. Heading H1H. [Also in Division C7] The coercive force field strength of pulverized rare earth-cobalt alloys is increased by coating them with tin. The rare earth may be Y, Sc, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu. The Co may be mixed with Mn, Fe or Ni. The particles may be heated after coating, e.g. at 150 to 500 C. The coating may be effected by mixing the particles with a Hg-Sn alloy and heating in a vacuum above 200 C. or by using a tin salt solution with or without an external current. The powder may be compacted in an axial magnetic field which is turned on and off before, and left on during compaction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691940464 DE1940464C (en) | 1969-08-08 | Process for increasing the coercive field strength of finely dispersed rare earth cobalt alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1261497A true GB1261497A (en) | 1972-01-26 |
Family
ID=5742312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB38070/70A Expired GB1261497A (en) | 1969-08-08 | 1970-08-06 | Method of increasing the coercive force field strength of pulverizer rare earth-cobalt alloys |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS4815124B1 (en) |
| BE (1) | BE752245A (en) |
| CH (1) | CH548810A (en) |
| FR (1) | FR2056705A5 (en) |
| GB (1) | GB1261497A (en) |
| NL (1) | NL7011766A (en) |
-
1970
- 1970-06-03 CH CH828870A patent/CH548810A/en not_active IP Right Cessation
- 1970-06-19 BE BE752245D patent/BE752245A/en unknown
- 1970-08-06 GB GB38070/70A patent/GB1261497A/en not_active Expired
- 1970-08-07 FR FR7029181A patent/FR2056705A5/fr not_active Expired
- 1970-08-07 JP JP45069195A patent/JPS4815124B1/ja active Pending
- 1970-08-10 NL NL7011766A patent/NL7011766A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL7011766A (en) | 1971-02-10 |
| FR2056705A5 (en) | 1971-05-14 |
| BE752245A (en) | 1970-12-01 |
| DE1940464A1 (en) | 1971-02-11 |
| DE1940464B2 (en) | 1971-07-29 |
| JPS4815124B1 (en) | 1973-05-12 |
| CH548810A (en) | 1974-05-15 |
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