GB1226456A - - Google Patents
Info
- Publication number
- GB1226456A GB1226456A GB1226456DA GB1226456A GB 1226456 A GB1226456 A GB 1226456A GB 1226456D A GB1226456D A GB 1226456DA GB 1226456 A GB1226456 A GB 1226456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder
- etched
- acid
- etching
- hcl
- 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
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
-
- 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
- H01F1/06—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 in the form of particles, e.g. powder
-
- 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
- H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
- H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- ing And Chemical Polishing (AREA)
- Compounds Of Iron (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6803121A NL6803121A (de) | 1968-03-05 | 1968-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1226456A true GB1226456A (de) | 1971-03-31 |
Family
ID=19802942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1226456D Expired GB1226456A (de) | 1968-03-05 | 1969-02-28 |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT287326B (de) |
BE (1) | BE729302A (de) |
CH (1) | CH532824A (de) |
DE (1) | DE1908943C3 (de) |
FR (1) | FR2003246A1 (de) |
GB (1) | GB1226456A (de) |
NL (1) | NL6803121A (de) |
SE (1) | SE348590B (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2646348C2 (de) * | 1976-10-14 | 1986-08-28 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von nadelförmigen, ferromagnetischen, im wesentlichen aus Eisen bestehenden Metallteilchen und deren Verwendung zur Herstellung von magnetischen Aufzeichnungsträgern |
JPS5941806A (ja) * | 1982-08-31 | 1984-03-08 | Toda Kogyo Corp | 磁気記録用板状Baフエライト粒子粉末の製造法 |
FR2707192B1 (fr) * | 1993-07-08 | 1995-08-11 | Aimants Ugimag Sa | Procédé de préparation de poudres magnétiques de type terres rares-cobalt contenant du fluor et aimants permanents densifiés correspondants. |
DE19511921A1 (de) * | 1995-03-31 | 1996-10-02 | Vacuumschmelze Gmbh | Behandlungsverfahren für Magnete zur optischen Kennzeichnung der magnetischen Vorzugsrichtung |
-
1968
- 1968-03-05 NL NL6803121A patent/NL6803121A/xx unknown
-
1969
- 1969-02-22 DE DE19691908943 patent/DE1908943C3/de not_active Expired
- 1969-02-28 GB GB1226456D patent/GB1226456A/en not_active Expired
- 1969-03-03 CH CH532824D patent/CH532824A/de not_active IP Right Cessation
- 1969-03-03 BE BE729302D patent/BE729302A/xx unknown
- 1969-03-03 AT AT209669A patent/AT287326B/de not_active IP Right Cessation
- 1969-03-03 SE SE287069A patent/SE348590B/xx unknown
- 1969-03-04 FR FR6905882A patent/FR2003246A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE1908943A1 (de) | 1969-09-25 |
BE729302A (de) | 1969-09-03 |
FR2003246A1 (de) | 1969-11-07 |
DE1908943B2 (de) | 1979-08-16 |
AT287326B (de) | 1971-01-25 |
DE1908943C3 (de) | 1980-05-08 |
CH532824A (de) | 1973-02-28 |
SE348590B (de) | 1972-09-04 |
NL6803121A (de) | 1969-09-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |