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US 8,298,352 B2Granted
Method for the production of magnet cores, magnet core and inductive component with a magnet core
AssigneeVacuumschmelze GmbH & Co. KG
InventorMarkus Brunner
Life of this patent
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Abstract
A magnet core (1) made of a composite of platelet-shaped particles of a thickness D and a binder has a particularly linear relative permeability curve over a pre-magnetised constant field. For this purpose, the platelet-shaped particles (5) are provided with an amorphous volume matrix (8), wherein areas (9) with a crystalline structure having a thickness d of 0.04*D≦d≦0.25*D and covering a proportion x of x≧0.1 of the surface (6, 7) of the particle (5) are embedded on the surface (6, 7) of the particle (5).
Claims15
A magnet core comprising a composite of:
- (a) platelet-shaped particles of a magnetic alloy, each comprising an amorphous volume matrix and two opposing main surfaces which are separated by a thickness D, wherein extending into the amorphous volume matrix from at least one of the surfaces are embedded areas having a crystalline structure, which embedded areas extend into the amorphous volume matrix a thickness d, such that 0.04*D≦d≦0.25*D and which embedded areas cover a proportion x of the surface of the platelet-shaped particles such that x≧0.1;
- and
- (b) a binder.
Dependencies are inferred from the claim text.