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US 9,242,295 B2Granted
Bulk nanocomposite magnets and methods of making bulk nanocomposite magnets
AssigneeThe Univeristy of Texas At Arlington
InventorJ. Ping Liu
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Abstract
The present invention relates to bulk magnetic nanocomposites and methods of making bulk magnetic nanocomposites.
Claims27
A method of making a bulk magnetic nanocomposite comprising:
- a) providing a first powder comprising at least one hard magnetic component having an anisotropic field greater than or equal to about 5000 Oe;
- b) providing a second powder comprising at least one soft magnetic component having an anisotropic field less than or equal to about 1000 Oe;
- c) combining said first and second powders to form a mixture;
- d) processing said mixture by plastically deforming said mixture to form a processed mixture having at least a one thousand time size reduction of soft magnetic component inclusions;
- and
- e) warm compacting said processed mixture to form a bulk magnetic nanocomposite, comprising:
- a matrix comprising said at least one hard magnetic component;
- and
- a plurality of particles comprising said at least one soft magnetic component;
- wherein said plurality of particles of said soft magnetic component are no larger than about 20 nm in at least one dimension and the plurality of particles of said soft magnetic component are homogenously distributed in the matrix.
7 more elements
A method of making a bulk magnetic nanocomposite comprising:
- a) providing a first powder comprising at least one first hard magnetic component, wherein the first hard magnetic component is a brittle material;
- b) providing a second powder comprising at least one second magnetic component, wherein the second magnetic component is a ductile material;
- c) combining said first and second powders to form a mixture;
- d) processing said mixture by plastically deforming said mixture to form a processed mixture having about a one thousand time size reduction of second magnetic component dispersed particles;
- and
- e) warm compacting said processed mixture to form a bulk magnetic nanocomposite, comprising:
- a matrix comprising said at least one hard magnetic component;
- and
- a plurality of particles comprising said at least one second magnetic component;
- wherein said plurality of particles of said second magnetic component are no larger than about 20 nm in at least one dimension and the plurality of particles of said second magnetic component are homogenously distributed in the matrix.
7 more elements
Dependencies are inferred from the claim text.