Soft magnetic material powder and manufacturing method thereof, and magnetic core and manufacturing method thereof
AssigneeMurata Manufacturing Co., Ltd.
InventorYuya Ishida
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Abstract
A soft magnetic material powder includes soft magnetic material particles, the soft magnetic material particles each include a core formed from an Fe-based soft magnetic material and an insulating film covering the surface of the core, and the insulating film contains an inorganic oxide and a water soluble polymer. A magnetic core includes soft magnetic material particles and a binder bonding the soft magnetic material particles to each other, the soft magnetic material particles each include a core containing an Fe-based soft magnetic material and an insulating film covering the surface of the core, and the insulating film contains an inorganic oxide and a water soluble polymer.
Claims12
A soft magnetic material powder comprising:
- soft magnetic material particles,
- wherein the soft magnetic material particles each include:
- a core containing an Fe-based soft magnetic material;
- an insulating film covers the surface of the core,
- the insulating film contains an inorganic oxide and a water soluble polymer, and
- the inorganic oxide and water soluble polymer are formed in the same film layer.
A magnetic core comprising:
- soft magnetic material particles;
- and
- a binder which bonds the soft magnetic material particles to each other,
- wherein the soft magnetic material particles each include:
- a core containing an Fe-based soft magnetic material;
- an insulating film covers the surface of the core,
- the insulating film contains an inorganic oxide and a water soluble polymer, and
- the inorganic oxide and water soluble polymer are formed in the same film layer.
A magnetic core comprising:
- soft magnetic material particles;
- and
- a binder which bonds the soft magnetic material particles to each other,
- wherein the soft magnetic material particles each include:
- a core formed from an Fe-based soft magnetic material;
- and
- a Si-containing insulating film covering the surface of the core,
- the Fe-based soft magnetic material includes Fe and Cr, and
- the insulating film contains an inorganic oxide in which the amount of Si is larger than that of Cr.
Dependencies are inferred from the claim text.