Soft magnetic alloy, method for making, and magnetic core
AssigneeTDK Corporation
InventorsMasao Shigeta, Asako Kajita
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Abstract
Soft magnetic alloy comprising Fe, a vitrifying element (Si and B), and Cu, and containing a crystalline phase shows a low magnetic permeability of up to 3,000 at 100 kHz. Magnetic cores formed therefrom have low permeability, a wide unsaturation region, and iso.permeability without forming a gap and find application in choke coils and transformers.
Claims17
A soft magnetic alloy containing 0.1 to 100% of a crystalline phase and having a magnetic permeability of up to 3000 at 100 kHz consisting of iron, boron, copper, a total of from 0 to 0.008 atom % of at least one element selected from the group consisting of Ti, Zr, Hf, Nb, Ta, Mo and W, a total of from 0 to 3 atom % of at least one element selected from the group consisting of Mn, V and Cr, and, optionally, one or more elements selected from the group consisting of Si, C, Ge, P, Ga, Sb, In, Be and As.
The soft magnetic alloy of claim1 having a permeability of up to 1,000 at 100 kHz.
Dependencies are inferred from the claim text.