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US 12,512,705 B2Granted
Alloy composition, alloy powder, alloy ribbon, inductor, and motor
AssigneeKolon Industries, Inc.
InventorsSu Min Kim, Choongnyun Paul Kim
Life of this patent
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Abstract
A soft magnetic core of an inductor or a motor core includes an alloy having a composition of Fe, Si, B, P, Cu, and Y, and the soft magnetic core or the motor core has a composite structure in which crystal grains including Fe are dispersed in an amorphous phase. Also, the alloy is expressed by the compositional formula FeaSibBcPdCueYfCg, wherein a to g satisfy 80≤a≤87, 0≤b≤9, 3≤c≤14, 1≤d≤8, 0.2≤e≤2.5, 0≤f≤3.0, 0≤g≤4.0, and 0≤(e/f)≤4 in terms of atomic percentage value.
Claims15
An alloy composition expressed by a compositional formula FeaSibBcPdCueYf,
- wherein a to g satisfy 80≤a≤87, 0<b≤9, 3≤c≤14, 1≤d≤8, 0.2≤e≤2.5, 0.5≤f≤3.0-2.5 and (e/f)≤4 in an atomic percentage value,
- wherein a difference between a first crystallization temperature (Tx1) and a second crystallization temperature (Tx2) of the alloy composition is 170 to 190° C.
Dependencies are inferred from the claim text.