Soft magnetic alloy powder, dust core, magnetic component, and electronic device
AssigneeTDK Corporation
InventorsKazuhiro Yoshidome, Hiroyuki Matsumoto, Kenji Horino, Masakazu Hosono, Yoshiki Kajiura
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Abstract
A soft magnetic alloy powder includes a main component of (Fe(1−(α+β))X1αX2β)(1−(a+b+c+d+e+f))MaBbPcSidCeSf, in which X1 is one or more of Co and Ni, X2 is one or more of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements, and M is one or more of Nb, Hf, Zr, Ta, Mo, W, Ti, and V. 0≤a≤0.160, 0.020≤b≤0.200, 0≤c≤0.150, 0≤d≤0.060, 0≤e≤0.030, 0.0010≤f≤0.030, 0.005≤f/b≤1.50, α≥0, β≥0, and 0≥α+β≥0.50 are satisfied.
Claims7
A soft magnetic alloy powder comprising nanocrystals and comprising a main component of (Fe(1−(α+β))X1α×2β)(1−(a+b+c+d+e+f))MaBbPcSidCeSf, where:
- X1 is one or more of Co and Ni,
- X2 is one or more of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements,
- M is Nb,
- a, b, c, d, e, f, a, and β are atomic ratios, and
- 0.070≤a≤0.160,
- 0.020≤b≤0.200,
- 0.030≤c≤0.050,
- 0≤d≤0.060,
- 0≤e≤0.030,
- 0.0010≤f≤0.030,
- 0.005≤f/b≤1.50,
- 0.735≤1−(a+b+c+d+e+f)≤0.900,
- α≥0,
- β≥0, and
- 0≤α+β≤0.50 are satisfied,
- wherein an average circularity of the soft magnetic alloy powder is 0.95 or more,
- the nanocrystals have a bcc phase, and
- a compound phase other than a bcc phase in the nanocrystals has a crystallinity of 2% or less.
Dependencies are inferred from the claim text.