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US 8,287,665 B2Granted
Soft magnetic alloy, magnetic part using soft magnetic alloy, and method of manufacturing same
AssigneesNEC Tokin Corporation, Tohoku University
InventorsAkiri Urata, Hiroyuki Matsumoto, Akihiro Makino
Life of this patent
Estimating the term…
Abstract
A soft magnetic alloy contains P, B, and Cu as essential components. As a preferred example, an Fe-based alloy contains Fe of 70 atomic % or more, B of 5 atomic % to 25 atomic %, Cu of 1.5 atomic % or less (excluding zero), and P of 10 atomic or less (excluding zero).
Claims21
The soft magnetic alloy comprising an Fe-based alloy composition has components represented by the following formula:
- (Fe1-aM1a)100-b-c-d-e-f-gM2bBcPdCueM3fM4g
- where M1 is at least one element selected from the group consisting of Co and Ni,
- M2 is at least one element selected from the group consisting of Nb, Mo, Zr, Ta, W, Hf, Ti V, Cr, and Mn,
- M3 is at least one element selected from the group consisting of elements of a platinum group, element selected from the group consisting of Pd, Pt, Rh, Ir, Ru, and Os, rare-earth element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, dy, Ho, Er, Tm, Yb, and Lu, Au, Ag, Zn, Sn, Sb, In, Rb, Sr, Cs, and Ba,
- M4 is at least one element selected from the group consisting of C, Si, Al, Ga, and Ge, a, b, c, d, e, f, and g are values that conditions that 0≦a≦0.5, 0≦b≦5, 5≦c≦25, 0.2 ≦d≦10, 0<e≦1.0, 0 ≦f≦2, 1≦g≦8, and 70≦100-b-c-d-e-f-g.
2 more elements
Dependencies are inferred from the claim text.