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公开(公告)号：US10991495B2
公开(公告)日：2021-04-27
申请号：US16221977
申请日：2018-12-17
Applicant: TDK CORPORATION
Inventor： Kazuhiro Yoshidome , Hiroyuki Matsumoto , Kenji Horino , Akito Hasegawa , Hajime Amano , Kensuke Ara , Akihiro Harada
Abstract: A soft magnetic alloy which includes nanocrystal parts and amorphous parts is provided. The nanocrystal parts include αFe(—Si) as a main component, and include at least one of elements selected from B, P, C, Ti, Zr, Hf, Nb, Ta, Mo, V, W, Cr, Al, Mn, Zn, and Cu as a sub-component. When a total content ratio of the sub-component in the nanocrystal parts is set as α (at %), and a total content ratio of the sub-components of the nanocrystal parts included in the amorphous parts is set as β (at %), 0.01≤(α/β)≤0.40, and a crystallinity degree is 5% or more and 70% or less.
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公开(公告)号：US10535455B2
公开(公告)日：2020-01-14
申请号：US15880920
申请日：2018-01-26
Applicant: TDK CORPORATION
Inventor： Akihiro Harada , Hiroyuki Matsumoto , Kenji Horino , Kazuhiro Yoshidome , Akito Hasegawa , Hajime Amano , Kensuke Ara , Seigo Tokoro , Shota Otsuka
IPC: H01F27/255 , H01F1/153 , H01F27/28 , H01F41/02 , H01F41/06
Abstract: A soft magnetic alloy including a main component having a compositional formula of (Fe(1−(α+β))X1αX2β)(1−(a+b+c))MaBbPc, and a sub component including at least C, S and Ti, wherein X1 is one or more selected from the group including Co and Ni, X2 is one or more selected from the group including Al, Mn, Ag, Zn, Sn, As, Sb, Bi, and rare earth elements, “M” is one or more selected from the group including Nb, Hf, Zr, Ta, Mo, W, and V, 0.020≤a≤0.14, 0.020≤b≤0.20, 0≤c≤0.040, α≥0, β≥0, and 0≤α+β≤0.50 are satisfied, when entire said soft magnetic alloy is 100 wt %, a content of said C is 0.001 to 0.050 wt %, a content of said S is 0.001 to 0.050 wt %, and a content of said Ti is 0.001 to 0.080 wt %, and when a value obtained by dividing the content of said C by the content of said S is C/S, then C/S satisfies 0.10≤C/S≤10.
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