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公开(公告)号：US20210301380A1
公开(公告)日：2021-09-30
申请号：US17211970
申请日：2021-03-25
申请人： TDK CORPORATION
发明人： Isao NAKAHATA , Takuya TSUKAHARA
IPC分类号： C22C45/02 , B32B37/12 , B32B3/30 , B32B15/04 , B32B15/092 , B32B15/18 , H01F3/04 , C22C45/04
摘要： An alloy ribbon that is an alloy ribbon containing a metal as a main component, and has a recess on at least one principal surface, in which a depth of the recess is 5% or more and 75% or less of an average thickness.
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公开(公告)号：US20210304936A1
公开(公告)日：2021-09-30
申请号：US17209422
申请日：2021-03-23
申请人： TDK CORPORATION
IPC分类号： H01F3/04 , H01F1/153 , H01F1/147 , C22C1/00 , C21D9/56 , B22D11/00 , C21D6/00 , C22C45/02 , C22C38/02 , C22C19/07
摘要： The object of the present invention is to provide an alloy ribbon capable of having excellent adhesiveness between the alloy ribbons when a plurality of the alloy ribbons is stacked; and also, to provide a magnetic core using the alloy ribbon. The present invention is an alloy ribbon comprising metals scattered on at least one surface of the alloy ribbon, in which diameters of the scattered metals are 1 μm or more, and the scattered metals include Cu.
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公开(公告)号：US20210156011A1
公开(公告)日：2021-05-27
申请号：US16952358
申请日：2020-11-19
申请人： TDK CORPORATION
摘要： A soft magnetic alloy ribbon having high corrosion resistance and good magnetic properties is obtained. The soft magnetic alloy ribbon contains Fe and M. M is at least one selected from the group consisting of Nb, Ta, W, Zr, Hf, Mo, Cr, and Ti, and a part of M is included in oxides. A maximum point of a concentration of at least one of M included in the oxides is present in a region within 20 nm from the surface, when a concentration distribution of an element contained in the soft magnetic alloy ribbon is measured from a surface toward an interior of the soft magnetic alloy ribbon in a thickness direction.
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公开(公告)号：US20230085009A1
公开(公告)日：2023-03-16
申请号：US17893502
申请日：2022-08-23
申请人： TDK CORPORATION
发明人： Kyotaro ABE , Isao NAKAHATA , Takuya TSUKAHARA
摘要： A specific depth at which a concentration of Fe reaches 10 at % is 18 nm or more and 500 nm or less from the first surface, and from the first surface to the specific depth, the concentration of Fe is less than 10 at %, and a positive increase region is present in which the concentration of Fe increases with a substantially positive concentration gradient, in a case where the concentration of Fe is measured in a depth direction from a first surface of a ribbon.
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公开(公告)号：US20230079841A1
公开(公告)日：2023-03-16
申请号：US17893463
申请日：2022-08-23
申请人： TDK CORPORATION
发明人： Kyotaro ABE , Isao NAKAHATA , Takuya TSUKAHARA
摘要： Provided a soft magnetic alloy ribbon containing Fe and B. Convex portions having an average convex portion height of 7 nm to 130 nm are present on an alloy surface.
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6.发明申请公开(公告)号：US20220328224A1
公开(公告)日：2022-10-13
申请号：US17702972
申请日：2022-03-24
申请人： TDK CORPORATION
摘要： To provide a soft magnetic alloy or the like, from which a magnetic component having a good temperature property of core loss can be obtained. The soft magnetic alloy includes Fe. The soft magnetic alloy includes a crystallite, and an amorphous phase existing around the crystallite. A total area ratio of the crystallite in a cross section of the soft magnetic alloy is 40% or more and less than 60%. An average thickness of the amorphous phase is 3.0 nm or more and 10.0 nm or less. A standard deviation of a thickness of the amorphous phase is 10.0 nm or less.
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公开(公告)号：US20210159001A1
公开(公告)日：2021-05-27
申请号：US16952770
申请日：2020-11-19
申请人： TDK CORPORATION
摘要： A soft magnetic alloy ribbon having high corrosion resistance is obtained. The soft magnetic alloy ribbon contains Fe, P, and Si. A maximum point of a concentration of P and a maximum point of a concentration of Si including in oxides is present in a region within 20 nm from the surface, when a concentration distribution of an element contained in the soft magnetic alloy ribbon is measured from a surface toward an interior of the soft magnetic alloy ribbon in a thickness direction.
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