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1.发明申请公开(公告)号：US20220037067A1
公开(公告)日：2022-02-03
申请号：US17370800
申请日：2021-07-08
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoko ORIMO , Tomoo KASHIWA
Abstract: A metal magnetic powder is constituted by metal magnetic grains that each include: a metal phase where the mass percentage of Fe at its center part is lower than that at its contour part; and an oxide film covering the metal phase so as to allow the magnetic body resistant to magnetic saturation and low in iron loss.
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公开(公告)号：US20200279676A1
公开(公告)日：2020-09-03
申请号：US16798870
申请日：2020-02-24
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoko ORIMO , Shinsuke TAKEOKA
Abstract: A soft magnetic alloy powder contains Fe, Si, and at least one of Cr and Al, as constituent elements, wherein, on the surface of each grain constituting the alloy powder, an oxide film is provided which is such that: it contains Si, as well as at least one of Cr and Al, as constituent elements; these elements are contained at higher percentages by mass than those in the alloy part inside the grain; and the content of Si, expressed in percentage by mass, is higher than the total content of Cr and Al. The soft magnetic metal powder can achieve a higher filling rate.
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公开(公告)号：US20200277689A1
公开(公告)日：2020-09-03
申请号：US16798828
申请日：2020-02-24
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoko ORIMO , Tomoo KASHIWA
Abstract: In an exemplary embodiment, a magnetic alloy powder is constituted by magnetic grains 100 whose alloy phase 1 is coated with an oxide film 2, wherein: the alloy phase 1 has a Fe content of 98 percent by mass or higher and also contains Si and at least one type of non-Si element that oxidizes more easily than Fe (element M); and the oxide film 2 is such that, at the location where the content of Si as expressed in percentage by mass is the highest according to the element distributions in the direction of film thickness, this content of Si is higher than the content of Fe, and also higher than the content of element M, at this location. The magnetic alloy powder has a high Fe content and also offers excellent insulating property.
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公开(公告)号：US20210065974A1
公开(公告)日：2021-03-04
申请号：US17002703
申请日：2020-08-25
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoko ORIMO , Tomoo KASHIWA , Takashi NAKAJIMA
IPC: H01F41/04 , H01F27/255 , H01F1/24 , H01F27/32
Abstract: A magnetic body of the coil component is constituted by soft magnetic metal grains joined together via a glass phase, wherein the soft magnetic metal grains contain Fe in their metal part and also have, on their surface, an amorphous insulation layer containing Si and O, and wherein the percentage by mass of Si relative to all elements in the insulation layer is higher than that in the glass phase. The coil component can offer improved dielectric breakdown voltage.
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5.发明申请公开(公告)号：US20180374619A1
公开(公告)日：2018-12-27
申请号：US16009018
申请日：2018-06-14
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoko ORIMO , Xinyu LI , Shinsuke TAKEOKA
Abstract: A magnetic material includes a soft magnetic metal grain containing Fe, and a multilayer oxide film covering the surfaces of the soft magnetic metal grain. The multilayer oxide film has a first oxide layer of crystalline nature containing Fe, and a second oxide layer of amorphous nature containing Si. In an embodiment, the silicon oxide film of amorphous nature is formed by dripping, divided into multiple sessions, a treatment solution containing TEOS (tetraethoxy silane), ethanol, and water into a mixed solution containing the soft magnetic metal grain, ethanol, and ammonia water, to mix the solutions.
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Patent Agency Ranking
公开(公告)号：US20160293308A1
公开(公告)日：2016-10-06
申请号：US15087651
申请日：2016-03-31
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Minoru RYU , Shinsuke TAKEOKA , Yoko ORIMO , Yoshiki IWAZAKI , Kenji OTAKE
CPC classification number: C22C38/02 , B22F1/02 , C22C38/06 , C22C38/14 , C22C38/28 , C22C38/34 , C22C2202/02 , H01F1/24 , H01F1/33
Abstract: In an embodiment, a magnetic body includes soft magnetic alloy grains 11 containing Fe, element L, and element M (where element L is Si or Zr and element M is a metal element other than Si or Zr that oxidizes more easily than Fe), as well as oxide film produced from oxidization of part of these grains 11; wherein at least some of the bonds between adjacent soft magnetic alloy grains 11 are by way of the oxide film; the oxide film has an inner film 12a, and an outer film 12b positioned on the outer side of the inner film 12a; and the inner film 12a contains more of element L than element M, while the outer film 12b contains more of element M than element L.
Abstract translation: 在一个实施例中，磁体包括含有Fe，元素L和元素M（元素L是Si或Zr，并且元素M是比Fe更容易氧化的Si或Zr以外的金属元素）的软磁性合金晶粒11， 以及由这些晶粒11的一部分的氧化产生的氧化膜; 其中相邻的软磁性合金晶粒11之间的至少一些键合是通过氧化膜; 氧化膜具有内膜12a和位于内膜12a的外侧的外膜12b; 并且内膜12a比元件M包含更多的元件L，而外膜12b包含比元件L更多的元件M.
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公开(公告)号：US20230340651A1
公开(公告)日：2023-10-26
申请号：US18342632
申请日：2023-06-27
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoko ORIMO , Tomoo KASHIWA
CPC classification number: C22C38/18 , H01F1/153 , B22F3/24 , H01F41/0246 , C22C38/02 , B22F1/16 , C22C2202/02 , B22F2003/248 , B22F2301/35
Abstract: A magnetic body of the coil component contains, as soft magnetic alloy grains, first grains whose alloy components are substantially Fe, Si, and Cr, and second grains which contain, as alloy components, Fe, Si, and an element other than Si or Cr that oxidizes more easily than Fe; the first grains have, on their surface, an amorphous oxide film containing Si and Cr; the second grains have, on their surface, a crystalline oxide layer containing the element other than Si or Cr that oxidizes more easily than Fe; and the crystalline oxide forms adhesion parts, each contacting a multiple number of the first grains via the amorphous oxide film thereof and coupling or bridging the multiple number of the first grains. The coil component can offer improved mechanical strength.
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8.发明申请公开(公告)号：US20220068525A1
公开(公告)日：2022-03-03
申请号：US17399698
申请日：2021-08-11
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoko ORIMO , Tomoo KASHIWA , Takayuki ARAI , Hirotaro SEINO
IPC: H01F1/147 , H01F27/255 , H01F27/28 , H01F41/02
Abstract: One object is to provide a magnetic body having a high mechanical strength. A magnetic body according to one embodiments of the present invention includes: first particles of a first alloy containing Fe and Cr; second particles of a second alloy containing at least one of Al or Mn; and bonding portions containing at least one of Al oxide or Mn oxide, the bonding portions bonding the first particles to each other. The bonding portions containing at least one of Al oxide or Mn oxide increase the mechanical strength of the magnetic body.
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公开(公告)号：US20160254082A1
公开(公告)日：2016-09-01
申请号：US15055356
申请日：2016-02-26
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Atsushi TANADA , Kenji TAKASHIMA , Yoko ORIMO
CPC classification number: C22C38/002 , C22C33/0221 , C22C33/0257 , C22C38/06 , C22C38/34 , C22C2202/02 , H01F1/24 , H01F1/33 , H01F41/0246
Abstract: In some embodiments, a magnetic body 1 has soft magnetic alloy grains 11 that contain Fe, M (M is a metal element that oxidizes more easily than Fe), and S, as well as oxide films 12 produced by partial oxidization of the soft magnetic alloy grains 11, wherein the magnetic body 1 has its adjacent soft magnetic alloy grains 11 bonded together at least partially through the oxide films 12, and contains Fe by 92.5 to 96 percent by weight and S by 0.003 to 0.02 percent by weight. The magnetic body can have high levels of both magnetic permeability and volume resistivity, to meet the demand for smaller, higher-performance electronic components.
Abstract translation: 在一些实施例中，磁体1具有含有Fe，M（M是比Fe更容易氧化的金属元素）的软磁性合金晶粒11，以及通过软磁体的部分氧化产生的氧化物膜12 合金晶粒11，其中磁体1具有至少部分地通过氧化膜12结合在一起的相邻的软磁性合金晶粒11，并且含有92.5至96重量％的Fe和0.003至0.02重量％的S。 磁体可以具有高水平的磁导率和体积电阻率，以满足对更小，更高性能的电子部件的需求。
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公开(公告)号：US20240127997A1
公开(公告)日：2024-04-18
申请号：US18395027
申请日：2023-12-22
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoko ORIMO , Shinsuke TAKEOKA
CPC classification number: H01F1/14791 , H01F1/33 , H01F41/0246
Abstract: A magnetic body is constituted by grains of a soft magnetic alloy bonded together via an oxide layer, wherein: the soft magnetic alloy is an alloy containing Si by 1 to 5.5 percent by mass, and Cr and/or Al by 0.2 to 4 percent by mass in total, as constituent elements, with Fe and unavoidable impurities accounting for the remainder, wherein a content of Si is more than a content of Cr and Al in total; and the oxide layer contains Si, as well as at least one of Fe, Cr, and Al, where, among Fe, Si, Cr, and Al, Si is contained in the largest quantity based on mass. The magnetic body can have high magnetic permeability.
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