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公开(公告)号：US20230002662A1
公开(公告)日：2023-01-05
申请号：US17900629
申请日：2022-08-31
Applicant: KABUSHIKI KAISHA TOSHIBA , TOSHIBA MATERIALS CO., LTD.
Inventor： Takahiro KAWAMOTO , Tomoko EGUCHI , Tomohiro YAMASHITA , Masaya HAGIWARA , Akiko SAITO , Daichi USUI
Abstract: A cold storage material, which has a large specific heat and a small magnetization in an extremely low temperature region and has satisfactory manufacturability, is provided, and a method for manufacturing the same is provided. Further, a refrigerator having high efficiency and excellent cooling performance is provided by filling this refrigerator with the above-described cold storage material. Moreover, a device incorporating a superconducting coil capable of reducing influence of magnetic noise derived from a cold storage material is provided. The cold storage material of embodiments is a granular body composed of an intermetallic compound in which the ThCr2Si2-type structure 11 occupies 80% by volume or more, and has a crystallite size of 70 nm or less.
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公开(公告)号：US20210309904A1
公开(公告)日：2021-10-07
申请号：US17211376
申请日：2021-03-24
Applicant: KABUSHIKI KAISHA TOSHIBA , TOSHIBA MATERIALS CO., LTD.
Inventor： Takahiro KAWAMOTO , Tomoko EGUCHI , Tomohiro YAMASHITA , Masaya HAGIWARA , Akiko SAITO , Daichi USUI
Abstract: A cold storage material, which has a large specific heat and a small magnetization in an extremely low temperature region and has satisfactory manufacturability, is provided, and a method for manufacturing the same is provided. Further, a refrigerator having high efficiency and excellent cooling performance is provided by filling this refrigerator with the above-described cold storage material. Moreover, a device incorporating a superconducting coil capable of reducing influence of magnetic noise derived from a cold storage material is provided. The cold storage material of embodiments is a granular body composed of an intermetallic compound in which the ThCr2Si2-type structure 11 occupies 80% by volume or more, and has a crystallite size of 70 nm or less.
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公开(公告)号：US20230002663A1
公开(公告)日：2023-01-05
申请号：US17900637
申请日：2022-08-31
Applicant: KABUSHIKI KAISHA TOSHIBA , TOSHIBA MATERIALS CO., LTD.
Inventor： Takahiro KAWAMOTO , Tomoko EGUCHI , Tomohiro YAMASHITA , Masaya HAGIWARA , Akiko SAITO , Daichi USUI
Abstract: A cold storage material, which has a large specific heat and a small magnetization in an extremely low temperature region and has satisfactory manufacturability, is provided, and a method for manufacturing the same is provided. Further, a refrigerator having high efficiency and excellent cooling performance is provided by filling this refrigerator with the above-described cold storage material. Moreover, a device incorporating a superconducting coil capable of reducing influence of magnetic noise derived from a cold storage material is provided. The cold storage material of embodiments is a granular body composed of an intermetallic compound in which the ThCr2Si2-type structure 11 occupies 80% by volume or more, and has a crystallite size of 70 nm or less.
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公开(公告)号：US20230085118A1
公开(公告)日：2023-03-16
申请号：US17689455
申请日：2022-03-08
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Masaya HAGIWARA , Tomoko EGUCHI , Keiko ALBESSARD , Yasushi HATTORI
Abstract: A connection structure of a superconducting layer according to an embodiment includes a first superconducting layer, a second superconducting layer, and a connection layer provided between the first superconducting layer and the second superconducting layer and including a first substance containing a rare earth element, barium, copper, and oxygen and a second substance containing a metal element, in which a first region per unit area at a first interface between the first superconducting layer and the connection layer is 1% or more and 50% or less where the second substance and the first superconducting layer are in contact with each other, and a second region per unit area at a second interface between the second superconducting layer and the connection layer is 1% or more and 50% or less where the second substance and the second superconducting layer are in contact with each other.
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公开(公告)号：US20220302609A1
公开(公告)日：2022-09-22
申请号：US17466981
申请日：2021-09-03
Inventor： Yasushi HATTORI , Tomoko EGUCHI , Masaya HAGIWARA , Keiko ALBESSARD
Abstract: A connection structure of a superconducting layer of an embodiment incudes a first superconducting member including a first superconducting layer, and extends in a first direction, a second superconducting member including a second superconducting layer facing the first superconducting layer, and extends in the first direction, the second superconducting member having a first region, a second region, and a third region which is separated in the second direction from the second region, and a connection layer that contains a rare earth element (RE), barium (Ba), copper (Cu), and oxygen (O), and connects the first superconducting layer and the second superconducting layer. The first superconducting layer is present in a third direction between the second region and the third region, the third direction being perpendicular to the first direction and perpendicular to the second direction.
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Patent Agency Ranking
公开(公告)号：US20240048004A1
公开(公告)日：2024-02-08
申请号：US18174890
申请日：2023-02-27
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Takahiro KAWAMOTO , Masaya HAGIWARA , Shinya SAKURADA
CPC classification number: H02K1/02 , H02K7/1823
Abstract: According to an embodiment, a permanent magnet has a composition represented by a composition formula: RpFeqMrCutCo100-p-q-r-t (where, R is at least one element selected from rare earth elements, M is at least one element selected from Zr, Ti, and Hf, p is a number that satisfies 10.0 at %≤p≤14.5 at %, r is a number that satisfies 1.5 at %
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公开(公告)号：US20230030881A1
公开(公告)日：2023-02-02
申请号：US17653952
申请日：2022-03-08
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yasushi HATTORI , Tomoko EGUCHI , Masaya HAGIWARA , Keiko ALBESSARD
Abstract: A connection structure of conductive layers according to an embodiment includes: a first conductive member including a first conductive layer and a first substrate, the first conductive member extending in a first direction, the first conductive member curved in the first direction such that the first conductive layer side is convex; a second conductive member including a second conductive layer and a second substrate, the second conductive member extending in the first direction, the second conductive member curved in the first direction such that the second conductive layer side is convex; a third conductive member including a third conductive layer and a third substrate, the third conductive member extending in the first direction; a first connection layer between a the first conductive layer and the third conductive layer, the first connection layer having varying thickness; and a second connection layer between the second conductive layer and the third conductive layer, the second connection layer having varying thickness.
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公开(公告)号：US20240113578A1
公开(公告)日：2024-04-04
申请号：US18479658
申请日：2023-10-02
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Eri KINOSHITA , Yasuaki HADAME , Masaya HAGIWARA , Kei MATSUOKA
Abstract: According to one embodiment, a rotary electric machine includes a rotor and a stator. The rotor includes a rotary shaft, a first core, a permanent magnet, and an intermediate member. The rotary shaft extends in a first direction. The first core is provided around the rotary shaft in a first plane perpendicular to the first direction. The permanent magnet is provided around the first core in the first plane. The intermediate member is provided between the rotary shaft and the first core. The intermediate member includes a first portion containing a carbon fiber, and a second portion aligned with the first portion in the first direction and containing a metal. The stator is provided around the rotor in the first plane.
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9.发明公开公开(公告)号：US20230268099A1
公开(公告)日：2023-08-24
申请号：US17929409
申请日：2022-09-02
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yasushi HATTORI , Tomoko EGUCHI , Masaya HAGIWARA , Keiko ALBESSARD
Abstract: A connection structure for a superconducting layer according to an embodiment includes a first superconducting layer, a second superconducting layer, and a connection layer between the first superconducting layer and the second superconducting layer, the connection layer including crystal particles containing a rare earth element, barium, copper, and oxygen, the crystal particles having a major diameter distribution including a trimodal distribution. The trimodal distribution has first, second, and third distributions in which major diameter become small in this order. The aspect ratios of the crystal particles included in the first distribution and the second distribution include a bimodal distribution. The median value of the major diameters of the crystal particles included in the distribution on a higher aspect ratio side in the bimodal distribution is greater than the median value of the major diameters of the crystal particles included in the distribution on a lower aspect ratio side.
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公开(公告)号：US20180190415A1
公开(公告)日：2018-07-05
申请号：US15910350
申请日：2018-03-02
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Masaya HAGIWARA , Toshihide Takahashi , Yosuke Horiuchi , Shinya Sakurada
CPC classification number: H01F1/0557 , B22F1/0085 , B22F3/02 , B22F3/10 , B22F3/1007 , B22F3/1017 , B22F5/008 , B22F2009/044 , B22F2201/11 , B22F2201/20 , B22F2202/05 , B22F2301/15 , B22F2304/10 , B22F2998/10 , B22F2999/00 , C22C19/07 , C22C2202/02 , C22F1/10 , H02K1/02 , H02K1/276 , H02K1/2766 , H02K7/003 , H02K7/1823 , B22F3/1003
Abstract: A high-performance permanent magnet is provided. The magnet is expressed by a composition formula: RpFeqMrCutCo100-p-q-r-t. The magnet includes a sintered body including: a plurality of crystal grains each having a Th2Zn17 crystal phase; and a plurality of grain boundaries between the crystal grains. If an oxide phase of the R element is defined by a continuous region that is disposed in the sintered body and contains the R element and oxygen having a concentration of 85 atomic percent or more, a ratio of the number of the oxide phases in the grain boundaries to the number of the crystal grains is 1.1 or less.
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