公开(公告)号：US20190172617A1

公开(公告)日：2019-06-06

申请号：US16189167

申请日：2018-11-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kiyotaka ONODERA

IPC: H01F1/153 ,  C22C38/16 ,  C22C33/00 ,  C22C45/02

CPC classification number: H01F1/15308 ,  B32B15/013 ,  B32B15/015 ,  C22C33/003 ,  C22C38/16 ,  C22C45/02 ,  H01F1/15333

Abstract: It is an object of the present disclosure to produce a soft magnetic material having high saturation magnetization by heat-treating a Fe-based amorphous alloy, without needing the control of the atmosphere.The present disclosure provides a method for producing a soft magnetic material, comprising heat treating a Fe-based amorphous alloy in a state in which the alloy is wrapped with a sheet comprising one or more substances having a standard Gibbs energy of formation of an oxide thereof that is larger in a negative direction than Fe, to form a crystal phase.

公开(公告)号：US20190185950A1

公开(公告)日：2019-06-20

申请号：US16323228

申请日：2017-08-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MONASH UNIVERSITY

Inventor： Kiyotaka ONODERA ,  Kiyonori SUZUKI ,  Richard PARSONS ,  Bowen ZANG

IPC: C21D6/00 ,  C22C45/02 ,  C22C33/00 ,  H01F1/153

CPC classification number: C21D6/00 ,  C22C33/003 ,  C22C38/00 ,  C22C45/02 ,  C22C2200/02 ,  C22C2202/02 ,  H01F1/153 ,  H01F1/1535

Abstract: A method for producing a soft magnetic material having both high saturation magnetization and low coercive force, including: preparing an alloy having a composition represented by Compositional Formula 1 or 2 and having an amorphous phase, and heating the alloy at a rate of temperature rise of 10° C./sec or more and holding for 0 to 80 seconds at a temperature equal to or higher than the crystallization starting temperature and lower than the temperature at which Fe—B compounds start to form wherein, Compositional Formula 1 is Fe100-x-yBxMy, M represents at least one element selected from Nb, Mo, Ta, W, Ni, Co and Sn, and x and y are in atomic percent (at %) and satisfy the relational expressions of 10≤x≤16 and 0≥y≤8, and Compositional Formula 2 is Fe100-a-b-cBaCubM′c, M′ represents at least one element selected from Nb, Mo, Ta, W, Ni and Co, and a, b and c are in atomic percent (at %) and satisfy the relational expressions 10≤a≤16, 0

公开(公告)号：US20150364235A1

公开(公告)日：2015-12-17

申请号：US14737876

申请日：2015-06-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Daisuke OKAMOTO ,  Kiyotaka ONODERA ,  Shinjiro SAIGUSA ,  Kohei ISHII ,  Masashi OHTSUBO ,  Junghwan HWANG ,  Masaaki TANI ,  Takeshi HATTORI

IPC: H01F1/24 ,  B22F3/12 ,  H01F27/255 ,  H01F1/147 ,  H01F41/02 ,  H01F3/08

CPC classification number: H01F1/24 ,  B22F1/02 ,  B22F2998/10 ,  C22C33/0257 ,  C22C33/0264 ,  H01F1/14791 ,  H01F1/33 ,  H01F3/08 ,  H01F27/255 ,  H01F41/0246 ,  B22F2009/0828 ,  B22F9/08 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10

Abstract: A soft magnetic member is formed such that, when a differential relative permeability in an applied magnetic field of 100 A/m is represented by a first differential relative permeability μ′L, and when a differential relative permeability in an applied magnetic field of 40 kA/m is represented by a second differential relative permeability μ′H, a ratio of the first differential relative permeability μ′L to the second differential relative permeability μ′H satisfies a relationship of μ′L/μ′H≦10, and a magnetic flux density in an applied magnetic field of 60 kA/m is 1.15 T or higher.

Abstract translation: 形成软磁性构件，使得当施加的100A / m的磁场中的微分相对磁导率由第一差分相对磁导率μ'L表示时，并且当施加的磁场中的差分相对磁导率为40kA时 / m由第二微分相对磁导率μ'H表示，第一微分相对磁导率μ'L与第二微分相对磁导率μ'H的比率满足μ'L/μ'H＆nlE; 10的关系，a 60kA / m的施加磁场中的磁通密度为1.15T以上。

公开(公告)号：US20190181731A1

公开(公告)日：2019-06-13

申请号：US16197018

申请日：2018-11-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Fumitaka YOSHINAGA ,  Kazuaki HAGA ,  Kensuke KOMORI ,  Kiyotaka ONODERA

IPC: H02K15/02 ,  H02K3/34 ,  H02K3/32 ,  H02K1/02

Abstract: An object of the present disclosure is to provide a production method for a stator in which a breakage of the stator core can be prevented when coils are mounted thereon. The present embodiment is a production method for a stator that includes a stator core having a tooth and includes a coil wound around the tooth. The method includes: a step of preparing a stacked body which has the tooth and in which a plurality of plate-like soft magnetic materials each including an amorphous structure are stacked; a step of mounting the coil on the tooth; and a step of, after the coil is mounted, heating the stacked body to a temperature equal to or higher than a crystallization temperature of the soft magnetic materials.