公开(公告)号：US20230099171A1

公开(公告)日：2023-03-30

申请号：US17950431

申请日：2022-09-22

Applicant: DENSO CORPORATION ,  NICHIA CORPORATION

Inventor： Hiroaki KURA ,  Takahiro NISHIO ,  Eiji WATANABE ,  Yoshiaki HAYASHI ,  Takayuki YAMAMOTO ,  Hisashi MAEHARA ,  Takanori MATSUNO

IPC: C22C38/08 ,  C23C8/26 ,  C22C38/00

Abstract: An L10 type iron-nickel (FeNi) ordered alloy has an L10 type ordered structure and contains sulfur. The L10 type FeNi ordered alloy may have a sulfur content in a range from 0.01% by mass to 10% by mass. A manufacturing method of an L10 type FeNi ordered alloy includes performing a nitriding treatment to an FeNi alloy containing sulfur to obtain a nitride containing Fe and Ni.

公开(公告)号：US20200075201A1

公开(公告)日：2020-03-05

申请号：US16678344

申请日：2019-11-08

Applicant: DENSO CORPORATION

Inventor： Sho GOTO ,  Eiji WATANABE

IPC: H01F1/047 ,  C23C8/26 ,  C22C19/03 ,  C22C38/08

Abstract: A magnetic material includes an FeNi ordered alloy. The FeNi ordered alloy has L10 ordered structure and is provided as an acicular particle having a longer axis and a shorter axis. A method for manufacturing a magnetic material including an FeNi ordered alloy includes preparing an FeNi disordered alloy provided as an acicular particle, and performing a nitriding treatment of nitriding the FeNi disordered alloy. The magnetic material manufacturing method further includes obtaining an L10-type FeNi ordered alloy provided as the acicular particle, by performing a denitrification treatment of removing nitrogen from the FeNi disordered alloy on which the nitriding treatment has been performed.

公开(公告)号：US20200071811A1

公开(公告)日：2020-03-05

申请号：US16674132

申请日：2019-11-05

Applicant: DENSO CORPORATION

Inventor： Eiji WATANABE ,  Yuta SAIGA ,  Hidehiko HIRAMATSU ,  Sho GOTO ,  Ryota SHINOZAKI ,  Hiroaki KURA

IPC: C23C8/26 ,  C22C38/08 ,  C22C38/00 ,  H01F1/047

Abstract: An FeNi ordered alloy contained in a magnetic material has an L10 ordered structure, is doped with an light element, and is provided as a granular particle. A method for manufacturing a magnetic material including an FeNi ordered alloy having an L10 ordered structure includes preparing an FeNi ordered alloy provided as a granular particle, and doping a light element into the FeNi ordered alloy.

公开(公告)号：US20200066430A1

公开(公告)日：2020-02-27

申请号：US16672865

申请日：2019-11-04

Applicant: DENSO CORPORATION

Inventor： Hiroaki KURA ,  Eiji WATANABE ,  Masane KIN ,  Kenta OSANAI

IPC: H01F1/055 ,  B22F1/00

Abstract: An L10-FeNi magnetic powder has an average particle size of 50 nm to 1 μm, and an average value of sphericity P of 0.9 or more. The sphericity P is defined as P=Ls/Lr, where Lr is a perimeter of an L10-FeNi magnetic powder particle on an image of a microscope, and Ls is a perimeter of a perfect circle that has a same area as the L10-FeNi magnetic powder particle on the image for which Lr is calculated.

公开(公告)号：US20200070241A1

公开(公告)日：2020-03-05

申请号：US16677755

申请日：2019-11-08

Applicant: DENSO CORPORATION

Inventor： Yuta SAIGA ,  Sho GOTO ,  Ryota SHINOZAKI ,  Hiroaki KURA ,  Eiji WATANABE

IPC: B22F1/00 ,  H01F1/047 ,  C08K9/02 ,  C08K3/08 ,  B22F1/02 ,  C22C19/03

Abstract: A magnetic powder is provided. The magnetic powder includes a main body portion including an L10-FeNi. The magnetic powder further includes an oxide layer formed on a surface of the main body portion. A magnet is also provided. The magnet includes a base material. The magnet further includes the magnetic powder dispersed in the base material.