公开(公告)号：US20240304365A1

公开(公告)日：2024-09-12

申请号：US18276245

申请日：2022-02-10

Applicant: Proterial, Ltd.

Inventor： Shinya OKAMOTO ,  Atsuhiko ONUMA ,  Nobuyuki OKAMURA ,  Kousuke KUWABARA ,  Shunya ADACHI ,  Masahiro SATO ,  Takahiro ISHII

IPC: H01F1/055 ,  B22F9/08 ,  B22F10/28 ,  B22F10/64 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y80/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/30

CPC classification number: H01F1/055 ,  B22F9/082 ,  B22F10/28 ,  B22F10/64 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y80/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/30 ,  B22F2009/0824 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2999/00 ,  C22C2202/02

Abstract: The purpose of the present invention is to provide: an iron-chromium-cobalt alloy magnet having improved magnetic characteristics, especially maximum energy product; and a method for producing the same. Provided is an iron-chromium-cobalt alloy magnet, wherein: the iron-chromium-cobalt alloy magnet includes titanium; the number density of Ti-enriched phases having a maximum diameter of 3 μm or greater in a cross-section is, on average, less than 1.0 per 10,000 μm2; and the squareness ratio represented by (BH)ma×/(Br×HcB) exceeds 0.72.