公开(公告)号：US20250065403A1

公开(公告)日：2025-02-27

申请号：US18945705

申请日：2024-11-13

Applicant: AGC Inc.

Inventor： Yasunari ISHIKAWA ,  Hiroshi DOTO ,  Koji NAITO ,  Keishi TSUKIYAMA

IPC: B22F9/20 ,  B22F9/04 ,  C22C21/00 ,  H01F1/047 ,  H01F41/02

Abstract: A method for producing magnetic particles containing a manganese-aluminum alloy includes: mixing manganese particles, an aluminum source, an activator containing a halide, and an anti-sintering agent to obtain a mixed powder; heating the mixed powder to calorize the manganese particles by utilizing gaps between particles of the anti-sintering agent formed by the anti-sintering agent, to obtain a treated mixture containing magnetic particles containing a manganese-aluminum alloy, wherein a mass ratio of aluminum to manganese (Al/Mn) in the manganese-aluminum alloy is in a range from 25/75 to 35/65; removing the anti-sintering agent from the treated mixture to recover the magnetic particles containing the manganese-aluminum alloy.