US 12,338,514 B2
Alloy powder, nanocrystalline powder and magnetic core
Akiri Urata, Sendai (JP); Yosuke Imano, Sendai (JP); Makoto Yamaki, Sendai (JP); Naoto Onishi, Sendai (JP); Masato Kuno, Sendai (JP); Takuya Takashita, Tokyo (JP); and Makoto Nakaseko, Tokyo (JP)
Assigned to TOKIN CORPORATION, Shiroishi (JP)
Filed by TOKIN CORPORATION, Shiroishi (JP)
Filed on Sep. 19, 2023, as Appl. No. 18/369,988.
Application 18/369,988 is a division of application No. 17/946,161, filed on Sep. 16, 2022, granted, now 11,866,810.
Claims priority of application No. 2021-154591 (JP), filed on Sep. 22, 2021.
Prior Publication US 2024/0011134 A1, Jan. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C22C 38/02 (2006.01); B22F 1/054 (2022.01); B82Y 30/00 (2011.01); C22C 38/00 (2006.01); C22C 38/16 (2006.01); H01F 41/02 (2006.01)
CPC C22C 38/02 (2013.01) [B22F 1/054 (2022.01); B82Y 30/00 (2013.01); C22C 38/002 (2013.01); C22C 38/16 (2013.01); H01F 41/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An alloy powder comprising particles, wherein:
the particles include specific particles;
each of the specific particles has a surface layer on which a divided trace is formed, the divided trace being a mark at which molten alloy is divided; and
the divided trace is a combination of a crater structure and a hill-like ridge aggregate structure located around the crater structure, the hill-like ridge aggregate structure being an aggregate of a plurality of hill-like ridges.