US 12,406,784 B2
Method of producing bonded magnet comprising SmFeN-based anisotropic magnetic powder
Hisashi Maehara, Itano-gun (JP)
Assigned to NICHIA CORPORATION, Anan (JP)
Filed by NICHIA CORPORATION, Anan (JP)
Filed on Jun. 10, 2022, as Appl. No. 17/806,376.
Claims priority of application No. 2021-097489 (JP), filed on Jun. 10, 2021; and application No. 2022-088565 (JP), filed on May 31, 2022.
Prior Publication US 2022/0406496 A1, Dec. 22, 2022
Int. Cl. H01F 1/059 (2006.01); B22F 9/04 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01)
CPC H01F 1/059 (2013.01) [C22C 33/0235 (2013.01); C22C 38/001 (2013.01); C22C 38/005 (2013.01); C22C 2202/02 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of producing a bonded magnet, the method comprising:
preparing a SmFeN-based anisotropic magnetic powder before dispersing comprising Sm, Fe, W, and N, and
dispersing the SmFeN-based anisotropic magnetic powder using a resin-coated metal media or a resin-coated ceramic media to obtain a SmFeN-based anisotropic magnetic powder, and
mixing the SmFeN-based anisotropic magnet powder and a resin,
wherein the media has a diameter of at least 2 mm and not more than 100 mm.