US 12,230,426 B2
Soft magnetic powder composition for inductor core and method of manufacturing inductor core using the composition
Deuk Kyu Hwang, Yongin-si (KR); Hee Hyuk Lee, Yongin-si (KR); Kee Yang Lee, Yongin-si (KR); Suk Yi Kang, Seoul (KR); and Tae Hyun Kim, Ansan-si (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR); and ELECTRO M CO., LTD., Ansan-si (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR); and ELECTRO M CO., LTD., Ansan-si (KR)
Filed on Dec. 14, 2022, as Appl. No. 18/081,094.
Claims priority of application No. 10-2022-0059425 (KR), filed on May 16, 2022.
Prior Publication US 2023/0368951 A1, Nov. 16, 2023
Int. Cl. H01F 1/147 (2006.01); B22F 1/00 (2022.01); B22F 1/052 (2022.01); B22F 1/142 (2022.01); B22F 1/16 (2022.01); B22F 3/02 (2006.01); B22F 3/24 (2006.01); B22F 9/08 (2006.01); H01F 27/255 (2006.01); H01F 41/02 (2006.01)
CPC H01F 1/14733 (2013.01) [B22F 1/052 (2022.01); B22F 1/09 (2022.01); B22F 1/142 (2022.01); B22F 1/16 (2022.01); B22F 3/02 (2013.01); B22F 2003/248 (2013.01); B22F 2009/0824 (2013.01); B22F 2301/35 (2013.01); B22F 2302/253 (2013.01); B22F 2302/256 (2013.01); B22F 2304/10 (2013.01); B22F 2998/10 (2013.01); H01F 27/255 (2013.01); H01F 41/0246 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A soft magnetic powder composition for an inductor core, comprising 60 to 80 wt % Fe—Ni alloy powder, 20 to 25 wt % Fe—Si alloy powder, and 10 to 30 wt % Fe—Si—Al alloy powder based on a total alloy powder,
wherein each of the Fe—Ni alloy powder, the Fe—Si alloy powder, and the Fe—Si—Al alloy powder are coated with an insulating material that includes silicate.