US 12,033,777 B2
Amorphous nanocrystalline soft magnetic material, preparation method therefor and use thereof, amorphous ribbon material, amorphous nanocrystalline ribbon material, and amorphous nanocrystalline magnetic sheet
Yangyang Liu, Jinhua (CN); and Yaqi Fu, Jinhua (CN)
Assigned to HENGDIAN GROUP DMEGC MAGNETICS CO., LTD, Jinhua (CN)
Appl. No. 17/624,979
Filed by HENGDIAN GROUP DMEGC MAGNETICS CO., LTD, Jinhua (CN)
PCT Filed Jun. 9, 2020, PCT No. PCT/CN2020/095009
§ 371(c)(1), (2) Date Jan. 5, 2022,
PCT Pub. No. WO2021/012820, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 201910656298.4 (CN), filed on Jul. 19, 2019.
Prior Publication US 2022/0293314 A1, Sep. 15, 2022
Int. Cl. H01F 1/153 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/52 (2006.01); C22C 33/00 (2006.01); C22C 45/02 (2006.01)
CPC H01F 1/15333 (2013.01) [C21D 6/008 (2013.01); C21D 8/0205 (2013.01); C21D 8/0236 (2013.01); C21D 9/52 (2013.01); C22C 33/003 (2013.01); C22C 45/02 (2013.01); H01F 1/15341 (2013.01); C22C 2200/02 (2013.01); C22C 2202/02 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An amorphous nanocrystalline soft magnetic material, comprising an amorphous matrix phase, a nanocrystalline phase distributed in the amorphous matrix phase, and a fine crystalline particle distributed in the amorphous matrix phase and the nanocrystalline phase, wherein the amorphous matrix phase comprises Fe, Si and B; the fine crystalline particle comprises metal carbides; and the amorphous nanocrystalline soft magnetic material comprises Fe, Si, B, P and Cu;
wherein the fine crystalline particle has an average particle size of less than or equal to 10 nm and the nanocrystalline phase has an average particle size of less than or equal to 30 nm;
wherein in the amorphous nanocrystalline soft magnetic material, the nanocrystalline phase has an atomic percentage of 50 at % to 70 at %; and
in the amorphous nanocrystalline soft magnetic material, the fine crystalline particle has an atomic percentage of 0.1 at % to 2 at %.