US 12,224,623 B2
Electric motor
Stefan Lampenscherf, Poing (DE); Gotthard Rieger, Munich (DE); and Michael Krispin, Vaterstetten (DE)
Assigned to SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
Appl. No. 17/928,480
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed Apr. 23, 2021, PCT No. PCT/EP2021/060730
§ 371(c)(1), (2) Date Nov. 29, 2022,
PCT Pub. No. WO2021/244803, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 10 2020 207 060.1 (DE), filed on Jun. 5, 2020; and application No. 10 2020 207 625.1 (DE), filed on Jun. 19, 2020.
Prior Publication US 2023/0208212 A1, Jun. 29, 2023
Int. Cl. H02K 1/02 (2006.01); B22F 3/04 (2006.01); B22F 3/10 (2006.01); H01F 1/14 (2006.01)
CPC H02K 1/02 (2013.01) [B22F 3/04 (2013.01); B22F 3/10 (2013.01); H01F 1/14 (2013.01); B22F 2207/13 (2013.01); H02K 2213/03 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electric motor comprising:
a stator; and
a moving component comprising an iron-based soft-magnetic structural material including crystallites of a ferromagnetic iron-based alloy separated by grain boundaries,
wherein there is interlayer-free contact between the crystallites at grain boundaries; and
wherein the structural material comprises ceramic fibers;
wherein a content of the ceramic fibers is between 0.2% and 10% by volume; and
an aspect ratio of the ceramic fibers is less than 0.5.