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US 12,224,623 B2Granted
Electric motor
AssigneeSiemens Aktiengesellschaft
InventorsStefan Lampenscherf, Gotthard Rieger, Michael Krispin
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Abstract
Various embodiments of the teachings herein include an electric motor. In some embodiments, the motor includes: 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. The structural material comprises ceramic fibers. A content of the ceramic fibers is between 0.2% and 10% by volume. An aspect ratio of the ceramic fibers is less than 0.1.
Claims15
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.
6 more elements
Dependencies are inferred from the claim text.