METHOD AND SYSTEMS FOR UNIFORM DISTRIBUTION OF ADDITIVE DOMAINS IN THE GRAIN BOUNDARY OF MAGNETS
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Sep 22, 2023
filing date -
Sep 22, 2023
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Abstract
A method of incorporating additive domains in a rare earth magnet, a system for incorporating additive domains in a rare earth magnet, and a traction motor including a rare earth magnet. Inert gas and a plurality of coarse neodymium-iron-boron (NdFeB) particles are introduced into the chamber of a jet mill. The plurality of coarse NdFeB particles impact each other producing a plurality of refined NdFeB particles. The plurality of refined NdFeB particles also impact a target including a target material and transfer a portion of the target material onto a surface of the refined NdFeB particles. The plurality of refined NdFeB particles including the target material are separated from the plurality of coarse NdFeB particles and collected to form a rare earth magnet.
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