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Wednesday, November 29, 2023 1:32:44 AM
https://spectrum.ieee.org/permanent-magnet-motor
"That was how the media reported it on 8 November, after GM Ventures, Stellantis Ventures, and several other investors disclosed a US $33 million infusion into Niron’s iron-nitride magnet. At the same time, GM and Niron announced that they had agreed to form a strategic partnership to codevelop rare-earth-free permanent magnets “that can be used in future GM EVs.”
However, many experts in magnetics are doubtful. They question whether it’s possible to mass-manufacture an economical magnet free of rare earths that is strong and tough enough for EV propulsion.
“There’s a compound there,” says Alexander Gabay, a researcher at the University of Delaware, referring to the iron nitride in the magnets being developed by Niron. But “it’s not intrinsically capable of making a good magnet. It’s that simple. This is well-known in the community.”
https://spectrum.ieee.org/permanent-magnet-motor
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