3 ms·

Best example I know of for new magnet chemistry without rare earths is Niron Magnetics: https://www.nironmagnetics.com/ https://www.nironmagnetics.com/ https:

• londons_explore 4y ago
  > Our product roadmap climbs the ladder of performance allowing us to replace NdFeB magnets initially on the basis of price performance and ultimately on the basis of absolute performance So it sounds like they haven't yet figured out how to make a magnet as strong as a regular NeFeB magnet, but it is theoretically possible to do so. Magnet strength is one of the key inputs for motor torque per unit mass, and it seems unlikely Tesla would want to trade off much of either mass or torque for price.
  • nine_k 4y ago
    If availability of, say, neodymium becomes limited, no amount of price increase would be able to bring a sufficient quantity. It's a bad situation to.find your factory in. See the recent chip crisis.
  • beambot 4y ago
    > it seems unlikely Tesla would want to trade off much of either mass or torque for price. Tesla routinely make this tradeoff -- e.g. the Standard Range M3 uses LFP (litium iron phosphate) batteries that are cheaper but less energy dense compared the to Long Range M3 that uses a more nickel-based lithium battery that's more performant.