Korean researchers solve the thick-magnet coercivity problem with a sandwich-structured grain boundary diffusion process
Nd-Fe-B magnets have a scaling problem that limits high-power EV motor design: the grain boundary diffusion process that gives them high-temperature coercivity only works well near the surface. As magnets get thicker to handle higher torque and power, the core degrades while the exterior performs, meaning the interior of aContinue Reading












