What Is NdFeB Powder? Neodymium-Iron-Boron (NdFeB) powder is the base material for the strongest commercially available rare earth magnets. These magnets are widely used in electric motors, wind turbines, medical devices, and automotive systems, including EV drivetrains. The powder is produced via atomization or mechanical milling and requires tight particle size control for successful pressing and sintering into dense magnet components.
Why Sieving Matters
To achieve high-density compaction and precise magnetic alignment, NdFeB powders must be screened to a narrow particle size range, often between 20 and 50 microns, with specialty grades going below 20 microns. Oversized particles can reduce magnetic performance and introduce defects during the compaction or sintering process.
