DUST CORE

摘要

Provided is a dust core having exceptional corrosion resistance while ensuring high electric resistance and strong insulating properties. The present invention is a dust core that includes Fe-M (where M is Al or Cr) alloy particles, wherein the alloy particles are bonded by an oxide phase in which the M element is concentrated, and part of the surface of the dust core has a layered oxide which is a multilayered structure and in which Fe is the primary component.