POWDER MIXTURE FOR POWDER MAGNETIC CORE AND POWDER MAGNETIC CORE

摘要

One embodiment of the present invention relates to a powder mixture for a powder magnetic core, said powder mixture being characterized by: comprising an iron-based soft magnetic powder (A) that is coated with an insulating film and an iron-based soft magnetic powder (B) that is not coated with an insulating film; and by the mixture ratio of the iron-based soft magnetic powder (A) and the iron-based soft magnetic powder (B) satisfying formula (1) that is indicated below. The present invention makes it possible to achieve a powder mixture for a powder magnetic core that improves compressibility at the time of molding and that makes it possible to keep iron loss (hysteresis loss + eddy current loss) within a predetermined amount. Formula (1): 1 mass% ≤ [mass of iron-based soft magnetic powder (B)/(mass of iron-based soft magnetic powder (A) + mass of iron-based soft magnetic powder (B))] × 100 ≤ 5 mass%.