SOFT MAGNETIC MATERIAL AND DUST CORE PRODUCED THEREFROM

摘要

A soft magnetic material contains a plurality of composite magnetic particles (30) each including a metal magnetic particle (10) and an insulating coating film (20) covering the metal magnetic particle. Each of the plurality of composite magnetic particles has a ratio R m/c of a maximum diameter to a circle-equivalent diameter of more than 1.15 and not more than 1.35. The insulating coating film (20) is composed of a thermosetting organic material and has a pencil hardness of 5H or higher after thermosetting. With this material, the eddy current loss can be reduced, and a compact with a high strength can be formed.