Method for manufacturing metal magnetic particles, inductors, metal magnetic particles, and method for manufacturing metal magnetic cores

摘要

PROBLEM TO BE SOLVED: To produce metal magnetic particles and inductors having excellent insulating properties and DC superimposition characteristics, metal magnetic particles capable of obtaining metal magnetic particles having excellent insulating properties and DC superimposing characteristics, and insulating properties and DC superimposing characteristics. To provide a method for manufacturing a metal magnetic core capable of obtaining an excellent metal magnetic core. SOLUTION: The metal magnetic particles (1) are provided with an oxide layer on the surface of an alloy particle (10) containing Fe and Si, and the oxide layer is a first oxide from the alloy particle side. In the line analysis of the element content using the scanning transmission electron microscope-energy dispersion type X-ray analysis, which has a layer (20), a second oxide layer (30) and a third oxide layer (40), the above The first oxide layer (20) is a layer having a maximum amount of Si, and the second oxide layer (30) is a layer having a maximum amount of Fe, and the third oxide layer (30). 40) is a metal magnetic particle (1), which is a layer having a maximum amount of Si. [Selection diagram] Fig. 1