AMORPHOUS MAGNETIC CORE, MAGNETIC DEVICE, AND METHOD FOR MANUFACTURING MAGNETIC CORE

摘要

PROBLEM TO BE SOLVED: To provide: a small, inexpensive magnetic core in a complicated shape by using amorphous magnetic powder having poor moldability; a method for manufacturing the magnetic core; and a magnetic device using the magnetic core.SOLUTION: An amorphous magnetic core consists of a thermally cured molding product of a magnetic material. The magnetic material is a mixture of magnetic powder and a thermosetting binding resin. The magnetic powder is amorphous metal powder coated with an inorganic insulative material. The thermosetting binding resin is an epoxy resin including latent hardening agent. The content of the magnetic powder is 97 mass% or more and 98 mass% or less to a total amount of the magnetic powder and the thermosetting binding resin, and the content of the thermosetting binding resin is 2 mass% or more and 3 mass% or less. When cut along an arbitrary section, the magnetic core has internal pores.SELECTED DRAWING: Figure 1