HIGH-STRENGTH HIGH-RESISTIVITY LOW LOSS COMPOSITE SOFT MAGNETIC MATERIAL, ITS METHOD FOR MANUFACTURING, AND ELECTROMAGNETIC CIRCUIT COMPONENT

摘要

PROBLEM TO BE SOLVED: To provide a high-strength high-resistivity low loss composite soft magnetic material.;SOLUTION: Mg-containing oxide-coated soft magnetic particles, each of which has an Fe-based soft magnetic metal particle and an Mg-containing oxide film coated on the surface of the soft magnetic metal particle, are combined through an insulating grain layer composed of a composite compound obtained by baking. At least Fe, a bivalent metal, Mg, and O are diffused in the grain layer, and the grain layer is composed mainly of a composite oxide of Fe, the bivalent metal, and Mg. A high-concentration region and a low-concentration region of the bivalent metal exist in the grain layer positioned between the Mg-containing oxide-coated soft magnetic particles, and a high-concentration region and a low-concentration region of Fe exist in the grain layer.;COPYRIGHT: (C)2010,JPO&INPIT