MANUFACTURING METHOD OF COMPOSITE COATED SOFT MAGNETIC METAL POWDER, COMPOSITE COATED SOFT MAGNETIC METAL POWDER, AND POWDER MAGNETIC CORE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain soft magnetic metal powder of high specific resistance, low loss and high magnetic flux density while using low-priced raw materials.;SOLUTION: A manufacturing method of composite coated soft magnetic metal powder includes: a mixing step of weighing and mixing carbon powder and borosilicate glass powder, respectively, in such a manner that the quantity of carbon powder to be added to iron oxide powder becomes 2.3 or more and 3.4 or less in mol% and the quantity of borosilicate glass powder to be added to iron oxide powder in mass 100 becomes 0.05 or more and 20 or less in mass%; and a step of performing heat treatment on obtained mixed powder at a temperature of 1000°C or higher and 1600°C or lower in a non-oxidation atmosphere containing nitrogen.;COPYRIGHT: (C)2015,JPO&INPIT