PRESSED POWDER MAGNETIC CORE MATERIAL, PRESSED POWDER MAGNETIC CORE, AND PRODUCTION METHOD THEREOF

To provide a pressed powder magnetic material having excellent work safety during production of a pressed powder magnetic core and imposing less environmental burden; a pressed powder magnetic core having a high magnetic flux density, a high magnetic permeability, a low iron loss, and excellent mech...

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Bibliographische Detailangaben
Hauptverfasser:	OOHIRA, Kouya, KAKO, Noritaka
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BASIC ELECTRIC ELEMENTS CASTING CHEMISTRY ELECTRICITY FERROUS OR NON-FERROUS ALLOYS INDUCTANCES MAGNETS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	To provide a pressed powder magnetic material having excellent work safety during production of a pressed powder magnetic core and imposing less environmental burden; a pressed powder magnetic core having a high magnetic flux density, a high magnetic permeability, a low iron loss, and excellent mechanical strength; and a production method thereof. The pressed powder magnetic core material contains a granulation binder, a soft magnetic powder in which an insulating coating film is formed on the particle surface, and a glass frit whose softening point is a temperature being at least 100° C. lower than a magnetic annealing temperature; the soft magnetic powder being an iron-based amorphous alloy powder, the glass frit being contained in an amount of 0.3 to 1.0% by mass, the granulation binder being a polyvinyl alcohol having a degree of polymerization of 1000 or less and a degree of saponification of 50 to 100% by mole.