MANUFACTURING METHOD OF POWDER MAGNETIC CORE

PROBLEM TO BE SOLVED: To provide a powder magnetic core having a property superior in DC superposition with a smaller loss.SOLUTION: The powder magnetic core is constituted of Fe-based amorphous alloy, a ribbon of which is crushed into a powder and molded, and which is subjected to a heat treatment....

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	YOSHIZAWA KATSUTO, TERAKADO YUTARO
Format:	Patent
Sprache:	eng ; jpn
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a powder magnetic core having a property superior in DC superposition with a smaller loss.SOLUTION: The powder magnetic core is constituted of Fe-based amorphous alloy, a ribbon of which is crushed into a powder and molded, and which is subjected to a heat treatment. A bcc-Fe phase is deposited by the heat treatment. Assuming the (110) peak intensity of the bcc-Fe crystal in the vicinity of 2 =45° as Ic; and assuming the intensity of a main halo peak of the amorphous phase as Ia, the intensity ratio Ic/Ia of the powder magnetic core is 1.1≤Ic/Ia≤3.6. The crushed powder has an average thickness 30-60 μm, and is preferably coated with silica coating film formed thereover.SELECTED DRAWING: Figure 1 【課題】より低損失で優れた直流重畳特性を有する圧粉磁心を提供する。【解決手段】 Fe基アモルファス合金薄帯を粉砕した粉砕粉を成形し、熱処理してなる圧粉磁心において、前記熱処理によりbcc-Fe相を析出させ、2θ= 45?付近の前記bcc-Fe結晶の(110)ピークの強度をIcとし、アモルファス相のメインのハローピークの強度をIaとした時、強度比Ic / Iaが1.1 ≦ Ic / Ia ≦ 3.6である圧粉磁心。前記粉砕粉は、平均厚み30μｍ〜60μｍで、シリカ皮膜を形成したものであることが望ましい。【選択図】図１