PROCEDE DE PREPARATION D'UN ALLIAGE MAGNETIQUE AMORPHE

A.PROCEDE DE PREPARATION D'UN ALLIAGE MAGNETIQUE AMORPHE.B.PROCEDE CARACTERISE EN CE QU'ON EFFECTUE UN TRAITEMENT THERMIQUE OU DE RECUIT DE L'ALLIAGE AMORPHE A UNE TEMPERATURE INFERIEURE A LA TEMPERATURE DE CRISTALLISATION TCRY EN FAISANT TOURNER L'ALLIAGE PAR RAPPORT A UN CHAMP...

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1. Verfasser:	YOSHIMI MAKINO, YOSHITAKA OCHIAI, SATORU UEDAIRA, KAZUHIDE HOTAI, KOICHI ASO ET MASATOSHI HAYAKAWA
Format:	Patent
Sprache:	fre
Schlagworte:	ALLOYS CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:	A.PROCEDE DE PREPARATION D'UN ALLIAGE MAGNETIQUE AMORPHE.B.PROCEDE CARACTERISE EN CE QU'ON EFFECTUE UN TRAITEMENT THERMIQUE OU DE RECUIT DE L'ALLIAGE AMORPHE A UNE TEMPERATURE INFERIEURE A LA TEMPERATURE DE CRISTALLISATION TCRY EN FAISANT TOURNER L'ALLIAGE PAR RAPPORT A UN CHAMP MAGNETIQUE A UNE VITESSE DE ROTATION.C.L'INVENTION S'APPLIQUE A LA FABRICATION DE BANDES MAGNETIQUES. A method of manufacturing an amorphous alloy involves thermally treating or annealing the amorphous alloy material at a temperature lower than the crystallization temperature thereof through rotation of the alloy material relative to a magnetic field at a velocity so as to meet the following relationship: R tau O=0.5n where R is the number of revolutions per minute, tau O is an average time required to cause the amorphous alloy material to reach a thermal equilibrium state of induced magnetic anisotropy, and n is an integer of at least 1. The amorphous alloy thus prepared possesses a high permeability and a high saturated magnetic flux so that it is suitable as a soft magnetic core material, such a magnetic heads.