New Fe-based soft magnetic alloys composed of ultrafine grain structure

Journal Article · Tue Nov 15 00:00:00 EST 1988 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.342149· OSTI ID:6749308

Yoshizawa, Y; Oguma, S; Yamauchi, K

The magnetic properties of Fe-Si-B-M (M: additives) alloys prepared by annealing amorphous alloys made by the single roller method over their crystallization temperature have been investigated for development of new Fe-based soft magnetic alloys. Excellent soft magnetic properties were obtained by adding the two elements Cu and Nb to Fe-Si-B alloys. It was found that these new alloys, called ''FINEMET,'' have an ultrafine grain structure composed of bcc Fe solid solution. They are suitable for many kinds of magnetic components such as saturable reactors, choke coils, and transformers, because they have superior soft magnetic properties and a high saturation flux density, and because different types of B-H hysteresis loops are obtained by magnetic field annealing.

• Research Organization: Magnetic and Electronic Materials Research Laboratory, Hitachi Metals, Ltd., 5200 Mikajiri, Kumagaya-shi, Saitama-ken 360, Japan
• OSTI ID: 6749308
• Journal Information: J. Appl. Phys.; (United States), Vol. 64:10
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER ALLOYS
MAGNETIC PROPERTIES
IRON BORIDES
NIOBIUM ALLOYS
SILICON BORIDES
ADDITIVES
ANNEALING
COPPER ADDITIONS
HYSTERESIS
IRON BASE ALLOYS
NIOBIUM ADDITIONS
SYNTHESIS
ALLOYS
BORIDES
BORON COMPOUNDS
HEAT TREATMENTS
IRON ALLOYS
IRON COMPOUNDS
PHYSICAL PROPERTIES
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties