Effects of magnetic field annealing on magnetic properties in ultrafine crystalline Fe-Cu-Nb-Si-B alloys

Effects of magnetic field annealing on magnetic properties in ultrafine crystalline Fe-Cu-Nb-Si-B alloys

The relation between magnetic field annealing and magnetic properties in Fe-based alloys called FINEMET, composed of an ultrafine grain structure, have been studied. High-remanence-ratio B-H curves and flat B-H curves can be obtained by longitudinal-field and transverse-field annealing, respectively...

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Veröffentlicht in:IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA) 1989-09, Vol.25 (5), p.3324-3326
Hauptverfasser: Yoshizawa, Y., Yamauchi, K.
Format: Artikel
Sprache:eng
Schlagworte:
360102 - Metals & Alloys- Structure & Phase Studies
360104 - Metals & Alloys- Physical Properties
ALLOYS
Amorphous materials
ANNEALING
BORON ALLOYS
COBALT ALLOYS
COBALT BASE ALLOYS
Conductivity
COPPER ALLOYS
Core loss
CRYSTAL STRUCTURE
Crystallization
ELECTRICAL EQUIPMENT
Frequency dependence
GRAIN SIZE
HEAT TREATMENTS
IRON ALLOYS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MATERIALS SCIENCE
MATERIALS TESTING
MICROSTRUCTURE
NIOBIUM ALLOYS
Permeability
PHYSICAL PROPERTIES
Remanence
SILICON ALLOYS
SIZE
Soft magnetic materials
TESTING
TRANSFORMERS
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Beschreibung
Zusammenfassung:The relation between magnetic field annealing and magnetic properties in Fe-based alloys called FINEMET, composed of an ultrafine grain structure, have been studied. High-remanence-ratio B-H curves and flat B-H curves can be obtained by longitudinal-field and transverse-field annealing, respectively. The values of core loss and relative permeability of FINEMET alloys annealed in a magnetic field are similar to those of Co-based alloys, and they show excellent soft magnetic properties in the high-frequency range. The alloys annealed in longitudinal fields are suitable for saturable reactors and high-frequency transformers, and those annealed in transverse fields are suitable for choke coils.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.42291