Title :
High-frequency behavior of magnetic composites based on FeSiBCuNb particles for power-electronics
Author :
Alves, F. ; Ramiarinjaona, C. ; Bérenguer, S. ; Lebourgeois, R. ; Waeckerlé, T.
Author_Institution :
LESiR/SATIE, Ecole Normale Superieure de Cachan, France
fDate :
9/1/2002 12:00:00 AM
Abstract :
The objective of this work is to synthesize low-permeability and low-core-loss material for magnetic components used in switch-mode power supplies (SMPS). We depict the process for producing nanocrystalline FeSiBCuNb flake composites (NFC). Permeability from 20 to 60 can be achieved by controlling both particle size and compacting pressure. NFC composites are magnetically superior to the competing Fe and Ni-Fe composites. For guidance, at 500 kHz, core loss in NFC is two and ten times lower, respectively, than in Ni-Fe and Fe composites.
Keywords :
amorphous magnetic materials; annealing; boron alloys; copper alloys; densification; eddy current losses; ferromagnetic materials; filled polymers; iron alloys; magnetic particles; magnetic permeability; melt spinning; nanostructured materials; niobium alloys; particle size; powder cores; powder metallurgy; silicon alloys; skin effect; soft magnetic materials; switched mode power supplies; FeSiBCuNb; annealing; compacting pressure; core losses; epoxy binder; high-frequency losses; low-core-loss material; low-permeability material; magnetic components; magnetic powders; mechanical orientation; melt-spun ribbons; milling; nanocrystalline flake composites; particle size; powder cores; pressing; residual amorphous matrix; skin effect; soft magnetic composite; switch-mode power supplies; Composite materials; Iron; Magnetic materials; Magnetostriction; Milling; Mortar; Nanostructured materials; Permeability; Powders; Switched-mode power supply;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802420
