Fe-Si ALLOY POWDER CORES AND FABRICATION PROCESS THEREOF

摘要

Disclosed is an SMD (surface mounting device) core using Fe-Si alloy powder and fabrication method thereof, by which excellent magnetic properties of the SMD core appear in radio frequency band, the SMD core having saturated magnetic flux density and effective magnetic permeability (or inductance) better than those of the previous SMD cores such as pure ion, Sendust (Fe84Si10Al6), and the like can be fabricated, and the new SMD core can be mass-produced with low process or raw material costs. The present invention includes a step: (a) of preparing a binder solutin by dissolving a binder in an organic solvent or water; a step (b) of preparing a composite particle powder by coating the binder solution on a Fe-Si alloy powder surface, and a step (c) of molding the composite particle powder.