AMORPHOUS POWDER CORES AND THEIR PREPARATION METHOD

摘要

This invention relates to a high-frequency characteristic and forming a fine amorphous powder core and a method of manufacturing the same sex. Production process according to the present invention is Fe-Si-B-based steps for producing the amorphous powder, electroless plating by the Fe-Si-B based amorphous powder comprising a uniform coating on the copper surface, the copper-coated Fe-Si oxidizes the -B based amorphous powder and to form the copper oxide on the surface, the copper oxide by forming a Fe-Si-B based amorphous powder formed on the surface comprises the step of manufacturing the core. The Fe-Si-B based amorphous powder of copper oxide is formed on the surface according to the invention enables the forming of an amorphous powder that can not be molded to the plastic deformation does not increase the binding of the powder each other by roughening the surface of the powder, the surface to improve the electrical insulation between the amorphous powder of copper oxide formed by a small change in the magnetic permeability in the high frequency band, the magnetic core losses can be made small amorphous powder core.