Verfahren zur Herstellung von Metallpulvern mit Körnern im Nanomaßstab und einer hervorragenden Hochfrequenzcharakteristik sowie Verfahren zur Herstellung eines Hochfrequenz-Weichmagnetkerns unter Verwendung solcher Pulver

摘要

An amorphous soft magnetic core having an excellent high-frequency characteristic is manufactured by: performing a thermal treatment of iron-based amorphous metal ribbons produced by using a rapid solidification process to then be converted into nano-scale grain metal ribbons; and crushing the nano-scale grain metal ribbons to obtain nano-scale grain metal powders. Manufacture of an amorphous soft magnetic core having an excellent high-frequency characteristic comprises: performing a thermal treatment of iron-based amorphous metal ribbons produced by using a rapid solidification process (RSP) to then be converted into nano-scale grain metal ribbons; crushing the nano-scale grain metal ribbons to obtain nano-scale grain metal powders; classifying the nano-scale grain metal powders to then be mixed into a distribution of powder particles, having an optimal uniform composition; mixing the mixed nano-scale grain metal powders with a binder, and forming a core; and annealing the formed core to then coat the core with an insulating resin.