FE-BASED AMORPHOUS ALLOY, DUST CORE FORMED USING THE FE-BASED AMORPHOUS ALLOY, AND DUST CORE WITH EMBEDDED COIL

摘要

[Object] An object is to provide an Fe-based amorphous alloy used for a powder core and/or a coil encapsulated powder core having, in particular, a low glass transition temperature (Tg), a high conversion vitrification temperature (Tg/Tm), and excellent magnetization and corrosion resistance. [Solution] An Fe-based amorphous alloy of the present invention has a composition formula represented by Fe 100-a-b-c-x-y-z-t Ni a Sn b Cr c P x C y B z Si t , and in the formula, 0 at%‰¤a‰¤10 at%, 0 at %‰¤b‰¤3 at%, 0 at%‰¤c‰¤6 at%, 6.8 at%‰¤x‰¤10.8 at%, 2.2 at%‰¤y‰¤9.8 at%, 0 at%‰¤z‰¤4.2 at%, and 0 at%‰¤t‰¤3.9 at% hold. Accordingly, an Fe-based amorphous alloy used for a powder core and/or a coil encapsulated powder core having a low glass transition temperature (Tg), a high conversion vitrification temperature (Tg/Tm), and excellent magnetization and corrosion resistance can be manufactured.