Fe-BASED AMORPHOUS ALLOY, AND DUST CORE OBTAINED USING Fe-BASED AMORPHOUS ALLOY POWDER

摘要

[Object] To provide an Fe-based amorphous alloy having a glass transition temperature (Tg) and capable of exhibiting a high saturation magnetic flux density Bs, and a dust core made using a powder of the Fe-based amorphous alloy.;[Solution] The compositional formula of an Fe-based amorphous alloy of the present invention is (Fe_100-a-b-c-deCr_aP_bC_cB_dSi_e (a, b, c, d, and e are in terms of at%), where 0 at % ≤ a ≤ 1.9 at%, 1.7 at % ≤ b ≤ 8.0 at %, 0 at% ≤ e ≤ 1.0 at %, an Fe content (100-a-b-c-d-e) is 77 at % or more, 19 at % ≤ b + c + d + e ≤ 21.1 at%, 0.08 ≤ b/(b + c + d) ≤ 0.43, 0.06 ≤ c/(c + d) ≤ 0.87, and the Fe-based amorphous alloy has a glass transition temperature (Tg).