LAUSR

Abstract A high- B s amorphous alloy with the base composition Fe 83 B 11 P 3 Si 2 C 1 was used to study the effects of fluxing purification on amorphous forming ability and magnetic properties of the alloy prepared with raw materials in industrialization. By using fluxing purification, the surface crystallization was suppressed and fully amorphous Fe 83 B 11 P 3 Si 2 C 1 ribbons with a maximum thickness of 48 μm were successfully achieved by using an industrial process and materials. The amorphous ribbons made with industrial-purified alloys exhibit excellent magnetic properties, containing high- B s of 1.65 T, low H c of 2.0 A/m, and high μ e of 9.7 × 10 3 at 1 kHz. Impurities in the melting alloys exist in three forms and have different effluences on magnetic properties. The surface crystallization was triggered by the impurities which exist as high melting point inclusions serving as nuclei. Thus, fluxing purification is a feasible way for industrialization of high- B s FeBPSiC amorphous alloys.