| 摘要 |
The present invention addresses the problem of continuously tapping molten metal from a tapping nozzle for a long period of time by adjusting the content of Mn and S in an Fe-B-Si-C-based amorphous alloy ribbon, and this amorphous alloy ribbon is characterized by having a composition including Fe, Si, B, C, Mn, S, and unavoidable impurities, in which the amount of Si is 3.0 atomic% to 10.0 atomic%, the amount of B is 10.0 atomic% to 15.0 atomic%, and the amount of C is 0.2 atomic% to 0.4 atomic% with respect to a combined total of 100.0 atomic% of Fe, Si, B, and C, the content ratio of Mn being more than 0.12% by mass to less than 0.15% by mass, the content ratio of S being 0.0036% by mass to less than 0.0045% by mass, and the amorphous alloy ribbon having a thickness of 10 µm to 40 µm and a width of 100 mm to 300 mm. |
