Abstract The influence of melt overheating on the viscosity of the melt and surface quality of the Fe78Si9B13 melt-spun ribbons have been studied by using oscillating vessel viscometry, X-ray diffraction, transmission electron microscopy, and field emission scanning electron microscopy. A critical temperature Tc (about 1350 °C) of the melt transformation was determined via viscosity measurements during overheating and subsequent cooling processes. The Fe78Si9B13 amorphous ribbons were produced through planar flow melt spinning in the temperature range of 1300–1550 °C. A detailed analysis of overheating effects on the melt viscosity and surface features of the as-spun ribbons were performed to rationalize the correlation between the melt state and surface quality of the ribbons. It was found that the enhanced homogeneity of the melt can be achieved by the overheating treatment higher than the critical temperature, which in turn improves the surface quality and thickness stability of the Fe78Si9B13 melt-spun ribbons.

中文翻译：

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熔体过热对Fe78Si9B13熔纺薄带表面质量和厚度稳定性的改善

摘要 采用振荡容器粘度计、X 射线衍射、透射电子显微镜和场发射扫描电子显微镜研究了熔体过热对熔体粘度和 Fe78Si9B13 熔纺带表面质量的影响。在过热和随后的冷却过程中通过粘度测量确定熔体转变的临界温度 Tc（约 1350°C）。Fe78Si9B13 非晶带是通过在 1300-1550°C 的温度范围内通过平面流动熔体纺丝生产的。对过热对初纺带的熔体粘度和表面特征的影响进行了详细分析，以使熔体状态与带表面质量之间的相关性合理化。