Fe-Si-B-P-C熔体性质对非晶薄带质量的影响

Effect of melt properties on quality of Fe-Si-B-P-C amorphous ribbon

分别采用振荡杯法和座滴法研究了Fe-Si-B-P-C合金体系熔体黏度及表面张力随温度的变化规律,确定了黏度的温度敏感性差异最大的2个合金成分。用平面流工艺制备了该2种合金的非晶薄带,分析了薄带的厚度和贴辊面表面质量随熔体温度的变化。结果表明,非晶薄带的厚度随熔体温度的升高而近似线性减小;对于熔体黏度对温度不敏感的合金来说,熔体温度变化对薄带厚度的影响也相对较小;薄带贴辊面的气坑尺寸和数量均随熔体温度的升高先减小（减少）后增大（增多）。最后,分别从黏度及表面张力对熔潭的影响角度对实验结果进行了分析。

Temperature dependence of viscosity and surface tension for Fe-Si-B-P-C alloy melt were investigated by the oscillating cup method and the sessile drop method respectively. And the two alloys with the most difference in temperature sensitivity of viscosity were determined. Melting temperature dependence of the thickness and the surface quality in the wheel-side of amorphous ribbons produced from the above alloys by planar-flow melt spinning was analyzed. The results show that the ribbons thickness decreases linearly with increasing temperature; for the insensitive viscosity-temperature alloy, the effect of melt temperature on the ribbon thickness is relatively weak. The size and number of air pockets in the wheel-side for all the ribbons decreases first and subsequently increases with increasing temperature. In addition, the results were analyzed and discussed from the point of the influence of viscosity and surface tension on puddle.