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曾以卧滴法测定了表面活性元素S,Mn对液Fe表面张力的影响,并按Gibbs方程计算了S,Mn在液Fe表面的吸附值。为比较计算的吸附值和实测值,本文利用Auger电子谱仪和辉光放电发射光谱对Fe-S和Fe-Mn二元系合金进行了表面逐层分析。结果表明,Mn在合金表面沿深度的分布有一贫Mn区;Fe-S系也出现贫硫区;同时观察到,硫在表面的富集系数(C_s~s/C_b~s)较Mn约高两个数量级。这与研究Fe-S和Fe-Mn系的表面现象计算的结果相近。
The effect of surface active element S and Mn on the surface tension of liquid Fe was measured by the horizontal drop method. The adsorption values of S and Mn on the surface of liquid Fe were calculated according to the Gibbs equation. In order to compare the calculated adsorption values and measured values, surface-layer analysis of Fe-S and Fe-Mn binary alloys was performed by Auger electron spectroscopy and glow discharge emission spectroscopy. The results show that the distribution of Mn along the depth of the alloy surface has a Mn depleted zone; the Fe-S system also shows a sulfur-depleted zone; meanwhile, the enrichment coefficient of sulfur (C_s ~ s / C_b ~ s) Two orders of magnitude. This is similar to the calculation of the surface phenomena of Fe-S and Fe-Mn systems.