Application of a thermodynamic database to the calculation of surface tension for iron‐base liquid alloys
Application of a thermodynamic database to the calculation of surface tension for iron‐base liquid alloys
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DOI：
10.1002/srin.199400921
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Toshihiro Tanaka;T. Iida
中科院分区：
文献类型：
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作者：
Toshihiro Tanaka;T. Iida
本文讨论了以巴特勒方程为基础的液态合金表面张力的热力学模型。在合金中，其中组分的活性在很大程度上偏离拉乌尔定律，计算出的表面张力被发现是受表面相中的配位数的比例的选择，在体相中。在此基础上，利用考夫曼建立的热力学数据库计算了液态Fe-Al，Fe-Co，Fe-Cr，Fe-Mn，Fe-Mo，Fe-Ni，Fe-Si，Fe-Ti和Fe-W二元合金以及液态Fe-Cr-Ni三元合金的表面张力。计算结果再现了迄今为止报道的那些合金中表面张力的浓度依赖性，但它们的绝对值取决于纯元素表面张力值的选择
Thermodynamic models based on Butler's equation for surface tension of liquid alloys has been discussed. In alloys, in which activities of components deviate largely from Raoult's law, the calculated surface tensions are found to be affected by the selection of the ratio of the coordination number in the surface phase to that in the bulk phase. Then, the surface tension of liquid Fe-Al, Fe-Co, Fe-Cr, Fe-Mn, Fe-Mo, Fe-Ni, Fe-Si, Fe-Ti and Fe-W binary alloys and liquid Fe-Cr-Ni ternary alloys have been calculated from thermodynamic data in a database constructed by Kaufman. The calculated results reproduce the concentration dependence of the surface tension in those alloys reported so far, but their absolute values are dependent upon the selection of surface tension values for pure elements