Surface tension of liquid Al–Cu–Ag ternary alloys
Surface tension of liquid Al–Cu–Ag ternary alloys
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DOI：
10.1007/s10853-010-4512-6
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发表时间：
2010-04
影响因子：
4.5
通讯作者：
J. Brillo;Y. Plevachuk;I. Egry
中科院分区：
文献类型：
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作者：
J. Brillo;Y. Plevachuk;I. Egry
用电磁悬浮技术对液态Al-Cu-Ag合金的表面张力数据进行了接触式测量。数字CMOS照相机（400 fps）记录振荡液体样品的图像序列，并且从频谱分析确定表面张力。在熔点以上的温度下获得数据。样品涵盖了广泛的成分。在所有情况下，表面张力可以被描述为具有负斜率的温度的线性函数。的数据进行了比较，热力学模型计算使用的理想和亚正规溶液近似。结果发现，除了样品的组成是接近的二元边缘相之一，三元合金的表面张力可以描述的理想溶液模型。
Surface tension data of liquid Al–Cu–Ag ternary alloys have been measured contactlessly using the technique of electromagnetic levitation. A digital CMOS-camera (400 fps) recorded image sequences of the oscillating liquid sample and the surface tension was determined from an analysis of the frequency spectra. Data were obtained at temperatures above the melting point. Samples covered a broad range of compositions. In all cases, the surface tensions could be described as linear functions of temperature with a negative slope. The data were compared to thermodynamic model calculations using the ideal- and subregular solution approximation. It was found that, apart from samples where the composition is close to one of the binary margin phases, the surface tensions of the ternary alloys can be described by the ideal solution model.