Surface tension of superheated and undercooled liquid Co–Si alloy
Surface tension of superheated and undercooled liquid Co–Si alloy
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DOI：
10.1063/1.1808880
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发表时间：
2004-10
影响因子：
4
通讯作者：
H. Wang;W. Yao;C. Cao;B. Wei
中科院分区：
文献类型：
--
作者：
H. Wang;W. Yao;C. Cao;B. Wei
研究了过热和过冷液态Co 25 wt.%采用电磁振荡滴法对硅合金进行了测量。实验温度范围为1384 ~ 2339 K，最大过冷度为223 K（0.14TL）。25 wt.%液态钴的表面张力Si合金在液相线温度1607 K时的温度系数为1.604Nm−1，温度系数为−4.0×10− 4 Nm − 1 K −1。在前人对纯Co和纯Si研究的基础上，提出了一个二元Co-Si合金系表面张力的预测公式。对25 wt.%液态Co的粘度、溶质扩散系数、密度等热物性进行了测试还通过相关的理论模型推导出了Si合金。
The surface tension of superheated and undercooled liquid Co 25wt.% Si alloy was measured by an electromagnetic oscillating drop method. The experimental temperature regime was from 1384 to 2339K and a maximum undercooling of 223K (0.14TL) was achieved. The surface tension of liquid Co 25wt.% Si alloy is 1.604Nm−1 at the liquidus temperature of 1607K, and its temperature coefficient is −4.0×10−4Nm−1K−1. On the basis of previous research results of pure Co and Si, an expression is developed to predict the surface tension of binary Co–Si alloy system. The other thermophysical properties, such as the viscosity, the solute diffusion coefficient, and the density of liquid Co 25wt.% Si alloy are also derived by the relevant theoretical models.