Theoretical temperature-dependence surface tension of pure liquid gold

被引：12
|
作者：
Agra, Fathi [1 ]
Ayyad, Ahmed [1 ]
机构：
[1] Hebron Univ, Dept Chem, Fac Sci & Technol, Hebron, West Bank, Israel
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 14期
关键词：
Surface tension; Gold; Temperature dependence; THERMOPHYSICAL PROPERTIES; THERMAL-EXPANSION; METALS; COEFFICIENT; DENSITY;
D O I：
10.1016/j.matlet.2011.04.063
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A calculation, based on statistical thermodynamics, of the surface tension of pure liquid gold, in the temperature range 1337-1653 K, is described. The calculated surface tension of liquid gold was found to be 1100 mJ/m(2) that agrees well with the reported experimental value (1149 mJ/m(2)). Results reveal that below 1480 K, the surface excess entropy changes by one order of magnitude (0.0151 mJ/m(2)K) as compared to the value above this temperature (0.1773 mJ/m(2)K), and thus predicting a structural changes at the surface of pure molten gold at high temperature. (C) 2011 Elsevier B.V. All rights reserved.
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页码：2124 / 2126
页数：3
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