A molecular dynamics simulation on surface tension of liquid Ni and Cu

被引:15
作者
Hou, H. Y. [1 ]
Chen, G. L. [1 ,2 ]
Chen, G. [1 ]
Shao, Y. L. [1 ]
机构
[1] Nanjing Univ Sci & Technol, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China
[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
关键词
Molecular dynamics; Surface tension; Liquid metal; Nickel; Copper; TEMPERATURE-COEFFICIENT; CORRESPONDING STATES; METALS; PREDICTION; ALLOYS; LAW;
D O I
10.1016/j.commatsci.2009.04.001
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Molecular dynamics simulations of liquid transition metals Ni and Cu have been performed with the tight-binding potential model. The surface tensions of the liquid metals at different temperatures are evaluated using both methods of calculating the work of cohesion and of using the mechanical expression for the surface stress. The calculated surface tension data are compared with available experimental values. The simulated results for Ni are in good agreement with experiment, but those for Cu show about 10-20% underestimation. Comparing with the mechanical method, the data of surface tension calculated using the method of cohesive work show remarkable dependence on temperature, and the estimated temperature coefficients of liquid Ni and Cu are consistent with the experimental data. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:516 / 519
页数:4
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