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MOLECULAR DYNAMIC SIMULATIONS OF MOLTEN NaF

ZHANG Jing , CHENG Zhaonian , CHEN Nianyi , Shanghai Institute of Metallurgy , Academia Sinica , China CHENG Zhaonian , Associate Professor , Shanghai Institute of Metallurgy , Academia Sinica , Shanghai 200050 , China

金属学报(英文版)

The structure and transport properties in molten NaF have been studied using the method of molecular dynamics simulation. The calculations are based on two models of interionic potentials, which are Fumi-Tosi potential (FT) and the Fumi-Tosi potential without Van der Waals attractive item (FT). The radial distribution function (RDF) and the Na~+ and F~- self-diffusion coefficients have been calculated. The calculated results are in good agreement with the experimental ones. The calculation shows that the two models give nearly identical radial distribution function and self-diffusion coefficient, but the results of FTpotential are a little better than those of FT potential.

关键词: molten NaF , null , null

熔融NaF的分子动力学模拟研究

张静 , 程兆年 , 陈念贻

金属学报

本文用分子动力学方法对熔融NaF进行了计算机模拟研究。离子间相互作用势采用两种形式。其一是Fumi-Tosi(FT)势;其二是不计入Vander Waals引力的FT势(记为FT′),计算了径向分布函数以及Na~+,F~-的自扩散系数。计算结果与实验值很好相符。计算结果表明,两种势函数给出的模拟结果对径向分布函数和扩散系数无显著影响,但FT势比FT′势有所改善。

关键词: 熔融NaF , molecular dynamics , computerized simulation

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