液态金属的定容比热随温度变化的理论研究

Theoretical Research on Temperature Dependence of the Specific Heat at Constant Volume for Liquid Metals

Department of Applied Physics, National University of Defense Technology, Changsha 410073, China

摘要: Grover根据实验数据给出，液态金属的定容比热随温度近似线性减小：cV3R-RT/Tm，式中T为温度，Tm为熔化温度，R为普适气体常数，为经验常数，其值在0.11至0.24之间，就平均来说，0.15。利用Lennard-Jones-Devonshire理论对这一经验关系进行了解释。
- 液态金属 /
- 比热 /
- Lennard-Jones-Devonshire理论
Abstract: Based on the experimental results, Grover[1] presented an approximation formula for the specific heat at constant volume of liquid metals versus temperature: cV3R-RT/Tm, where T is the temperature, Tm is the melting temperature, R is the gas constant, is an empirical constant, with value of 0.11~0.24, its average value is about 0.15. In this paper, the approximation relation is deduced by using the Lennard-Jones-Devonshire theory.
- liquid metal /
- the specific heat at constant volume /
- Lennard-Jones-Devonshire theory