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摘要: 从温度T时的压强表达式出发,结合普适状态方程(UEOS)、Debye模型和热力学关系式,给出了计算金属线性热膨胀系数的普遍公式。并对Al、Cu、Pb的这一物理量进行了具体计算。结果表明,理论与实验符合较好。Abstract: Based on the expression of pressure at temperature T and in terms of the universal equation of state Debye model and the thermodynamic relations, a general expression for the calculation of the linear thermal expansion coefficients of metals is obtained. This formula applied to the calculation of Al, Cu, Pb. Calculated results are in good agreement with the experiments.
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Key words:
- EOS /
- metal /
- linear thermal expansion
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Rose J H, et al. Phys Rev Lett, 1981, 45: 675-679. Vinet P, et al. J Phys C, 1986, 19: L467. Vinet P, et al. J Phys C: Condensed Mat, 1989, 1: 1941-1962. 郑伟涛. 高压物理学报, 1993, 7(1): 42-46. 徐锡申, 张万箱. 实用物态方程导论. 北京: 科学出版社, 1986. Midha Y R, et al. J Appl Phys, 1975, 46: 3710-3711. Guinea F, et al. Appl Phys Lett, 1984, 44: 53-55. Taylor B N, et al. American Institute of Physics Handbook. 3rd ed. New York: McGraw-Hill Book Company, 1972. Vinet P, et al. Phys Rev B, 1987, 35: 1945-1952.
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