Differences between solid superheating and liquid supercooling

被引:35
作者
Bai, XM [1 ]
Li, M [1 ]
机构
[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
关键词
D O I
10.1063/1.2085147
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The thermodynamic and kinetic behaviors for solid superheating and liquid supercooling were critically examined and compared via molecular- dynamics simulations. It is shown that the large elastic energy associated with internal melting and solid- liquid interface disorder play important roles in superheating. The growth rate is anisotropic for supercooling, but isotropic for superheating. Supercooling can be well described by the classical nucleation theory, whereas superheating shows many exceptions. The underlying mechanisms for these differences are discussed. (c) 2005 American Institute of Physics.
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页数:4
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