化工学报2025，Vol.76Issue(6)：2544-2548,5.DOI:10.11949/0438-1157.20241059
静电场作用下液体凝固点变化的热力学机理
Thermodynamic mechanism of change in freezing point under action of electrostatic field
摘要
Abstract
The freezing point is an important thermodynamic parameter to represent the solid-liquid phase change process.Experiments showed that electrostatic field can change the solid-liquid equilibrium,thus,it is a method of regulating the solid-liquid phase transition process.In this paper,based on the principle of phase equilibrium,and employing the expression of chemical potential under the action of electrostatic field,a mathematical expression for freezing point with the influence of electrostatic field was derived.The characteristics of the change in freezing point with electrostatic field was investigated through numerical calculations,which showed that the change is proportional to the square of the electric field strength,and the change is also related to the physical properties of the material.According to the difference in dielectric constants between solid phase and liquid phase,the freezing point of some substances increases and others decrease under the action of electrostatic field.关键词
相变/相平衡/凝固点/热力学性质Key words
phase change/phase equilibria/freezing point/thermodynamic properties分类
通用工业技术引用本文复制引用
韩光泽,张佩璇..静电场作用下液体凝固点变化的热力学机理[J].化工学报,2025,76(6):2544-2548,5.基金项目
国家自然科学基金项目(51937005,51576068) （51937005,51576068）
