Theoretical analysis of reactive solid-liquid interfacial energies  

作　　者：ZHU DingYi LIAO XuanMao DAI PinQiang 

机构地区：[1]Department of Materials Science and Engineering,Fuzhou University,Fuzhou 350108,China

出　　处：《Chinese Science Bulletin》2012年第34期4517-4524,共8页

基　　金：supported by the National Natural Science Foundation of China (50471007);the Natural Science Foundation of Fujian Province,China (2011J01292)

摘　　要：The characterization of reactive solid-liquid interfacial energies and solid surface energies is a pressing problem in materials science and surface science. Based on the concept that unbalanced forces doing work, a mathematical formulation between surface energies and interfacial energies for reactive wetting is presented. The resulting formalism has significant generality in which the equilibrium Young's equation for solid-liquid interfacial energies is just a special case. It is shown that a solid-liquid interfacial energy at non-equilibrium is always higher than that at equilibrium, and that the transformation of reactive interfaces to equilib-rium interfaces is an inevitable, spontaneous process. The numerical range of solid-liquid interfacial energies γsl for a limited, solid-liquid interfacial wetting system was calculated to be 0 ≤γsl ≤γsg. The calculation methods for reactive solid-liquid interfacial energies and solid surface energies are presented. They are significant for composite materials and weld, powder sinter, package of electronic devices, and other surface and interfacial issues in metallurgy.The characterization of reactive solid-liquid interfacial energies and solid surface energies is a pressing problem in materials science and surface science. Based on the concept that unbalanced forces doing work, a mathematical formulation between surface energies and interfacial energies for reactive wetting is presented. The resulting formalism has significant generality in which the equilibrium Young＇s equation for solid-liquid interfacial energies is just a special case. It is shown that a solid-liquid interfacial energy at non-equilibrium is always higher than that at equilibrium, and that the transformation of reactive interfaces to equilib- rium interfaces is an inevitable, spontaneous process. The numerical range of solid-liquid interfacial energies N1 for a limited, solid-liquid interfacial wetting system was calculated to be 0 ≤ Ys1≤ Ysg. The calculation methods for reactive solid-liquid interfacial energies and solid surface energies are presented. They are significant for composite materials and weld, powder sinter, package of electronic devices, and other surface and interfacial issues in metallurgy.

关 键 词：界面能 反应性 固体表面能 表面科学 不平衡力 粉末烧结体 材料科学 数学公式 

分 类 号：TB30[一般工业技术—材料科学与工程]