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Modeling Solid-State Precipitation by Ernst Kozeschnik

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Chapter 4

Interfacial Energy

When two initially isolated phases are brought into contact, the atoms constituting the two phases interact with each other across the new phase boundary. The part of the total energy of this system which is related to the interfacial region between two phases in contact is denoted as the interfacial energy, γ. Its value is commonly referred to in units of J/m2.

The interfacial energy is a quantity which plays an important role in many continuums-mechanical approaches. The basic concept of interfacial energies root back to William Thomson [15] and Josiah Willard Gibbs [16] in their classical treatment of liquid droplets being in equilibrium with saturated vapor. Although originally considered as a surface energy, ...

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