Open AccessEffects of active adsorption on thermodynamic equilibrium of solid-liquid interface
Author(s) -
Lanxian Cheng,
Bingdong Yan,
Y. Liu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/770/1/012047
Subject(s) - wetting , adsorption , thermodynamics , surface energy , contact angle , thermodynamic equilibrium , wetting transition , materials science , chemistry , physics
The effect of active adsorption on thermodynamic equilibrium of solid-liquid interface is analyzed. The results show that the Young’s equation is inapplicable in case of active adsorption at the solid-liquid interface. For the case of wetting balance with active adsorption, a new thermodynamic equilibrium equation was deduced, which has the same form of Young’s equation but implies a different physical meaning. The wetting force caused by adsorption is presented as an imaginative force, which promotes the liquid wetting at non-metal substrates. The estimation of wetting force for silicon reveals that the active element segregated at the solid-liquid interface plays an important role in thermodynamic equilibrium, and the wetting force is sufficient to drive the high-energy liquid metal to wet and spread on the surface of non-metal substrate.