Surface (interface) free energy for mechanical seal applications-

Surface (interface) free energy for mechanical seal applications

　2017-03-14　　

Surface (interface) free energy for mechanical seal applications

The properties of the solid surface layer are different from those inside the solid. When molecule A moves from the inside to the surface, it must overcome the internal gravitational force to do work on molecule A. The work done on the molecule is transformed into the potential energy of the surface molecule. This sum of surface potential energy is called the interface free energy of the solid surface when the solid is in contact with air. If the solid is in a vacuum state, it is called the surface free energy of the solid. The surface (interface) free energy per unit area is called the specific surface curvature energy. It is represented by ^. The unit is that the molecules on the surface tend to enter the interior from the surface under the action of the internal gravitational force, so that the surface area is as small as possible. The result is The surface tangential produces surface tension. The unit of surface tension is the same as the unit of specific surface energy.　　350.html,

The physical and chemical properties of the solid surface for mechanical sealing applications 　　 the wettability of the solid surface for mechanical sealing applications, the cohesion work and adsorption work of the material