Analysis of the effect of preliminary mechanical activation of the surface layer on the adhesion characteristics of the metal surface of the substrate-coating system

The article proposes a new concept of the theory of adhesion, which is based on the analysis of the energy state of the surface layer of the substrate (substrate). The results of research on the analysis and identification of the nature and mechanisms of adhesive forces, as well as the nature of changes in the energy potential of the contacting phases of the substrate-coating system are presented in a comprehensive analysis of the phenomenological processes of structuring the granular interfacial surface during the implementation of preliminary mechanical activation using loading schemes characteristic of OMD processes. The nature and contribution to the process of the influence of the characteristics of the structurally deformed components of the substrate/substrate, their morphology, the influence of the quality of the intergranular contact surface on the amount of surface energy (Gibbs index), as well as the level of surface tension sn, which determines the nature of wetting the surface of the substrate and the course of adhesive phenomena of mechanical activation of its surface layer, are proposed and revealed. A technique is proposed for fixing the stages of intense plastic deformation, taking into account the structural and deformation characteristics of the modified substrate and the level of accumulated deformation, based on the dislocation mechanism of cold plastic loading, as well as changes in the grain structure (accumulated deformation). A mathematical model of grain structure change during deformation hardening of metal is proposed. A physical and mathematical model of the change in the surface energy of the contacting media of an adhesive compound, including a modified metal substrate, has been developed, including taking into account the topology of the contact surface. A mathematical model describing the formation of stable adhesive bonds of the modified substrate-coating system is proposed.