Synergetic concept of metal coatings formation by plasma-cavitating method and their properties

Abstract

The paper presents the principal advantages of the method of plasma-cavitating coatings formation that characterize it as a highly promising technology. It is shown that these advantages are provided by the integrated nature of the effect, representing a combination of the main types of impacts on a surface: electrical, thermal, mechanical and chemical. This combination distinguishes the method of plasma-cavitating treatment from many other widespread in up-to-date technology combinations composed generally of two types of impacts. It is proposed that the process of plasma-cavitating coatings formation is carried out by the mechanism of metal pressure welding that is confirmed by the results of tests for determining quality ratings of coatings. The thermodynamic and kinetic unity of these processes is shown that allows plasma-cavitating coating to be put in class of metal pressure welding processes and to consider the processes of coating by plasma-cavitating method and pressure welding within a common methodological framework.