Vakulenko K. Physical bases of regulation of adhesion interaction of metals with carbides, nitrides and oxides of d-transition metals and sp-elements

Object: adhesion of solid states of the various nature with metals in the solid and fused states, and also serviceability of vacuum-plasma coats. The purpose: development of representations about the nature and the adhesion mechanism of solid states and making of a principal physics of its regulation. Methods: analytical comparison of results of studying of an adhesion in the different requirements, data about machineability and length of contact of a shaving; a X-ray diffraction analysis, an electronic raster-type and optical microscopy, measuring of hardness, a microhardness, profiloscopy, an estimate of the cavity resistance, quality of an adhesion. Results: features of adhesion of various materials are analyzed, the most important elements of the mechanism of adhesion of solid states are distinguished, the generalized concept of adhesion, which does not contradict experiment, is submitted. It was proved, that the adhesion activity of two-componential high-melting carbides, nitrides and oxides of the d-transition metals and sp-elements depends on a difference of electronegativities of the elements including in compositions. Criteria to estimate the adhesion activity of solid states and a physical principle of its regulation are offered and proved. The interrelation between workability of the majority of constructional materials and intensity of adhesion bond of a shaving with a front surface of the tool is established. Multilayer vacuum-plasma coats for protection steel 20Ch13 from cavitational erosion are designed. It is proved, that protective properties immediately depend on the adhesive and cohesive strength. Field of application: physics of solid state, physics of adhesive interaction, technological processes