Keyword: «friction»

The paper presents a study of behaviour strategies and emotional barriers in interpersonal communication in adolescents. The relationship between the self-esteem of mental states of adolescents and the presence of emotional "interference" in them is shown, which may indicate that the level of emotional efficiency in communication can be reduced by reducing the level of anxiety, friction, aggressiveness, rigidity, i.e. increasing the self-esteem of mental states.

This article presents the results of wear tests at low climatic temperatures of modified gas-flame coatings with copper and cobalt spinels. Graphs of friction temperature changes at the initial stage of wear and along the entire friction path are shown. The results of mass wear of coatings and metal counterbodies are presented and analyzed.

Ultrafine-grained (UFG) materials obtained by methods of severe plastic deformation (SPD) have a number of unique properties, such as high strength, hardness, toughness, tendency to superplastic behavior, etc. The features of the mechanical behavior of such materials are due to their structural state, primarily the length of the intergrain boundaries and their disequilibrium. Despite the close attention to UFG materials, there are practically no works devoted to their tribological behavior. Since wear resistance is a complex indicator, which is affected by a number of factors, the study of the influence of the structure of UFG materials on their tribological behavior needs further development.

This article presents the results of wear tests at low climatic temperatures of a modified coating made of flux-cored wire with aluminum oxide and a metal counterbody made of ShKh15 steel. The data of temperature changes, roughness parameters and friction surface profiles are shown. The results of comparative studies of the wear of a modified coating and a metal counterbody are presented and analyzed.