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Anatoliy Ranskiy, Olga Gordienko, Taras Titov, Natalia Didenko Vinnytsia National Technical University, National Pirogov Memorial Medical University, ranskiy@gmail.com FORMATION OF COPPER (II) COORDINATION COMPOUNDS UNDER THE FRICTION PROCESS AND THEIR IMPACT ON THE TRIBOTECHNICAL CHARACTERISTICS OF THE LUBRICATING COMPOSITIONS It has been investigated the tribochemical system «bronze BrAZ 9-4 – organic additive – oil I-20A – steel 45» in which due to mechanical activation of metal particles of the surfaces of friction pair the copper(II) coordination compounds have been created. These complexes provide high antiwear and antifriction properties of the lubricating compositions. The sequential complication of lubricating compositions by adding organic solvents, thioamide ligands and metal chelates of copper(II) based on them to base oil I-20A allowed to establish an order of anti-wear activity of additives to industrial I-20A oil and investigate the influence of each of the factors on tribotechnical characteristics in friction pair «bronze BrAZ 9-4 – steel 45». Based on the obtained results, it is concluded that improvement of the operational characteristics of lubricating compositions is determined by the formation of copper(II) coordination compounds during the tribochemical reactions.

Formation of copper (II) coordination compounds under the friction process and their impact on the tribotechnical characteristics of the lubricating compositions