Coordination Compounds of Metals of Life and Bioligands as Model Additives to Ecofriendly Lubricating Compositions

The actuality of the creation of new ecofriendly biobased lubricants and hence a new generation of multifunctional additives to the them based on metals of life and bioligands has been substantiated. Methods for the synthesis of model complexes-additives of Mg(II), Cu(II) and Mo(IV) with b-dicarbonyl ligands and hydroxamic acids, the peculiarities of their molecular structure, and tribological properties in ethyl laurate solution (base oil of vegetable origin) are considered. It has been found that copper- and molybdenum-containing antiwear additives affect the microstructure and composition of the surfaces and subsurface layers of the friction zone due to the penetration of their elements as impurities into depth of surface layer for the samples of friction pairs.