NANOCOATINGS BASED ON MAGNESIUM COMPOUNDS

Presented research results properties detonation composite nanocoatings based on magnesium orthosilicate under conditions of high-temperature friction at constant load in the sliding velocity field. It has been established that on their surface under conditions of elevated temperatures, stable antifriction structures are formed. The structural and phase composition of the coatings has been determined by methods of modern physical analysis and integral complex of oxide and oxygen-free high-temperature compounds of surface layers. The regularities that determine the antifriction properties of coatings due to self-organization of surface high-temperature oxide and oxygen-free structures are considered, characterized by low shear resistance and at the same time acting as solid lubricants, which modify contact surfaces and prevent adhesive-molecular interaction of mobile compounds. The studied coatings have high and stable antifriction properties throughout the entire load-speed range of the tests.