HIGH-TEMPERATURE FTICTION IF MAGNESIUM-DASED COATINGS

The results of the study of the wear characteristics of detonation composite nanocoatings based on magnesium orthosilicate under conditions of high-temperature friction under constant load in the field of sliding speeds, on the surface of which stable antifriction structures are formed under conditions of elevated temperatures, are presented. The structural-phase composition of the coatings was determined by methods of modern physical analysis and the complex of high-temperature compounds of the surface layers was determined. The developed and studied coatings have high and stable antifriction properties. It was determined that the antifriction property under friction loading is due to the self-ordering of surface high-temperature oxide and oxygen-free structures, which are characterized by low shear resistance and work as solid lubricants that modify the contact surfaces and prevent damage to moving joints.