Experimental Investigations of “Avinit” Type Coatings

A.V. Sagalovych, A.V. Kononyhin, V.V. Popov, S.F. Dudnik, V.V. Sagalovych

Were carried out metallographic investigations of modernized constructions of multilayered coatings type Avinit С on the nitride base. Avinit С are coatings on the base of system Ti-Al-N and coatings on the base of system Mo-N. Utilizing in developing technologies effective methods of surface etching and cleaning and multistage arc suppression system for prevention of surface deteretorriation by microarcs made it possible to deposit coatings on precision surfaces of high-class roughness up to 12-13 without increasing surface roughness. Obtained experimental results gives an idea of possibility low temperature deposition of hard coatings Avinit С on the base of metal nitrides in regimes wich guarantees vivid adhesion to the base material (steel Х12МФ, Din 1.2379, BOHLER Х155CrVMo12-1, ASTM D2) without decreasing of strength properties of steel (< 200ºC) and without buckling of coated surfaces. Obtained results allows us to develop software for deposition of multilayered multicomponent coatings of pregiven composition on Avinit equipment and working out of stable technologies of functional coatings deposition for utilizing in precision friction pairs of aviation units.

Key words: vacuum-plasma multicomponent multilayed coatings, tribology.