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Pages 26-37
 10.61552/JME.2023.01.004
Olexiy Sagalovich  , Viktor Popov, Vladislav Sagalovich , Stanislav Dudnik ,
Oleksandr Olijnyk
Abstract:
As part of the program to search for new materials with high
characteristics according to Avinit vacuum-plasma technologies, based on
the complex use of coating methods (CVD + PVD), stimulated by nonequilibrium low-temperature plasma, the technological parameters of
applying tightly bonded high-quality multilayer and nano-layer "metalmetal coatings" were worked out:
- metal PVD coatings of Mo, Cu;
- multi-layer PVD coatings based on Cu-Mo-N;
- multi-layer PVD coatings on the basis of (Cu-C) (with different carbon content).
Studies of samples with coatings were performed (micro-grinding, coating
hardness, determination of surface geometry after coating). The thickness
of multilayer coatings is 1...2 microns. with coating hardness of 250-400
kg/mm2. The developed regimes ensure high adhesion and preservation
of the hardness of steel DIN 1.2379 within the specified limits. Distortions
of the geometry and roughness of the coated surfaces, compared to the
condition before the coating, were not detected.
Tribological tests of coated samples were carried out.
All tested coatings were completely worn out when rubbing steel DIN
1.2379 at very low loads (max up to 300N, then the load did not increase).
All coatings had a high coefficient of friction Kfr ≥ 0.15.
The use of such coatings in tribocombinations with steel in the form of
independent wear-resistant coatings is impractical. They can be
considered as soft layers in the development of new structures of antifriction wear-resistant coatings to increase the performance of friction
pairs in the "coating-steel" and "coating-coating" tribosystems.
Keywords: Avinit multicomponent multilayer,
coatings,
Tribological characteristics,
Friction
Recieved: 07.02.2023
Revised: 05.03.2023,
Accepted: 02.04.2023
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