Abstract:
Multilayer TiN – TiCuN – TiN – TiCuN and TiN – TiCuN – TiÑuCO coatings were obtained by vacuum-arc
deposition from separated plasma flows. It has been established that the adhesive strength of the formed multilayer coatings
depends both on their architecture and on the difference in chemical composition. The use of TiÑuCO as a surface layer
increases the corrosion resistance of the multilayer coating, but reduces the load indicators before the first crack appears.
The electrochemical behavior of multilayer TiN – TiCuN – TiN – TiCuN and TiN – TiCuN – TiÑuCO coatings was studied
depending on their thickness and the number of layers in them. It is shown that for all coatings the greatest influence on the
corrosion resistance of the coatings is exerted by the thickness of the TiCuN layer, an increase in which leads to an
improvement in the corrosion resistance of the coatings regardless of the ratio of layers in them, which is due to a decrease
in the porosity of the coatings due to the formation of microstructural barriers in them, as well as the ability of the elements
of the coating material to form passive surface layers in aggressive environments.
Fulltext:
PDF file (983 kB)