MULTI-LAYERED WEAR-RESISTANT COATING ON A STEEL SUBSTRATE Russian patent published in 2021 - IPC C23C28/04 C23C16/26 C23C16/32 C23C16/453 C23C14/16 C23C14/24 B82Y30/00 

FIELD: coatings.

SUBSTANCE: invention relates to wear-resistant multi-layered coatings with high corrosion resistance and can be used in metal working, mechanical engineering, the petroleum and gas industry and the chemical industry. The multi-layered wear-resistant coating deposited on a steel substrate is comprised of alternating layers: a diamond-like carbon layer and a nanocomposite layer. The diamond-like carbon layer constitutes a hydrogenated diamond-like carbon layer produced by the method for plasma-assisted chemical vapour deposition (PACVD). The nanocomposite layer produced by the combined method for physical vapour deposition (PVD) and plasma-assisted chemical vapour deposition (PACVD) comprises chromium, aluminium, compounds thereof with carbon and oxygen, wherein the total content of chromium in the nanocomposite layer is 30 to 35 at.%, aluminium - 50 to 52 at.%, carbon - 13 to 18 at.% and oxygen the rest. The resulting multi-layered coating comprises 20 to 50 of said alternating layers with a thickness of each thereof of 40 to 50 nm, wherein the thickness of said multi-layered coating is 800 to 2,500 nm.

EFFECT: high wear resistance due to the reduction in the friction coefficient and improvement in the interlayer adhesion and corrosion resistance due to the thickness and structure of the nanocomposite layer combined with the improved interlayer adhesion.

1 cl, 2 dwg, 3 tbl, 1 ex