APPLICATION METHOD ONTO METAL PART OF COMPLEX COATING FOR PROTECTION OF PART AGAINST HYDROGEN CORROSION, WHICH CONSISTS OF MANY MICROLAYERS Russian patent published in 2013 - IPC C23C14/34 C23C14/48 C23C14/02 

FIELD: machine building.

SUBSTANCE: method involves degreasing of a part, arrangement of a part in a vacuum chamber, pumping of the chamber till vacuum, pre-cleaning in inert gas medium, ionic cleaning/etching of surface, deposition of layers by condensation with ionic bombardment and cooling in vacuum, and then, in inert gas medium. The part is arranged at a flow focusing point of at least two vacuum arc plasma sources. Pre-cleaning is performed in environment of ionised inert gas. Ionic cleaning/etching of surface is performed by supplying to a substrate first of voltage in the range of 200-500 V; and then, it is smoothly or step-by-step increased to 1-1.5 kV. At that, for application of the coating microlayers there used are alloys on the basis of combinations of metals chosen from the group of Cr, Ni, W, Nb, Zr, Ti, Al, Mo by their simultaneous sputtering at the part rotation.

EFFECT: improvement of operability, reliability and durability of coated parts.

2 cl, 2 dwg