FORMATION METHOD OF CORROSION-RESISTANT COATING ON TITANIUM ITEMS Russian patent published in 2012 - IPC C23C24/10 C23C14/10 

FIELD: metallurgy.

SUBSTANCE: method involves application to the treated surface of layer of the powder containing flux-forming and modifying component, hard-facing by means of scanning beam of relativistic electrons; at that, to the powder layer applied to the treated surface there additionally added is wetting agent in the form of titanium powder; as modifying agent there used is the powder consisting of tantalum or tantalum mixed with niobium, at mass thickness of powder layer σ, which is determined from the ratio σ = K·(E - b), where K = (0.2 - 0.4) [g·cm^-2-MeV^-1], E - energy of electrons in MeV, b = 0.21 MeV; treatment by means of scanning beam of relativistic electrons of each point of the item surface is performed during 0.5 - 2.0 s.

EFFECT: creating the coating at absence of restrictions for length and width of items; increasing the thickness of the coating to 4 mm and providing the resistance to diluted and concentrated nitrogen, sulphuric, phosphorus and chlorhydric acids.

5 cl, 3 dwg, 2 tbl, 1 ex