METHOD OF TREATMENT OF SURFACE OF METAL ARTICLE Russian patent published in 2006 - IPC C23C14/48 C23C14/16 

FIELD: mechanical engineering; modification of machine parts.

SUBSTANCE: proposed method includes preparation of surface of part and placing part and current-conducting material in area of treatment. Then, vacuum is formed in zone of treatment of part and negative potential is delivered to part and to current-conducting material, after which surface of part is cleaned and heated by plasma ions of current-conducting material. Accumulation and diffusion of current-conducting material on surface of part are performed at negative potential first setting its magnitude within 250-500 V and then within 0-150 V at temperature of part surface below temperature of loss of strength of material of part. Ni-based alloy is used as current-conducting material at the following composition of components, mass-%: Al, 3-15; Cr, 1-20; Y, 0.05-0.6, the remainder being Ni. In particular cases, part may be made from titanium or titanium-based alloy.

EFFECT: enhanced heat resistance and resistance to salt corrosion.

2 cl, 1 tbl, 7 ex