METHOD OF MACHINING METAL PART Russian patent published in 2009 - IPC C23C14/48 C23C14/06 

FIELD: process engineering.

SUBSTANCE: part surface is preliminary prepared, part and current conducting material are placed in zone of machining to be, then pumped out. Now negative potential is fed to the part and, independently, to current conducting material. Then vacuum arc on current conducting material is excited to produce plasma. The part surface is subjected to bombardment, cleaning and heating by ions of current conducting material, and the latter is accumulates on the part surface. Note here that accumulation of the said material is carried out in presence of reactive gas comprising inert gas and at least one element from the group consisting of carbon, nitrogen and oxygen. First, a layer representing a composite material is formed containing carbides and, then a layer representing a composite material containing metal nitrides and/or oxides.

EFFECT: longer life and stability.

2 cl, 1 tbl, 4 ex