METHOD OF PRODUCING HEAT-RESISTING COAT ON GAS TURBINE VANES Russian patent published in 2012 - IPC C23C30/00 C23C14/06 C23C4/04 

FIELD: machine building.

SUBSTANCE: invention relates to method of producing heat-resisting coat on gas turbine vanes from nickel or cobalt alloys. Proposed method comprises ion-plasma preparation and ion-implanting vane surface treatment, and vacuum-plasma application of heat-resisting layer. Ion-implanting treatment of vane surface is performed by ions of one or several elements selected from N, C, B, Pd, Ag, and combination thereof with ions Nb, Pt, Yb, Y, La, Hf, Cr, Si. Note here that, in atmosphere of nitrogen and/or carbon in vacuum not lower than 10^-3 mm Hg, applied is at least one of the following heat-resisting layers with composition that follows in wt %: Co - 12-20, Cr - 18-30, Al - 5-13, Y - 0.2- 0.65, Ni making the rest; Cr - 18-30, Al - 5-13, Y - 0.2-0.65, Ni making the rest; Si - 4.0-12.0, Y - 1.0 -2.0, Al making the rest. Then, coating is thermally treated.

EFFECT: higher heat resistance, longer life and higher cyclic strength.

22 cl, 3 tbl