METHOD OF PRODUCING REFRACTORY COAT OF GAS TURBINE VANES Russian patent published in 2012 - IPC C23C30/00 C23C14/48 

FIELD: machine building.

SUBSTANCE: vanes are arranged in vacuum chamber to prepare their surface and subjected to vacuum plasma application of refractory coat of the following composition: Si 4.0-4.5 wt %, Y 1.6-2.0 wt %, Al making the rest, or Si 4.0-12.0 wt %, Y 1.6-2.0 wt %, Al making the rest, n feeding boron, or mix of boron with nitrogen, or mix of boron with carbon, in concentration sufficient for forming in formed layer of borides, or their complex compounds with metals to retard diffusion processes in coats in operation of vanes. Application of said refractory layer is alternated with implantation of ions of one or several elements Nb, Pt, Yb, Y, La, Hf, Cr, Si, Pd, Ag, N, C, B, W, V, Ti, Zr, said implantation being performed unless micro- or nano-layer is formed to divide the entire layer into micro- or nano-layers formed by both ion implantation and application of refractory layer without implantation of ions.

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

15 cl, 3 tbl