METHOD FOR PROTECTING GAS TURBINE ENGINE COMPRESSOR BLADE FEATHER MADE FROM TITANIUM ALLOYS FROM GAS ABRASIVE WEAR Russian patent published in 2023 - IPC C23C14/16 C23C14/24 C23C28/00 

FIELD: gas turbine engines; protection from gas abrasive erosion.

SUBSTANCE: invention relates to a method for protecting a gas turbine engine compressor blade made of titanium alloys from gas abrasive erosion. The blade feather is polished, followed by application of an ion-plasma multilayer coating on the blade feather in the form of a specified number of pairs of layers in the form of a layer of titanium with metal and a layer of titanium compounds with metal and nitrogen. Vanadium is used as a metal. Ion-plasma multilayer coating is applied with the ratio of titanium to vanadium in layers, wt.%: V from 2.5% to 98%, the rest – Ti. A layer of titanium with vanadium is applied with a thickness S₁ from 0.1 to 1.5 microns. A layer of titanium compounds with vanadium and nitrogen is applied with a thickness S₂ from 0.5 to 10.0 mcm with a total thickness of the multilayer coating S₀ not exceeding 50 mcm.

EFFECT: obtaining a multilayer coating capable of effectively protecting blades made of titanium alloys from erosive wear under conditions of exposure to gas flows containing abrasive particles.

7 cl, 2 dwg