PROCEDURE FOR APPLICATION OF WEAR RESISTANT COATING ON BLADES OF COMPRESSOR OF GAS TURBINE ENGINE (GTE) Russian patent published in 2011 - IPC C23C14/48 C23C14/06 C23C14/34 

FIELD: metallurgy.

SUBSTANCE: procedure consists in sedimentation of alternate layers of metals and their nitrides at cleaning surface of blades with ions of argon and in ion implantation in process of sedimentation. Blades are preliminary polished and cleaned in an ultra-sonic bath. Blades are cleaned with argon ions by means of gas plasma produced by supply of short-pulse high frequency high voltage negative potential of bias on blades. Further, argon plasma is changed to nitrogen plasma and ion implantation of nitrogen is performed with the same parameters of bias potential. Generation of nitrogen plasma is interrupted, and there is produced plasma of titanium; it is purified from micro-particles and bias potential is supplied on blades with the same high frequency parametres facilitating implantation of titanium ions into a surface layer and blades heating, when blades reach temperature required for coating sedimentation. With reduced bias potential an under-layer of titanium is applied on blades. Alternated layers of titanium nitride and titanium-aluminium nitride are settled; notably, the layer of titanium nitride is settled at production of nitrogen plasma, while the layer of titanium-aluminium nitride - at titanium-aluminium plasma.

EFFECT: raised resistance to wear, erosion, corrosion and high temperature at maintaining mechanical properties and cyclic fatigue of blades.

12 cl, 3 tbl, 4 dwg