METHOD OF APPLYING PROTECTIVE COATING ON BLISK BLADES FROM TITANIUM ALLOY Russian patent published in 2019 - IPC C23C14/48 C23C14/06 C23C14/16 

FIELD: metallurgy.

SUBSTANCE: invention relates to method of application of protective coating on blisk blades of gas turbine engine out of titanium alloy. Proposed method comprises hardening of surface material of blisk blades with application of ion-plasma multilayer coating. When coating is applied, blisk is rotated relative to its longitudinal axis OX₁ and simultaneously rotate relative to axis O_iY_i, crossing OX longitudinal axis₁ on section AB, equal to two widths of blisk h, measured in longitudinal direction OX₁ and symmetrically located on both sides of blisk on longitudinal axis OX₁. Angle α inclination of OX₁ axis to axis O_iY_i is selected from 45 to 85 degrees and application of coating on blisk blades is carried out at fixed angle position α, and axes inclination angle β O_iY_i to direction of flow of deposited material OX is from 85 to 95 degrees, wherein angles α and β is selected to ensure maximum deposition of applied coating material on blisk blades edges.

EFFECT: invention can be used in aircraft engine building and power turbine construction to protect blade of working blades from erosion destruction.

5 cl, 6 dwg