METHOD OF APPLYING A FUNCTIONALLY ORIENTED WEAR-RESISTANT COATING ON A GAS TURBINE BLADE Russian patent published in 2020 - IPC C23C14/04 C23C14/22 

FIELD: machine building.

SUBSTANCE: invention relates to application of coatings in vacuum and can be used for application of multilayer functionally oriented wear-resistant coating on gas turbine engine blades. Method for depositing a functionally oriented multilayer wear-resistant vacuum ion-plasma nitride titanium coating on a gas turbine engine blade, having variable thickness, includes application of titanium nitride coating layer on blade root using protective screen, wherein each titanium nitride coating layer is formed with a constant thickness using a protective screen with a spatial outline of wear boundaries of the continuous monolayer of constant thickness, having physical and chemical properties similar to applied coating. Displaying spatial contour of boundaries on each protective screen is performed successively at equal time intervals, wherein to apply each layer of titanium nitride coating of constant thickness, protective screens with the displayed spatial contours of the boundaries of each layer are installed on the blade in reverse order relative to the sequence of mappings of the spatial contour of the wear limits of the test coating. Thickness of each applied layer of titanium nitride is determined by thickness of test coating, and first layer of coating is applied without protective screen. In particular cases of implementation of the invention, the thickness of any applied layer of the multilayer coating is varied proportionally depending on the value of variation of the duration of the time interval between the displays of the spatial contour of the wear limits of the test coating on protective screens. Thickness of any applied layer of the multilayer coating is varied proportionally depending on the value of variation of parameters of its resistance.

EFFECT: enabling creation of a mechanism and an algorithm for forming a functionally oriented multilayer coating of variable thickness using layers of constant thickness with different topographic parameters of the spatial boundary of each layer depending on action of uneven abrasive-erosion of elements and surfaces of body of blade body during operation.

3 cl, 4 dwg, 1 ex