METHOD FOR THE MANUFACTURE OF THERMAL BARRIER COATINGS.

摘要

Procedure for making thick thermal barrier coatings (11), for use in gas turbine components (5) and, mainly, in thermal screens, combustion chambers or turbine wall cladding panels, said thermal barrier coating being ( 11) the result of the successive deposit of several numbers of layers (13, 15) that are joined together to constitute the coating (11), the coating (11) being obtained by a thermal projection process, characterized in that it comprises the steps of arranging at least three layers of coating (13), each of said layers being deposited at a different angle (γ, ß, α) of a projection gun (33); said angles being defined (γ, ß, α) with respect to the surface to be sprayed and coated between 30 ° and 150 ° with respect to the tangent of the surface (3) of the component (5) to be coated; the structure of said coating layers (13) presenting a variable porosity with fine pores evenly distributed in the body of the coating obtained.