Concept Optimization for Coating Application and Quality of APS applied TBC on Gas Turbine Blades and Vanes

There are different concepts for TBC coating application that varies in the method of applying the coating layers.  An analysis of the existing part portfolio sprayed with different coating concepts shows that there is a 75 % difference in spray performance depending on which concept is used. This offers a large potential for cost savings. The effective use of offline programming tools in combination with a detailed coating process analysis provided the base for the coating concept optimization for Vanes and Blades used in industrial gas turbines. The validation of this optimized coating concept shows an improvement of more than 75 % in spray performance leading to a coating time improvement of up to 40%.