Thermal Spray in Aerospace

Thermal sprayed coatings, especially using APS or HVOF spray are widely used in Aero engines. The fan,compressor, combustion chamber, and turbine must be protected with coatingsagainst oxidation, hot gas corrosion, erosion, and wear. Hundreds of componentsare now sprayed in an aero engine usedforindustrial turbine engine units worldwide. Their main role is to reduce wear,corrosion, and thermal flux, improve the engine efficiency, and promote lifeextension.

Typical materials and processes used to realize the functions are as follows:
diagram