Applying a protective coating on a substrate and method for manufacturing the protective layer

摘要

The substrate, and especially the surface of a turbine or an aero engine, is covered by a protective layer resistant to high temperatures, oxidizing and corrosion. The layer is applied by thermo-chemical deposition and especially an atmospheric plasma spray (APS), using aluminum (Cr,Si), with a specific high aluminum deposition activity. The layer is structured to give increasing alloy gradients from the substrate surface to the outer layer surface together with isolated globular metal oxide particles.