PVD or CVD coating fan blades has two important affects. First, it maintains the surface finish of the blade for much longer by significantly reducing wear. Second, coatings make the surface finish smoother for better fuel efficiency.
Aerospace engine components operate in extreme conditions, so the bond strength of coatings like PVD and CVD needs to be maximised.
Wet blasting is highly effective at producing the perfect surface finish on blades and other aerospace components for coating. It does this by creating a specific Ra surface roughness for the best possible coverage and adhesion of coatings.
