To better protect high-pressure turbine blades against the searing heat inside the engine, they are coated with a ceramic material. For the purpose, Ceramic Coating Center (CCC) uses an advanced technique, EB-PVD (Electron-Beam Physical Vapor Deposition). In the process, a ceramic material (partially yttria-stabilized zirconia) is molten and vaporized in a vacuum using two electron beams. The resulting condensate precipitates onto the blade surface, forming a ceramic protective surface film that, owing to its columnar structure, is highly resistant to thermal stress fluctuations.
CCC is a 50/50 joint venture of MTU Aero Engines and Safran Aircraft Engines Services in Châtellerault, France.