Ion implantation of turbine engine rotor component

• Main Authors: WEIMER, MICHAEL JAMES, DAROLIA, RAMGOPAL
• Format: Patent
• Language: English; French; German
• Published: 03.11.2010
• Subjects: BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ENGINE PLANTS IN GENERAL; HEATING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; WEAPONS

A turbine engine rotor component (30), such as a compressor or turbine disk or seal element, is protected from corrosion by implanting aluminum or chromium ions, or mixtures thereof, on the surface (62) of the component (30). Additional metal ions, such as rare earth and reactive elements, may also be implanted on the surface of the component (30). The component (30) may be heated in a nonoxidizing atmosphere at a specified temperature and time to diffuse the ions into the surface. The component (30) is typically then heated or maintained at an elevated temperature in the presence of oxygen to form an oxide coating (60) on the surface of the component (30).