HYDRO-ELECTRIC TURBINE COMPONENT HAVING ENHANCED LIFE SPAN AND METHOD FOR FORMING THE SAME

• Main Authors: DASAN, Biju, ANAND, Krishnamurthy, PANCHAL, Rajesh
• Format: Patent
• Language: English; French; German
• Published: 06.05.2020
• 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; HEATING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; METALLURGY; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; WEAPONS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

Hydro-electric turbine component (100) and method for enhancing life of the hydro-electric turbine component (100) by applying erosion resistant coating (250) are disclosed. The hydro-electric turbine component (100) includes a wedge-shaped substrate (210) having a tip portion (212) and at least two side portions (216). An erosion resistant coating (250) is disposed on the wedge-shaped substrate (210), such that the erosion resistant coating (250) disposed at the tip portion (212) is at least 2 times thicker than the erosion resistant coating (250) disposed at the side portions (216). The erosion resistant coating (250) has at least 99.5 percentage density. The method includes the steps of coating the tip portion (212) of the substrate (210) by a high velocity air fuel process and then coating the side portions (216) by the high velocity air fuel process.