Patent ID: 6131800
Filing Date: 2000-10-17
Classification: B23K,Y10T

Abstract:
A method of applying a surface coating to a stator vane of a gas turbine, the stator vane comprising a platform with an outer surface connected to the stator of the gas turbine and an airfoil connected to the platform, the method comprising the steps of(a) each stator vane is provided as s singlet,(b) a base layer coating affording resistance to oxidation is applied to surfaces of said stator vane and said outer surface of the platform to be exposed to hot gases of the gas turbine, and a top layer coating affording thermal resistance is applied to all coated surfaces of said stator vane and the outer surface of the platform, and(c) welding the stator vanes together, wherein(d) a welding filler material is placed between said walls of two adjacent platforms of said stator vane,(e) welding same singlets to one another at the margins of walls of said platform to said welding filler material.