Patent ID: 6609894
Filing Date: 2003-08-26
Classification: B23P,F01D,F05D,Y02T,Y10T

Abstract:
A gas turbine airfoil, comprising:a wall, said wall defining the perimeter of said airfoil and comprising a leading edge section and a trailing edge section, wherein a majority of the surface area of said wall comprises a first material, said first material having an oxidation resistance and a melting temperature, and at least one portion of said wall comprises a second material, said second material having an oxidation resistance that is greater than the oxidation resistance of said first material and a melting temperature that is at least about 83 degrees Celsius (about 150 degrees Fahrenheit) greater than the melting temperature of said first material, wherein said second material comprises a material selected from the group consisting of Rh, Pt, Pd, and mixtures thereof, and wherein said second material further comprises a metal selected from the group consisting of Ir, Ru, and mixtures thereof, at a level of up to about 5 atomic percent, said at least one portion of said wall located in at least one section of said wall selected from the group consisting of the leading edge section and the trailing edge section.