Patent ID: 7316850
Filing Date: 2008-01-08
Classification: C22C,C23C,F01D,Y10S,Y10T

Abstract:
1. A coating for a superalloy substrate, the coating comprising: a first coating layer formed over the substrate and comprising an alloy represented by the formula MCrAlYX wherein M comprises at least one member of the group consisting of Ni, Co, and Fe, and X comprises Pt and at least one member of the group consisting of Hf, Si, Zr, Ta, Re, and Ru, the weight percentage of X to the total composition being within the range of about 0.1% to about 28.0; and at least one additional coating layer on either side of the first coating layer, wherein the at least one additional coating layer includes a modified MCrAlY alloy that does not include Pt.