Patent ID: 7494719

Claim:
A component with a platinum-aluminum substrate surface region comprising: a component substrate, having a composition based on a nickel alloy or a titanium alloy and composed of one or more constituents, and having a substrate surface; and a substrate surface region at the component surface formed by diffusion of platinum and aluminum into the substrate surface, the substrate surface region comprising platinum, aluminum, and at least one constituent of the substrate composition, wherein at least one of the platinum content and the aluminum content is essentially constant in a zone of the substrate surface region, and said zone comprises at least 20% of a region bounded on one side by the substrate surface or a point directly beneath the substrate surface, and bounded on the other side by a region depth at which the platinum content is 5 wt % or less, the aluminum content is 8 wt % or less, and the platinum content and the aluminum content remain below 5 wt % and 8 wt %, respectively, beyond the region depth, wherein the integrated aluminum content in the substrate surface region is less than 18 wt %.