Patent ID: 11970953
Assignee: RTX CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC C  F | IPC C  F

Claim 0:
1. A component, comprising:
a substrate; and
a diffusion coating on a localized area of the substrate comprising an inter-diffusion zone at an interface between the diffusion coating and the substrate, the diffusion coating further comprising a non-metallic inclusions zone adjacent to an outer surface of the diffusion coating, wherein the diffusion coating is a Cr-enriched γ-Ni based layer with a Cr content of 20 wt. % minimum and Al content of 4 wt. % minimum and a thickness of between 1-3 mils (thousandth of an inch (0.0254-0.0762 mm)), and wherein the interdiffusion zone comprises elongated refractory element-rich particles, wherein the Cr content and the Al content are distributed through the diffusion coating such that a single diffusion coating layer contains the Cr content and the Al content, wherein the localized area of the substrate is an under-platform of a rotor blade and comprises at least one pocket and cooling holes, and wherein the diffusion coating is applied over the at least one pocket.