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US 10,968,352 B2Granted
Nitride free vapor deposited chromium coating
AssigneeRaytheon Technologies Corporation
InventorsKevin L. Collins, Michael J. Minor
Life of this patent
Estimating the term…
Abstract
A process for applying a chromium layer on a substrate, specifically a turbine engine airfoil, by contacting at least a portion of the substrate with a gaseous chromium wherein the gaseous chromium is generated from a substantially nitrogen free source.
Claims7
A coated substrate, comprising:
- a substrate having a surface;
- and
- a chromium layer deposited directly on the surface, and substantially free of nitrides on the chromium layer, wherein the substrate has internal passageways, and the coating is on the internal passageways.
A coated substrate, comprising:
- a substrate having a surface,
- and a chromium layer deposited directly on the surface, and substantially free of nitrides on the chromium layer, wherein the substrate has internal passageways, and the coating is on the internal passageways, wherein the coated substrate is produced by:
- contacting at least a portion of the substrate with a vapor comprising a gaseous chromium wherein the gaseous chromium is generated from a mixture comprising a chromium source and a substantially nitrogen free activator.
Dependencies are inferred from the claim text.