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US 11,987,877 B2Granted
Chromium-enriched diffused aluminide coating
AssigneeRtx Corporation
InventorsMark A. Livings, Chelsea Brown
Life of this patent
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Abstract
A method of applying a protective coating to an article comprises the steps of a) depositing aluminum in a surface region of an article, and b) depositing chromium is the surface region of the article subsequent to step a), whereby at least a portion of the chromium replaces at least a portion of the aluminum. Another method and an article are also disclosed.
Claims10
An article, comprising:
- a base alloy;
- a corrosion-resistant coating on the base alloy, the corrosion-resistant coating containing a first region of approximately 20%-40% by weight chromium;
- an aluminum diffusion zone disposed between the base alloy and the corrosion-resistant coating wherein the aluminum diffusion zone comprises less than approximately 20% chromium by weight;
- and
- a second region immediately adjacent to the first region and extending from the first region to the aluminum diffusion zone, the second region comprising less than approximately 10% chromium by weight.
2 more elements
Dependencies are inferred from the claim text.