United Technologies Corporation

Raytheon Technologies Corporation

Rtx Corporation

Mark A Livings

Michael N Task

Frank J Trzcinski

Thomas Balzano

Prentice M Sinesi

Chelsea Brown

Walter E Olson

Mathew Gartland

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.

Chromium-enriched diffused aluminide coating

The present invention provides a Cr-rich cathodic arc coating, an article in turbine blade coated with the chromizing over cathodic arc coating, and a method to produce the coating thereof. The Cr-rich cathodic arc coating in the present invention comprises a cathodic arc coating and a diffusion coating deposited atop the cathodic arc coating to enforce hot corrosion resistance. The hardware coated with the chromizing over cathodic arc coating in the present invention is reinforced with superior-hot corrosion resistance. The present invention further provides a novel method for producing the chromizing over cathodic arc coating by re-sequencing coating deposition order. The method in the present invention is efficient and cost-reducing by eliminating some operations, e.g., DHT and peening, between the cathodic arc coating and the diffusion coating. The hot corrosion resistance in the present invention results from the high Cr content in the surface of the coating.

Chromizing over cathodic arc coating

Chromium-enriched diffused aluminide

A coating apparatus for coating interior surfaces of internal passages of a workpiece, such as a turbine engine component is provided. The coating apparatus comprises a vessel defining an internal space, a plate dividing the internal space into a first chamber and a second chamber, a divider supporting the plate, and the plate having at least one cut-out for receiving a portion of the workpiece having the internal passages to be coated.

Apparatus and method for coating internal surfaces of a turbine engine component

A coating apparatus includes a mounting member for mounting a turbine airfoil in a coating chamber. The mounting member defines a chamber therein and includes a mounting port that is adapted to receive the turbine airfoil. The mounting port provides a fluid connection between the chamber and an internal passage of the airfoil. A support member is mounted between the chamber wall and mounting member and bears the weight of the mounting member. The mounting member is unfixed relative to a chamber wall of the coating chamber. Thus, the chamber wall does not restrict the mounting member during thermal expansion and contraction of the mounting member and avoids warping of the mounting member.

Apparatus and method for coating an article

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East Windsor, CT, United States of America

Mark A Livings