General Electric Company

Elissa H Lee

Bangalore Aswatha Nagaraj

Joseph David Rigney

Michael James Weimer

Jeffrey Allen Conner

Eric Alan Estill

Norbert O Maurer

A coated article is provided with a coating stabilizing portion in a coating combination on a substrate of the article. The coating combination includes a coating diffusion portion on the substrate and an outer coating portion outwardly from the coating diffusion portion. The coating stabilizing portion is provided between the coating diffusion portion and the outer coating portion to inhibit diffusion of undesirable elements to an interface with the outer coating portion and to enhance mechanical properties.

Coated article with internal stabilizing portion and method for making

A gas turbine component has a platform, a shank extending downwardly from the platform, and an airfoil extending upwardly from the platform. The gas turbine component is coated by first applying a first chromide layer overlying the base metal of at least a portion of the shank and interdiffused therewith, and second applying a second coating on at least a portion of the airfoil. The second coating optionally includes a second chromide layer contacting the base metal of the airfoil and interdiffused therewith, and includes an aluminide protective layer overlying the second chromide layer. The first chromide layer on the shank and the second chromide layer on the airfoil may be within the same chromium composition range (for example, from about 20 to about 30 weight percent chromium) and thickness range (for example, from about 0.001 to about 0.002 inch), and deposited at the same time.

Coated turbine component and its fabrication

Growing community of inventors

Cincinnati, OH, United States of America

Elissa H Lee