General Electric Company

Other

Michael Howard Rucker

Lawrence Bernard Kool

David Edwin Budinger

Bernard Patrick Bewlay

Don Mark Lipkin

Brian Thomas Hazel

Andrew Jay Skoog

Richard Ludwig Schmidt

Jane Ann Murphy

Bhupendra Kumar Gupta

Richard Roy Worthing, Jr

Rudolfo Viguie

Venkata Vijayaraghava Nalladega

Majid Nayeri

Nicholas Shawn Woodard

Albert King

John Louis Cupito

Mark David Veliz

Richard R Worthing Jr

Howard Farr

Systems and methods for automatic detection of defects in a coating of a component are provided. In one aspect, a coating inspection system is provided. The coating inspection system includes a heating element operable to impart heat to the component as it traverses relative thereto. An imaging device of the system captures images of the component as the heating element traverses relative to the component and applies heat thereto. The images indicate the transient thermal response of the component. The system can generate a single observation image using the captured images. The system can detect and analyze defects using the generated single observation image.

Systems and methods for automatic detection of coating defects

A method of repairing damaged airfoils. The method comprises the steps of stripping thermal barrier coatings from the airfoil. After the coatings are removed, cracks are removed from the airfoil. Cracks that appear in the bond coat area over the airfoil fillet portion are removed by locally grit blasting the fillet portion of the airfoil. This operation also results in locally removing the bond coating from the fillet portion. Cracks and other damage sustained by the airfoil tip are removed and replaced by welding superalloy material. The airfoil then may be cleaned by thermal etching. The airfoil is then placed in a plating tool permitting preferential plating of airfoil areas from which plating has been removed. After plating, the airfoil is then heat treated to diffuse the platinum coating with the superalloy substrate materials. The diffusion heat treated airfoil is aluminided by any aluminiding process, forming a PtAl coating.

Method for refurbishing PtAl coating to turbine hardware removed from service

A method for forming a nickel aluminide based coating on a metallic substrate includes providing a first source for providing a significant portion of the aluminum content for a coating precursor and a separate nickel alloy source for providing substantially all the nickel and additional alloying elements for the coating precursor. Cathodic arc (ion plasma) deposition techniques may be utilized to provide the coating precursor on a metallic substrate. The coating precursor may be provided in discrete layers, or from a co-deposition process. Subsequent processing or heat treatment forms the nickel aluminide based coating from the coating precursor.

Nickel aluminide coating systems and coated articles

A method for selectively removing an aluminum-poor overlay coating from a substrate of a component, which as a result of its low aluminum content is highly resistant to a selective stripping solution. The method entails diffusing aluminum into the overlay coating to form an aluminum-infused overlay coating having an increased aluminum level in at least an outer surface thereof. The diffusion step is carried out so that the increased aluminum level is sufficient to render the aluminum-infused overlay coating removable by selective stripping. The outer surface of the aluminum-infused overlay coating is then contacted with an aqueous composition to remove the aluminum-infused overlay coating from the substrate. The aqueous composition includes at least one acid having the formula HAF, and/or precursors thereof, wherein A is Si, Ge, Ti, Zr, Al, and/or Ga, and x is from 1 to 6.

Method for selectively removing coatings from metal substrates

Disclosed herein is a method for aluminiding an internal passage of a metal substrate comprising injecting a slurry composition that comprises a powder comprising aluminum, a binder selected from the group consisting of colloidal silica, an organic resin, and a combination thereof, into the internal passage; applying compressed air to the internal passage to facilitate distribution of the slurry composition throughout the internal passage; and, heat treating the slurry composition under conditions sufficient to remove volatile components from the composition, and to cause diffusion of aluminum into a surface of the internal passage.

Method for aluminizing serpentine cooling passages of jet engine blades

A method for depositing a platinum-group-containing layer on a substrate includes furnishing the substrate, and preparing a water-base paint containing metallic platinum-group powder, water, and a binder. The method further includes spraying the water-base paint overlying the substrate to form a platinum-group-containing layer, and thereafter heating the platinum-group-containing layer to interdiffuse the platinum-group-containing layer.

Method for depositing a platinum-group-containing layer on a substrate

A method is provided for electroplating a high temperature coating onto an airfoil. The method includes providing a shield having a recess defining one or more walls conforming to the shape of at least a portion of a pressure side and a suction side of the airfoil to be electroplated, introducing the portions of the pressure side and the suction side of the airfoil to be electroplated into the recess of the shield, attaching an anode and cathode to the airfoil, submerging at least the shield and the portions of the pressure side and the suction side of the airfoil to be electroplated into an electroplating tank containing an electrolyte, and electroplating a coating of a high temperature resistant metal onto the portions of the pressure side and the suction side of the airfoil to be electroplated to a predetermined minimum thickness.

Method for airfoil electroplating

A nickel-base braze material suitable for closing holes in a high temperature component, such as a tip cap hole in a turbine blade. The braze material comprises first and second filler materials and a binder. The first filler material comprises particles of a first alloy, and the second filler material comprises particles of at least a second alloy having a lower melting temperature than the first alloy. The second alloy consists essentially of, by weight, about 8 to about 23 percent chromium, about 4 to about 18 percent cobalt, about 1.5 to about 6.0 percent tantalum, about 1.0 to about 6.0 percent aluminum, about 0.3 to about 1.5 percent boron, about 2.0 to about 6.0 percent silicon, up to 0.2 percent carbon, the balance being nickel and incidental impurities.

Growing community of inventors

Cincinnati, OH, United States of America

Michael Howard Rucker