General Electric Company

Other

Ramgopal Darolia

Joseph David Rigney

Irene T Spitsberg

Mark Daniel Gorman

Ching-Pang Lee

Robert Edward Schafrik

Brett Allen Rohrer Boutwell

William Scott Walston

Brian Thomas Hazel

Jeffrey Allan Pfaendtner

Bangalore Aswatha Nagaraj

Boris Alexeevich Movchan

Melvin Robert Jackson

Curtis Alan Johnson

Ji-Cheng Zhao

David John Wortman

Robert William Bruce

Michael James Weimer

David F Lahrman

Yan Gao

Edward H Goldman

Gillion Herman Marijnissen

Eric Richard Irma Carolus Vergeldt

Annejan Bernard Kloosterman

Venkat Subramaniam Venkataramani

Michael Francis Xavier Gigliotti

Brett Allen Boutwell

Reed Roeder Corderman

Liang Jiang

Yuriy E Rudoy

Leonella M Nerodenko

Bernard Patrick Bewlay

Pazhayannur Ramanathan Subramanian

Nripendra Nath Das

Matthew Mark Weaver

Richard John Grylls

Joshua L Miller

Anthony Mark Thompson

Christine Govern

Kevin S O'Hara

Richard Arthur Nardi, Jr

Robert D Field

Earl W Ross

Ming Fu

David Michael Matey

Dennis Martin Corbly

Anatolii Ivanovich Ustinov

Ronald Scott Bunker

Jon Conrad Schaeffer

James Anthony Ruud

John Frederick Ackerman

Robert A Miller

Roger Dale Wustman

Richard DiDomizio

Harvey M Maclin

Warren Davis Grossklaus, Jr

Theodore Robert Grossman

Curtiss Mitchell Austin

James R Dobbs

Matthew Bernard Buczek

Steven R LeClair

Ronald Dean Noebe

Voramon Supatarawanich Dheeradhada

Carl S Wukusick

John Francis Maguire

Leo Buchakjian, Jr

Venkat Subramanian Venkataramani

James Anthony Ketzer

Deborah Anne Schorr

Murray Sawyer Smith

Paul Wencil Stanek

Elissa Hae-Kyung Lee

David R Clarke

William C Fitzgerald

Antonio Mogro-Campera

Robert Edwards Schafrik

Eric Richad Irma Carolus Vergeldt

Mark Daniel Gormann

Leonella M Kerodenko

Boris A Movchan

Anatoli Ivanovich Ustinov

Harvey Michael Maclin

A coating and process for depositing the coating on a substrate. The coating is a nickel aluminide overlay coating of predominantly the beta (NiAl) and gamma-prime (NiAl) intermetallic phases, and is suitable for use as an environmental coating and as a bond coat for a thermal barrier coating (TBC). The coating can be formed by depositing nickel and aluminum in appropriate amounts to yield the desired beta+gamma prime phase content. Alternatively, nickel and aluminum can be deposited so that the aluminum content of the coating exceeds the appropriate amount to yield the desired beta+gamma prime phase content, after which the coating is heat treated to diffuse the excess aluminum from the coating into the substrate to yield the desired beta+gamma prime phase content.

Coating systems containing beta phase and gamma-prime phase nickel aluminide

A coating process and system suitable for use on components subjected to high temperatures. The coating system includes an overlay coating of predominantly B2 phase rhodium aluminide (RhAl) intermetallic compound containing about 25 to about 90 atomic percent rhodium, about 10 to about 60 atomic percent aluminum, optionally up to a combined total of about 25 atomic percent of one or more platinum group metals chosen from the group consisting of platinum, palladium, ruthenium, and iridium, and up to about 20 atomic percent of the base metal and alloying constituents of the substrate. The RhAl intermetallic coating may serve as an environmental coating, a diffusion barrier layer for an overlying environmental coating, or both, with or without an outer ceramic coating.

Coating systems containing rhodium aluminide-based layers

A process and apparatus for depositing a ceramic coating, such as a thermal barrier coating (TBC) for a gas turbine engine component. The process deposits a coating whose composition includes multiple oxide compounds and a carbon-based constituent, e.g., elemental carbon, carbides, and carbon-based gases. The process uses at least one evaporation source to provide multiple different oxide compounds and at least one carbide compound comprising carbon and an element. The evaporation source is evaporated to produce a vapor cloud that contacts and condenses on the component surface to form the ceramic coating, and particularly so that the coating comprises the oxide compounds, an oxide of the element of the carbide compound, and the carbide compound and/or a carbon-containing gas. The process is carried out with an apparatus comprising a coating chamber in which the evaporation source is present, and a device for evaporating the evaporation source.

Process and apparatus for depositing a ceramic coating

A method for joining a plurality of single crystal members includes providing a bonding foil with a composition match with that of the members and with a bonding temperature within the gamma prime solution temperature range of the members, but below the melting temperature of the foil and below the incipient melting temperature of the members. The foil is disposed between and in contact with opposing members to be joined while heated to and held at the bonding temperature for at least 10 hours.

Method for joining single crystal members and improved foil therefor

A coating process for an article having a substrate formed of a metal alloy that is prone to the formation of a secondary reaction zone (SRZ). The coating process forms a coating system that includes an aluminum-containing overlay coating and a stabilizing layer between the overlay coating and the substrate. The overlay coating contains aluminum in an amount greater by atomic percent than the metal alloy of the substrate, such that there is a tendency for aluminum to diffuse from the overlay coating into the substrate. The stabilizing layer is predominantly or entirely formed of at least one platinum group metal (PGM), namely, platinum, rhodium, iridium, and/or palladium. The stabilizing layer is sufficient to inhibit diffusion of aluminum from the overlay coating into the substrate so that the substrate remains essentially free of an SRZ that would be deleterious to the mechanical properties of the alloy.

Process of applying a coating system

Thermal barrier coating systems for use with hot section components of a gas turbine engine include an inner layer overlying a bond coated substrate and a top layer overlying at least a portion of the inner layer. The inner layer includes a thermal barrier material such as yttria-stabilized zirconia. The top layer includes a rare earth aluminate. The thicknesses and microstructures of the layers may be varied depending on the type of component to be coated. Articles incorporating the thermal barrier coating system exhibit improved resistance to CMAS infiltration.

Thermal barrier coating systems including a rare earth aluminate layer for improved resistance to CMAS infiltration and coated articles

Nb&#x2014;Si based alloy articles comprising a Nb&#x2014;Si based alloy upon which is disposed an environmentally-resistant coating are described. They include a coating comprising at least one phase selected from the group consisting of M(Al,Si), M(Al,Si), and MSiAl, wherein M is one or more of Nb, Ti, Hf, Cr. Such coating can improve the environmental (e.g., in oxidation-promoting environments) resistance of a Nb&#x2014;Si based alloy and alloy articles. Methods for preparing these articles are described as well.

Nb-Si based alloys having an Al-containing coating, articles, and processes

A coating system and coating method for damping vibration in an airfoil of a rotating component of a turbomachine. The coating system includes a metallic coating on a surface of the airfoil, and a ceramic coating overlying the metallic coating. The metallic coating contains metallic particles dispersed in a matrix having a metallic and/or intermetallic composition. The metallic particles are more ductile than the matrix, and have a composition containing silver and optionally tin. The method involves ion plasma cleaning the surface of the airfoil before depositing the metallic coating and then the ceramic coating.

Method for vibrational damping of gas turbine engine airfoils

A gas turbine engine component and coating system including a superalloy substrate having a coating system disposed thereon. A bond coating may be applied to the substrate. An adherent layer of ceramic material forming a thermal barrier coating is present on the bond coat layer. A topcoat layer overlies the thermal barrier coating. The topcoat layer includes greater than about 20 wt % yttria.

Yttria containing thermal barrier coating topcoat layer and method for applying the coating layer

In accordance with an embodiment of the invention, an article is provided. The article comprises a substrate comprised of silicon containing material, an environmental barrier coating (EBC) overlying the substrate and a thermal barrier coating (TBC) on the environmental barrier coating. The thermal barrier coating comprising a compound having a rhombohedral phase.

Method for producing a thermal barrier coating/environmental barrier coating system

A coating process and system for an article having a substrate formed of a metal alloy that is prone to the formation of a secondary reaction zone (SRZ). The coating system includes an aluminum-containing overlay coating and a stabilizing layer between the overlay coating and the substrate. The overlay coating contains aluminum in an amount greater by atomic percent than the metal alloy of the substrate, such that there is a tendency for aluminum to diffuse from the overlay coating into the substrate. The stabilizing layer is predominantly or entirely formed of at least one platinum group metal (PGM), namely, platinum, rhodium, iridium, and/or palladium. The stabilizing layer is sufficient to inhibit diffusion of aluminum from the overlay coating into the substrate so that the substrate remains essentially free of an SRZ that would be deleterious to the mechanical properties of the alloy.

Ni-base superalloy having a coating system containing a stabilizing layer

In accordance with an embodiment of the invention, a thermal barrier coating for inclusion in a thermal barrier coating system is provided. The thermal barrier coating comprises a compound having a rhombohedral phase. In accordance with another embodiment of the invention, a thermal barrier coating is provided that comprises a compound having the formula of: ABO, wherein A is at least one rare earth element; and B is selected from the group consisting of Zr, Hf and mixtures thereof.

Method for producing a thermal barrier coating on a substrate

A thermal barrier coating (TBC) for a component intended for use in a hostile environment, such as a component of a gas turbine engine. The TBC exhibits improved impact and erosion resistance as a result of being a composite material consisting essentially of particles of a ceramic reinforcement material dispersed in a ceramic matrix material. The ceramic reinforcement material has a yield strength greater than the ceramic matrix material at about 1100&#xb0; C., and the particles of the ceramic reinforcement material have an average maximum dimension of greater than five micrometers.

Composite thermal barrier coating with improved impact and erosion resistance

A ceramic material suitable for use as a coating, such as a porous thermal barrier coating (TBC) on a component intended for use in a hostile thermal environments. The coating material consists essentially of zirconia stabilized by at least one rare-earth metal oxide and further alloyed to contain a limited amount of titania. Rare-earth metal oxides of particular interest are lanthana, ceria, neodymia, europia, gadolinia, erbia, dysprosia, and ytterbia, individually or in combination. Zirconia, the rare-earth metal oxide, and titania are present in the coating material in amounts to yield a predominantly tetragonal phase crystal structure. The amount of titania in the coating is tailored to allow higher levels of stabilizer while maintaining the tetragonal phase, i.e., avoiding the cubic (fluorite) phase.

Ceramic coating material

Growing community of inventors

West Chester, OH, United States of America

Ramgopal Darolia