General Electric Company

James Anthony Ruud

Mohan Manoharan

Molly Maureen Gentleman

Anthony Yu-Chung Ku

Vidya Ramaswamy

Lawrence Bernard Kool

Larry Steven Rosenzweig

Leonardo Ajdelsztajn

Margaret Louise Blohm

Seth Thomas Taylor

Emad Andarawis Andarawis

Joseph David Rigney

James Scott Vartuli

Gregory Scot Corman

Samhita Dasgupta

Daniel Gene Dunn

Sergio Paulo Martins Loureiro

Jeffrey Allan Pfaendtner

Mahadevan Balasubramaniam

John W Devitt

Andrew Joseph Detor

James Claude Carnahan

Shankar Sivaramakrishnan

Kenneth Walter Browall

Melvin Robert Jackson

Alok Mani Srivastava

Anant Achyut Setlur

Holly Ann Comanzo

Venkat Subramaniam Venkataramani

Curtis Alan Johnson

Michael James Weimer

Dong-Sil Park

Milivoj Konstantin Brun

Chellappa Balan

William Hullinger Huber

Ralph James Carl, Jr

Minesh Ashok Shah

Andrew Maxwell Peter

Kevin Paul McEvoy

Kevin Henry Janora

Xiao-Dong Sun

Brian Harvey Pilsner

Ramgopal Darolia

Wei Wei

Jerome Johnson Tiemann

William Thomas Carter

Jon Conrad Schaeffer

Bin Wei

Irene T Spitsberg

John Eric Tkaczyk

Wayne Charles Hasz

Robert John Zabala

Canan Uslu Hardwicke

Ambarish Jayant Kulkarni

Andrei Tristan Evulet

Ke Liu

Ji-Cheng Zhao

Stephen Francis Rutkowski

John Patrick Lemmon

Pazhayannur Ramanathan Subramanian

Lawrence E Szala

Ann Melinda Ritter

Dennis Michael Gray

Surinder Singh Pabla

Peter Micah Sandvik

Stephen Joseph Ferrigno

William Scott Walston

Peter Joel Meschter

Chang Wei

Vinayak Tilak

Hrishikesh Keshavan

Krishnamurthy Anand

David Paul Mourer

Richard DiDomizio

Anis Zribi

Atanu Saha

D Sangeeta

Michael John Bowman

Hongyu Wang

Wei-Cheng Tian

Anthony Mark Thompson

Laurent Cretegny

Mark Alan Rosenzweig

Joshua Lee Margolies

Brett Allen Rohrer Boutwell

Timothy Hanlon

Dalong Zhong

Steven Alfred Tysoe

Justin John Gambone, Jr

Oltea Puica Siclovan

Kalaga Murali Krishna

Yan Gao

Scott Sheridan Smith

Patrick Roland Lucien Malenfant

Timothy Joseph Rehg

Patrick Daniel Willson

Louis Andrew Schick

Kenneth Rees Bain

Stephen Duane Sanborn

Matthias Finkenrath

A ceramic fiber processing apparatus and method for processing ceramic fibers for the manufacture of ceramic matrix composites (CMCs) is provided. The apparatus includes a frame including a plurality of unidirectional ceramic fibers wound thereabout and extending across a void therein the frame to define a first planar array of ceramic fibers and a second planar array of ceramic fibers. During use, the frame is disposed in the ceramic fiber processing apparatus in a manner to enable gripping of the first planar array of ceramic fibers with a first gripper assembly and gripping of the second planar array of ceramic fibers with a second gripper assembly. A cutting mechanism provides cutting of the plurality of unidirectional ceramic fibers to separate the first planar array of ceramic fibers and the second planar array of ceramic fibers from one another.

Apparatus and methods for gripping flexible materials

A system and method described herein relate to applying an overlay metal-based coating to a metal-based substrate. An article is provided, which includes a metal-based substrate having an overlay metal-based coating disposed on the substrate at an interface. The interface is configured such that a crack formed within the overlay metal-based coating and approaching the interface has a propagation path that is more energetically favorable along the interface than through the interface and into the metal-based substrate.

Coated article and method for making

The present invention is directed to repair compositions for thermal barrier coatings and methods of use thereof. The repair compositions include a ceramic composition, a colloidal solution, an aqueous binder, an aqueous dispersant, and an aqueous ammonia solution. The ceramic composition includes a first population of yttria-stabilized zirconia particles having a mean diameter from about 250 nm to about 1000 nm, a second population of yttria-stabilized zirconia particles having a mean diameter from about 2 &#x3bc;m to about 10 &#x3bc;m, and a third population of yttria-stabilized zirconia particles having a mean diameter from about 20 &#x3bc;m to about 250 &#x3bc;m. One method includes depositing the repair layer onto the damaged region, the repair layer including the repair composition, and heat treating the repair layer.

Thermal barrier coating repair compositions and methods of use thereof

The present application provides methods and apparatus for processing ceramic fibers for the manufacture of ceramic matrix composites (CMCs). One method may include providing at least one frame including a planar array of unidirectional ceramic fibers extending across a void thereof. The method may further include depositing a coating on the ceramic fibers of the at least one frame via a chemical vapor deposition (CVD) process. The method may also include impregnating the coated ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg, such as a prepreg tape. The ceramic fibers may be substantially SiC fibers, for example.

Apparatus and methods for processing ceramic fiber

The present application provides Calcia-Magnesia-Alumina-Silica (CMAS) (or molten silicate) resistant thermal barrier coatings (TBC). The coatings include elongate growth domains of non-equiaxed, randomly arranged overlapping grains or splats. The elongate growth domains include overlapping individual, randomly distributed splats of tough and soft phases. In some embodiments, the elongate growth domains are formed via air plasma spray. In some embodiments, the tough phases are at least partially stabilized zirconia and/or hafnia compositions, and the soft phases are CMAS (or molten silicate) reactive or resistant compositions. Within each elongate growth domain, the mixture of the tough and soft phases act together to limit penetration of CMAS and also provide sufficient domain toughness to minimize cracking forces produced during crystallization of infiltrated CMAS. The soft phases may react with the CMAS and increase its melting point, increase its viscosity, and reduce the destabilization of the tough phases.

CMAS resistant thermal barrier coatings

The present application provides methods and apparatus for processing ceramic fibers for the manufacture of ceramic matrix composites (CMCs). One method may include providing at least one frame including a planar array of unidirectional ceramic fibers extending across a void thereof. The method may further include at least one of depositing a coating on the ceramic fibers of the at least one frame via a chemical vapor deposition (CVD) process and impregnating the ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg. In some embodiments, the ceramic fibers of the planar array may include a coating, and the method may include impregnating the coated ceramic fibers with a slurry including a ceramic matrix precursor composition to form at least one CMC prepreg.

Methods of processing ceramic fiber

An article includes a substrate comprising a precipitate-strengthened alloy and a coating disposed over the substrate. The alloy comprises a) a population of gamma-prime precipitates, the population having a multimodal size distribution with at least one mode corresponding to a size of less than about 100 nanometers; or b) a population of gamma-double-prime precipitates having a median size less than about 300 nanometers. The coating comprises at least two elements, and further comprises a plurality of prior particles. At least a portion of the coating is substantially free of rapid solidification artifacts. Methods for fabricating the article and for processing powder useful for fabricating the article are also provided.

Coated articles and method for making

Coatings for substrates, such as superalloy substrates, are provided. The coating can include: 15 wt % to 45 wt % cobalt; 20 wt % to 40 wt % chromium; 2 wt % to 15 wt % aluminum; 0.1 wt % to 1 wt % yttrium; and nickel. The coatings may include nickel, cobalt, chromium and aluminum, and other optional additives to improve oxidation and corrosion resistance of the substrate without significant debit to its mechanical properties.

Coatings for metallic substrates

A method for fabricating thermal barrier coatings. The thermal barrier coatings are produced with a fine grain size by reverse co-precipitation of fine powders. The powders are then sprayed by a solution plasma spray that partially melts the fine powders while producing a fine grain size with dense vertical cracking. The coatings comprise at least one of 45%-65% YbOthe balance zirconia (zirconium oxide), Yb/Y/Hf/Ta the balance zirconia (zirconium oxide) and 2.3-7.8% La, 1.4-5.1% Y and the balance zirconia (zirconium oxide) and are characterized by a thermal conductivity that is about 25-50% lower than that of thermal barrier coatings comprising YSZ. The thermal barrier coatings also are characterized by at least one of excellent erosion resistance, fracture toughness and abrasion resistance.

Architectures for high temperature TBCs with ultra low thermal conductivity and abradability and method of making

One aspect of the present invention includes an article. The article includes a substrate and a coating disposed on the substrate, wherein the coating includes a plurality of cermet particles bonded along their prior particle boundaries. The plurality of cermet particles have a median particle size less than about 5 microns and less than 25 percent of the plurality of cermet particles include melted and re-solidified particles. Gate valves are also presented.

Coating methods and coated articles

A coating comprising a first surface and a second surface is provided. The coating includes a plurality of growth domains. An orientation of at least one growth domain of the plurality of growth domains is non-vertical with respect to the first surface of the coating. One or more growth domains of the plurality of growth domains comprise a plurality of at least partially melted and solidified particles.

Thermal barrier coating systems and methods of making and using the same

A method for manufacturing a fuel contacting component that facilitates reducing coke formation on at least one surface of the fuel contacting component is disclosed herein. The method includes applying a slurry composition including a powder including aluminum to the component surface, wherein the fuel contacting component is formed by an additive manufacturing process. The slurry composition is heat treated to diffuse the aluminum into the component surface. The heat treatment comprises forming a diffusion aluminide coating on the component surface, wherein the diffusion coating comprises a diffusion sublayer formed on the component surface and an additive sublayer formed on the diffusion sublayer. The method further comprises removing the additive sublayer of the diffusion aluminide coating with at least one aqueous solution such that the diffusion sublayer and the component surface are substantially unaffected, wherein the diffusion layer facilitates preventing coke formation on component surface.

Methods for manufacturing an additively manufactured fuel contacting component to facilitate reducing coke formation

Different types of apparatus for fabricating a deposit, method of deposition and an article are presented. The apparatus include a thermal spray gun comprising a combustion chamber, combustion zone, an air injection port, a fuel injection port, a nozzle and a liquid injection port. The combustion zone exists between the inlet side and outlet side of the combustion chamber. The method includes, among other things, providing a fuel and an oxidizer inside the combustion zone, initiating combustion inside the combustion zone, and directing products of the combustion toward the outlet side to create a combustion product stream. The method also includes introducing a feedstock mixture comprising a feedstock material and a liquid into the combustion product stream to create an entrained feedstock stream, and expelling the entrained feedstock stream from the spray gun through a nozzle to form a deposit on a surface of the article.

Combustion cold spray

An article and method of forming the article are disclosed. The article includes a substrate, an overlay bond coat deposited over the substrate and a topcoat deposited over the bond coat. The bond coat of the article includes a plasma affected region proximate to an interface between the bond coat and the topcoat, and the plasma affected region includes an elongated intergranular phase. The method of depositing includes adjusting the plasma spray conditions so as to form the plasma affected region proximate to an interface between the bond coat and the topcoat, and elongated intergranular phases in the plasma affected regions.

Article formed by plasma spray

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Delmar, NY, United States of America

James Anthony Ruud