General Electric Company

Ge Infrastructure Technology, LLC

Amphenol Thermometrics, Inc.

Mohandas Nayak

Sundeep Kumar

Venkat Subramaniam Venkataramani

Mohamed Rahmane

Paul Mathew

Shankar Sivaramakrishnan

Surinder Singh Pabla

Kalaga Murali Krishna

Shahana Chatterjee

Alok Mani Srivastava

John Patrick Lemmon

Yuk-Chiu Lau

Vinayak Tilak

Krishnamurthy Anand

Atanu Saha

Digamber Gurudas Porob

Gopi Chandran Ramachandran

Guruprasad Sundararajan

Geetha Karavoor

Padmaja Parakala

Ravikumar Hanumantha

Sudhakar Reddy

Sathisha Chikkabikkodu Hanum

Arunabh Basak

Jun Cui

Sheela Kollali Ramasesha

Anil Raj Duggal

Holly Ann Comanzo

Hao Huang

Wayne Charles Hasz

Ronald Ralph Cairo

Steven Jude Duclos

Paul Michael Smigelski, Jr

Adnan Kutubuddin Bohori

David Vincent Bucci

James Scott Vartuli

Robert Joseph Lyons

James Anthony Brewer

Weijun Yin

Janakiraman Narayanan

Larry Steven Rosenzweig

Monty Lee Shelton

Reza Sarrafi-Nour

Martin Kin-Fei Lee

Badri Narayan Ramamurthi

Oltea Puica Siclovan

Kevin Paul McEvoy

Eklavya Calla

Raghavendra Rao Adharapurapu

Linda Yvonne Jacobs

Aharon Yakimov

Nagaveni Karkada

Shalini Thimmegowda

Biju Dasan

Deoras Prabhudharwadkar

Michael Colan Moscinski

Balasubramaniam Vaidhyanathan

Arundhati Sengupta

Kristen Hall Brosnan

Gregory Michael Gratson

Vijay Kumar Srivastava

Darren Michael Stohr

Krishnendu Saha

Joshua R Salisbury

Vipin Raju S

Hemantkumar Narsinham Aiyer

Julie Marie Kuhn

Stephen Thomas Tedeschi

Preeti Singh

Mallikarjuna Heggadadevanapura Thammaiah

Sudhakar Eddula Ruddy

An anti-fretting coating composition that is operationally stable at temperatures of 800° F. to 2650° F. is provided. The anti-fretting coating composition primarily includes cobalt and aluminum oxide and may also include other modifying phases that enhance the overall tribological performance. A component coated with the anti-fretting coating composition is also provided. The component includes a substrate having a first contact surface shaped to cooperate with a second contact surface of an abutting member in a manner which can develop wear between the first contact surface and the second contact surface. The first contact surface includes an anti-fretting coating thereon formed from the disclosed anti-fretting coating composition.

Anti-fretting coating composition and coated components

A composition comprising an yttria-rare earth-doped zirconium oxide is provided that has a tetragonal structure and a formula: YLnCeZrOwhere Ln is a mixture of rare earth elements; 0.01≤a≤0.051; 0.01≤b≤0.051 such that Y and each rare earth element is included in the composition in substantially equal molar amounts; 0.05≤(a+b)≤0.07; 0≤x≤0.051; and 0≤δ≤0.05. Methods of forming a coating that includes this composition, along with the resulting coated components, are also provided.

Low thermal conductivity, high toughness tbc compositions

A composition, a machine component coated with the same, and a method of coating the machine component are provided. The composition includes a CoNiCrAlY alloy, where three or more elements of the CoNiCrAlY alloy are present in equimolar amounts, one of the three or more elements of the CoNiCrAlY alloy being aluminum (Al), and where a molar fraction of Al is between about 0.20 and about 0.25. The composition further includes a transition metal boride including at least one of: cobalt boride (CoB), titanium boride (TiB), zirconium boride (ZrB), tantalum boride (TaB), niobium boride (NiB), or molybdenum boride (MoB), and a refractory alloy.

Boride-reinforced aluminum-containing high entropy alloy composition

A method of forming a coating on a component of an electrical machine is presented. The method includes coating a surface of the component with a ceramic material, via an electrophoretic process, to form a first coating. The method further includes contacting the first coating deposited by the electrophoretic process with a polymeric material to form a second coating. The method furthermore includes curing or melting the polymeric material in the second coating to form the coating including the ceramic material dispersed in a polymer matrix.

Methods of depositing coatings on electrical machine components

A filled abradable seal component, an associated method of manufacturing, and a turbomachine including the filled abradable seal component are disclosed. The method includes positioning the abradable seal component including a plurality of honeycomb cells, applying a filler material on the abradable seal component to fill the plurality of honeycomb cells, and curing the filler material at a temperature below 250 degrees Celsius to produce the filled abradable seal component. The filler material includes an abradable material, a binder material, and a fluid catalyst. The abradable material includes at least one of nickel chromium aluminum-bentonite, cobalt nickel chromium aluminum yttrium-polyester, cobalt nickel chromium aluminum yttrium-boron nitride, aluminum silicon-bentonite, aluminum bronze-polyester, nickel graphite, or aluminum silicon-boron nitride. The binder material includes at least one of aluminum, nickel-aluminum, aluminum thiophosphate, or aluminum thiosulfate. The fluid catalyst includes a solvent having hydroxyl groups.

Filled abradable seal component and associated methods thereof

A circuit breaker having a monolithic structure and method of making is disclosed. The monolithic structure includes an arm portion having copper and a contact portion having a composite material. The composite material has a metallic matrix and a second phase disposed in the metallic matrix. The method of making the monolithic structure includes introducing a first powder into a first region of a mold, introducing a second powder into a second region of the mold, and consolidating the first powder and the second powder together. The first region of the mold corresponds to a contact portion, and the second region corresponds to an arm portion of the monolithic structure of the circuit breaker.

Monolithic contact system and method of forming

An article including a substrate and a plurality of coatings disposed on the substrate is presented. The plurality of coatings includes a thermal barrier coating disposed on the substrate; and a protective coating including a calcium-magnesium-aluminum-silicon-oxide (CMAS)-reactive material disposed on the thermal barrier coating. The CMAS-reactive material includes an NZP-type material. The CMAS-reactive material is present in the plurality of coatings in an effective amount to react with a CMAS composition at an operating temperature of the thermal barrier coating, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition. A method of making the article and a related turbine engine component are also presented.

Article and method of making thereof

Articles having coatings that are resistant to high temperature degradation are described, along with methods for making such articles. The article comprises a coating disposed on a substrate. The coating comprises a plurality of elongated surface-connected voids. The article further includes a protective agent disposed within at least some of the voids of the coating; the protective agent comprises a substance capable of chemically reacting with liquid nominal CMAS to form a solid crystalline product outside the crystallization field of said nominal CMAS. This solid crystalline product has a melting temperature greater than about 1200 degrees Celsius. The method generally includes disposing the protective agent noted above within the surface connected voids of the coating at an effective concentration to substantially prevent incursion of CMAS materials into the voids in which the protective agent is disposed.

Articles for high temperature service and method for making

Articles, such as components for high temperature turbomachinery components, include one or more coatings bearing certain perovskite compositions resistant to incursion by liquid calcium-magnesium-aluminum-silicon-oxide (CMAS) materials during service. The CMAS-reactive material includes a perovskite-structured oxide, which comprises a) a rare earth element, b) niobium, tantalum or a combination of tantalum and niobium, and c) oxygen. The CMAS-reactive material is present in an effective amount to react with a CMAS composition at an operating temperature, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition.

An article including a substrate and a plurality of coatings disposed on the substrate is presented. The plurality of coatings includes a thermal barrier coating disposed on the substrate; and a protective coating including a calcium-magnesium-aluminum-silicon-oxide (CMAS)-reactive material disposed on the thermal barrier coating. The CMAS-reactive material has an orthorhombic weberite crystal structure. The CMAS-reactive material is present in the plurality of coatings in an effective amount to react with a CMAS composition at an operating temperature of the thermal barrier coating, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition. A method of making the article and a related turbine engine component are also presented.

An electrolyte separator structure is provided. The electrolyte separator structure comprises a graded integral structure, wherein the structure comprises an ion-conducting first ceramic at a first end and an electrically insulating second ceramic at a second end, wherein the difference in the coefficient of thermal expansion of the ion-conducting first ceramic and the electrically insulating second ceramic is less than or equal to about 5 parts per million per degrees Centigrade, and wherein at least one of the first ceramic or the second ceramic comprises a strengthening agent. Method of making the ion-separator structure is provided. Electrochemical cells comprising the ion-separator structure and method of making the electrochemical cell using the ion-separator structure are also provided.

Electrolyte separator and method of making the electrolyte separator

A compressor blade for use in a compressor section of a gas turbine engine, comprising: a martensitic stainless steel compressor blade and an abrasive coating having an anodic component. The compressor blade has a blade portion, a dovetail portion and a platform portion intermediate the blade portion and the dovetail portion, the blade portion terminating in a tip opposite the dovetail portion. A cobalt-based coating overlies at least the blade portion of the compressor blade. The cobalt-based coating comprises a cobalt based material that includes precipitates of tungsten carbide that provide erosion resistance and particles of a sacrificial metal-based material distributed through the cobalt-based coating that provide galvanic corrosion resistance to the system.

Erosion and corrosion resistant coatings for exhaust gas recirculation based gas turbines

According to one embodiment, a monolithic cassette with graded electrical resistivity is presented. The monolithic cassette has a continuous grain structure between a first end and a second end; wherein electrical resistivity of the monolithic cassette is graded such that the resistance varies continuously from the first end to the second end. Methods and compositions for forming the monolithic cassette are also presented.

Ceramic, graded resistivity monolith using the ceramic, and method of making

The present application provides for ceramic collars and metal rings for active brazing in sodium-based thermal batteries. The ceramic collar may be an alpha-alumina collar configured for active brazing, and thereby sealing, to outer and inner Ni rings for use in NaMx cells. The portions of the alpha-alumina collar active brazed to the outer and inner Ni rings may be outwardly facing and include inwardly extending recesses. The portions of the outer and inner Ni rings active brazed to the outwardly facing portions of the collar may be inwardly facing. The alpha-alumina collar may include a greater coefficient of thermal expansion than each of the outer and inner Ni rings, and the alpha-alumina collar and outer and inner Ni rings may be configured such that a portion of the outer and inner Ni rings is deformed into the inwardly extending recesses of the alpha-alumina collar after active brazing thereof.

Ceramic collars for active brazing in sodium-based thermal batteries

A coating composition, a process of applying a coating having a coating composition, and a process of forming a coating composition are disclosed. The coating composition includes an alloy and an oxide component comprising nickel oxide. The process of applying the coating includes cold spraying the coating onto the article. The process of forming the coating composition includes blending and milling the alloy with the oxide component.

Coating composition, a process of applying a coating, and a process of forming a coating composition

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Bengaluru, India

Mohandas Nayak