General Electric Company

Global Nuclear Fuel - Americas, LLC

Yuk-Chiu Lau

Dennis Michael Gray

Marcus P Borom

Curtis Alan Johnson

Surinder Singh Pabla

Hongyu Wang

Warren Arthur Nelson

Melvin Robert Jackson

Canan Uslu Hardwicke

Farshad Ghasripoor

David Vincent Bucci

Richard John Grylls

David Joseph Mitchell

Joseph Garfield Albanese

Donald Joseph Baldwin

Arnold Thomas Henry

Joseph David Rigney

Kripa K Varanasi

Pazhayannur Ramanathan Subramanian

Ann Melinda Ritter

Krishnamurthy Anand

Mohandas Nayak

Tao Deng

Joshua Lee Margolies

Theodore Robert Grossman

Paul Mathew

Margaret Louise Blohm

Eklavya Calla

Nitin Bhate

David W White

Kevin L Ledford

Paul Everett Cantonwine

Yang-Pi Lin

Guruprasad Sundararajan

David Andrew Helmick

Christopher Joseph Lochner

Timothy W Clark

Nicholas R Gullette

Ming Feng Hsu

Bangalore Aswatha Nagaraj

Irene T Spitsberg

Wayne Charles Hasz

John McConnell Delvaux

Michael James Weimer

Ji-Cheng Zhao

Ronald Ralph Cairo

Dong-Sil Park

Lawrence E Szala

Reed Roeder Corderman

Henry Peter Offer

Bastiaan Arie Korevaar

Young Jin Kim

D Sangeeta

Liang Jiang

Raymond Alan White

Herbert Chidsey Roberts, Iii

John W Devitt

Dalong Zhong

Badri Narayan Ramamurthi

Harish Radhakrishna Acharya

Gregory Allen O'Neil

Robert Anthony Fusaro, Jr

Anteneh Kebbede

Raymond Edward Chupp

Matthew David Saylor

William Patrick Rusch

David Alan Nye

Todd Charles Curtis

Chek Beng Ng

Gregory John Parker

Alfred Stanley Nelson, Iii

Viswanathan Venkatachalapathy

Arunkumar Shamrao Watwe

William Emerson Martinez Zegarra

John Mcconnell Delvaux

Nuclear reactor components are treated with thermal methods to increase wear resistance. Example treatments include thermal treatments using particulate or powderized materials to form a coating. Methods can use cold spray, with low heat and high velocities to blast particles on the surface. The particles impact and mechanically deform, forming an interlocking coating with the surface and each other without melting or chemically reacting. Materials in the particles and resultant coatings include metallic alloys, ceramics, and/or metal oxides. Nuclear reactor components useable with methods of increased wear resistance include nuclear fuel rods and assemblies containing the same. Coatings may be formed on any desired surface, including fuel rod positions where spacer contact and fretting is most likely.

Fuel rods with wear-inhibiting coatings

A solid oxide fuel cell is disclosed. The fuel cell includes a porous anode, formed of finely-dispersed nickel/stabilized-zirconia powder particles. The particles have an average diameter of less than about 300 nanometers. They are also characterized by a tri-phase length of greater than about 50 &#x3bc;m/&#x3bc;m. A solid oxide fuel cell stack is also described, along with a method of forming an anode for a solid oxide fuel cell. The method includes the step of using a spray-agglomerated, nickel oxide/stabilized-zirconia powder to form the anode.

Solid oxide fuel cell structures, and related compositions and processes

Nuclear reactor components are treated with thermal methods to increase wear resistance. Example treatments include thermal treatments using particulate or powderized materials to form a coating. Methods can use cold spray, with low heat and high velocities to blast particles on the surface. The particles impact and mechanically deform, forming an interlocking coating with the surface and each other without melting or chemically reacting. Materials in the particles and resultant coatings include metallic alloys, ceramics, and/or metal oxides. Nuclear reactor components usable with methods of increased wear resistance include nuclear fuel rods and assemblies containing the same. Coatings may be formed on any desired surface, including fuel rod positions where spacer contact and fretting is most likely.

Fuel rods with wear-inhibiting coatings and methods of making the same

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

An article, such as a bucket, a blade, a nozzle, a vane, a strut, a fuel nozzle, a combustion casing, and a transition piece, the article having a damping coating comprising approximately 8 wt % to approximately 15 wt % YOand approximately 19 wt % to approximately 28 wt % TaOwith the balanced weight of ZrOis presented.

Articles having damping coatings thereon

Provided is bond coating powder and method of making. The method includes providing a powder including a plurality of parent particles. The method includes providing a plurality of dispersoids. The method includes mechanically alloying the powder and the plurality of dispersoids at ambient temperature. The mechanical alloying operable to provide a selective occupation of the plurality of dispersoids in a grain boundary area of the plurality of parent particles providing the bond coating powder. The plurality of dispersoids occupy about 18 percent to about 30 percent of the grain boundary area of the bond coating powder.

Bond coating powder comprising MCrAlY (M=Ni,Fe,Co), method of making, and a method of applying as bond coating

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

Different plasma spray guns have differing current and voltage requirements for their operation. The spray guns generally fall into low voltage high current and high voltage low current types. The power requirements of the guns vary greatly in terms of overall power ranging from few tens of kilowatts to few hundreds of kilowatts. The guns also have wide ranging requirements for voltage and current. A power delivery unit is described in which the unit is capable of delivering the wide range of power as well as the wide ranges of voltage and current. A plasma spray system with such power delivery unit can universally operate both the low voltage high current and high voltage low voltage spray gun types. Such system can reduce capital and operation costs since shops need not maintain separate and incompatible plasma spray systems.

Power delivery unit, plasma spray system, and method of using plasma spray system

A gas distribution ring assembly for a plasma spray system includes a gas distribution ring including a plurality of openings allowing a gas to pass to an inner diameter thereof. The assembly also includes a separate positioning ring axially aligned with the gas distribution ring between the gas distribution ring and an electrically charged outlet of the plasma spray system.

Gas distribution ring assembly for plasma spray system

A coating system and process for protecting component surfaces exposed to sulfur-containing environments at elevated temperatures. The coating system includes a sulfidation-resistant overlay coating that is predominantly niobium or molybdenum.

Process for sulfidation-resistant coating system

An adjustable plasma spray gun apparatus is disclosed. In one embodiment, an adjustable plasma spray gun apparatus includes: a plasma spray gun body having a fore portion and an aft portion; and a first coupler configured to removably attach to the plasma spray gun body at the aft portion, the coupler including: a first portion having a first axial opening configured to removably attach to the plasma spray gun body at the aft portion; and a second portion having a second axial opening configured to removably attach to one of an electrode body or a second coupler.

Adjustable plasma spray gun

A process for erosion testing of a specimen article includes securing a test specimen in a test rig; measuring physical characteristics of the test specimen article; using a thermal spray coating apparatus, flowing incident particles at the test specimen; and re-measuring the physical characteristics of the test specimen.

Method for testing high temperature mechanical durability of articles

Sulfidation-resistant coating system

A spray coating process and apparatus suitable for depositing coatings on surfaces of components, and particularly surfaces that are difficult to access with conventional cold spraying equipment. The process and apparatus employ a spray gun having a tubular body with a longitudinal axis and an exit at one end thereof. The body has a first portion defining a converging passage, a second portion defining a diverging passage that defines the exit of the body, and a throat portion therebetween that defines a throat between and connecting the converging and diverging passages. The gun is further equipped with at least one gas inlet for introducing a gas upstream of the converging passage, and at least one feedstock inlet for introducing a feedstock at or immediately upstream of the throat.

Apparatus and process for depositing coatings

The present invention provides methods for manufacturing an article having a wetting-resistant surface. The method includes providing a substrate. The method further includes disposing a coating mixture on a surface of the substrate, wherein the coating mixture comprises a braze material and a texture-providing material. The method further includes heating the braze material to bond the texture-providing material to the surface of the substrate to form the article having the wetting-resistant surface.

Methods of preparing wetting-resistant surfaces and articles incorporating the same

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Ballston Lake, NY, United States of America

Yuk-Chiu Lau