United Technologies Corporation

Raytheon Technologies Corporation

Paul Henry Zajchowski

Donn Blankenship

Gary Charles Shubert

Melvin Freling

Susan Manning Meier

Alfonso Diaz

Brian T Hazel

Kevin W Schlichting

Mario P Bochiechio

Jessica L Serra

Christopher W Strock

Robert L Memmen

Henry H Thayer

Joseph A DePalma

Roy R Donovan

Matthew E Bintz

David A Rutz

Norman Pietruska

Eli N Ross

Ken Robert Lagueux

John F Lally

Craig L Ostrout

Donn R Blankenship

Norman A Pietruska

Gary Shubert

Norman A Pietrusca

Gary C Shubert

A plasma spray system including a turntable subsystem operable to position a multiple of work pieces on a respective multiple of workpiece mounts; a plasma spray subsystem operable to plasma spray the multiple of work pieces on said turntable subsystem; and an overspray wash subsystem operable to wash the multiple of work pieces on said turntable subsystem subsequent to plasma spray of the multiple of work pieces.

Equipment for plasma spray with liquid injection

An article such as a heat shield panel includes a substrate and a multi-layered coating supported on the substrate. The multi-layered coating can include alternating layers of different ceramic material compositions having individual thicknesses of less than 25 micrometers.

Article having multi-layered coating

An abrasive coating on a rotor shaft interacts with cantilevered vanes to form an abradable air seal in a turbine engine. The abrasive coating includes a metal bond coat, and an abrasive layer containing a plurality of abrasive CBN grit particles in a ceramic matrix.

Friable ceramic rotor shaft abrasive coating

A method and apparatus for microplasma spray coating a portion of a substrate, such as a gas turbine compressor blade, without masking any portions thereof. The apparatus includes a microplasma gun with an anode, cathode, and an arc generator for generating an electric arc between the anode and cathode. An arc gas emitter injects inert gas through the electric arc. The electric arc is operable for ionizing the gas to create a plasma gas stream. A powder injector injects powdered material into a plasma stream. A localized area of the compressor blade is coated with the powdered material without having to mask the compressor blade.

Method and apparatus for microplasma spray coating a portion of a compressor blade in a gas turbine engine

An abrasive coating on a rotor shaft interacts with cantilevered vanes to form an abradable air seal in a turbine engine. The abrasive coating includes a metal bond coat, and an abrasive layer containing a plurality of abrasive grit particles in a ceramic matrix. The grit particles may be selected from cubic boron nitride (CBN), zirconia, alumina, silicon carbide, diamond and mixtures thereof.

Abrasive rotor shaft ceramic coating

A ceramic thermal barrier coating having improved erosion resistance includes a metallic layer and a ceramic layer positioned on the metallic layer. The ceramic layer includes a first powder, a second powder, and a third powder. The first powder and the second powder are alloyed together prior to being mixed with the third powder.

Plasma-spray powder manufacture technique

A method and apparatus for microplasma spray coating a portion of a turbine vane without masking any portions thereof. The apparatus includes a microplasma gun with an anode, cathode, and an arc generator for generating an electric arc between the anode and cathode. An arc gas emitter injects gas through the electric arc. The electric arc is operable for ionizing the gas to create a plasma gas stream. A powder injector injects powdered material into a plasma stream. A localized area of the turbine vane is coated with the powdered material without having to mask the turbine vane.

Method and apparatus for microplasma spray coating a portion of a turbine vane in a gas turbine engine

A wear-resistant component of a carbon seal includes a surface and a coating applied onto the surface. The coating is a chromium carbide-nickel chromium composition constituting between about 75% and about 85% by weight chromium carbide and between about 15% and about 25% by weight nickel chromium. The chromium carbide-nickel chromium composition is applied onto the surface by high velocity oxy-fuel spraying (HVOF).

Wear resistant coating

A microplasma spray coating apparatus includes a microplasma apparatus with an anode, cathode, and an arc generator for generating an electric arc between the anode and cathode. An arc gas emitter injects inert gas through the electric arc. The electric arc is operable for ionizing the gas to create a plasma gas stream. A powder injector nozzle extends through the anode and injects powdered material into the plasma stream for transfer to the workpiece.

Microplasma spray apparatus and method for coating articles using same

A method and apparatus for repairing a thermal barrier coating on components in gas turbine engines and the like. The apparatus includes a microplasma spray gun having an anode, cathode, and an arc generator for generating an electric arc between the anode and cathode. The apparatus includes a nozzle for emitting arc gas into the electric arc. The electric arc is operable for ionizing the gas to create a plasma gas stream. A powder injector injects powdered thermal barrier coating material into the plasma gas stream. Defective areas of the thermal barrier coating can be patched on the component without masking the component.

Method and apparatus for repairing thermal barrier coatings

A method for coating a part includes applying a ceramic mask to a first surface portion of the part. A coating is applied to a second surface portion of the part and at least partially contacting the mask. The mask is destructively removed.

Coating methods and apparatus using pre-formed ceramic mask

Microspray apparatus and methods involve injecting powdered material into a plasma gas stream. The material comprises first and second component powders. The second powder is a majority by the weight of the powdered material. The first powder acts as a melting point depressant. The first and second powders may have similar compositions but with the first powder including a greater quantity of a melting point depressant element.

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Enfield, CT, United States of America

Paul Henry Zajchowski