United Technologies Corporation

William J Dalzell, Jr

Robert J Wright

Jarrett L Spence

Raymond M O'Donoghue

George Himich, Jr

Frederick Clell Walden

George Lee Crawford

Merle E Funkhouser

An air seal for use in a gas turbine engine includes reduced susceptibility to deflagration during operating conditions in which an excessive amount of seal material is liberated from the seal and ingested into the engine. The seal includes a seal substrate, and a thermally sprayed metallic bond layer applied to the seal substrate. The bond layer includes nickel and aluminum. The seal also includes a thermally sprayed abradable seal layer applied to the bond layer. The abradable material is composed of aluminum powder and silicon powder forming a metal matrix, and co-deposited methyl methacrylate particles embedded as filler in the metal matrix. The filler is less likely to deflagrate compared to conventionally used materials such as polyester.

Abradable seal having improved properties and method of producing seal

A thermal spray method and apparatus for applying a coating on to a substrate is provided comprising the steps of: (1) providing powder particles to be deposited on to the substrate; (2) providing a plasma spray apparatus for depositing the powder particles; (3) providing structure for preheating the powder particles prior to the particles entering the plume; (4) preheating the powder particles prior to entraining the particles within the plasma; and (5) depositing the molten powder particles on to the substrate.

Thermal spray coating method and apparatus

A thermal spray apparatus for depositing a coating on to a substrate is provided which includes a plasma generator for selectively changing gas from a gaseous state to a plasma, and apparatus for filtering plasma. Powder particles entrained in the plasma change from a solid state to a molten state. The apparatus for filtering the plasma permits only a high intensity region of the plasma to pass through to the substrate.

Thermal spray coating apparatus

Ceramic fibers may be produced by the electrophoretic deposition of metal oxide upon a conductive fiber core, which core may be subsequently removed.

Ceramic fibers produced by electrophoretic deposition of particles

An oxide dispersion strengthened metal coating is applied to a substrate by positioning a laser spray apparatus over the substrate such that a laser in the spray apparatus forms a hot zone at a distance above the substrate sufficient to prevent the substrate from melting. An oxide dispersion strengthened metal powder coating material is injected into the hot zone to heat the coating material such that it will be in a plastic state when it impinges against the substrate. The coating material is then caused to impinge against the substrate to form a uniform coating on the substrate. The microstructure of the coating on the substrate is substantially identical to the coating material's microstructure before it is injected into the hot zone.

Method for the application of coatings of oxide dispersion strengthened

A method is taught for the preparation of ceramic fibers by electrophoretic deposition of metal oxide upon a conductive fiber core, which core may be subsequently removed.

Electrophoresis process for preparation of ceramic fibers

Ceramic coated fibers may be produced by the electrophoretic deposition of metal oxide coatings on a conductive fiber core.

Ceramic coated fibers

A method is taught for the electrophoretic deposition of metal oxide coatings upon a conductive fiber core.

High rate electrophoresis process for ceramic coated fibers

A method is taught for the preparation of metal oxide sols particularly suited for the electrophoretic deposition of metal oxide coatings upon a fiber core.

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Jupiter, FL, United States of America

William J Dalzell, Jr