United Technologies Corporation

Rtx Corporation

Glenn A Cotnoir

Xuan Liu

Brian T Hazel

Danielle E Jencks

James Thompson Beals

Philip H McCluskey

Charles A Ellis

Stephen Chin

Russell F Croft

George E Foster

Daniel R Godin

Andy Turko

H David Harter

David A Litton

Michael J Maloney

Dilip M Shah

Daniel A Bales

Carl R Verner

James W Neal

Joseph Parkos, Jr

Russell Albert Beers

Harry E Eaton

Dinesh K Gupta

Keith A Santeler

Sudhangshu Bose

Blake J Luczak

Daniel F Paulonis

Stephen Douglas Murray

John J Marcin

Joshua E Persky

Harry Edwin Eaton, Jr

Jacob A Snyder

Mladen F Trubelja

John D Wiedemer

Joseph A DePalma

Thomas M Morin

Rafael A Perez Reisler

Venkat Seetharaman

Shaun M Enos

Teresa A Munger

Lucy Jean Raymond

Stephen D Murray

Joseph J Parkos Jr

Keith Santeler

A method for coating a component having: a metallic substrate; a ceramic coating having one or more ceramic coating layers atop the substrate; and a cooling passageway system comprising a plurality of feed passageways extending from one or more inlet ports and a plurality of outlet passageways. The outlet passageways have openings in the coating. The method involves: applying a slurry aluminide to the plurality of outlet passageways; coupling the one or more inlets to a suction source; applying an external gas flow to the component, the suction source drawing the external gas in through the outlet passageways and out through the one or more inlet ports, the external gas flow comprising at least 50% by volume combined one to all of Ar, He, and H; and while the suction source is drawing the external gas, heating the component to aluminize the cooling passageway system.

Internal aluminization of coated substrates

A method for coating a metallic substrate includes applying an MCrAlY coating. Machining removes the MCrAlY coating from one or more regions of the substrate. A simultaneous aluminizing and chromizing: aluminizes an interior surface region of the substrate lacking the MCrAlY and at least a portion of a region where the MCrAlY remains; and chromizes an exterior surface region of the substrate lacking the MCrAlY and at least a different portion of the region where the first MCrAlY remains.

Turbine airfoil coating

A gas turbine engine component includes a substrate having first surface and a second surface disposed opposite the first surface, a plurality of holes extending through the substrate from the first surface to the second surface, the holes defined by a plurality of respective walls each extending from the first surface to the second surface, a metallic bond coat disposed on the first surface, and an aluminide coating disposed on the first surface, the second surface, and the walls. The metallic bond coat is disposed between the first surface and the aluminide coating and the walls are free of the metallic bond coat.

Internal aluminide coating for vanes and blades and method of manufacture

A method for use in a physical vapor deposition coating process includes depositing a ceramic coating material from a plume onto at least one substrate to form a ceramic coating thereon, and during the deposition, rotating the at least one substrate at rotational speed selected with respect to deposition rate of the ceramic coating material onto the at least one substrate.

Physical vapor deposition using rotational speed selected with respect to deposition rate

Removing of a casting core from a metal casting leaves at least one opening in a surface of the metal. The opening is filled with a sacrificial material. The metal and sacrificial material are machined at the opening. After the machining, a remainder of the sacrificial material is removed.

Method of machining parts having holes

A refractory metal core for use in a casting system has a coating for providing oxidation resistance during shell fire and protection against reaction/dissolution during casting. In a first embodiment, the coating includes at least one oxide and a silicon containing material. In a second embodiment, the coating includes an oxide selected from the group of calcia, magnesia, alumina, zirconia, chromia, yttria, silica, hafnia, and mixtures thereof. In a third embodiment, the coating includes a nitride selected from the group of silicon nitride, sialon, titanium nitride, and mixtures thereof. Other coating embodiments are described in the disclosure.

Refractory metal core coatings

Coatings containing at least 85% by volume crystalline mullite with less than 15% by volume of amorphous material and mullite dissociation phases are plasma sprayed onto the surface of a silicon based ceramic substrate by closely controlling the plasma spray parameters including the mullite feed stock and its particle size, the nozzle outlet stand-off distance, movement of the substrate past the plasma flow, back side heating of the substrate and the powder feed rate through the plasma spray gun.

Plasma sprayed mullite coatings on silicon based ceramic materials

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Thompson, CT, United States of America

Glenn A Cotnoir