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AssigneeGeneral Electric Company
InventorsDavid Forrest Dye, John Frederick Ackerman, Bhupendra Kumar Gupta, Jennifer Ann Pinson, Brian Thomas Pothier, Anthony Wayne Reynolds
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A coating system for reducing the tendency for hydrocarbon fluids, such as fuels and oils, to form carbonaceous deposits that adhere to fluid containment surfaces. The coating system combines an outermost layer of platinum with an inner ceramic barrier layer of silica and/or tantala. The platinum layer catalyzes the hydrocarbon fluid to form particles of carbonaceous gum substances, and the ceramic barrier layer seals the containment surface from the hydrocarbon fluid to eliminate attachments points for deposits and inhibit interdiffusion between the platinum layer and the containment surface. The invention also encompasses a coating apparatus and process for depositing the coating system.
A component through which a hydrocarbon fluid flows at a temperature of about 315 to about 425° C., the component comprising a wall and a coating system on a first surface of the wall, the coating system comprising an outermost layer consisting of platinum and a ceramic barrier layer between the outermost layer and the wall, the hydrocarbon fluid contacting and flowing across the outermost layer, the platinum of the outermost layer catalyzing the hydrocarbon fluid to form particles of carbonaceous gum substances suspended within the hydrocarbon fluid, the ceramic barrier layer having a thickness sufficient to inhibit interdiffusion between the outermost layer and the wall, wherein the outermost layer has a thickness of a monolayer up to about 40 nm or the coating system has a thickness of up to about 100 nm.
A gas turbine engine component installed on a gas turbine engine and through which a hydrocarbon fluid is flowing at a temperature of about 315 to about 425° C., the component comprising a wall and a coating system on a first surface of the wall, the coating system comprising an outermost layer consisting of platinum and a ceramic barrier layer between the outermost layer and the wall, the hydrocarbon fluid contacting and flowing across the outermost layer, the platinum of the outermost layer having a thickness of a monolayer up to about 40 nm and catalyzing the hydrocarbon fluid to form particles of carbonaceous gum substances suspended within the hydrocarbon fluid, the ceramic barrier layer having a thickness of about 300 to about 5000 nm and consisting essentially of silica and/or tantala to inhibit interdiffusion between the outermost layer and the wall.
Dependencies are inferred from the claim text.