United Technologies Corporation

William H Edwards, Iii

John A Harris, Iii

Edward S Smith

Steven M Kessell

Fuel contacting elements for gas turbines comprise high temperature alloys having a coke inhibiting layer of titanium carbide, titanium nitride, titanium boride, or mixtures thereof.

Gas turbine elements rearing coke inhibiting coatings of titanium

A method is taught for protecting fuel contacting surfaces of a gas turbine engine from carbon deposition by heating the element in a nitrogen containing atmosphere for sufficient time to cause penetration and absorption of nitrogen into the grain boundaries of the alloy surface, which acts as a barrier between the hydrocarbon fuel and the catalytic elements in the surfaces. The method includes heating at a temperature of 1800-1850 F. for about one hour, cooling to 1525-1575 F. and holding for about four hours, and cooling to a temperature of 1375-1425 F. and holding for about 16 hours.

Inhibiting coke formation by heat treating in nitrogen atmosphere

Fuel contacting elements for gas turbines comprise high temperature alloys having a coke inhibiting layer of alumina thereupon.

Gas turbine elements bearing coke inhibiting coatings of alumina

A method is taught for protecting hydrocarbon contacting surfaces of a gas turbine engine from carbon deposition by the application of a coating of silica.

Inhibiting coke formation by coating gas turbine elements with silica

A method is taught for protecting fuel contacting surfaces of a gas turbine engine from carbon deposition by the application of a coating of alumina thereto.

Inhibiting coke formation by coating gas turbine elements with alumina

Elements for use as protecting fuel contacting surfaces of a gas turbine engine are protected from carbon deposition by heating the element in a nitrogen containing atmosphere for sufficient time to cause penetration and absorption of nitrogen into the grain boundaries of the alloy surface, which acts as a barrier between the hydrocarbon fuel and the catalytic elements in the surfaces.

Gas turbine elements with coke resistant surfaces

A method is taught for protecting fuel contacting surfaces of a gas turbine engine from carbon deposition by the application of a coating of tungsten disulfide.

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Port St. Lucie, FL, United States of America

William H Edwards, Iii