Abstract: A composition includes molybdenum disulfide, epoxy binder, and 0.01 to 3 wt % lead. The composition is useful, for example, as dry film lubricant.

Abstract: A composition useful in methods and apparatuses for inhibiting the build-up of byproduct carbonaceous material includes a perovskite material or a precursor therefor; and a yttrium doped ceria or a precursor therefor.

Abstract: The present invention is directed to coating compositions for forming diffusion coatings on metal-based substrates. The coating compositions may include a metal powder, an inorganic salt, an activator, and a binder. The present invention is also directed to processes for forming diffusion coatings on metal-based substrates using the disclosed coating compositions.

Abstract: A method for cracking hydrocarbon includes: providing hydrocarbon; and feeding the hydrocarbon into an apparatus having an inner surface accessible to hydrocarbon, the inner surface comprising a perovskite material and a tuning material; wherein a yield of coke in the apparatus is lower than that in an apparatus without the perovskite material; and a yield of carbon monoxide in the apparatus is lower than that in an apparatus without the tuning material. An associated apparatus is also described.

Abstract: A method for cracking hydrocarbon, comprises: providing steam and hydrocarbon; and feeding steam and hydrocarbon into a reactor accessible to hydrocarbon and comprising a perovskite material of formula AaBbCcDdO3-?, wherein 0<a<1.2, 0?b?1.2, 0.9<a+b?1.2, 0<c<1.2, 0?d?1.2, 0.9<c+d?1.2, ?0.5<?<0.

Abstract: An apparatus has a surface exposable to a byproduct carbonaceous material formation environment and comprising a perovskite material having an ABO3 perovskite structure and being of formula AaBbO3-?, wherein 0.9<a?1.2; 0.9<b<1.2; -0.5<6<0.

Abstract: A surface treatment method includes: contacting a substrate with a treatment material, the substrate comprising a metallic element, the treatment material comprising an alkaline earth metal element, an alkali metal element, or any combination thereof; and forming on the substrate a surface layer comprising a first oxide of the alkaline earth metal element, the alkali metal element, or any combination thereof and a second oxide of the metallic element. A device has: a substrate layer comprising a metallic element; and a surface layer comprising a first oxide of an alkaline earth metal element, an alkali metal element, or any combination thereof, and a second oxide of the metallic element.

Abstract: Slurry coating composition for selectively enriching surface regions of a metal-based substrate, for example, the under-platform regions of a turbine blade, with chromium. The slurry coating composition contains metallic chromium, optionally metallic aluminum in a lesser amount by weight than chromium, and optionally other constituents. The composition further includes colloidal silica, and may also include one or more additional constituents, though in any event the composition is substantially free of hexavalent chromium and sources thereof. The coating composition can be used in a process that entails applying the coating composition to a surface region to form a slurry coating, and then heating the coating to remove any volatile components of the coating composition and thereafter cause diffusion of chromium from the coating into the surface region to form a chromium-rich diffusion coating.

Abstract: A system and method for measuring cooling effectiveness of a component is disclosed. The method includes providing a component having a surface provided with a coating including a volatilization-susceptible constituent and a volatilization-resistant constituent. Further, the method includes supplying a first gaseous medium over the surface of the component through a plurality of holes in the component and feeding a second gaseous medium along the surface of the component. The method includes exposing the surface of the component to the first and second gaseous mediums for a predetermined period. The method further includes determining a thickness of the coating exposed to the flow of the first and second gaseous mediums. The method includes analyzing the thickness of the coating to determine whether the coating is removed from the surface of the component upon exposure to the first and second gaseous mediums.

Abstract: A slurry coating composition for enriching a surface region of a metal-based substrate with chromium includes a metallic powder including chromium powder in the Cr(0) oxidation state and aluminum powder; a binder including colloidal silica to bind the metallic powder; and a stabilizer, wherein the chromium powder comprises at least about 80% by weight of the metallic powder and the aluminum powder comprises up to about 10% by weight of the metallic powder. A process of forming a coating and enriching a surface region of a component formed of a nickel-based superalloy with chromium includes applying the slurry coating composition to the surface region of the component to form a slurry coating on the surface region; curing the slurry coating to form a green coating; and sintering the green coating to form a coating having chromium in the alpha phase at an operating temperature of the component between about 1200° C. to about 1800° C.

Abstract: A method for manufacturing a fuel contacting component that facilitates reducing coke formation on at least one surface of the fuel contacting component is disclosed herein. The method includes applying a slurry composition including a powder including aluminum to the component surface, wherein the fuel contacting component is formed by an additive manufacturing process. The slurry composition is heat treated to diffuse the aluminum into the component surface. The heat treatment comprises forming a diffusion aluminide coating on the component surface, wherein the diffusion coating comprises a diffusion sublayer formed on the component surface and an additive sublayer formed on the diffusion sublayer. The method further comprises removing the additive sublayer of the diffusion aluminide coating with at least one aqueous solution such that the diffusion sublayer and the component surface are substantially unaffected, wherein the diffusion layer facilitates preventing coke formation on component surface.

Abstract: A system and method for measuring cooling effectiveness of a component is disclosed. The method includes providing a component having a surface provided with a coating including a volatilization-susceptible constituent and a volatilization-resistant constituent. Further, the method includes supplying a first gaseous medium over the surface of the component through a plurality of holes in the component and feeding a second gaseous medium along the surface of the component. The method includes exposing the surface of the component to the first and second gaseous mediums for a predetermined period. The method further includes determining a thickness of the coating exposed to the flow of the first and second gaseous mediums. The method includes analyzing the thickness of the coating to determine whether the coating is removed from the surface of the component upon exposure to the first and second gaseous mediums.

Abstract: A system and method for measuring cooling effectiveness of a component is disclosed. The method includes providing a component with a coating applied on a surface of the component. Further, the method includes supplying a first gaseous medium over a surface of the component through a plurality of holes in the component and feeding a second gaseous medium along the surface of the component. Further, the method includes exposing the surface of the component to the first and second gaseous mediums for a predetermined period. The method further includes obtaining an image of the surface of the component exposed to the first and second gaseous mediums for the predetermined period. The method includes analyzing the obtained image to determine whether at least a portion of the coating is removed from the surface of the component upon exposure to the second gaseous medium.

Abstract: An article including a metal substrate, an anti-coking catalyst layer and an alumina barrier layer disposed between the metal substrate and the anti-coking catalyst layer is provided. A process for making the article is also provided.

Abstract: A cleaning solution for a turbine engine includes a reagent composition including water within a range between about 25 percent and about 70 percent by volume of the reagent composition, an acidic component within a range between about 0.1 percent and about 50 percent by volume of the reagent composition, and an amine component within a range between about 1 percent and 40 percent by volume of the reagent composition. The reagent composition is diluted with water by a factor of up to about 40 to form the cleaning solution. The cleaning solution has a pH value in the range between 2.5 and 7.0. The cleaning solution is directed towards a component of the turbine engine having a layer of foreign material thereon, to at least partially remove the foreign material from the component. The layer of foreign material is formed at least partially from at least one of thermal reaction products of the foreign material and interstitial cement.

Abstract: A cleaning solution for a turbine engine is provided. The cleaning solution includes a reagent composition including water within a range between about 25 percent and about 70 percent by volume of the reagent composition, an acidic component within a range between about 0.1 percent and about 50 percent by volume of the reagent composition, and an amine component within a range between about 1 percent and 40 percent by volume of the reagent composition. The reagent composition is diluted with water by a factor of up to about 40 to form the cleaning solution. The cleaning solution has a pH value in the range between 2.5 and 7.0. The cleaning solution is used to clean a component of the turbine engine.

Abstract: A gas turbine engine component includes a substrate formed of a high temperature resistant material and a corrosion resistant layer. The corrosion resistant layer is inert to the molten salt impurities and includes a refractory metal vanadate of formula MxVyOz, wherein M is selected from the group consisting of alkaline earth metals, group IV and V transition metals, rare-earth metals and their combinations, and wherein z=x+2.5y, or z=1.5x+2.5y, or z=2x+2.5y.

Abstract: A system and method for measuring cooling effectiveness of a component is disclosed. The method includes providing a component with a coating applied on a surface of the component. Further, the method includes supplying a first gaseous medium over a surface of the component through a plurality of holes in the component and feeding a second gaseous medium along the surface of the component. Further, the method includes exposing the surface of the component to the first and second gaseous mediums for a predetermined period. The method further includes obtaining an image of the surface of the component exposed to the first and second gaseous mediums for the predetermined period. The method includes analyzing the obtained image to determine whether at least a portion of the coating is removed from the surface of the component upon exposure to the second gaseous medium.

Abstract: A method for manufacturing a fuel contacting component that facilitates reducing coke formation on at least one surface of the fuel contacting component is disclosed herein. The method includes applying a slurry composition including a powder including aluminum to the component surface, wherein the fuel contacting component is formed by an additive manufacturing process. The slurry composition is heat treated to diffuse the aluminum into the component surface. The heat treatment comprises forming a diffusion aluminide coating on the component surface, wherein the diffusion coating comprises a diffusion sublayer formed on the component surface and an additive sublayer formed on the diffusion sublayer. The method further comprises removing the additive sublayer of the diffusion aluminide coating with at least one aqueous solution such that the diffusion sublayer and the component surface are substantially unaffected, wherein the diffusion layer facilitates preventing coke formation on component surface.

Abstract: Methods of fabricating coated components using multiple types of fillers are provided. One method comprises forming one or more grooves in an outer surface of a substrate. Each groove has a base and extends at least partially along the outer surface of the substrate. The method further includes disposing a sacrificial filler within the groove(s), disposing a permanent filler over the sacrificial filler, disposing a coating over at least a portion of the substrate and over the permanent filler, and removing the first sacrificial filler from the groove(s), to define one or more channels for cooling the component. A component with a permanent filler is also provided.