Patents by Inventor Reza Sarrafi-Nour
Reza Sarrafi-Nour has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20250067186Abstract: A composite component for a gas turbine engine is provided, along with its methods of formation. The composite component includes: an additively printed inner portion defining at least one flowpath feature, and a ceramic matrix composite (CMC) outer portion formed on the additively printed inner portion such that the CMC outer portion substantially surrounds the additively printed inner portion. The additively printed inner portion includes SiC; and the CMC outer portion includes a fiber reinforced ceramic matrix (e.g., including SiC) and defines at least one cooling cavity fluidly coupled to the at least one flowpath feature of the additively printed inner portion.Type: ApplicationFiled: August 22, 2023Publication date: February 27, 2025Inventors: Brian Gregg Feie, Michael Ray Tuertscher, Daniel Gene Dunn, Reza Sarrafi-Nour, Douglas Glenn Decesare, Henry Charles McGuigan, Matthew Hockemeyer, Steven James Murphy
-
Publication number: 20250058493Abstract: Methods for manufacturing a ceramic matrix composite (CMC) component are provided. The method may include building a plurality of successive layers of the ceramic component through a selective solidification of a composite feedstock comprising a plurality of composite granules and densifying the ceramic component through infiltration with silicon. Each of the plurality of composite granules comprises one or more silicon carbide particles and one or more carbon particles. Composite feedstocks are also provided, which may include a plurality of composite granules with each of the plurality of composite granules comprises one or more silicon carbide particles and one or more carbon particles.Type: ApplicationFiled: August 17, 2023Publication date: February 20, 2025Inventors: Henry Charles McGuigan, William Francis Navojosky, Reza Sarrafi-Nour
-
Patent number: 12196108Abstract: An article for high temperature service is presented herein. One embodiment is an article including a substrate having a silicon-bearing ceramic matrix composite; and a layer disposed over the substrate, wherein the layer includes silicon and a dopant, the dopant including aluminum. In another embodiment, the article includes a ceramic matrix composite substrate, wherein the composite includes a silicon-bearing ceramic and a dopant, the dopant including aluminum; a bond coat disposed over the substrate, where the bond coat includes elemental silicon, a silicon alloy, a silicide, or combinations including any of the aforementioned; and a coating disposed over the bond coat, the coating including a silicate (such as an aluminosilicate or rare earth silicate), yttria-stabilized zirconia, or a combination including any of the aforementioned.Type: GrantFiled: November 28, 2022Date of Patent: January 14, 2025Assignee: General Electric CompanyInventors: Krishan Lal Luthra, Julin Wan, Reza Sarrafi-Nour
-
Publication number: 20240253333Abstract: A method of assembling a composite panel includes disposing a pliable matrix material between a first side of a ceramic core structure and a ceramic matrix composite face sheet, wherein the ceramic core structure comprises a plurality of hollow cells defined by a plurality of walls extending from the first side of the ceramic core structure to a second side of the ceramic core structure opposite the first side; and densifying the pliable matrix material to bond the pliable matrix material with the ceramic core structure and the ceramic matrix composite face sheet.Type: ApplicationFiled: February 1, 2023Publication date: August 1, 2024Inventors: Daniel Gene Dunn, Henry Charles McGuigan, Reza Sarrafi-Nour
-
Publication number: 20240253324Abstract: A composite panel includes a core structure comprising a plurality of hollow cells, the plurality of hollow cells defined by a plurality of walls extending from a first face to a second face, wherein a cross-sectional geometry from the first face to the second face is nonuniform for at least one of the plurality of hollow cells; and a composite face sheet bonded to the core structure at the first face.Type: ApplicationFiled: February 1, 2023Publication date: August 1, 2024Inventors: Daniel Gene Dunn, Henry Charles McGuigan, William Francis Navojosky, Reza Sarrafi-Nour, Douglas Glenn Decesare
-
Publication number: 20230234895Abstract: Environmental barrier coatings including a bondcoat layer including silicon and a rare earth silicate-based hermetic layer and rare earth silicate-based non-hermetic layer are provided. The rare earth silicate-based hermetic layer is deposited on the bondcoat via a thermal spray process and has an elastic modulus ranging from 100 GPa to 180 GPa. The at least one rare earth silicate-based non-hermetic layer is deposited on the rare earth silicate-based hermetic layer and has an elastic modulus ranging from 50 GPa to 100 GPa. Coated gas turbine engine components and methods for coating gas turbine engine components are also provided.Type: ApplicationFiled: January 26, 2022Publication date: July 27, 2023Inventors: Glen Harold Kirby, Nathaniel Patrick Brown, Guruvenket Srinivasan, Reza Sarrafi-Nour, Nicholas Edward Antolino, Julin Wan, Anant Achyut Setlur, Taryn Elizabeth Hewitt
-
Publication number: 20230174788Abstract: An coated component is provided. The coated component includes a component substrate and bond coat layer comprising silicon deposited on the component substrate. A composite layer is deposited on the bond coat layer. The composite layer includes a rare earth disilicate and a second phase material. The composite layer has a thickness (T) from about 0.05 mm to about 2.25 mm, and a coefficient of thermal expansion that is different by a value of about 0 to about 2.25 from a coefficient of thermal expansion of the component substrate upon which the bond coat layer is deposited. Coated gas turbine engine components are also provided.Type: ApplicationFiled: January 28, 2022Publication date: June 8, 2023Inventors: Reza Sarrafi-Nour, Vidya Ramaswamy, Adarsh Shukla, Mohandas Nayak, Geoffrey Mark Eadon
-
Publication number: 20230090598Abstract: An article for high temperature service is presented herein. One embodiment is an article including a substrate having a silicon-bearing ceramic matrix composite; and a layer disposed over the substrate, wherein the layer includes silicon and a dopant, the dopant including aluminum. In another embodiment, the article includes a ceramic matrix composite substrate, wherein the composite includes a silicon-bearing ceramic and a dopant, the dopant including aluminum; a bond coat disposed over the substrate, where the bond coat includes elemental silicon, a silicon alloy, a silicide, or combinations including any of the aforementioned; and a coating disposed over the bond coat, the coating including a silicate (such as an aluminosilicate or rare earth silicate), yttria-stabilized zirconia, or a combination including any of the aforementioned.Type: ApplicationFiled: November 28, 2022Publication date: March 23, 2023Inventors: Krishan Lal Luthra, Julin Wan, Reza Sarrafi-Nour
-
Patent number: 11542824Abstract: An article for high temperature service is presented herein. One embodiment is an article including a substrate having a silicon-bearing ceramic matrix composite; and a layer disposed over the substrate, wherein the layer includes silicon and a dopant, the dopant including aluminum. In another embodiment, the article includes a ceramic matrix composite substrate, wherein the composite includes a silicon-bearing ceramic and a dopant, the dopant including aluminum; a bond coat disposed over the substrate, where the bond coat includes elemental silicon, a silicon alloy, a silicide, or combinations including any of the aforementioned; and a coating disposed over the bond coat, the coating including a silicate (such as an aluminosilicate or rare earth silicate), yttria-stabilized zirconia, or a combination including any of the aforementioned.Type: GrantFiled: August 18, 2015Date of Patent: January 3, 2023Assignee: General Electric CompanyInventors: Krishnan Lal Luthra, Julin Wan, Reza Sarrafi-Nour
-
Publication number: 20220034202Abstract: System and method of non-line-of-sight coating of a sand screen for use in wellbores during the production of hydrocarbon fluids from subterranean formations. The coatings can have uniformly coated internal and external surfaces.Type: ApplicationFiled: October 18, 2021Publication date: February 3, 2022Inventors: Jeremy Alexander Davis, Antonio Lazo, Reza Sarrafi-Nour, David Reuel Underdown
-
Patent number: 11174711Abstract: A method of non-line-of-sight coating of a sand screen for use in wellbores during the production of hydrocarbon fluids from subterranean formations. The coating can have uniformly coated internal and external surfaces.Type: GrantFiled: February 15, 2018Date of Patent: November 16, 2021Assignee: CHEVRON U.S.A. INC.Inventors: Jeremy Alexander Davis, Antonio Lazo, Reza Sarrafi-Nour, David Reuel Underdown
-
Patent number: 10093810Abstract: An article includes a substrate and a coating provided on a surface of the substrate. The coating includes at least one metal silicide layer consisting essentially of MoSi2 or WSi2 or (Mo, W)Si2 or a platinum group metal silicide and at least one layer consisting essentially of Si3N4.Type: GrantFiled: March 15, 2013Date of Patent: October 9, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Julin Wan, Milivoj Konstantin Brun, Peter Joel Meschter, Reza Sarrafi-Nour, Don Mark Lipkin
-
Publication number: 20180238150Abstract: Embodiments of the disclosure are a method of non-line-of-sight coating of a sand screen for use in wellbores during the production of hydrocarbon fluids from subterranean formations. Also disclosed is a system comprising a sand screen with one or more components that have uniformly coated internal and external surfaces.Type: ApplicationFiled: February 15, 2018Publication date: August 23, 2018Inventors: Jeremy Alexander Davis, Antonio Lazo, Reza Sarrafi-Nour, David Reuel Underdown
-
Patent number: 9938839Abstract: Articles suitable for use as high-temperature machine components include a substrate and an environmental barrier coating disposed over the substrate, where the environmental barrier coating includes at least one hermetic self-sealing layer formed from a mixture including an alkaline earth metal aluminosilicate and a rare-earth silicate, and where the at least one hermetic self-sealing layer exhibits substantially no net remnant or residual expansion when subjected to high temperature heat treatment. The environmental barrier coating can further include a bondcoat disposed between the substrate and the hermetic self-sealing layer, a topcoat disposed over the hermetic self-sealing layer, and/or an intermediate layer disposed between the hermetic self-sealing layer and the bondcoat. The intermediate layer can include a barrier material that is substantially inert with respect to silica.Type: GrantFiled: March 14, 2014Date of Patent: April 10, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Larry Steven Rosenzweig, Reza Sarrafi-Nour
-
Publication number: 20170218779Abstract: An article for high temperature service is presented herein. One embodiment is an article including a substrate having a silicon-bearing ceramic matrix composite; and a layer disposed over the substrate, wherein the layer includes silicon and a dopant, the dopant including aluminum. In another embodiment, the article includes a ceramic matrix composite substrate, wherein the composite includes a silicon-bearing ceramic and a dopant, the dopant including aluminum; a bond coat disposed over the substrate, where the bond coat includes elemental silicon, a silicon alloy, a silicide, or combinations including any of the aforementioned; and a coating disposed over the bond coat, the coating including a silicate (such as an aluminosilicate or rare earth silicate), yttria-stabilized zirconia, or a combination including any of the aforementioned.Type: ApplicationFiled: August 18, 2015Publication date: August 3, 2017Inventors: Krishnan Lal LUTHRA, Julin WAN, Reza SARRAFI-NOUR
-
Publication number: 20160265367Abstract: Article includes a substrate, a bond coat disposed on the substrate, an environmental barrier coating disposed on the bond coat, and a patterned abradable coating disposed on the second top coat. The environmental barrier coating includes an intermediate layer disposed on the bond coat, a sealing layer disposed on the intermediate layer, a first top coat disposed on the sealing layer, and a second top coat disposed on the first top coat. The first top coat is different from the second top coat.Type: ApplicationFiled: December 22, 2014Publication date: September 15, 2016Applicant: GENERAL ELECTRIC COMPANYInventors: Larry Steven ROSENZWEIG, Curtis Alan JOHNSON, Peter Joel MESCHTER, Reza SARRAFI-NOUR
-
Patent number: 9365725Abstract: An article for use in aggressive environments is presented. In one embodiment, the article comprises a substrate and a self-sealing and substantially hermetic sealing layer comprising an alkaline-earth aluminosilicate disposed over the bondcoat. The substrate may be any high-temperature material, including, for instance, silicon-bearing ceramics and ceramic matrix composites. A method for making such articles is also presented. The method comprises providing a substrate; disposing a self-sealing alkaline-earth aluminosilicate layer over the substrate; and heating the sealing layer to a sealing temperature at which at least a portion of the sealing layer will flow.Type: GrantFiled: November 16, 2007Date of Patent: June 14, 2016Assignee: General Electric CompanyInventors: Reza Sarrafi-Nour, Peter Joel Meschter, Curtis Alan Johnson, Krishan Lal Luthra, Larry Steven Rosenzweig
-
Publication number: 20160003063Abstract: Articles suitable for use as high-temperature machine components include a substrate and an environmental barrier coating disposed over the substrate, where the environmental barrier coating includes at least one hermetic self-sealing layer formed from a mixture including an alkaline earth metal aluminosilicate and a rare-earth silicate, and where the at least one hermetic self-sealing layer exhibits substantially no net remnant or residual expansion when subjected to high temperature heat treatment. The environmental barrier coating can further include a bondcoat disposed between the substrate and the hermetic self-sealing layer, a topcoat disposed over the hermetic self-sealing layer, and/or an intermediate layer disposed between the hermetic self-sealing layer and the bondcoat. The intermediate layer can include a barrier material that is substantially inert with respect to silica.Type: ApplicationFiled: March 14, 2014Publication date: January 7, 2016Applicant: GENERAL ELECTRIC COMPANYInventors: Larry Steven ROSENZWEIG, Reza SARRAFI-NOUR
-
Publication number: 20150221904Abstract: Systems and methods for providing the assembly electrochemical cells in neutral materials are described. Components can be eliminated from traditional electrochemical cell designs in this fashion. Embodiments of assemblies include a module block formed of a neutral material including a plurality of cell cavities, the cell cavities having at least an open top end. Each of the plurality of cell cavities is configured as a cell case for an electrochemical cell. The cavities can be provided a feed-through assembly, or have an electrochemical cell assembled therein.Type: ApplicationFiled: February 4, 2014Publication date: August 6, 2015Applicant: GENERAL ELECTRIC COMPANYInventors: KRISTOPHER JOHN FRUTSCHY, REZA SARRAFI-NOUR, SANDOR ISTVAN HOLLO, THOMAS ANGELIU, DONALD WAYNE WHISENHUNT, JR., DANIEL QI TAN, SATISH GUNTURI, ROGER NEIL BULL, JOHN RAYMOND KRAHN, DAVID CHARLES BOGDAN, JR.
-
Patent number: 9083024Abstract: A battery stack includes a plurality of curved base layers, at least one curved bipolar layer, at least one anode layer disposed between a first curved base layer of the plurality of curved base layers and the at least one curved bipolar layer, at least one cathode layer disposed between the at least one bipolar layer, a second base layer and a plurality of seals. The first base layer and the at least one bipolar layer are provided with one or more seals that seal the first base layer to the at least one bipolar layer without contacting the anode and/or the cathode layer.Type: GrantFiled: October 27, 2011Date of Patent: July 14, 2015Assignee: General Electric CompanyInventors: Shu Ching Quek, Chandra Sekher Yerramalli, Curtis Alan Johnson, Reza Sarrafi-Nour