Patents by Inventor Andrew Joseph Lazur
Andrew Joseph Lazur 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).
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Publication number: 20240109816Abstract: A tooling assembly suitable for use in infiltrating a fibrous preform comprises a first perforated plate having an outer surface and an oppositely disposed inner surface defining a plate thickness therebetween, and a plurality of tapered holes extending through the thickness. Each hole of the plurality of tapered holes has a first diameter at the outer surface and a second diameter at the inner surface, and the first diameter is greater than the second diameter.Type: ApplicationFiled: September 30, 2022Publication date: April 4, 2024Inventors: Ying She, Afshin Bazshushtari, Sergio Calabrese, Douglas F. Long, Andrew Joseph Lazur
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Publication number: 20240051879Abstract: A coated fiber structure for use in a ceramic matrix composite comprises a fiber and a fiber coating arrangement applied to and at least partially circumscribing the fiber. The fiber coating arrangement comprises a first boron nitride layer comprising exfoliated hexagonal boron nitride, a silicon carbide layer extending at least partially coaxially with and in direct contact with the first boron nitride layer, and a second boron nitride layer radially opposite the silicon carbide layer, with respect to the first boron nitride layer.Type: ApplicationFiled: August 12, 2022Publication date: February 15, 2024Inventors: Mary Colby, Kenneth Petroski, Andrew Joseph Lazur
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Patent number: 11878945Abstract: In some examples, a method may include depositing, from a slurry comprising particles including silicon metal, a bond coat precursor layer including the particles comprising silicon metal directly on a ceramic matrix composite substrate. The method also may include locally heating the bond coat precursor layer to form a bond coat comprising silicon metal. Additionally, the method may include forming a protective coating on the bond coat. In some examples, an article may include a ceramic matrix composite substrate, a bond coat directly on the substrate, and a protective coating on the bond coat. The bond coat may include silicon metal and a metal comprising at least one of Zr, Y, Yb, Hf, Ti, Al, Cr, Mo, Nb, Ta, or a rare earth metal.Type: GrantFiled: February 3, 2021Date of Patent: January 23, 2024Assignees: Rolls-Royce Corporation, Rolls-Royce High Temperature Composites, Inc.Inventors: Sungbo Shim, Kang N. Lee, Stephen Isaiah Harris, Andrew Joseph Lazur
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Publication number: 20240018056Abstract: A ceramic matrix composite includes a fiber, a first interface coating layer disposed adjacent to an outer surface of the fiber, and a first protective layer disposed outward of the first interface coating layer and the fiber. The first protective layer comprises a high entropy ceramic. A method of protecting a fiber of a ceramic matrix composite includes depositing, by chemical vapor deposition or chemical vapor infiltration, a first interface coating layer on the fiber; and depositing, by chemical vapor deposition or chemical vapor infiltration, a first protective layer outward of the first interface coating layer. The first protective layer comprises a high entropy ceramic.Type: ApplicationFiled: July 15, 2022Publication date: January 18, 2024Inventors: Kenneth Petroski, Mary Colby, Andrew Joseph Lazur
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Publication number: 20230366318Abstract: A gas turbine engine includes a plurality of ceramic matrix composite (CMC) arc segments arranged in a row. There is a leak path through which gas from the engine core gas path can bypass an axial section of the engine core gas path. A CMC strip is disposed at the inter-segment interface between CMC arc segments to block the leak path and reduce leakage of the gas.Type: ApplicationFiled: May 13, 2022Publication date: November 16, 2023Inventors: Robert A. White, III, Andrew Joseph Lazur
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Publication number: 20210403389Abstract: In some examples, a method may include depositing, from a slurry comprising particles including silicon metal, a bond coat precursor layer including the particles comprising silicon metal directly on a ceramic matrix composite substrate. The method also may include locally heating the bond coat precursor layer to form a bond coat comprising silicon metal. Additionally, the method may include forming a protective coating on the bond coat. In some examples, an article may include a ceramic matrix composite substrate, a bond coat directly on the substrate, and a protective coating on the bond coat. The bond coat may include silicon metal and a metal comprising at least one of Zr, Y, Yb, Hf, Ti, Al, Cr, Mo, Nb, Ta, or a rare earth metal.Type: ApplicationFiled: February 3, 2021Publication date: December 30, 2021Inventors: Sungbo Shim, Kang N. Lee, Stephen Isaiah Harris, Andrew Joseph Lazur
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Patent number: 10941079Abstract: In some examples, a method may include depositing, from a slurry comprising particles including silicon metal, a bond coat precursor layer including the particles comprising silicon metal directly on a ceramic matrix composite substrate. The method also may include locally heating the bond coat precursor layer to form a bond coat comprising silicon metal. Additionally, the method may include forming a protective coating on the bond coat. In some examples, an article may include a ceramic matrix composite substrate, a bond coat directly on the substrate, and a protective coating on the bond coat. The bond coat may include silicon metal and a metal comprising at least one of Zr, Y, Yb, Hf, Ti, Al, Cr, Mo, Nb, Ta, or a rare earth metal.Type: GrantFiled: September 9, 2016Date of Patent: March 9, 2021Assignees: Rolls-Royce High Temperature Composites, Inc., Rolls-Royce CorporationInventors: Sungbo Shim, Kang N. Lee, Stephen Isaiah Harris, Andrew Joseph Lazur
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Patent number: 10774010Abstract: Techniques for infiltrating a CMC substrate may include infiltrating the CMC substrate with a first slurry to at least partially fill at least some inner spaces of the CMC substrate, where the first slurry includes first solid particles, drying the first slurry to form an infiltrated CMC including the first solid particles, depositing a second slurry including a carrier material and second solid particles on a surface of the infiltrated CMC, where the second solid particles include a plurality of fine ceramic particles, a plurality of coarse ceramic particles, and a plurality of diamond particles, drying the second slurry to form an article having an outer surface layer including the second solid particles on the infiltrated CMC, and infiltrating the article with a molten infiltrant to form a composite article.Type: GrantFiled: April 28, 2017Date of Patent: September 15, 2020Assignee: Rolls-Royce High Temperature Composites, Inc.Inventors: Sungbo Shim, Andrew Joseph Lazur, Robert Shinavski
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Patent number: 10767863Abstract: An annular assembly for a gas turbine engine and a method of making the annular assembly. The annular assembly comprises a supporting member comprising metal and including a support hole therethrough, and a liner tile made of ceramic matrix composite material. A plurality of the liner tile form an annular liner to shield hot combustion gases produced by the gas turbine engine. The liner tile is disposed adjacent the supporting member. A connecting member comprising ceramic material has a base element and a stem. The base element is embedded in the liner tile during construction of the liner tile to form an integrated structure therewith. A distal end of the stem passes through the support hole and is mated with a retaining member to retain the liner tile adjacent the supporting member.Type: GrantFiled: July 22, 2016Date of Patent: September 8, 2020Assignees: Rolls-Royce North American Technologies, Inc., Rolls-Royce CorporationInventors: Ted Joseph Freeman, Bruce E. Varney, Andrew Joseph Lazur
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Patent number: 10696008Abstract: Techniques for joining textile materials are provided. In one non-limiting form, a system includes a woven structure having a first woven layer and at least a first section and a second section. The first section includes a first fringe portion and a first set of fibers, and the second section includes a second fringe portion and a second set of fibers. The fibers of the first and second sets of fibers are configured in the first and second fringe portions to provide an interlocking arrangement between the first and second sections. Further embodiments, forms, features, and aspects shall become apparent from the description and drawings.Type: GrantFiled: December 27, 2013Date of Patent: June 30, 2020Assignee: Rolls-Royce CorporationInventor: Andrew Joseph Lazur
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Patent number: 10550711Abstract: In some examples, a coating may include at least one feature that facilitates visual determination of a thickness of the coating. For example, the coating may include a plurality of microspheres disposed at a predetermined depth of the coating. The plurality of microspheres may define a distinct visual characteristic. By inspecting the coating and viewing at least one of the microspheres, the thickness of the coating may be estimated. In some examples, the plurality of microspheres may be embedded in a matrix material, and the distinct visual characteristic of the microspheres may be different than the visual characteristic of the matrix material. In other examples, the at least one feature may include at least one distinct layer in the coating system that includes a distinct visual characteristic, such as a color of the distinct layer.Type: GrantFiled: December 16, 2016Date of Patent: February 4, 2020Assignee: Rolls Royce CorporationInventors: Adam Lee Chamberlain, Andrew Joseph Lazur, Kang N. Lee
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Patent number: 10344600Abstract: A novel ceramic matrix composite is disclosed for forming components that are operable in high temperature environments such those in gas turbine engines and the like. The ceramic matrix composite can include at least one layer of non-crimped fibers positioned substantially parallel to one another. A relatively small diameter elastic fiber can be constructed to stitch the non-crimped fibers together and a ceramic matrix may be deposited around the at least one layer of non-crimped fibers.Type: GrantFiled: July 7, 2017Date of Patent: July 9, 2019Assignee: Rolls-Royce CorporationInventor: Andrew Joseph Lazur
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Patent number: 10323326Abstract: An apparatus includes a ceramic matrix composite (CMC) component and an interface coating on the CMC component, wherein the interface coating includes a layer of at least one of the following compositions: 40-50 wt % Nb, 28-42 wt % Al, 4-15 wt % Cr, 1-2 wt % Si; 90-92 wt % Mo, 4-5 wt % Si, 4-5 wt % B; or 60-80 wt % V, 20-30 wt % Cr, 2-15 wt % Ti.Type: GrantFiled: November 22, 2016Date of Patent: June 18, 2019Assignee: Rolls-Royce CorporationInventors: Adam Lee Chamberlain, Kang N. Lee, Andrew Joseph Lazur
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Patent number: 10151207Abstract: A joint between a first preform component and a second preform component that are constructed for ultimate use in a gas turbine engine includes a plurality of extended fibers which may be integral with the first preform component and be at least partially enveloped by the second preform component. A method for making the component provides a first preform component having extended fibers integral therewith, and supplying a second preform component. The method further includes inserting the extended fibers at least partially into the second preform component body.Type: GrantFiled: January 29, 2016Date of Patent: December 11, 2018Assignee: Rolls-Royce CorporationInventor: Andrew Joseph Lazur
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Patent number: 10040094Abstract: In one example, article comprising a substrate defining an outer surface; a plurality of joint conduits formed in the outer surface of the substrate, wherein each conduit of the plurality of joint conduits exhibits an undercut configuration; and a coating formed on the outer surface of the substrate, wherein the coating substantially fills the plurality of joint conduits formed in the surface of the substrate.Type: GrantFiled: March 14, 2014Date of Patent: August 7, 2018Assignee: Rolls-Royce CorporationInventors: Andrew Joseph Lazur, Kang N. Lee, Adam Lee Chamberlain
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Publication number: 20170313629Abstract: The disclosure describes techniques for infiltrating a CMC substrate with a first slurry to at least partially fill at least some inner spaces of the CMC substrate, where the first slurry comprises first solid particles, drying the first slurry to form an infiltrated CMC including the first solid particles, depositing a second slurry including a carrier material and second solid particles on a surface of the infiltrated CMC, where the second solid particles comprise a plurality of fine ceramic particles, a plurality of coarse ceramic particles, and a plurality of diamond particles, drying the second slurry to form an article having an outer surface layer comprising the second solid particles on the infiltrated CMC, and infiltrating the article with a molten infiltrant to form a composite article.Type: ApplicationFiled: April 28, 2017Publication date: November 2, 2017Inventors: Sungbo Shim, Andrew Joseph Lazur, Robert Shinavski
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Publication number: 20170306769Abstract: A novel ceramic matrix composite is disclosed for forming components that are operable in high temperature environments such those in gas turbine engines and the like. The ceramic matrix composite can include at least one layer of non-crimped fibers positioned substantially parallel to one another. A relatively small diameter elastic fiber can be constructed to stitch the non-crimped fibers together and a ceramic matrix may be deposited around the at least one layer of non-crimped fibers.Type: ApplicationFiled: July 7, 2017Publication date: October 26, 2017Inventor: Andrew Joseph Lazur
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Patent number: 9726025Abstract: A novel ceramic matrix composite is disclosed for forming components that are operable in high temperature environments such those in gas turbine engines and the like. The ceramic matrix composite can include at least one layer of non-crimped fibers positioned substantially parallel to one another. A relatively small diameter elastic fiber can be constructed to stitch the non-crimped fibers together and a ceramic matrix may be deposited around the at least one layer of non-crimped fibers.Type: GrantFiled: December 5, 2013Date of Patent: August 8, 2017Assignee: Rolls-Royce CorporationInventor: Andrew Joseph Lazur
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Publication number: 20170138597Abstract: An annular assembly for a gas turbine engine and a method of making the annular assembly. The annular assembly comprises a supporting member comprising metal and including a support hole therethrough, and a liner tile made of ceramic matrix composite material. A plurality of the liner tile form an annular liner to shield hot combustion gases produced by the gas turbine engine. The liner tile is disposed adjacent the supporting member. A connecting member comprising ceramic material has a base element and a stem. The base element is embedded in the liner tile during construction of the liner tile to form an integrated structure therewith. A distal end of the stem passes through the support hole and is mated with a retaining member to retain the liner tile adjacent the supporting member.Type: ApplicationFiled: July 22, 2016Publication date: May 18, 2017Inventors: Ted Joseph Freeman, Bruce E. Varney, Andrew Joseph Lazur
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Publication number: 20170101883Abstract: In some examples, a coating may include at least one feature that facilitates visual determination of a thickness of the coating. For example, the coating may include a plurality of microspheres disposed at a predetermined depth of the coating. The plurality of microspheres may define a distinct visual characteristic. By inspecting the coating and viewing at least one of the microspheres, the thickness of the coating may be estimated. In some examples, the plurality of microspheres may be embedded in a matrix material, and the distinct visual characteristic of the microspheres may be different than the visual characteristic of the matrix material. In other examples, the at least one feature may include at least one distinct layer in the coating system that includes a distinct visual characteristic, such as a color of the distinct layer.Type: ApplicationFiled: December 16, 2016Publication date: April 13, 2017Inventors: Adam Lee Chamberlain, Andrew Joseph Lazur, Kang N. Lee