Patents by Inventor Michael Francis Xavier Gigliotti, Jr.
Michael Francis Xavier Gigliotti, Jr. 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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Patent number: 8293324Abstract: A coating process and system suitable for use on components subjected to high temperatures. The coating system includes an overlay coating of predominantly B2 phase rhodium aluminide (RhAl) intermetallic compound containing about 25 to about 90 atomic percent rhodium, about 10 to about 60 atomic percent aluminum, optionally up to a combined total of about 25 atomic percent of one or more platinum group metals chosen from the group consisting of platinum, palladium, ruthenium, and iridium, and up to about 20 atomic percent of the base metal and alloying constituents of the substrate. The RhAl intermetallic coating may serve as an environmental coating, a diffusion barrier layer for an overlying environmental coating, or both, with or without an outer ceramic coating.Type: GrantFiled: April 7, 2008Date of Patent: October 23, 2012Assignee: General Electric CompanyInventors: Liang Jiang, Michael Francis Xavier Gigliotti, Jr., Mark Daniel Gorman, Ramgopal Darolia
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Publication number: 20120251330Abstract: A component such as a turbine bucket or blade, and method for making the component, are presented. One embodiment is an article that comprises an airfoil casting portion comprising a plurality of integral regions, wherein the plurality of integral regions comprises a single-crystalline region and a columnar-grained region. Another embodiment is a method for fabricating an article. The method comprises providing a quantity of molten metal; providing a mold defining an airfoil portion having an axial direction and a transverse direction, wherein the airfoil portion of the mold comprises a single-crystal growth region and a columnar growth region disposed along the transverse direction from the single crystal growth region; introducing the molten metal into the mold; and solidifying the metal such that a solidification front progresses in the axial direction to produce an airfoil casting portion comprising a single-crystalline region and a columnar-grained region.Type: ApplicationFiled: March 31, 2011Publication date: October 4, 2012Applicant: General Electric CompanyInventors: Akane Suzuki, Stephen Francis Rutkowski, Michael Francis Xavier Gigliotti, JR.
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Patent number: 8210240Abstract: A casting process and apparatus for producing directionally-solidified castings, and castings produced therewith. The process entails applying a facecoat slurry to a surface within a mold cavity to form a continuous solid facecoat on the surface, introducing a molten metal alloy into the mold cavity so that the molten metal alloy contacts the facecoat, and then immersing the mold in a liquid coolant to cool and solidify the molten metal alloy and form a casting of the metal alloy, during which an oxide layer forms on the casting surface. The facecoat is sufficiently adherent to the oxide layer such that at least a portion of the facecoat detaches from the mold surface and remains tightly adhered to the casting surface in the event the casting contracts during cooling. The facecoat contains at least 60 weight percent of a first phase of yttria, and the balance of the facecoat is a binder phase of an inorganic material.Type: GrantFiled: May 29, 2009Date of Patent: July 3, 2012Assignee: General Electric CompanyInventors: Shyh-Chin Huang, Stephen Francis Rutkowski, Michael Francis Xavier Gigliotti, Jr., Roger John Petterson, Lawrence Bernard Kool
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Publication number: 20120103604Abstract: In one aspect, the present invention provides a subsurface heating device comprising: (a) a combustion conduit casing defining a combustion conduit; (b) at least two combustors disposed within the combustion conduit casing; (c) at least one fuel supply conduit; d) at least one oxygen supply conduit configured to supply oxygen to at least one combustor; and (e) a combustion product gas outlet. The at least two combustors are characterized by an inter-combustor distance of at least one thousand feet and a combustion power of at least 3.41 million BTU per hour. The at least one fuel supply conduit is configured to supply a combustible fuel to at least one combustor. Also provided in another aspect of the present invention, is a method for heating a subsurface zone.Type: ApplicationFiled: October 29, 2010Publication date: May 3, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Sherif Hatem Abdulla Mohamed, Richard Blair Sheldon, Ahmed Mostafa ELKady, Andrei Tristan Evulet, Michael Francis Xavier Gigliotti, JR., James William Bray
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Publication number: 20110076180Abstract: Rhenium-free nickel based alloys are provided. More particularly, the alloys comprise preferred levels and ratios of elements so as to achieve good high temperature strength of both gamma matrix phase and gamma prime precipitates, as well as good environmental resistance, without using rhenium. When cast and directionally solidified into single crystal form, the alloys exhibit creep and oxidation resistance substantially equivalent to or better than rhenium-bearing single-crystal alloys. Further, the alloys can be processed by directional solidification into articles in single crystal form or columnar structure comprising fine dendrite arm spacing, e.g., less than 400 ?m, if need be, so that further improvements in mechanical properties in the articles can be seen.Type: ApplicationFiled: September 30, 2009Publication date: March 31, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Akane Suzuki, Michael Francis Xavier Gigliotti, JR., Shyh-Chin Huang, Pazhayannur Ramanathan Subramanian
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Publication number: 20110076182Abstract: Rhenium-free nickel based alloys are provided. More particularly, the alloys comprise preferred levels and ratios of elements so as to achieve good high temperature strength of both gamma matrix phase and gamma prime precipitates, as well as good environmental resistance, without using rhenium. When cast and directionally solidified into single crystal form, the alloys exhibit creep resistance substantially equivalent to rhenium-bearing single-crystal alloys. Further, the alloys can be processed by directional solidification into articles in single crystal form or columnar structure comprising fine dendrite arm spacing, e.g., less than 400 ?m, if need be, so that further improvements in mechanical properties in the articles can be seen.Type: ApplicationFiled: September 30, 2009Publication date: March 31, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Akane Suzuki, Michael Francis Xavier Gigliotti, JR., Shyh-Chin Huang, Pazhayannur Ramanathan Subramanian
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Publication number: 20110076181Abstract: Rhenium-free nickel based alloys are provided. More particularly, the alloys comprise preferred levels and ratios of elements so as to achieve good high temperature strength of both gamma matrix phase and gamma prime precipitates, as well as good environmental resistance, without using rhenium. When cast and directionally solidified into single crystal form, the alloys exhibit oxidation resistance better than or comparable to rhenium-bearing single-crystal alloys, and creep rupture life comparable to rhenium-bearing single-crystal alloys. Further, the alloys can be processed by directional solidification into articles in single crystal form or columnar structure comprising fine dendrite arm spacing, e.g., less than 400 ?m, if need be, so that further improvements in mechanical properties in the articles can be seen.Type: ApplicationFiled: September 30, 2009Publication date: March 31, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Akane Suzuki, Michael Francis Xavier Gigliotti, Jr., Shyh-Chin Huang, Pazhayannur Ramanathan Subramanian
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Publication number: 20100291406Abstract: A cobalt-nickel alloy composition is described, containing about 20% to about 28% cobalt; about 37% to about 46% nickel; at least about 6% chromium; aluminum; and at least one refractory metal. The total weight of cobalt, aluminum, and refractory metal in the composition is less than about 50% of the total weight of the composition. Moreover, the alloy composition comprises both a (Co, Ni)-gamma phase and an L12-structured (gamma prime) phase. Various components made from the cobalt-nickel alloy composition are also described. Examples include high-temperature machinery and devices, e.g., components of gas turbine engines.Type: ApplicationFiled: May 14, 2009Publication date: November 18, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Akane Suzuki, Michael Francis Xavier Gigliotti, JR.
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Publication number: 20100242607Abstract: A method for determining a location of incipient damage of an object comprises insonifying the object at a plurality of locations using ultrasonic signals during an inspection, acquiring signals indicative of a possible damage condition from the plurality of locations of the insonified object in said inspection, determining a value for each of the locations to indicate accumulated damage by mathematically combining the acquired signals from said inspection and at least a portion of prior inspections, and comparing the values of the plurality of locations to determine a location indicating possible incipient damage.Type: ApplicationFiled: March 24, 2009Publication date: September 30, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Ramkumar Kashyap Oruganti, Michael Francis Xavier Gigliotti, JR., Edward James Nieters, Sivaramanivas Ramaswamy, Ganesan Baskaran, Balachandar Ramadurai
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Patent number: 7790101Abstract: Articles for use with highly reactive alloys that include a graphite crucible having an interior, and at least a first protective layer applied to the interior of the graphite crucible in which the graphite crucible having the first protective layer is used for melting highly reactive alloys.Type: GrantFiled: December 27, 2006Date of Patent: September 7, 2010Assignee: General Electric CompanyInventors: Thomas Joseph Kelly, Michael James Weimer, Bernard Patrick Bewlay, Michael Francis Xavier Gigliotti, Jr.
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Publication number: 20100170654Abstract: Casting molds suitable for directional solidification processes using a liquid cooling bath include a graded facecoat structure on a mold body. The graded facecoat structure includes an innermost layer and a delamination layer, wherein the delamination layer fractures upon cooling of the molten metal so as to separate the mold body from the innermost layer, which remains in contact with or in close proximity to the metal being cast. Also disclosed are directional solidification processes.Type: ApplicationFiled: January 6, 2009Publication date: July 8, 2010Applicant: General Electric CompanyInventors: Shyh-Chin Huang, Andrew John Elliott, Michael Francis Xavier Gigliotti, JR., Roger John Petterson, Stephen Francis Rutkowski
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Publication number: 20100147481Abstract: A method for manufacturing a casted article is presented. The method includes steps of forming a casted article by a liquid metal cooled directional solidification process, removing a metallic material from a surface of the casted article and inspecting the surface of the casted article. The surface of the casted article is inspected for the presence of the metallic material by exposing the surface to a visualization reagent. A system for manufacturing the casted article is also presented.Type: ApplicationFiled: June 30, 2009Publication date: June 17, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Lawrence Bernard Kool, Shyh-Chin Huang, Michael Francis Xavier Gigliotti,, JR., Cheryl Margaret Surman, Andrew Michael Leach, Andrew J. Elliott
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Publication number: 20100147080Abstract: An ultrasonic transducer comprises a transmitting element for transmitting an ultrasonic signal at a fundamental frequency and a receiving element adaptable for multiple receive water path operations and for receiving ultrasonic signals at the fundamental frequency and harmonics of the fundamental frequency.Type: ApplicationFiled: December 16, 2008Publication date: June 17, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Edward James Nieters, Michael Francis Xavier Gigliotti, JR., James Norman Barshinger
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Patent number: 7582133Abstract: Methods for reducing carbon contamination when melting highly reactive alloys involving providing a graphite crucible having an interior, applying at least a first protective layer to the interior of the graphite crucible, placing a highly reactive alloy into the crucible having the first protective layer, and melting the highly reactive alloy to obtain a melted alloy having reduced carbon contamination.Type: GrantFiled: December 27, 2006Date of Patent: September 1, 2009Assignee: General Electric CompanyInventors: Thomas Joseph Kelly, Michael James Weimer, Bernard Patrick Bewlay, Michael Francis Xavier Gigliotti, Jr.
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Publication number: 20090061086Abstract: A coating process and system suitable for use on components subjected to high temperatures. The coating system includes an overlay coating of predominantly B2 phase rhodium aluminide (RhAl) intermetallic compound containing about 25 to about 90 atomic percent rhodium, about 10 to about 60 atomic percent aluminum, optionally up to a combined total of about 25 atomic percent of one or more platinum group metals chosen from the group consisting of platinum, palladium, ruthenium, and iridium, and up to about 20 atomic percent of the base metal and alloying constituents of the substrate. The RhAl intermetallic coating may serve as an environmental coating, a diffusion barrier layer for an overlying environmental coating, or both, with or without an outer ceramic coating.Type: ApplicationFiled: April 7, 2008Publication date: March 5, 2009Applicant: General Electric CompanyInventors: Liang Jiang, Michael Francis Xavier Gigliotti, JR., Mark Daniel Gorman, Ramgopal Darolia
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Patent number: 7416790Abstract: A coating process and system suitable for use on components subjected to high temperatures. The coating system includes an overlay coating of predominantly B2 phase rhodium aluminide (RhAl) intermetallic compound containing about 25 to about 90 atomic percent rhodium, about 10 to about 60 atomic percent aluminum, optionally up to a combined total of about 25 atomic percent of one or more platinum group metals chosen from the group consisting of platinum, palladium, ruthenium, and iridium, and up to about 20 atomic percent of the base metal and alloying constituents of the substrate. The RhAl intermetallic coating may serve as an environmental coating, a diffusion barrier layer for an overlying environmental coating, or both, with or without an outer ceramic coating.Type: GrantFiled: December 8, 2006Date of Patent: August 26, 2008Assignee: General Electric CompanyInventors: Liang Jiang, Michael Francis Xavier Gigliotti, Jr., Mark Daniel Gorman, Ramgopal Darolia
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Patent number: 7329471Abstract: A solid oxide fuel cell comprises at least one hollow manifold, an anode, an electrolyte, and a cathode. The at least one hollow manifold comprises a wall that defines a chamber therein. A plurality of openings extending through, such that the plurality of openings are in flow communication with the chamber. The anode is formed on an exterior surface of the wall. The electrolyte is deposited on the anode, and the cathode is deposited on the electrolyte.Type: GrantFiled: December 10, 2002Date of Patent: February 12, 2008Assignee: General Electric CompanyInventors: Richard Scott Bourgeois, Richard Louis Hart, Melvin Robert Jackson, Chang Wei, Canan Uslu Hardwicke, Michael Francis Xavier Gigliotti, Jr.
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Patent number: 7300708Abstract: An erosion resistant protective structure for a turbine engine component comprises a shape memory alloy. The shape memory alloy includes nickel-titanium based alloys, indium-titanium based alloys, nickel-aluminum based alloys, nickel-gallium based alloys, copper based alloys, gold-cadmium based alloys, iron-platinum based alloys, iron-palladium based alloys, silver-cadmium based alloys, indium-cadmium based alloys, manganese-copper based alloys, ruthenium-niobium based alloys, ruthenium-tantalum based alloys, titanium based alloys, iron-based alloys, or combinations comprising at least one of the foregoing alloys. Also, disclosed herein are methods for forming the shape memory alloy onto turbine component.Type: GrantFiled: March 16, 2004Date of Patent: November 27, 2007Assignee: General Electric CompanyInventors: Michael Francis Xavier Gigliotti, Jr., Canan Uslu Hardwicke, Liang Jiang, John William Short, Don Mark Lipkin, Jonathan Paul Blank, Krishnamurthy Anand
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Patent number: 7296616Abstract: A shell mold for casting molten material to form an article is described. The mold includes a shell for containing the molten material, formed from at least one of yttrium silicates, zirconium silicates, hafnium silicates, and rare earth silicates. The mold also includes a facecoat disposed on an inner surface of the shell that contacts the molten material. The facecoat can be made from the materials described above. A method of casting a niobium-silicide article is also described, using the shell mold described herein. A method of making the ceramic shell mold is described as well, along with a slurry composition used in the manufacture of the shell mold.Type: GrantFiled: December 22, 2004Date of Patent: November 20, 2007Assignee: General Electric CompanyInventors: Bernard Patrick Bewlay, Laurent Cretegny, Michael Francis Xavier Gigliotti, Jr., Roger John Petterson, Ann Melinda Ritter, Stephen Francis Rutkowski
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Patent number: 6909988Abstract: A process for positioning at least one defect in a billet being forged into an article is described. The size and location of the billet is first determined, using a non-destructive test such as ultrasonic inspection. The movement of the defect under selected forging conditions is then predicted, using a finite element analysis model. The billet can then be positioned and forged under conditions which cause the defect to move to a non-critical area of the article. In this manner, a billet which might otherwise be discarded or set aside can often be retained for a useful purpose. Related articles are also described.Type: GrantFiled: October 15, 2002Date of Patent: June 21, 2005Assignee: General Electric CompanyInventors: Thomas James Batzinger, Michael Francis Xavier Gigliotti, Jr., Bernard Patrick Bewlay, Shesh Krishna Srivatsa