Patents by Inventor Eklavya Calla

Eklavya Calla 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: 20240158921
    Abstract: A composition includes aluminum (Al), and a blend of a carbide and nickel-chromium (Ni-20Cr). The method of applying a coating composition includes blending a carbide and nickel-chromium (Ni-20Cr) with aluminum (Al) to form a composition, the carbide and the nickel-chromium (Ni-20Cr) in a range between 90% and about 99.5% by weight of the composition, and wherein the aluminum (Al) is in a range between about 0.5% and less than about 10% by weight of the composition; and spraying the composition on the turbine component.
    Type: Application
    Filed: November 15, 2022
    Publication date: May 16, 2024
    Inventors: Eklavya Calla, Biju Dasan, Ritwik Biswas, Maxim Konter
  • Publication number: 20220290285
    Abstract: A high entropy ceramic (HEC) composition includes at least three different rare earth (RE) oxides and at least one of hafnium dioxide (HfO2) and zirconia oxide (ZrO2). The at least three different rare earth oxides being equimolar fractions. In one aspect, the high entropy ceramic (HEC) composition can be used in a thermal barrier coating.
    Type: Application
    Filed: April 15, 2021
    Publication date: September 15, 2022
    Inventors: Surinder Singh Pabla, Eklavya Calla, Mohandas Nayak, Arundhati Sengupta, Adarsh Shukla, Jon Conrad Schaeffer, Krishnamurthy Anand
  • Patent number: 11149354
    Abstract: Various embodiments include a dense abradable coating, a method of reducing rub damage to a turbine engine part by applying the dense abradable coating thereto, and a turbine engine part having the abradable coating thereon. Particular embodiments include a dense abradable coating including a pore-free metallic composite, a high-aluminum containing brittle alloy, and a plurality of hollow abradable particles.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: October 19, 2021
    Assignee: General Electric Company
    Inventors: Krishnamurthy Anand, Eklavya Calla, Biju Dasan, Surinder Singh Pabla, Priyanka Saxena
  • Publication number: 20200263558
    Abstract: Various embodiments include honeycomb structures including an abradable material, and a method of applying such honeycomb structures to steel components of a gas turbine engine in order to reduce rub damage. Particular embodiments include a honeycomb structure having a plurality of cells, each cell of the plurality of cells including a cell wall surrounding a void, and an abradable material within the void of each cell of the plurality of cells, the abradable material including a metallic alloy and hollow particles.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 20, 2020
    Inventors: Krishnamurthy Anand, Raghavendra Rao Adharapurapu, Eklavya Calla, Surinder Singh Pabla
  • Publication number: 20200263307
    Abstract: Various embodiments include a dense abradable coating, a method of reducing rub damage to a turbine engine part by applying the dense abradable coating thereto, and a turbine engine part having the abradable coating thereon. Particular embodiments include a dense abradable coating including a pore-free metallic composite, a high-aluminum containing brittle alloy, and a plurality of hollow abradable particles.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 20, 2020
    Inventors: Krishnamurthy Anand, Eklavya Calla, Biju Dasan, Surinder Singh Pabla, Priyanka Saxena
  • Patent number: 10711636
    Abstract: A system for coating a component is provided. The system includes a feedstock supply, a carrier fluid supply, and a thermal spray gun coupled in flow communication with the feedstock supply and the carrier fluid supply. The feedstock supply contains a substantially homogeneous powder mixture of a first powder and a second powder. The second powder is softer than the first powder and has a percentage by mass of the powder mixture of between about 0.1% and about 3.0%.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: July 14, 2020
    Assignee: General Electric Company
    Inventors: Eklavya Calla, Joydeep Pal, Krishnamurthy Anand
  • Patent number: 10315218
    Abstract: A method for repairing a Ni-based alloy component includes preparing a surface of the Ni-based alloy component for receiving a cold spray repair; spraying a stream of particles onto a the surface of the Ni-based alloy component to form a coating thereon; and removing any over-spray on the surface of the Ni-based alloy component. The particles are formed from an alloy material having a melting point such that the particles are sprayed at a spray temperature that is less than the melting point of the alloy material.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: June 11, 2019
    Assignee: General Electric Company
    Inventors: Anantharaman Mahalingam, Prabhakaran Manogharan, Shalini Thimmegowda, Eklavya Calla, Gopi Chandran Ramachandran
  • Publication number: 20190009300
    Abstract: A method for repairing a Ni-based alloy component is prepared. The method may include preparing a surface of the Ni-based alloy component for receiving a cold spray repair; spraying a stream of particles onto a the surface of the Ni-based alloy component to form a coating thereon; and removing any over-spray on the surface of the Ni-based alloy component. The particles may be formed from an alloy material having a melting point such that the particles are sprayed at a spray temperature that is less than the melting point of the alloy material.
    Type: Application
    Filed: July 6, 2017
    Publication date: January 10, 2019
    Inventors: Anantharaman Mahalingam, Prabhakaran Manogharan, Shalini Thimmegowda, Eklavya Calla, Gopi Chandran Ramachandran
  • Patent number: 10041361
    Abstract: A composition for a reinforced metal matrix coating, and a method of preparing and coating the composition. The composition includes a plurality of sacrificial metallic binder particles that is anodic with respect to a base substrate, and a plurality of hard particles.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: August 7, 2018
    Assignee: General Electric Company
    Inventors: Krishnamurthy Anand, Surinder Singh Pabla, Eklavya Calla
  • Publication number: 20170253821
    Abstract: A gas turbine process includes supplying a fuel to a gas turbine, combusting the fuel in the gas turbine with a hot gas path temperature reaching at least 1100° C. during operation of the gas turbine, and supplying an inhibition composition including at least one yttrium-containing inorganic compound to interact with the vanadium and inhibit vanadium hot corrosion in the gas turbine caused by vanadium as a fuel impurity in the fuel. A process includes supplying an inhibition composition including at least one yttrium-containing inorganic compound to a hot gas path or a combustor of a gas turbine. A fuel composition includes a fuel including at least one fuel impurity including vanadium and an inhibition composition including at least one yttrium-containing compound. An atomic ratio of yttrium to vanadium in the fuel composition is in a range of 1 to 1.5.
    Type: Application
    Filed: March 2, 2016
    Publication date: September 7, 2017
    Inventors: Pierre MONTAGNE, Krishnamurthy ANAND, Prajina BHATTACHARYA, Paul Stephen DIMASCIO, Jeffrey Scott GOLDMEER, Abdurrahman Abdallah KHALIDI, Praveen Babulal JAIN, Adarsh SHUKLA, Eklavya CALLA, Paul Burchell GLASER
  • Publication number: 20170175570
    Abstract: A system for coating a component is provided. The system includes a feedstock supply, a carrier fluid supply, and a thermal spray gun coupled in flow communication with the feedstock supply and the carrier fluid supply. The feedstock supply contains a substantially homogeneous powder mixture of a first powder and a second powder. The second powder is softer than the first powder and has a percentage by mass of the powder mixture of between about 0.1% and about 3.0%.
    Type: Application
    Filed: December 22, 2015
    Publication date: June 22, 2017
    Inventors: Eklavya Calla, Joydeep Pal, Krishnamurthy Anand
  • Publication number: 20170043424
    Abstract: A method for joining a ceramic component to a metallic component is described. At least one layer of molybdenum is applied to a surface of the ceramic component, by a high-velocity molybdenum wire spray technique. A layer of a nickel-based braze composition is then applied over the molybdenum layer. The braze composition and the ceramic and metallic components are then heated to a sufficient brazing temperature, so as to provide a braze joint between the components. The method can be used to seal an open region of a thermal battery, e.g., a sodium metal halide-based battery.
    Type: Application
    Filed: August 10, 2015
    Publication date: February 16, 2017
    Inventors: Sundeep Kumar, Eklavya Calla
  • Patent number: 9548518
    Abstract: A method for joining a ceramic component to a metallic component is described. At least one initial layer of an active metal is applied to one of the joining surfaces, by a cold spray technique. At least one second layer of a nickel-based braze composition is then applied over the initial layer by cold-spraying. The braze composition and components are then heated, so as to form an active braze joint between them. A method of sealing an open region of a sodium metal halide-based battery is also disclosed, using the brazing technique described herein to form braze joints that seal various components in the battery cells, such as metallic rings and ceramic collar structures.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: January 17, 2017
    Assignee: General Electric Company
    Inventors: Sundeep Kumar, Eklavya Calla, Mohamed Rahmane
  • Publication number: 20160172713
    Abstract: A method for joining a ceramic component to a metallic component is described. At least one initial layer of an active metal is applied to one of the joining surfaces, by a cold spray technique. At least one second layer of a nickel-based braze composition is then applied over the initial layer by cold-spraying. The braze composition and components are then heated, so as to form an active braze joint between them. A method of sealing an open region of a sodium metal halide-based battery is also disclosed, using the brazing technique described herein to form braze joints that seal various components in the battery cells, such as metallic rings and ceramic collar structures.
    Type: Application
    Filed: December 16, 2014
    Publication date: June 16, 2016
    Inventors: Sundeep Kumar, Eklavya Calla, Mohamed Rahmane
  • Patent number: 9347126
    Abstract: A process of fabricating a thermal barrier coating is disclosed. The process includes cold spraying a substrate with a feedstock to form a thermal barrier coating and concurrently oxidizing one or more of the substrate, the feedstock, and the thermal barrier coating. The cold spraying is in a region having an oxygen concentration of at least 10%. In another embodiment, the process includes heating a feedstock with a laser and cold spraying a substrate with the feedstock to form a thermal barrier coating. At least a portion of the feedstock is retained in the thermal barrier coating. In another embodiment, the process of fabricating a thermal barrier coating includes heating a substrate with a laser and cold spraying the substrate with a feedstock to form a thermal barrier coating.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 24, 2016
    Assignee: General Electric Company
    Inventors: Surinder Singh Pabla, Joshua Lee Margolies, Eklavya Calla, Padmaja Parakala
  • Publication number: 20160115797
    Abstract: A coated article and a method for producing a coating are disclosed. The method for producing a coating includes providing an iron-based alloy substrate, and depositing a protective coating over a surface of the iron-based alloy substrate. The protective coating includes a cobalt-chromium-based coating material having at least one anodic element distributed therein. The at least one anodic element being anodic to the iron-based alloy substrate. Another method for producing a coating includes providing an iron-based alloy substrate, depositing an underlayer including at least one anodic element over a surface of the iron-based alloy substrate, and depositing a top coat including a cobalt-chromium-based coating material over the underlayer. The at least one anodic element being anodic to the iron-based alloy substrate. The coated article includes a protective coating having at least one anodic element distributed therein deposited over a surface of an iron-based alloy substrate.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 28, 2016
    Inventors: Eklavya CALLA, Krishnamurthy ANAND, Surinder Singh PABLA
  • Publication number: 20160108509
    Abstract: A composition for a reinforced metal matrix coating, and a method of preparing and coating the composition. The composition includes a plurality of sacrificial metallic binder particles that is anodic with respect to a base substrate, and a plurality of hard particles.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 21, 2016
    Inventors: Krishnamurthy Anand, Surinder Singh Pabla, Eklavya Calla
  • Patent number: 9138838
    Abstract: A method of repairing a damaged rotor comprising: (a) preparing a locally damaged portion of the rotor; (b) cold spraying alloy powder particles onto the locally damaged portion; (c) controlling the cold spraying in step (b) to restore the locally damaged portion to form a repaired portion having substantially the same properties and shape as originally manufactured; and (d) heat treating at least the repaired portion.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: September 22, 2015
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Eklavya Calla, Surinder Pabla, Raymond Goetze
  • Patent number: 8974588
    Abstract: A coating composition, a process of applying a coating having a coating composition, and a process of forming a coating composition are disclosed. The coating composition includes an alloy and an oxide component comprising nickel oxide. The process of applying the coating includes cold spraying the coating onto the article. The process of forming the coating composition includes blending and milling the alloy with the oxide component.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: March 10, 2015
    Assignee: General Electric Company
    Inventors: Yuk-Chiu Lau, Surinder Singh Pabla, David Vincent Bucci, Paul Mathew, Ronald Ralph Cairo, Krishnamurthy Anand, Guruprasad Sundararajan, Mohandas Nayak, Eklavya Calla
  • Publication number: 20140190834
    Abstract: A plated component and a plating process are disclosed. The plating process includes applying a material to a region of a component, the material being selected from the group consisting of nickel, cobalt, chromium, iron, aluminum, or a combination thereof. The region includes a single crystal microstructure, includes a directionally solidified microstructure, is substantially devoid of equiaxed microstructure, or a combination thereof. The applying includes electroplating, electroless plating, or the electroplating and the electroless plating. The plated component includes an electroplated region, an intermediate layer on the electroplated region, and an overlay coating on the intermediate layer.
    Type: Application
    Filed: January 7, 2013
    Publication date: July 10, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Eklavya CALLA, Krishnamurthy ANAND, Chakrakody SHASTRY