Patents by Inventor Christopher W. Strock

Christopher W. Strock 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).

  • Geometrically segmented abradable ceramic thermal barrier coating with improved spallation resistance
    Patent number: 11319829
    Abstract: A turbine article includes a substrate with a geometric surface having a multiple of divots recessed into the substrate, and a ceramic topcoat disposed over the geometric surface, the topcoat including at least a first layer having a first hardness and a second layer having a second hardness, the first hardness different than the second hardness.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: May 3, 2022
    Assignee: Raytheon Technologies Corporation
    Inventor: Christopher W. Strock
  • Abradable coating hBN filler material and method of manufacture
    Patent number: 11268042
    Abstract: A process for solid lubricant filler powder used in abradable coating manufacture comprising mixing a bentonite clay and a hexagonal boron nitride powder to form a mixture of the bentonite clay and the hexagonal boron nitride powder; consolidating the bentonite clay and the hexagonal boron nitride powder to form a composite material; heat treating the composite material to at least 500 degrees centigrade; breaking up the composite material into a variety of sizes; and segregating the composite material to produce a final product of free flowing, low dust powder of composite hexagonal boron nitride and calcined bentonite.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: March 8, 2022
    Assignee: Raytheon Technologies Corporation
    Inventor: Christopher W. Strock
  • Method of forming an abrasive coating on a fan blade tip
    Patent number: 11268183
    Abstract: A novel method of depositing grit particles onto a fan blade tip coating is provided. The method enhances grit capture by presenting a softened coating surface for the impinging particles. The softened surface is achieved without high substrate temperatures that could degrade the base metal properties in the fan blade. An auxiliary heat source is used to establish a locally heated and softened surface where the grit deposition takes place. The softened surface greatly increases the probability of grit capture.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: March 8, 2022
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Christopher W. Strock, Paul M. Lutjen
  • METHOD OF MANUFACTURING FIBER REINFORCED BARRIER COATING
    Publication number: 20210404045
    Abstract: A method of manufacturing a fiber reinforced coating. The method includes providing a substrate and plasma spraying a ceramic matrix having fibers encapsulated in a precursor material onto the substrate.
    Type: Application
    Filed: September 10, 2021
    Publication date: December 30, 2021
    Inventor: Christopher W. Strock
  • BLADE WITH ABRASIVE TIP
    Publication number: 20210363886
    Abstract: A blade includes an airfoil section extending between leading and trailing edges, first and second opposed sides each joining the leading and trailing edges, and an inner end and a free end. The blade also includes an abrasive tip at the free end of the airfoil section. The abrasive tip includes particles disposed in a matrix material. The matrix material is a polymeric material that has a glass transition temperature greater than or equal to about 225 degrees C. (487 degrees F.). A gas turbine engine and a method of fabricating a blade are also disclosed.
    Type: Application
    Filed: May 22, 2020
    Publication date: November 25, 2021
    Inventor: Christopher W. Strock
  • Substrate Edge Configurations for Ceramic Coatings
    Publication number: 20210355838
    Abstract: In a method for manufacturing an article, the article has a body having: a first face; and a first bevel surface extending from the first face. A plurality of first channels along the first bevel surface extending from the first face. A ceramic coating is along the inner diameter surface and the first bevel surface. Each of the first channels are machined in the body by plunging a rotating bit into the first surface and drawing the rotating bit down the bevel surface. The coating is thereafter applied.
    Type: Application
    Filed: July 26, 2021
    Publication date: November 18, 2021
    Applicant: Raytheon Technologies Corporation
    Inventor: Christopher W. Strock
  • THERMAL BARRIER COATING WITH REDUCED EDGE CRACK INITIATION STRESS AND HIGH INSULATING FACTOR
    Publication number: 20210348562
    Abstract: A thermal barrier coating disposed on a substrate comprising a plurality of surface features formed on the substrate proximate an inner side of the substrate, each of the plurality of surface features comprising a metallic column having a top with rounded edges; a dense layer disposed in a valley located between each of the plurality of surface features, and the dense layer disposed on the top and covering the rounded edges; a thermally insulating topcoat disposed over the plurality of surface features.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 11, 2021
    Applicant: Raytheon Technologies Corporation
    Inventor: Christopher W. Strock
  • ABRADABLE COATING hBN FILLER MATERIAL AND METHOD OF MANUFACTURE
    Publication number: 20210348077
    Abstract: A process for solid lubricant filler powder used in abradable coating manufacture comprising mixing a bentonite clay and a hexagonal boron nitride powder to form a mixture of the bentonite clay and the hexagonal boron nitride powder; consolidating the bentonite clay and the hexagonal boron nitride powder to form a composite material; heat treating the composite material to at least 500 degrees centigrade; breaking up the composite material into a variety of sizes; and segregating the composite material to produce a final product of free flowing, low dust powder of composite hexagonal boron nitride and calcined bentonite.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 11, 2021
    Applicant: Raytheon Technologies Corporation
    Inventor: Christopher W. Strock
  • Solution Based Corrosion Inhibitors for Aluminum Alloy Thermal Spray Coatings
    Publication number: 20210348278
    Abstract: A method (400) for applying a coating to a substrate (124) includes spraying (414) an aluminum-based coating layer (120) on the substrate. The coating layer is then infiltrated (420) with an aqueous solution (610). The solution comprises: a source of chromium; and potassium hexafluorozirconate.
    Type: Application
    Filed: September 20, 2019
    Publication date: November 11, 2021
    Applicant: Raytheon Technologies Corporation
    Inventors: Christopher W. Strock, William J. Joost, Promila P. Bhaatia
  • PROCESS AND MATERIAL CONFIGURATION FOR MAKING HOT CORROSION RESISTANT HPC ABRASIVE BLADE TIPS
    Publication number: 20210332715
    Abstract: An abrasive coating system for a substrate of an airfoil in a turbine engine high pressure compressor, comprising a plurality of grit particles adapted to be placed on a top surface of the substrate; a matrix material bonded to the top surface; the matrix material partially surrounds the grit particles, the matrix material consisting of unalloyed chromium and unalloyed aluminum distributed throughout the matrix material, wherein the grit particles extend above the matrix material relative to the top surface; and a film of oxidant resistant coating applied over the plurality of grit particles and the matrix material.
    Type: Application
    Filed: April 24, 2020
    Publication date: October 28, 2021
    Applicant: Raytheon Technologies Corporation
    Inventor: Christopher W. Strock
  • THERMAL BARRIER COATING FOR GAS TURBINE ENGINE COMPONENTS
    Publication number: 20210324506
    Abstract: A component for a gas turbine engine according to an exemplary embodiment of the present disclosure can include a substrate, a thermal barrier coating deposited on at least a portion of the substrate, and an outer layer deposited on at least a portion of the thermal barrier coating. The outer layer can include a material that is reactive with an environmental contaminant that comes into contact with the outer layer to alter a microstructure of the outer layer.
    Type: Application
    Filed: June 28, 2021
    Publication date: October 21, 2021
    Inventors: Christopher W. Strock, III, Michael J. Maloney, David A. Litton, Benjamin Joseph Zimmerman, Brian T. Hazel
  • Gas turbine engine component coating with self-healing barrier layer
    Patent number: 11149338
    Abstract: A method of providing a self-healing coating includes providing substrate, applying a layer of an aluminum-containing MAX phase material and another material to the substrate. The method includes exposing the layer to a temperature greater than 2000° F. to form alpha aluminum.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: October 19, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Christopher W. Strock, Shahram Amini
  • Turbine engine seal for high erosion environment
    Patent number: 11149744
    Abstract: A seal for a gas turbine engine including an interlayer between a substrate and an abradable layer, the interlayer containing abrasive particles of which at least some abrasive particles protrude out of an interface that abuts the abradable layer.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: October 19, 2021
    Assignee: Raytheon Technologies Corporation
    Inventor: Christopher W. Strock
  • Substrate edge configurations for ceramic coatings
    Patent number: 11131206
    Abstract: An article has a body having: a first face; and a first bevel surface extending from the first face. A plurality of first channels along the first bevel surface extending from the first face. A ceramic coating is along the inner diameter surface and the first bevel surface.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: September 28, 2021
    Assignee: Raytheon Technologies Corporation
    Inventor: Christopher W. Strock
  • Chemistry based methods of manufacture for MAXMET composite powders
    Patent number: 11125102
    Abstract: A method of manufacturing a gas turbine engine air seal comprising forming at least one MAX phase particle. The method includes coating the at least one MAX phase particle with a metallic shell. The method includes applying the at least one MAX phase metallic coated particle to a surface of a substrate of the air seal to form an abradable layer of a MAXMET composite abradable material from the at least on MAX phase metallic coated particle.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: September 21, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: Shahram Amini, Christopher W. Strock, Weina Li
  • Method of manufacturing fiber reinforced barrier coating
    Patent number: 11118257
    Abstract: A method of manufacturing a fiber reinforced coating. The method includes providing a substrate and plasma spraying a ceramic matrix having fibers encapsulated in a precursor material onto the substrate.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: September 14, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventor: Christopher W. Strock
  • GEOMETRICALLY SEGMENTED ABRADABLE CERAMIC THERMAL BARRIER COATING WITH IMPROVED SPALLATION RESISTANCE
    Publication number: 20210277792
    Abstract: A turbine article includes a substrate with a geometric surface having a multiple of divots recessed into the substrate, and a ceramic topcoat disposed over the geometric surface, the topcoat including at least a first layer having a first hardness and a second layer having a second hardness, the first hardness different than the second hardness.
    Type: Application
    Filed: May 24, 2021
    Publication date: September 9, 2021
    Applicant: Raytheon Technologies Corporation
    Inventor: Christopher W. Strock
  • Abradable layer with glass microballoons
    Patent number: 11111807
    Abstract: A gas turbine engine includes a circumferential row of blades, with the blades having respective blade tips. A seal is disposed about the blades. The seal has an abradable layer which the tips of the blades, at times, rub against when the blades rotate. The rubbing produces a maximum temperature at the abradable layer. The abradable layer includes a metal matrix and microballoons dispersed in the metal matrix. The microballoons are formed of a glass that has a glass transition temperature that is approximately 50° F. to 300° F. greater than the maximum temperature.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: September 7, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Kevin Seymour, Christopher W. Strock
  • Ceramic coating system and method
    Patent number: 11098399
    Abstract: A gas turbine engine article includes a substrate and a bond coating that covers at least a portion of the substrate with a step formed in at least one of the substrate and the bond coating. A thermally insulating topcoat is disposed on the bond coating. The thermally insulating topcoat includes a first topcoat portion separated by at least one fault that extends through the thermally insulating topcoat from a second topcoat portion.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: August 24, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Jose R. Paulino, Christopher W. Strock
  • Turbine abrasive blade tips with improved resistance to oxidation
    Patent number: 11073028
    Abstract: An abrasive coating for a substrate of a component in a gas path exposed to a maximum temperature of 1750 degree Fahrenheit, comprising a plurality of grit particles adapted to be placed on a top surface of the substrate; a matrix material bonded to the top surface; the matrix material partially surrounds the grit particles, wherein the grit particles extend above the matrix material relative to the top surface; a film of oxidant resistant coating applied over the plurality of grit particles and the matrix material and a thermal barrier coating material applied over said film of oxidant resistant coating.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: July 27, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: Christopher W. Strock, Kevin Seymour