Patents by Inventor Alan D. Cetel

Alan D. Cetel 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: 20120112391
    Abstract: A crucible includes a composite of least two materials. The two materials are selected from a group consisting of alumina, calcia, yttria, erbia, gadolinia, magnesia, hafnia, and zirconia in a composition that has better resistance to reaction with hafnium from a molten hafnium-containing alloy than a nominal crucible composition of 70 wt % magnesia and 30 wt % alumina.
    Type: Application
    Filed: November 5, 2010
    Publication date: May 10, 2012
    Inventors: Mario P. Bochiechio, John Joseph Marcin, Alan D. Cetel, Dilip M. Shah, Kevin W. Schlichting
  • Publication number: 20110256421
    Abstract: A metallic coating for use in a high temperature application is created from a nickel base alloy containing from 5.0 to 10.5 wt % aluminum, from 4.0 to 15 wt % chromium, from 2.0 to 8.0 wt % tungsten, from 3.0 to 10 wt % tantalum, and the balance nickel. The metallic coating has particular utility in protecting single crystal superalloys used in high temperature applications such as turbine engine components.
    Type: Application
    Filed: April 16, 2010
    Publication date: October 20, 2011
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Sudhangshu Bose, Alan D. Cetel, David A. Litton, Michael J. Maloney, Venkatarama K. Seetharaman, Shiela Woodard
  • Publication number: 20110143164
    Abstract: A coated article having an improved coating oxidation life includes a superalloy substrate material having a composition which includes sulfur, herein the sulfur is present in an amount less than 1 ppm; and an overlay coating formed over a surface of the substrate material.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 16, 2011
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Alan D. Cetel, Dilip M. Shah
  • Patent number: 7871247
    Abstract: A high modulus component, such as an aircraft engine turbine blade, is formed from a base metal that has a high modulus crystallographic orientation that is aligned with the primary, i.e. radial, direction of the turbine blade. The base metal is Ni, Fe, Ti, Co, Al, Nb, or Mo based alloy. Alignment of a high modulus direction of the base metal with the primary direction provides enhanced high cycle fatigue life.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: January 18, 2011
    Assignee: United Technologies Corporation
    Inventors: Dilip M. Shah, Alan D. Cetel, Alan W. Stoner, William P. Allen
  • Publication number: 20100260613
    Abstract: A process for reducing secondary reaction zone formation articles includes the steps of non-selective removing an external surface of an as-cast article free of coating to form an as-cast article having a surface substantially free of residual surface stress; and applying a coating material upon the surface substantially free of residual surface stress to form a coated as-cast article having a coating layer disposed upon the surface substantially free of residual surface stress.
    Type: Application
    Filed: December 22, 2006
    Publication date: October 14, 2010
    Inventors: Alan D. Cetel, Shiela R. Woodard, Dwayne A. Braithwaite, Joseph J. Parkos,, JR.
  • Publication number: 20100135846
    Abstract: A first embodiment of a nickel based alloy consists essentially of from 3.0 to 5.2 wt % chromium, from 1.5 to 3.0 wt % molybdenum, from 6.0 to 12.5 wt % tungsten, from 5.0 to 11 wt % tantalum, from 5.5 to 6.5 wt % aluminum, from 11 to 14 wt % cobalt, from 0.001 to 1.75 wt % rhenium, from 0.2 to 0.6 wt % hafnium, up to 0.05 wt % yttrium, up to 3.0 wt % ruthenium, and the balance nickel. Another embodiment of a nickel based alloy consists essentially of from 1.0 to 3.0 wt % chromium, up to 2.5 wt % molybdenum, from 11 to 16 wt % tungsten, from 4.0 to 8.0 tantalum, from 5.7 to 6.5 wt % aluminum, from 11 to 15 wt % cobalt, from 2.0 to 4.0 wt % rhenium, from 0.2 to 0.6 wt % hafnium, up to 0.05 wt % yttrium, up to 3.0 wt % ruthenium, and the balance nickel.
    Type: Application
    Filed: November 30, 2009
    Publication date: June 3, 2010
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Alan D. Cetel, Dilip M. Shah
  • Patent number: 7704332
    Abstract: A single crystal alloy for high AN2 applications has a composition consisting essentially of from 4.0 to 10 wt % chromium, from 1.0 to 2.5 wt % molybdenum, up to 5.0 wt % tungsten, from 3.0 to 8.0 wt % tantalum, from 5.5 to 6.25 wt % aluminum, from 6.0 to 17 wt % cobalt, up to 0.2 wt % hafnium, from 4.0 to 6.0 wt % rhenium, from 1.0 to 3.0 wt % ruthenium, and the balance nickel. Further, these single crystal alloys have a total tungsten and molybdenum content in the range of from 1.0 to 7.5 wt %, preferably from 2.0 to 7.0 wt %, a total refractory element content in the range of from 9.0 to 24.5 wt %, preferably from 13 to 22 wt %, a ratio of rhenium to a total refractory element content in the range of from 0.16 to 0.67, preferably from 0.20 to 0.45, a density in the range of from 0.300 to 0.325 lb/in3, and a specific creep strength in the range from 106×103 to 124×103 inches.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: April 27, 2010
    Assignee: United Technologies Corporation
    Inventors: Venkatarama K. Seetharaman, Alan D. Cetel
  • Publication number: 20100086411
    Abstract: A single crystal alloy for high AN2 applications has a composition consisting essentially of from 4.0 to 10 wt % chromium, from 1.0 to 2.5 wt % molybdenum, up to 5.0 wt % tungsten, from 3.0 to 8.0 wt % tantalum, from 5.5 to 6.25 wt % aluminum, from 6.0 to 17 wt % cobalt, up to 0.2 wt % hafnium, from 4.0 to 6.0 wt % rhenium, from 1.0 to 3.0 wt % ruthenium, and the balance nickel. Further, these single crystal alloys have a total tungsten and molybdenum content in the range of from 1.0 to 7.5 wt %, preferably from 2.0 to 7.0 wt %, a total refractory element content in the range of from 9.0 to 24.5 wt %, preferably from 13 to 22 wt %, a ratio of rhenium to a total refractory element content in the range of from 0.16 to 0.67, preferably from 0.20 to 0.45, a density in the range of from 0.300 to 0.325 lb/in3, and a specific creep strength in the range from 106×103 to 124×103 inches.
    Type: Application
    Filed: December 9, 2009
    Publication date: April 8, 2010
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Venkatarama K. Seetharaman, Alan D. Cetel
  • Publication number: 20100000698
    Abstract: A casting system includes a core and a shell positioned relative to the core. A barrier coating is applied on at least one of the core and the shell.
    Type: Application
    Filed: July 2, 2008
    Publication date: January 7, 2010
    Inventors: Kirk C. Newton, Alan D. Cetel, Mario P. Bochiechio, James T. Beals, John Joseph Marcin
  • Publication number: 20090297359
    Abstract: A high modulus component, such as an aircraft engine turbine blade, is formed from a base metal that has a high modulus crystallographic orientation that is aligned with the primary, i.e. radial, direction of the turbine blade. The base metal is Ni, Fe, Ti, Co, Al, Nb, or Mo based alloy. Alignment of a high modulus direction of the base metal with the primary direction provides enhanced high cycle fatigue life.
    Type: Application
    Filed: August 17, 2007
    Publication date: December 3, 2009
    Inventors: Dilip M. Shah, Alan D. Cetel, Alan W. Stoner, William P. Allen
  • Publication number: 20080170961
    Abstract: A single crystal alloy for high AN2 applications has a composition consisting essentially of from 4.0 to 10 wt % chromium, from 1.0 to 2.5 wt % molybdenum, up to 5.0 wt % tungsten, from 3.0 to 8.0 wt % tantalum, from 5.5 to 6.25 wt % aluminum, from 6.0 to 17 wt % cobalt, up to 0.2 wt % hafnium, from 4.0 to 6.0 wt % rhenium, from 1.0 to 3.0 wt % ruthenium, and the balance nickel. Further, these single crystal alloys have a total tungsten and molybdenum content in the range of from 1.0 to 7.5 wt %, preferably from 2.0 to 7.0 wt %, a total refractory element content in the range of from 9.0 to 24.5 wt %, preferably from 13 to 22 wt %, a ratio of rhenium to a total refractory element content in the range of from 0.16 to 0.67, preferably from 0.20 to 0.45, a density in the range of from 0.300 to 0.325 lb/in3, and a specific creep strength in the range from 106×103 to 124×103 inches.
    Type: Application
    Filed: December 13, 2006
    Publication date: July 17, 2008
    Inventors: Venkatarama K. Seetharaman, Alan D. Cetel
  • Patent number: 7338259
    Abstract: A high modulus component, such as an aircraft engine turbine blade, is formed from a base metal that has a high modulus crystallographic orientation that is aligned with the primary, i.e. radial, direction of the turbine blade. The base metal is Ni, Fe, Ti, Co, Al, Nb, or Mo based alloy. Alignment of a high modulus direction of the base metal with the primary direction provides enhanced high cycle fatigue life.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: March 4, 2008
    Assignee: United Technologies Corporation
    Inventors: Dilip M. Shah, Alan D. Cetel, Alan W. Stoner, William P. Allen
  • Patent number: 6805750
    Abstract: A method of surface cleaning and controlled oxidation of superalloys is described. The method provides a thin homogeneous layer of relatively pure alpha alumina which is suited to receive and adhere to a subsequent vapor deposited coating.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: October 19, 2004
    Assignee: United Technologies Corporation
    Inventors: Raymond P. Ristau, Sudhangshu Bose, Alan D. Cetel
  • Publication number: 20040200549
    Abstract: Corrosion and oxidation resistant, high strength, directionally solidified superalloy alloys and articles are described. The articles have a nominal composition in weight percent of about 12.1% Cr, 9% Co, 1.9% Mo, 3.8% W, 5% Ta, 3.6% Al, 4.1% Ti, 0.013% B, 0.1 % C, up to about 0.01 Zr, balance essentially nickel. The resultant articles have good hot corrosion resistance, oxidation resistance and creep properties. The articles are preferably cast as equiaxed articles such as gas turbine engine components.
    Type: Application
    Filed: December 10, 2002
    Publication date: October 14, 2004
    Inventors: Alan D. Cetel, Dilip M. Shah
  • Patent number: 6725540
    Abstract: The present invention relates to a method for repairing turbine engine components, such as vanes and blades, which have airfoils. The method broadly comprises removing oxidation debris from portions of the component by blending areas exhibiting thermal barrier coating spall and/or oxidation damage, removing a ceramic insulating layer from the component, and blending surfaces of the component where nicks, dents, and/or cracks are located. If the component has a depleted aluminum zone, the depleted zone is either removed or replenished. Further, a tip portion of the component, if damaged, is restored and tip abrasives are applied to restore the component's cutting ability. Thereafter, a ceramic coating is applied to the component.
    Type: Grant
    Filed: March 9, 2002
    Date of Patent: April 27, 2004
    Assignee: United Technologies Corporation
    Inventors: Sudhangshu Bose, Alan D. Cetel, Peter J. Draghi, Norman Pietruska
  • Publication number: 20030167636
    Abstract: The present invention relates to a method for repairing turbine engine components, such as vanes and blades, which have airfoils. The method broadly comprises removing oxidation debris from portions of the component by blending areas exhibiting thermal barrier coating spall and/or oxidation damage, removing a ceramic insulating layer from the component, and blending surfaces of the component where nicks, dents, and/or cracks are located. If the component has a depleted aluminum zone, the depleted zone is either removed or replenished. Further, a tip portion of the component, if damaged, is restored and tip abrasives are applied to restore the component's cutting ability. Thereafter, a ceramic coating is applied to the component.
    Type: Application
    Filed: March 9, 2002
    Publication date: September 11, 2003
    Inventors: Sudhangshu Bose, Alan D. Cetel, Peter J. Draghi, Norman Pietruska
  • Publication number: 20030111138
    Abstract: Corrosion and oxidation resistant, high strength, directionally solidified superalloy alloys and articles are described. The articles have a nominal composition in weight percent of about 12% Cr, 9% Co, 1.9% Mo, 3.8% W, 5% Ta, 3.6% Al, 4.1% Ti, 0.015% B, 0.1% C, up to about 0.02 Zr, balance essentially nickel, and include no intentional additions of hafnium or zirconium, and also have a small amounts of tantalum carbide. The resultant articles have good hot corrosion resistance and superior oxidation resistance and creep properties. The articles are preferably columnar grain, but may also be single crystal.
    Type: Application
    Filed: December 18, 2001
    Publication date: June 19, 2003
    Inventor: Alan D. Cetel
  • Patent number: 6355117
    Abstract: Compositional requirements and processing improvements are disclosed which improve the hydrogen embrittlement resistance and the fatigue resistance in air of nickel base single crystal articles. The compositional requirements enlarge the difference between the &ggr;′ solvus temperature and the incipient melting temperature, thus enabling the solution of &ggr;/&ggr;′ eutectic islands without causing incipient melting, while hot isostatic pressing and careful melt practice eliminate porosity and carbides, borides and nitrides, all of which act as crack initiation sites.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: March 12, 2002
    Assignee: United Technologies Corporation
    Inventors: Daniel P. DeLuca, Bradford A. Cowles, Maurice L. Gell, David N. Duhl, Alan D. Cetel, Charles M. Biondo
  • Patent number: 6054096
    Abstract: Improved compositions for fabricating nickel superalloy single crystal articles are described. The compositions are characterized by the substantial absence of carbon, boron, zirconium and vanadium and intentional additions of cobalt. The cobalt additions increase the stability of the compositions and provide enhanced heat treatability. Single crystal articles of these compositions have utility as gas turbine engine components.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: April 25, 2000
    Assignee: United Technologies Corporation
    Inventors: David N. Duhl, Alan D. Cetel
  • Patent number: 6007645
    Abstract: A superalloy composition and single crystal articles of the composition are disclosed. The broad range, in weight percent, is 3.0-20.0% Co, 5.0-10.0% W, 5.0-7.0% Al, 0.4-2.9% Cr, 4.0-8.0% Ta, 0-1.0% V, 0-8.5% Re, 0-1.5% Ti, 0-3.0% Hf, 0-4.0% Mo, 0-2.0% Nb, 0-10.0% of one or more elements selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt, 0-1.0 of one or more elements selected from the group consisting of Y, La, Sc, Ce, lanthanides or actinides series of elements, balance essentially Ni. An equation is presented to select the most useful specific compositions from within this range.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: December 28, 1999
    Assignee: United Technologies Corporation
    Inventors: Alan D. Cetel, David N. Duhl