Brazing Or Soldering Patents (Class 228/262.31)
  • Patent number: 10390850
    Abstract: A clot retrieval device may include an elongate member and an expandable clot engaging element configured to extend across the clot in its expanded state. The expandable clot engaging element may include a first monolithic structure and a second monolithic structure. The first monolithic structure may encircle the second monolithic structure over at least a portion of its length. The second monolithic structure may include a proximal section, an intermediate section, and a distal section. The distal section may include an expansion.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: August 27, 2019
    Assignee: Neuravi Limited
    Inventors: David Vale, Eamon Brady, Michael Gilvarry, Mahmood Razavi, Kevin McArdle, David Hardiman, Brendan Casey
  • Patent number: 10098229
    Abstract: To provide a compact module that is capable of achieving a low profile and that has excellent high-frequency characteristics, a module includes a parent board; first and second child boards arranged so as to face the parent board; multiple electronic components that include first electrodes and second electrodes electrically connected to the first electrodes, respectively, on both opposing faces, the first electrodes being connected to the first child board, the second electrodes being connected to the parent board; and multiple electronic components that include first electrodes and second electrodes electrically connected to the first electrodes, respectively, on both opposing faces, the first electrodes being connected to the second child board, the second electrodes being connected to the parent board.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: October 9, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yoichi Takagi, Tadashi Nomura, Masato Yoshida, Nobuaki Ogawa, Mitsuhiro Matsumoto
  • Patent number: 10076811
    Abstract: Boron and silicon free braze alloys useful for structural repairs of superalloy gas turbine engine components. The braze alloy composition may contain only elements that are contained in the superalloy material to be repaired, and may have melting temperature ranges as low as 10° C. to facilitate producing a high strength homogenized braze joint during a solution heat treatment of the superalloy substrate material.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: September 18, 2018
    Assignee: SIEMENS ENERGY, INC.
    Inventor: Kazim Ozbaysal
  • Patent number: 9765416
    Abstract: A method of melting and refining an alloy comprises vacuum induction melting starting materials to provide a vacuum induction melted alloy. At least a portion of the vacuum induction melted alloy is electroslag remelted to provide an electroslag remelted alloy. At least a portion of the vacuum arc remelted alloy is vacuum arc remelted to provide a singly vacuum arc remelted alloy. At least a portion of the singly vacuum arc remelted alloy is vacuum arc remelted to provide a doubly vacuum arc remelted alloy. In various embodiments, a composition of the vacuum induction melted alloy comprises primarily one of vanadium, chromium, manganese, iron, cobalt, nickel, copper, niobium, molybdenum, technetium, ruthenium, rhodium, palladium, silver, tantalum, tungsten, rhenium, osmium, iridium, platinum, and gold.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: September 19, 2017
    Assignee: ATI Properties LLC
    Inventors: Anthony V. Banik, Henry E. Lippard, Brandon C. Wilson
  • Patent number: 9035459
    Abstract: Interconnect structures and methods of fabricating the same are provided. The interconnect structures provide highly reliable copper interconnect structures for improving current carrying capabilities (e.g., current spreading). The structure includes an under bump metallurgy formed in a trench. The under bump metallurgy includes at least: an adhesion layer; a plated barrier layer; and a plated conductive metal layer provided between the adhesion layer and the plated barrier layer. The structure further includes a solder bump formed on the under bump metallurgy.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: May 19, 2015
    Assignee: International Business Machines Corporation
    Inventors: Charles L. Arvin, Raschid J. Bezama, Harry D. Cox, Timothy H. Daubenspeck, Krystyna W. Semkow, Timothy D. Sullivan
  • Patent number: 8918995
    Abstract: A method of repairing a damaged notch fillet radius of a turbine blade shroud includes a replacement notch fillet radius and a hardface nugget. The damaged notch fillet radius is blended out and a hardface structure positioned proximate the damaged notch fillet radius is removed. A replacement notch fillet radius is formed with weld filler and the hardface nugget is welded to at least a portion of the replacement notch fillet radius.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: December 30, 2014
    Assignee: United Technologies Corporation
    Inventor: Timothy A. Milleville
  • Patent number: 8895891
    Abstract: Vascular treatment and methods include a plurality of self-expanding bulbs and a hypotube including interspersed patterns of longitudinally spaced rows of kerfs. Joints between woven structures and hypotubes include solder. Woven structures include patterns of radiopaque filaments measurable under x-ray. Structures are heat treated to include at least shapes at different temperatures. A catheter includes a hypotube including interspersed patterns of longitudinally spaced rows of kerfs. Heat treating systems include a detachable flange. Laser cutting systems include a fluid flow system.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: November 25, 2014
    Assignee: Insera Therapeutics, Inc.
    Inventors: Vallabh Janardhan, Vikram Janardhan
  • Patent number: 8789452
    Abstract: Vascular treatment and methods include a plurality of self-expanding bulbs and a hypotube including interspersed patterns of longitudinally spaced rows of kerfs. Joints between woven structures and hypotubes include solder. Woven structures include patterns of radiopaque filaments measurable under x-ray. Structures are heat treated to include at least shapes at different temperatures. A catheter includes a hypotube including interspersed patterns of longitudinally spaced rows of kerfs. Heat treating systems include a detachable flange. Laser cutting systems include a fluid flow system.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: July 29, 2014
    Assignee: Insera Therapeutics, Inc.
    Inventors: Vallabh Janardhan, Vikram Janardhan
  • Patent number: 8783151
    Abstract: Vascular treatment and methods include a plurality of self-expanding bulbs and a hypotube including interspersed patterns of longitudinally spaced rows of kerfs. Joints between woven structures and hypotubes include solder. Woven structures include patterns of radiopaque filaments measureable under x-ray. Structures are heat treated to include at least shapes at different temperatures. A catheter includes a hypotube including interspersed patterns of longitudinally spaced rows of kerfs. Heat treating systems include a detachable flange. Laser cutting systems include a fluid flow system.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: July 22, 2014
    Assignee: Insera Therapeutics, Inc.
    Inventors: Vallabh Janardhan, Vikram Janardhan
  • Publication number: 20140093365
    Abstract: A process of fabricating a shield, a process of preparing a component, and an erosion shield are disclosed. The process of fabricating the shield includes forming a near-net shape shield. The near-net shape shield includes a nickel-based layer and an erosion-resistant alloy layer. The nickel-based layer is configured to facilitate secure attachment of the near-net shaped to a component. The process of preparing the component includes securing a near-net shape shield to a substrate of a component.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Theodore William FANDREI, II
  • Patent number: 8563142
    Abstract: A dual brazing alloy element for a materially integral connection of a ceramic surface to a metallic surface includes a first layer having a Ni-based brazing alloy with a Ni content of at least 50% by weight and having at least one component configured to lower a melting point of the Ni-based brazing alloy selected from the group consisting of Si, B, Mn, Sn and Ge. A second layer includes an active brazing alloy material having a total content of 1-15% by weight of at least one active element selected from the group consisting of Ti, Hf, Zr and V.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: October 22, 2013
    Assignee: Alstom Technology Ltd
    Inventors: Hans-Peter Bossmann, Alexander Schnell
  • Patent number: 8393528
    Abstract: A method for hardfacing a metal component surface (14, 16), especially a shroud surface of a turbine blade made of a TiAl alloy, with at least one metal material (18, 20), in particular a Co—Cr alloy. The hardfacing coating is produced separately from the component surface and is then joined to the component surface in a high-temperature soldering process. A turbine blade including such a hardfacing coating, primarily in a shroud region (2).
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: March 12, 2013
    Assignee: MTU Aero Engines GmbH
    Inventors: Karl-Hermann Richter, Ulrich Knott, Piotr Kowalczyk
  • Patent number: 8353444
    Abstract: The present invention is directed to a process for repairing cracks in a turbine engine component. The process comprises the steps of providing a component, preferably formed from a single crystal nickel based material, with at least one crack, applying a repair alloy composition containing a single crystal nickel based alloy, a first nickel based braze alloy and a second nickel based braze alloy to the crack(s), and subjecting the component with the applied repair alloy composition to a thermal cycle to diffuse the repair alloy composition into the crack(s).
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: January 15, 2013
    Assignee: United Technologies Corporation
    Inventors: Norman Pietruska, Beth Kwiatkowski Abriles, John F. Falkowski
  • Patent number: 8350176
    Abstract: A method of providing boiler tubes with a variably ribbed interior surface. A suitably dimensioned spindle with a channel having a desired pattern on the exterior surface of the spindle is wrapped by a wire-like member in the channel so as to form thereon a reverse image of the desired, patterned tube ribbing. A brazing metal paste is applied on the exterior surface of the wire-like member and the spindle is inserted into a tube to be ribbed. The wire-like member is released from the spindle to allow the wire-like member to conform to the inner surface of the tube, and the tube is heated to the melting temperature of the brazing metal paste so that the wire-like member bonds to the inner surface of the tube, and the metal tube is then cooled.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: January 8, 2013
    Assignee: Babcock & Wilcox Power Generation Group, Inc.
    Inventors: Walter R. Mohn, George B. Watson, John Hainsworth, James M. Tanzosh, Douglas D. Zeigler
  • Patent number: 8324522
    Abstract: Provided is an apparatus for performing a reflow process of a solder ball provided to a semiconductor chip. The reflow apparatus may include a coil, a support member and a moving member. The coil may receive a current from a power supply to heat the solder ball using an induced heating method. The support member may be disposed on the front or the rear of the coil and may support a printed circuit board on which a semiconductor chip is mounted. The moving member may move the printed circuit board so that the printed circuit object passes through an internal space surrounded by the coil.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: December 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Minill Kim, Kwang Yong Lee, Jonggi Lee, Ji-Seok Hong
  • Patent number: 8042726
    Abstract: To form high performance bonding connections suitable for producing micro-structured components made of a plurality of individual layers, bonding by the steps; providing at least two work pieces; forming a metal bonding layer on at least one side of at least one of said at least two work pieces by chemical or electrolytic metal plating method; the metal bonding layer being a nickel/phosphorous alloy having a prescribed phosphorous content and prescribed thickness; forming a bonding arrangement comprising said work pieces so that there is at least one metal bonding layer between said at least two respective work pieces; heating at a prescribed heating rate to a temperature above the melting temperature of the bonding layer; bonding the two work pieces by applying contact pressure within a prescribed range; and cooling at a prescribed rate.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: October 25, 2011
    Assignee: Atotech Deutschland GmbH
    Inventors: Ralph Herber, Olaf Kurtz, Johannes Etzkorn, Christian Madry, Carsten Schwiekendick, Gerd Schafer
  • Patent number: 7984841
    Abstract: A member having a coating film capable of suppressing whisker generation is provided. The coating film (3) including a plurality of crystalline grains (3a) made of tin or tin alloy is formed above the surface of the base member (1). An intermetallic compound (3b) of tin and the first metal is being formed along the crystalline grain boundaries of the coating film.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: July 26, 2011
    Assignee: Fujitsu Limited
    Inventor: Seiki Sakuyama
  • Publication number: 20110101619
    Abstract: A MCrAlY alloy, methods to produce a MCrAlY layer and a honeycomb seal are provided. The MCrAlY alloy includes chromium, aluminum, yttrium and iron and optionally titanium, hafnium or silicon. The honeycomb seal includes a substrate, honeycomb cells and a protective coating on side walls of the honeycomb cells or a diffusion area inside side walls of the honeycomb cells, the protective coating or the diffusion area including the MCrAlY alloy.
    Type: Application
    Filed: January 23, 2009
    Publication date: May 5, 2011
    Inventors: David Fairbourn, Paul Mathew Walker
  • Patent number: 7934315
    Abstract: A method of repairing a damaged notch fillet radius of a turbine blade shroud includes a replacement notch fillet radius and a hardface nugget. The damaged notch fillet radius is blended out and a hardface structure positioned proximate the damaged notch fillet radius is removed. A replacement notch fillet radius is formed with weld filler and the hardface nugget is welded to at least a portion of the replacement notch fillet radius.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: May 3, 2011
    Assignee: United Technologies Corporation
    Inventor: Timothy A. Milleville
  • Patent number: 7869574
    Abstract: A bonded assembly includes a member, and a substrate comprising beryllium, the substrate configured to be bonded to the member. The bonded assembly includes a first barrier applied to a surface of the substrate, a second barrier applied to a surface of the first barrier, a bonding material disposed between the second barrier and the member, and wherein the second barrier is configured to prevent dissolution of the first barrier into the bonding material.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: January 11, 2011
    Assignee: General Electric Company
    Inventors: Gregory Alan Steinlage, Thomas C. Tiearney, Donald Robert Allen
  • Patent number: 7749614
    Abstract: The invention relates to a method of brazing a Ti—Al alloy. According to the invention, a layer of nickel (2) is disposed between a part (1) which is made from titanium aluminide and a brazing sheet (3), such as to enable: the aforementioned part (1) to be brazed to another metallic material (4) without the aluminium diffusing from one to the other; and a stable link with good mechanical strength to be produced. The invention can be used for the assembly of aircraft engine parts which are made from titanium aluminide and nickel-based superalloy.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: July 6, 2010
    Assignee: ONERA (Office National d'Etudes et de Recherches Aerospatiales)
    Inventors: Carine Hoffmann, Marie-Pierre Bacos, Pierre Josso, Serge Naveos
  • Patent number: 7751924
    Abstract: An apparatus for placing solder bumps on a mold plate includes: a solder fill head configured for dispensing molten solder onto the mold plate, the solder fill head also configured for relative movement over the mold plate; and a control mechanism configured for controlling positions of the solder fill head relative to the mold plate.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: July 6, 2010
    Assignee: International Business Machines Corporation
    Inventors: Timothy J Chainer, Peter A Gruber, Dennis G Manzer
  • Patent number: 7708184
    Abstract: A gas turbine engine includes alternating rows of rotary airfoils or blades and static airfoils or vanes. The vanes are made of a base metal, such as cobalt or nickel superalloy. If a crack forms in one of the vanes, a braze alloy is applied to the crack. The braze alloy is a powdered slurry. The braze alloy includes approximately 50 to 100% of a base material and approximately 0 to 50% of a braze material. The base material of the braze alloy has the same composition as the composition of the base metal of the vane. The airfoil is then exposed to microwaves which melt the braze alloy in preference to the base metal to repair the crack in the vane.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: May 4, 2010
    Assignee: United Technologies Corporation
    Inventor: Balaji Rao Garimella
  • Patent number: 7442445
    Abstract: A brazing clad material is a composite material that comprises a base material and a brazing material layer formed integrally on the base material. The brazing material layer has a Ni or Ni alloy layer, a Ti or Ti alloy layer and a Fe—Ni alloy layer that are sequentially stacked in this order on the base material. The brazing material layer has a Fe concentration of 25 to 40 wt % in the entire brazing material layer. The brazing material layer satisfies a ratio of W1/W2 to be 0.56 to 0.66, where W1 is a weight of Ni contained in the entire brazing material layer and W2 is a total weight of Ni and Ti contained in the entire brazing material layer.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: October 28, 2008
    Assignee: Hitachi Cable, Ltd.
    Inventors: Hideyuki Sagawa, Hiromitsu Kuroda, Kazuma Kuroki, Humio Horii, Tetsuya Tokumitu, Nobuhito Sakuyama, Shigeru Okamoto
  • Patent number: 7294411
    Abstract: The invention relates to a brazing sheet product comprising a core sheet, a clad layer on said core sheet made of an aluminum alloy containing silicon in an amount in the range of 4 to 14% by weight, an optional layer comprising nickel on the outersurface of said clad layer, and a diffusion layer comprising nickel-tin alloy on the outer surface of said nickel layer. The invention further relates to a method of manufacturing such a brazing product comprising the process step of plating different metal layers and subjecting the plated brazing product to an annealing treatment by holding the plated brazing product at a temperature in the range of 100 to 500° C. for a period of 1 sec. to 300 minutes to form a diffusion layer comprising nickel-tin alloy on the outer surface of said layer comprising nickel.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: November 13, 2007
    Assignee: Aleris Aluminum Koblenz GmbH
    Inventors: Jacques Hubert Olga Joseph Wijenberg, Adrianus Jacobus Witterbrood, Joop Nicolaas Mooij
  • Patent number: 7261784
    Abstract: The method of the invention enables a coating to be made on at least one face to be protected of a metal substrate and/or article in order to improve its performance in terms of resistance to wear by friction, in particular at high temperature. The method comprises the following steps: providing a flexible sheet derived from at least one plate obtained by the technique of casting a strip by silkscreen printing from a viscous material made of a binder and a metal powder of a superalloy; cutting said flexible sheet to the dimensions of said face to be protected of a metal substrate and/or article in order to constitute a preform; placing said preform on said face to be protected of a metal substrate and/or article; and raising the assembly to a temperature enabling a coating to be formed by establishing a bond between said preform and said face to be protected.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: August 28, 2007
    Assignee: Snecma Moteurs
    Inventor: Claude Mons
  • Patent number: 6968991
    Abstract: A diffusion bond mixture paint and method for repairing a single-crystal superalloy article that minimizes the amount of braze alloy applied to the article. The amount of boron and eutectic brittle borides of the wide gap brazing processes is minimized, resulting in a more robust repair. The braze paint includes an alloy powder mixture, a binder, and a carrier to thin the paint.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: November 29, 2005
    Assignee: Honeywell International, Inc.
    Inventors: Federico Renteria, William F Hehmann
  • Patent number: 6885104
    Abstract: Electronic packages with uninsulated portions of copper circuits protected with coating layers having thicknesses that are suitable for soldering without fluxing and are sufficiently frangible when being joined to another metal surface to obtain metal-to-metal contact between the surfaces.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: April 26, 2005
    Assignee: Kulicke & Soffa Investments, Inc.
    Inventors: Timothy W. Ellis, Nikhil Murdeshwar, Mark A. Eshelman, Christian Rheault
  • Patent number: 6863995
    Abstract: A method for using a novel ternary nickel-gold-phosphorus brazing alloy for joining nickel-based components together and the assembly so formed.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: March 8, 2005
    Assignee: Praxair S.T. Technology, Inc.
    Inventor: Thomas A. Sandin
  • Patent number: 6852428
    Abstract: Objects of the present invention are to provide a laminated heat resistant alloy plate has a large area, and to provide a manufacturing method therefor. The laminated heat resistant alloy plate according to the present invention is obtained by brazing a Ni alloy plate having plural striae formed thereon at a predetermined interval and a plate which is made of a material the same as or different from that of the Ni alloy plate with a sheet of Ni solder which is amorphous and does not contain organic binder.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: February 8, 2005
    Assignees: Mitsubishi Heavy Industries, Ltd., Kinzoku Giken Co., Ltd.
    Inventors: Norihide Hirota, Yusaku Sugimoto, Kazuhiko Hasegawa
  • Publication number: 20040222090
    Abstract: The invention includes a method of forming an assembly of a physical vapor deposition target and support. A physical vapor deposition target is provided. The physical vapor deposition target has a coefficient of thermal expansion of less than 10×10−6K−1. The physical vapor deposition target is joined to a support. The support comprises a thermal coefficient of expansion of less than 11×10−6K−1. The invention also includes an assembly comprising a physical vapor deposition target and a support joined to the physical vapor deposition target. The support comprises carbon fibers and copper.
    Type: Application
    Filed: May 7, 2003
    Publication date: November 11, 2004
    Inventors: Tim Scott, Jianxing Li
  • Patent number: 6720086
    Abstract: A liquid interface diffusion bonded composition comprises a metal honeycomb core such as a nickel-alloy honeycomb core and a nickel-alloy facing sheet bonded thereto. The composition and method of this invention are useful in applications where high strength, heat resistant materials are required, such as in aircraft and aerospace-related structures.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: April 13, 2004
    Assignee: Rohr, Inc.
    Inventor: Andrew J. Strutt
  • Publication number: 20030186076
    Abstract: Objects of the present invention are to provide a laminated heat resistant alloy plate has a large area, and to provide a manufacturing method therefor. The laminated heat resistant alloy plate according to the present invention is obtained by brazing a Ni alloy plate having plural striae formed thereon at a predetermined interval and a plate which is made of a material the same as or different from that of the Ni alloy plate with a sheet of Ni solder which is amorphous and does not contain organic binder.
    Type: Application
    Filed: February 6, 2003
    Publication date: October 2, 2003
    Inventors: Norihide Hirota, Yusaku Sugimoto, Kazuhiko Hasegawa
  • Patent number: 6602777
    Abstract: The present invention relates to a method for controlling the formation of the intermetallic compounds in solder joints, The types of the intermetallic compounds between the SnAgCu solders and the Ni-bearing substrate can be controlled by adjusting the copper concentration in the SnAgCu solders. If the SnAgCu solder has a copper concentration higher than or equivalent to 0.6 wt. %, the soldering intermetallic compound includes a continuous (Cu1−xNix)6Sn5 layer. If the copper concentration of the SnAgCu solders is lower than or equivalent to 0.4 wt. %, the soldering intermetallic compound includes a continuous (Ni1−yCuy)3Sn4 layer and a non-continuous (Cu1−xNix)6Sn5 layer. If the copper concentration of the SnAgCu solders is between 0.4 wt. % to 0.6 wt. %, the soldering intermetallic compound includes the continuous (Cu1−xNix)6Sn5.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: August 5, 2003
    Assignee: National Central University
    Inventors: Cheng-Heng Kao, Cheng-En Ho
  • Patent number: 6541075
    Abstract: An article includes a substrate and an adhesion layer overlying the substrate. The adhesion layer includes a first phase including particles, and a second phase including braze alloy that bonds the particles to the substrate. The article further includes a ceramic layer overlying the adhesion layer. In one embodiment, the ceramic layer is a thermal barrier coating (TBC), formed of stabilized zirconia (ZrO2).
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: April 1, 2003
    Assignee: General Electric Company
    Inventors: Wayne Charles Hasz, Jeffrey Allen Conner
  • Publication number: 20020185524
    Abstract: An article, such as an airfoil having a melting temperature of at least about 1500° C. and comprising a first piece and a second piece joined by a braze to the first piece. The first piece comprises one of a first niobium-based refractory metal intermetallic composite and a first molybdenum-based refractory metal intermetallic composite, and the second piece comprises one of a second niobium-based refractory metal intermetallic composite and a second molybdenum-based refractory metal intermetallic composite. The braze joining the first piece to the second piece comprises a first metallic element and a second metallic element, wherein the first metallic element is one of titanium, palladium, zirconium, niobium, and hafnium, and wherein the second metallic element is one of titanium, palladium, zirconium, niobium, hafnium, aluminum, chromium, vanadium, platinum, gold, iron, nickel, and cobalt, the first metallic element being different from the second metallic element.
    Type: Application
    Filed: May 30, 2001
    Publication date: December 12, 2002
    Applicant: Gerneral Electric Company with cover sheet
    Inventors: Ji-Cheng Zhao, Melvin Robert Jackson, Bernard Patrick Bewlay
  • Patent number: 6454885
    Abstract: A braze alloy powder mixture that includes a low-melt powder composition and a high-melt powder composition. The low-melt powder composition is made of one or more low-melt powders and includes 50-70% Ni, 8-20% Cr, 8-15% Ta, 4-10% Co, 2-7% Al, and up to 2.25% B. The high-melt powder composition is made of one or more high-melt powders and includes 50-70% Ni, 2-10% Cr, 2-10% Ta, 5-15% Co, 2-10% Al, 2-10% W, and up to about 3% each of Re, Mo and Hf. Up to about 1% Ti, W, Mo, Re, Nb, Hf, Pd, Pt, Ir, Ru, C, Si, and/or Zr may be included in the low-melt powder, while the high-melt powder may include up to about 1% each of Ti, Nb, C, B, Si, and Zr.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: September 24, 2002
    Assignee: Rolls-Royce Corporation
    Inventors: Richard Patrick Chesnes, Raymond Ruiwen Xu
  • Patent number: 6200690
    Abstract: A nickel-chromium-based brazing alloy has a composition consisting essentially of about 9.5 to about 16.5 atom percent chromium, 0 to about 5 atom percent iron, about 10 to about 15 atom percent silicon, about 6 to less than 7 atom percent boron, and 0 to about 5 atom percent molybdenum, the balance being essentially nickel and incidental impurities. The alloy is especially suited for use as a brazing filler metal for joining stainless steel and/or superalloy at temperatures above 1100 degree(s) C. Such a filler metal has a thickness ranging from about 65 to 100 micrometers and a width ranging from 100 to 250 millimeters and more. Honeycomb structures and thin corrugated fin/plate structures particularly suited for use in manufacture of plate-type heat exchangers formed at least in part from stainless steels and/or superalloys are brazed using a unique process. The process is characterized by a long holding time at brazing temperature, and combines brazing and diffusion annealing in one technological step.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: March 13, 2001
    Assignee: AlliedSignal Inc.
    Inventor: Anatol Rabinkin
  • Patent number: 6195864
    Abstract: An improved cobalt-base braze alloy composition and method for diffusion brazing are provided for use in repairing superalloy articles, such as gas turbine engines, power generation turbines, refinery equipment, and heat exchangers. The improved cobalt-base braze alloy composition includes nickel; at least one element selected from the group of rhenium, palladium, platinum, ruthenium, and iridium; at least one element selected from the group of boron and silicon; and the remaining balance consists of cobalt. This composition may also include aluminum and/or one or more rare earth/lanthanide series elements, and the composition may be combined with one or more powdered base metal superalloy compositions to form an improved diffusion braze alloy mixture. In the improved method for repairing superalloy articles, the foregoing mixture is applied to a region of the superalloy article to be repaired.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: March 6, 2001
    Assignee: Allison Engine Company, Inc.
    Inventor: Richard Patrick Chesnes