With Noncarburizing Or Non-nitriding Reactive Coating (e.g., Oxidizing, Siliconizing, Boronizing, Etc.) Patents (Class 148/217)
  • Patent number: 10538835
    Abstract: Provided herein are variably flexible (i.e., variably stiff) metal alloys and methods of making the variably flexible (i.e., variably stiff) metal alloys. A variably flexible (i.e., variably stiff) metal alloy is a metal alloy that has areas of differing flexibility (i.e., stiffness, rigidity or elasticity) along a length of the metal alloy when the metal alloy is subjected to a load in use. Also provided herein are methods of making variably flexible (i.e., variably stiff) metal alloys and products including casting a metal alloy and selectively heat treating portions of the metal alloy to achieve predetermined stiffnesses in those portions.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: January 21, 2020
    Assignee: Adallo LLC
    Inventors: Ji Ma, Ibrahim Karaman, Eric Flickinger
  • Patent number: 10519532
    Abstract: A steel material of the disclosure has a chemical composition containing, in mass %: 0.03% to 0.3% C; 0.03% to 1.0% Si; 0.1% to 2.0% Mn; 0.003% to 0.03% P; 0.005% or less S; 0.005% to 0.1% Al; 0.005% to 0.5% Cu; 0.01% to 0.5% Sb; and 0.005% to 0.5% Ni, with a balance being Fe and incidental impurities. Thus, the steel material has excellent alcohol-induced pitting corrosion resistance and alcohol-induced SCC resistance, and can be used for large structures with no need for coating, inhibitor addition, or the like by improving the pitting corrosion resistance and SCC resistance of the steel material itself.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: December 31, 2019
    Assignee: JFE STEEL CORPORATION
    Inventors: Itaru Samusawa, Kazuhiko Shiotani
  • Patent number: 10436268
    Abstract: A method of manufacturing a brake disk made of gray cast iron is disclosed. The method includes casting a disk body using gray cast iron containing 3.1 wt % to 3.7 wt % of C; machining a surface of the cast disk body; nitriding the disk body by exposing the machined surface to a temperature in the range of 540° C. to 580° C. for 50 min to 70 min, and coating the nitrided disk body.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: October 8, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Min Gyun Chung, Yoon Cheol Kim, Yoon Joo Rhee, Byung Chan Lee, Jae Young Lee
  • Patent number: 10274031
    Abstract: A method of manufacturing a brake disk made of gray cast iron is disclosed. The method includes casting a disk body using gray cast iron containing 3.1 wt % to 3.7 wt % of C; machining a surface of the cast disk body; nitriding the disk body by exposing the machined surface to a temperature in the range of 540° C. to 580° C. for 50 min to 70 min, and coating the nitrided disk body.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: April 30, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA Motors Corporation
    Inventors: Min Gyun Chung, Yoon Cheol Kim, Yoon Joo Rhee, Byung Chan Lee, Jae Young Lee
  • Patent number: 10167858
    Abstract: Disclosed herein is a double-headed swash type compressor, and a distance between an outer peripheral surface of a shaft (20) and an inner peripheral surface of a shaft bore (11) is greater than a distance between the outer peripheral surface of the shaft (20) and an inner peripheral surface of a journal bearing (30).
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: January 1, 2019
    Assignee: HANON SYSTEMS
    Inventors: Min Gyu Kim, Seung Yong Hwang, Sang Ho Kim, Duck Bin Yoon
  • Patent number: 10047429
    Abstract: Provided is a gas nitrocarburizing method forming a nitride layer in a surface layer portion of a workpiece made of steel by heating the workpiece within a heat treatment furnace into which a heat treatment gas is introduced, the heat treatment gas containing ammonia gas and at least one of carbon dioxide gas and hydrogen gas, and having a remainder formed of an impurity.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: August 14, 2018
    Assignee: NTN CORPORATION
    Inventor: Chikara Ohki
  • Patent number: 9541144
    Abstract: A vehicular disc brake rotor is provided with a cast-iron base, a nitrogen diffusion layer formed on the cast-iron base, a nitrogen compound layer formed on the nitrogen diffusion layer, and an iron oxide layer including Fe3O4 and formed on the nitrogen compound layer. In a burnish and a first re-burnish of a “Passenger car-Braking device-Dynamometer test procedures” (which is based on JASO C 406:2000), a change ratio of a frictional coefficient between the burnish and the first re-burnish is 10% or less.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: January 10, 2017
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Yoshiyuki Sugai, Katsuji Seki, Takuya Takada
  • Patent number: 9127342
    Abstract: Disclosed herein is a high-strength transmission gear, manufactured by gas-nitriding a nitriding steel having a composition including iron (Fe) as a main component, 0.25˜0.40 wt % of carbon (C), 0.50˜1.0 wt % of manganese (Mn), 2.0˜3.0 wt % of chromium (Cr), 0.3˜1.0 wt % of molybdenum (Mo), 0.2˜0.7 wt % of copper (Cu), 0.03˜0.1 wt % of niobium (Nb), 0.03˜0.1 wt % of aluminum (Al), 0.05˜0.15 wt % of vanadium (V), 0.001˜0.005 wt % of boron (B) and other inevitable impurities. More specifically, while gas-nitriding of the nitriding steel, the temperature is increased in steps, and the ratio of nitrogen gas in the nitriding steel is decreased in steps.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: September 8, 2015
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jae Hong Park, Bong Lae Jo
  • Patent number: 8986465
    Abstract: A piston ring comprising upper face, a lower face, an inner perimeter wall, and an outer perimeter wall that extends around the piston ring from the upper face to the lower face, where the outer perimeter wall has upper corner region disposed adjacent the upper face, a lower corner region disposed adjacent the lower face, and a band of a nitrided conversion layer extending between the upper corner region and the lower corner region, and where a PVD nitride layer is disposed on the upper corner region and on the lower corner region.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: March 24, 2015
    Assignee: Mahle Industries Inc.
    Inventor: John C. Lahrman
  • Publication number: 20150054222
    Abstract: A coated piston ring having a base body of chromium steel with more than 10 wt.-% chromium and having an inner circumferential surface, a first flank surface, a second flank surface and an outer circumferential surface. The first flank surface comprises a nitride diffusion layer with a layer thickness of from 5-300 ?m, a nitride connecting layer with a layer thickness of from 0.5-15 ?m on the nitride diffusion layer, and an oxide layer with a layer thickness of from 0.05-3 ?m on the nitride connecting layer. The second flank surface comprises the nitride diffusion layer, and the outer circumferential surface comprises the nitride diffusion layer and a chromium solid particle layer with 0.1-30 vol.-% solid particles, relative to the total volume of the chromium solid particle layer on the nitride diffusion layer.
    Type: Application
    Filed: December 7, 2012
    Publication date: February 26, 2015
    Inventors: Christian Herbst-Dederichs, Waldemar Urbatzka, Stefan Dürdoth, Peter-Klaus Esser
  • Patent number: 8951402
    Abstract: A method of ultra-fast boriding of a metal surface. The method includes the step of providing a metal component, providing a molten electrolyte having boron components therein, providing an electrochemical boriding system including an induction furnace, operating the induction furnace to establish a high temperature for the molten electrolyte, and boriding the metal surface to achieve a boride layer on the metal surface.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: February 10, 2015
    Assignee: UChicago Argonne, LLC
    Inventors: Servet Timur, Guldem Kartal, Osman L. Eryilmaz, Ali Erdemir
  • Patent number: 8900377
    Abstract: Use of a boron holding grease or fluid or oil for the purpose of increasing acid resistance and/or corrosion resistance in at least one metallic component of a flexible pipe body.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: December 2, 2014
    Assignee: GE Oil & Gas UK Limited
    Inventor: Geoffrey Stephen Graham
  • Publication number: 20140338795
    Abstract: The invention relates to a method for manufacturing a titanium alloy having superelastic properties and/or shape memory for biomedical use, which comprises the steps of: preparing an ingot by melting the various metals that form the desired alloy in a vacuum; optionally homogenizing the ingot in a vacuum by high-temperature annealing (higher than 900° C.); first quenching; mechanical shaping (rolling, drawing, machining or the like); heat treatment for redissolution in beta phase beyond the beta transus temperature (until a second temperature and then maintaining same for a certain time); and second quenching; characterized in that said heat treatment phase is carried out in a gaseous atmosphere and also constitutes a surface treatment suitable for forming on the surface a layer of nitride, carbonitride, oxide, oxynitride or the like.
    Type: Application
    Filed: November 7, 2012
    Publication date: November 20, 2014
    Applicant: INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE RENNES
    Inventors: Thierry Gloriant, Doina Gordin
  • Patent number: 8815023
    Abstract: Embodiments of the disclosed technology provide methods of boronizing titanium and other metals and metal alloys. The method proceeds, in an embodiment of the disclosed technology, by using a boron source, and placing it in a heated environment, followed by a reduced pressure environment, as is described in the disclosure. In a solid phase embodiment of the disclosure, boronized stainless steel alloys are produced having zero galling at 17,000 psi.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: August 26, 2014
    Assignee: Universal Global Products, LLC
    Inventors: Svetoslav Zlatev, Roumiana Petrova
  • Patent number: 8771438
    Abstract: Disclosed is a plasma nitriding surface treatment method for a gray cast iron part. In the plasma nitriding surface treatment method, a nitride layer is formed on a surface of the gray cast iron part by a selective ion nitriding treatment. The plasma nitriding surface treatment method is carried out such that the surface of the gray cast iron part is prevented from being deformed, and a reduction of the frictional coefficient of the part is prevented.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: July 8, 2014
    Assignee: Hyundai Motor Company
    Inventors: Jae Young Lee, Seong Jin Kim, Jai Min Han, Yoon Cheol Kim, Hyun Dal Park
  • Patent number: 8747573
    Abstract: The invention relates to a method for producing corrosion-resistant surfaces of nitrated or nitrocarburated steel components, the surfaces having roughness heights (Rz) of Rz?1.5 ?m. The method comprises the following steps: oxidation of the surfaces of the nitrated or nitrocarburated components in a first oxidation step; carrying out at least a second oxidation of the component surfaces in an immediately subsequent oxidation step; polishing the component surface in a final method step, directly after the final oxidation.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: June 10, 2014
    Assignee: Durferrit GmbH
    Inventor: Ulrich Baudis
  • Patent number: 8734603
    Abstract: The invention relates to a method for producing a friction element (3) comprising the steps: providing a metal main body (10), hardening the main body (10) on at least part of its surface (11, 12) in a salt bath, wherein the salt bath hardening is the final method step, and no further processing of the hardened surface (11, 12) is performed. Furthermore, the invention relates to a friction element produced according to this method and a friction component comprising the latter.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: May 27, 2014
    Assignee: Miba Frictec GmbH
    Inventors: Zisis Tsioptsias, Gerhard Hartner
  • Publication number: 20140102592
    Abstract: To provide a steel product excelling in both corrosion resistance and adhesion. A steel product having a nitride layer and a nitrogen diffused layer formed on the surface of a steel base material is provided. The nitride layer includes a first compound layer formed on a nitrogen diffused layer side and a second compound layer formed on a surface side of the first compound layer. The first compound layer has an ?-structure mainly made of Fe3N, and the second compound layer has a higher nitrogen concentration than the first compound layer and has a concavoconvex formed on the surface thereof. Thus, the nitride layer having excellent adhesion, an extremely small carbon containing amount, and high corrosion resistance can be formed.
    Type: Application
    Filed: April 19, 2012
    Publication date: April 17, 2014
    Inventors: Koji Nishikawa, Hisao Fujikawa, Takanori Watanabe, Hideaki Iwamura, Morihiro Fujita
  • Publication number: 20140060983
    Abstract: A vehicular disc brake rotor is provided with a cast-iron base, a nitrogen diffusion layer formed on the cast-iron base, a nitrogen compound layer formed on the nitrogen diffusion layer, and an iron oxide layer including Fe3O4 and formed on the nitrogen compound layer. In a burnish and a first re-burnish of a “Passenger car-Braking device-Dynamometer test procedures” (which is based on JASO C 406:2000), a change ratio of a frictional coefficient between the burnish and the first re-burnish is 10% or less.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 6, 2014
    Applicant: Akebono Brake Industry Co., Ltd
    Inventors: Yoshiyuki SUGAI, Katsuji SEKI, Takuya TAKADA
  • Publication number: 20140060704
    Abstract: A cast-iron friction member is manufactured by: performing a nitrocarburizing treatment on a cast workpiece at a treatment temperature of 500° C. to 600° C. to thus form a nitrogen compound layer on a surface of the workpiece; and exposing the workpiece to an atmosphere when a temperature becomes 400° C. to 480° C. after the nitrocarburizing treatment so as to cool the workpiece to a room temperature while keeping a contact state with oxygen to thus form an iron oxide layer including Fe3O4 on a surface of the nitrogen compound layer.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 6, 2014
    Applicant: AKEBOND BRAKE INDUSTRY CO., LTD.
    Inventors: Yoshiyuki SUGAI, Katsuji SEKI, Takuya TAKADA
  • Publication number: 20140048179
    Abstract: A method of manufacturing a machine component includes the steps of: preparing a member made of steel; forming a film containing vanadium at a surface by subjecting the member to oxidation; and forming a nitrogen-enriched layer by heating the member having the film formed in a heat treatment gas atmosphere containing nitrogen gas and absent of ammonia gas for carbonitriding.
    Type: Application
    Filed: April 25, 2012
    Publication date: February 20, 2014
    Applicant: NTN CORPORATION
    Inventors: Takumi Fujita, Kazuhiro Yagita
  • Publication number: 20130284318
    Abstract: Disclosed is a plasma nitriding surface treatment method for a gray cast iron part. In the plasma nitriding surface treatment method, a nitride layer is formed on a surface of the gray cast iron part by a selective ion nitriding treatment. The plasma nitriding surface treatment method is carried out such that the surface of the gray cast iron part is prevented from being deformed, and a reduction of the frictional coefficient of the part is prevented.
    Type: Application
    Filed: September 13, 2012
    Publication date: October 31, 2013
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Jae Young Lee, Seong Jin Kim, Jai Min Han, Yoon Cheol Kim, Hyun Dal Park
  • Patent number: 8545642
    Abstract: Providing an iron and steel material having quenched surface part, avoiding oxidation of a compound layer formed on the surface of the iron and steel material due to quenching, its production method, and an induction-quenched component. A quenched iron and steel material 10 comprises an iron and steel material 11, a compound layer 12 formed on the iron and steel material 11, and an antioxidant cover layer 13 formed on the compound layer 12. The iron and steel material 11 has a hardened layer having a given depth, and the surface of the iron and steel material 11 has enhanced hardness.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: October 1, 2013
    Assignees: Neturen Co., Ltd., Nihon Parkerizing Co., Ltd.
    Inventors: Kengo Fukazawa, Yoshitaka Misaka, Kazuhiro Kawasaki, Yoshihiro Ikeda, Masaaki Beppu, Arata Suda
  • Patent number: 8512483
    Abstract: The present invention relates to a method for manufacturing an implant, in particular an intraluminal endoprosthesis, having a body containing metallic material, preferably iron. For controlling the degradation of the implant the method includes the following steps: (a) providing a first part of the implant body; and (b) performing heat treatment which alters the carbon content and/or the boron content and/or the nitrogen content in the structure of a near-surface boundary layer in the first part of the implant body in such a way that strain on the lattice or a lattice transformation, optionally following a subsequent mechanical load, is achieved in the near-surface boundary layer. Such an implant is also described.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: August 20, 2013
    Assignee: BIOTRONIK VI Patent AG
    Inventors: Ullrich Bayer, Bodo Gerold
  • Publication number: 20130206284
    Abstract: A method for producing a steel component with a metallic anti-corrosion coating from a sheet steel product comprising at least 0.4% by weight Mn is disclosed. The sheet steel product is annealed in a continuous furnace under an annealing atmosphere containing up to 25% by volume H2, 0.1% to 10% by volume NH3, H2O, N2, and process-related impurities as the remainder, at a dew point between ?50° C. and ?5° C. at a temperature of 400 to 1100° C. for 5 to 600 s. The annealed sheet steel product has a 5 to 200 ?m thick nitration layer with a particle size finer than the particle size of the inner core layer. Once coated with a metallic protective layer, a blank is separated from the annealed sheet steel product, heated to an austenitising temperature of 780 to 950° C., hot-formed, and cooled so that a hardened structure forms.
    Type: Application
    Filed: June 14, 2011
    Publication date: August 15, 2013
    Applicant: THYSSENKRUPP STEEL EUROPE AG
    Inventors: Martin Norden, Jens Kondrattuk, Manfred Meurer, Patrik Kuhn, Volker Marx, Horst Berndsen, Frank Friedel
  • Publication number: 20120312425
    Abstract: The present invention provides a steel product for gas carburizing used for manufacturing a carburized steel part. In the above steel product for gas carburizing, a composition of a base metal contains, in mass %, C: 0.1 to 0.4%, Si: exceeding 1.2 to 4.0%, Mn: 0.2 to 3.0%, Cr: 0.5 to 5.0%, Al: 0.005 to 0.1%, S: 0.001 to 0.3%, N: 0.003 to 0.03%, and O: limited to 0.0050% or less, and P: limited to 0.025% or less, and when the contents of Si, Mn, and Cr (mass %) are set to [Si %], [Mn %], and [Cr %], Expression (1) below is satisfied, and an alloy shortage layer satisfying Expression (2) below exists in a range from its surface to 2 to 50 ?m in depth. 32?3.5[Si %]+[Mn %]+3[Cr %]>9??(1) 3.
    Type: Application
    Filed: December 7, 2011
    Publication date: December 13, 2012
    Inventors: Tatsuya Koyama, Manabu Kubota
  • Patent number: 8287667
    Abstract: Ferritic nitrocarburized surface treatment of cast iron brake rotors providing oxidation resistance, good braking performance and absence of distortion. Machined brake rotors are pre-heated, then immersed into a high temperature molten nitrocarburizing salt bath for a first predetermined dwell time. After removing the brake rotors from the nitrocarburizing salt bath, the brake rotors are directly immersed into an oxidizing salt bath at a lower temperature than the nitrocarburizing salt bath so that the brake rotors are thermally quenched. After a predetermined second dwell time in the oxidizing salt bath, the brake rotors are removed therefrom and further cooled to room temperature, either by water application thermal quenching or slow cooling in air. A fixture provides stable holding the brake rotors with a minimum of contact during placement in the salt baths.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: October 16, 2012
    Assignees: GM Global Technology Operations LLC, Kolene Corporation
    Inventors: Michael L. Holly, Douglas N. Reed, James R. Easterday
  • Patent number: 8268094
    Abstract: A gas injector including in which a gas is passed through high-voltage/low-current electrical discharges before being discharged into the chamber of a thermal treatment furnace. The electrical activation of the gas accelerates desirable reactions between the gas, gases in the furnace chamber, and the chamber workload. Preferably, a hot electrode is electrically charged and the other parts of the gas injector and the furnace are grounded. Also provided is a method for activating an atmosphere within the reaction chamber of a controlled-atmosphere reactor.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: September 18, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Zbigniew Zurecki, Robert Ellsworth Knorr, Jr., John Lewis Green
  • Patent number: 8231741
    Abstract: An internal combustion piston comprises a modified layer produced by a surface treatment including injecting injection powders having a diameter of 20 ?m to 400 ?m and containing a reinforcing element to be collided with a surface of the internal combustion piston obtained by casting and forging by injecting at an injection speed of 80 m/s or more or at an injection pressure of 0.3 MPa or more, the reinforcing element improving a strength of an alloy comprising the piston when being diffused and penetrated in the alloy, wherein by the surface treatment, oxides generated on the surface of the piston by the casting and forging are removed, and surface flaws generated on the surface are repaired, whereby the modified layer is formed to have a uniformly fine-grained metal microstructure which contains the reinforcing element in the injection powders diffused and penetrated in the vicinity of the surface of the piston and an alloy element of the alloy comprising the piston.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: July 31, 2012
    Assignees: Art Metal Mfg Co., Ltd., Fuji Kihan Co., Ltd.
    Inventors: Nobuyuki Fujiwara, Yoshio Miyasaka
  • Patent number: 8187393
    Abstract: Embodiments of the disclosed technology provide methods of boronizing titanium and other metals and metal alloys. The method proceeds, in an embodiment of the disclosed technology, by using a boron source, and placing it in a heated environment, followed by a reduced pressure environment, as is described in the disclosure. In a solid phase embodiment of the disclosure, boronized stainless steel alloys are produced having zero galling at 17,000 psi.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: May 29, 2012
    Assignee: Universal Global Products, LLC
    Inventors: Svetoslav Zlatev, Roumiana Petrova
  • Patent number: 8172958
    Abstract: The present disclosure provides methods of making an improved composition and medical implant made therefrom. The methods generally comprise forming a ceramic layer, diffusion hardening, and optionally, forming another ceramic layer. The present disclosure provides methods of making an improved composition having a thick diffusion hardened zone and orthopedic implants comprising the improved composition.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: May 8, 2012
    Assignee: Smith & Nephew, Inc.
    Inventors: Vivek Pawar, Shilesh C. Jani, Carolyn Weaver
  • Patent number: 8097357
    Abstract: A battery can of the present invention ensures a stable and favorable contact with an electrode and thus makes it possible to obtain a highly reliable battery excellent in high rate discharge characteristics. The battery can having an opening, including a cylindrical side portion and a bottom portion, of the present invention is formed from a steel plate. The steel plate has an Ni—Fe alloy layer on the inner face side of the battery can. The Ni—Fe alloy layer has an oxide layer containing iron and having a thickness of 10 to 50 nm on the inner face side of the battery can.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: January 17, 2012
    Assignees: Panasonic Corporation, Toyo Kohan Co., Ltd.
    Inventors: Katsuhiko Mori, Kouhei Kitagawa, Masatoshi Hano, Toru Morimoto, Hideo Omura, Tatsuo Tomomori, Masao Suda, Hitoshi Omura
  • Publication number: 20110315275
    Abstract: A method for processing parts for kitchen tools in order to protect the parts from scratches, includes sequentially: a nitridation step, optionally including a nitrocarburizing step, between 592 and 750° C. in order to promote the formation of a nitrogen austenite layer; and a processing step for promoting the conversion of at least a portion of the nitrogen austenite into a phase with reinforced hardness.
    Type: Application
    Filed: February 18, 2010
    Publication date: December 29, 2011
    Applicant: H.E.F.
    Inventors: Herve Chavanne, Philippe Maurin-Perrier
  • Publication number: 20110094627
    Abstract: The present invention is directed to a method for protecting metal surfaces in oil & gas exploration and production, refinery and petrochemical process applications subject to solid particulate erosion at temperatures of up to 1000° C. The method includes the step of providing the metal surfaces in such applications with a hot erosion resistant cermet lining or insert, wherein the cermet lining or insert includes a) about 30 to about 95 vol % of a ceramic phase, and b) a metal binder phase, wherein the cermet lining or insert has a HEAT erosion resistance index of at least 5.0 and a K1C fracture toughness of at least 7.0 MPa-m1/2. The metal surfaces may also be provided with a hot erosion resistant cermet coating having a HEAT erosion resistance index of at least 5.0.
    Type: Application
    Filed: October 26, 2010
    Publication date: April 28, 2011
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: John R. Peterson, Narasimha-Rao V. Bangaru, Robert Lee Antram, Christopher John Fowler, Neeraj S. Thirumalai, ChangMin Chun, Emery B. Lendvai-Lintner
  • Publication number: 20110077732
    Abstract: The present invention relates to a method for manufacturing an implant, in particular an intraluminal endoprosthesis, having a body containing metallic material, preferably iron. For controlling the degradation of the implant the method includes the following steps: (a) providing a first part of the implant body; and (b) performing heat treatment which alters the carbon content and/or the boron content and/or the nitrogen content in the structure of a near-surface boundary layer in the first part of the implant body in such a way that strain on the lattice or a lattice transformation, optionally following a subsequent mechanical load, is achieved in the near-surface boundary layer. Such an implant is also described.
    Type: Application
    Filed: July 14, 2010
    Publication date: March 31, 2011
    Applicant: BIOTRONIK VI PATENT AG
    Inventors: Ullrich Bayer, Bodo Gerold
  • Patent number: 7811390
    Abstract: A method for producing a carburized part by carburizing a steel member under a vacuum in a decompression furnace while feeding carburizing gas comprises a step for forming an oxide film on at least a part of a surface of the steel member, a step for generating carbon by reducing the oxide film with the carburizing gas, and a step for carburizing the surface of the steel member under a vacuum by diffusing the carbon.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: October 12, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuo Ishii, Tatsumi Tanaka
  • Patent number: 7806311
    Abstract: A method of manufacturing a ceramic/metal composite structure includes the steps of: performing a multi-stage pre-oxidizing process on the copper sheet; placing the copper sheet on a ceramic substrate; and heating the copper sheet and the ceramic substrate to a joining temperature to join the copper sheet and the ceramic substrate together to enhance interface strength between the copper sheet and the ceramic substrate according to the multi-stage pre-oxidizing process. The multi-stage pre-oxidizing process includes a first stage of pre-oxidizing process and a second stage of pre-oxidizing process, and the first and second stages of pre-oxidizing processes are performed in atmospheres with different oxygen partial pressures and at different temperatures.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: October 5, 2010
    Assignee: National Taiwan University
    Inventor: Wei-Hsing Tuan
  • Patent number: 7767033
    Abstract: A method for surface treatment capable of easily improving a mechanical strength of an internal combustion piston at a reasonable cost is provided. A modified surface layer is formed by injecting injection powders containing a reinforcing element to be collided with an Al—Si alloy-based piston obtained by casting and forging by injecting under predetermined conditions, the reinforcing element being diffused and penetrated in the piston to improve the strength thereof. When a function, such as fuel modification, is imparted to the modified surface layer, an element exhibiting a photocatalytic function by oxidation, such as Ti, Sn, Zn, Zr, or W, is selected as the reinforcing element.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: August 3, 2010
    Assignees: Art Metal Mfg Co., Ltd., Fuji Kihan Co., Ltd.
    Inventors: Nobuyuki Fujiwara, Yoshio Miyasaka
  • Publication number: 20090304500
    Abstract: A turbocharger includes a center housing having a bearing surface configured to contact an inner surface of a unison ring. A conversion coating is impregnated onto at least the bearing surface of the center housing.
    Type: Application
    Filed: December 2, 2008
    Publication date: December 10, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Thomas A. Perry, Carnell E. Williams, Julian Velosa, Anil K. Sachdev
  • Patent number: 7572344
    Abstract: A method for the production of wear-resistant edges for a keystone ring for internal combustion engines, involves forming a rectangular ring from a steel strip with a rectangular cross-section, grinding the ring edges and the outer circumferential faces to give the required profile and brushing the inner circumferential face, grinding the upper and lower ring edge to form the keystone ring, complete nitriding of the piston ring surface by a gas-nitriding process (GNS) to form a nitride layer, profiling the nitrided piston ring by grinding and lapping without machining the nitrided edges of the piston ring, stacking the piston rings on the parallel faces, coating the outer circumferential faces of the piston rings with a wearing layer, and grinding the nitrided layer of the faces in the stacked state such that at most a quarter of the total thickness of the nitrided layer is removed.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: August 11, 2009
    Assignee: Mahle GmbH
    Inventors: Kurt Maier, Jose Manoel Martins Leites, Nuno Machado
  • Publication number: 20090194202
    Abstract: Disclosed is a novel process for producing an NaZn13 magnetic alloy which enables to obtain a magnetic alloy having higher characteristics than ever before. Specifically disclosed is a magnetic alloy represented by the following composition formula: (La1-xRx)a(A1-yTMy)bHcNd (wherein R represents at least one or more elements selected from rare earth elements including Y; A represents Si, or Si and at least one or more elements selected from the group consisting of Al, Ga, Ge and Sn; TM represents Fe, or Fe and at least one or more elements selected from the group consisting of Sc, Ti, V, Cr, Mn, Co, Ni, Cu and Zn; and x, y, a, b, c and d respectively satisfy, in atomic percent, the following relations: 0?x?0.2, 0.75?y?0.92, 5.5?a?7.5, 73?b?85, 1.7?c?14 and 0.07?d <5.0; with unavoidable impurities being included).
    Type: Application
    Filed: April 4, 2006
    Publication date: August 6, 2009
    Applicant: HITACHI METALS, LTD.
    Inventor: Shigeho Tanigawa
  • Patent number: 7524791
    Abstract: A method for producing a substrate having a carbon-doped titanium oxide layer, which is excellent in durability (high hardness, scratch resistance, wear resistance, chemical resistance, heat resistance) and functions as a visible light responding photocatalyst, is provided. The surface of a substrate, which has at least a surface layer comprising titanium, a titanium alloy, a titanium alloy oxide, or titanium oxide, is heat-treated in a combustion gas atmosphere of a gas consisting essentially of a hydrocarbon, or in a gas atmosphere consisting essentially of a hydrocarbon, such that the surface temperature of the substrate is 900 to 1,500° C.; or a combustion flame of a gas consisting essentially of a hydrocarbon, is directly struck against the surface of the substrate for heat treatment such that the surface temperature of the substrate is 900 to 1,500° C., thereby forming a carbon-doped titanium oxide layer, whereby the substrate having the carbon-doped titanium oxide layer is obtained.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: April 28, 2009
    Assignee: Central Research Institute of Electric Power Industry
    Inventor: Masahiro Furuya
  • Publication number: 20090014334
    Abstract: This invention involves the technical area of chemical plating in aluminum radiators, referring specifically to the partial chemical plating technique in the inner cavity of aluminum radiator. It undergoes the inner cavity shielding before zinc impregnation and continues chemical oxidization in other parts in the chemical the based on the existing oxidization trough, making the unshielded area unable to sediment a layer of zinc and be plated with nickel and phosphors alloy. Then, it is applied with enclosure technique. The chemical oxidization and enclosure enable the sections other than the inner cavity in the aluminum radiator to be covered with a layer of oxidization film against erosion from acid and alkali, so the sections covered with a oxidization film will not accumulate a layer of zinc nor be plated with nickel and phosphor alloy in the subsequent zinc impregnation and nickel plating. Only the surface of the inner cavity is plated with nickel and phosphor alloy.
    Type: Application
    Filed: October 16, 2007
    Publication date: January 15, 2009
    Applicant: TWD METAL PRODUCTION CO., LTD.
    Inventors: Wenzhen Xie, Donglin Li
  • Publication number: 20080283153
    Abstract: A gas injector including in which a gas is passed through high-voltage/low-current electrical discharges before being discharged into the chamber of a thermal treatment furnace. The electrical activation of the gas accelerates desirable reactions between the gas, gases in the furnace chamber, and the chamber workload. Preferably, a hot electrode is electrically charged and the other parts of the gas injector and the furnace are grounded.
    Type: Application
    Filed: May 1, 2008
    Publication date: November 20, 2008
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Zbigniew Zurecki, Robert Ellsworth Knorr, JR., John Lewis Green
  • Publication number: 20080277030
    Abstract: Components, such as gears and other power transmission components, are formed by near-net-forging a high strength, high toughness ferrous metal alloy, surface processing metal alloy to form a hardened surface region (28), and coating the surface region with a lubricious coating (84) as shown in FIG. 9.
    Type: Application
    Filed: December 13, 2005
    Publication date: November 13, 2008
    Applicant: United Technologies Corporation
    Inventors: Clark V. Cooper, Raymond C. Benn, Bruce D. Hansen
  • Patent number: 7326306
    Abstract: In the present invention, after a nitriding process is performed on a steel, a passivating process in which the steel is heated under an atmosphere containing oxygen is performed. The heating condition of the passivating process is within a range surrounded by (100° C., 120 min), (100° C., 10 min), (125° C., 5 min), (190° C., 5 min), (200° C., 10 min), (200° C., 20 min), (190° C., 30 min), (190° C., 40 min), (180° C., 60 min), and (180° C., 120 min) on coordinate axes of temperature and time. In the process for production of the nitrided steel, uniform passivated layer can be easily formed, and fatigue strength is improved as pitting corrosion resistance is improved.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: February 5, 2008
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kazuo Ishii, Yoshihiro Odagiri, Takeshi Munemura
  • Publication number: 20080000550
    Abstract: Ferritic nitrocarburized surface treatment of cast iron brake rotors providing oxidation resistance, good braking performance and absence of distortion. Machined brake rotors are pre-heated, then immersed into a high temperature molten nitrocarburizing salt bath for a first predetermined dwell time. After removing the brake rotors from the nitrocarburizing salt bath, the brake rotors are directly immersed into an oxidizing salt bath at a lower temperature than the nitrocarburizing salt bath so that the brake rotors are thermally quenched. After a predetermined second dwell time in the oxidizing salt bath, the brake rotors are removed therefrom and further cooled to room temperature, either by water application thermal quenching or slow cooling in air. A fixture provides stable holding the brake rotors with a minimum of contact during placement in the salt baths.
    Type: Application
    Filed: June 29, 2006
    Publication date: January 3, 2008
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS, INC., KOLENE CORPORATION
    Inventors: Michael L. Holly, Douglas N. Reed, James R. Easterday
  • Publication number: 20070267105
    Abstract: The present nitriding-oxidizing method for a metal member is imposed, which includes providing a powdery nitriding agent comprised of a powdery nitride compound and inorganic powder, wherein the powdery nitride compound decomposes below a nitriding-oxidizing temperature to generate nitriding gas, and the inorganic powder does not react; embedding an essential part of the metal member to be nitrided and oxidized into the powdery nitriding agent, and then performing nitridization-oxidization while an oxygen-containing gas is always present in the powdery nitriding agent; and, if necessary, allowing the metal member after nitridization-oxidization to carry out a reoxidization in an oxygen-containing atmosphere. The method of the present invention has a broader temperature range for nitridization-oxidization.
    Type: Application
    Filed: May 18, 2007
    Publication date: November 22, 2007
    Inventor: Ting-Cheng Chou
  • Publication number: 20070251605
    Abstract: The present invention provides a method for producing a highly corrosion-resistant colored article made of steel, which are highly corrosion-resistant and has a variety of vivid surface colors, by subjecting the surface of a nitrided steel article to oxidizing heat treatment to form a colored oxide film layer. The method for producing a highly corrosion-resistant colored article made of steel includes the steps of (a) subjecting an article made of steel to nitriding and (b) subjecting the steel article thus treated in step (a) to surface processing such as abrasion, buffing, polishing or the like, and then to oxidizing heat treatment in an oxidizing atmosphere at 100 to 700° C. for 30 seconds to 100 hours, to form a colored oxide film layer on the surface of the steel article.
    Type: Application
    Filed: January 16, 2007
    Publication date: November 1, 2007
    Inventor: Young Hee Kim
  • Patent number: 7273857
    Abstract: Benzimidazolidinone derivative compounds, which increase acetylcholine signaling or effect in the brain, and highly selective muscarinic agonists, particularly for the M1 and/or M4 receptor subtypes, pharmaceutical compositions comprising the same, as well as methods of treating psychosis using these compounds are disclosed.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: September 25, 2007
    Assignee: ACADIA Pharmaceuticals Inc.
    Inventors: Nicholas Michael Kelly, Kristian Norup Koch, Bo-Ragnar Tolf