Nitriding Patents (Class 148/238)
  • Publication number: 20150076769
    Abstract: A piston ring for at least one of a piston of an internal combustion engine and a compressor may include at least one substantially annular metallic base having a nitrided layer. The base may include at least one chamfer and at least one outer surface that maintains contact with a layer of lubricating oil. The nitrided layer may exhibit a substantially constant thickness over at least one surface of the base and the at least one chamfer. The nitrided layer may include a nitrided diffusion layer that maintains direct contact with the layer of lubricating oil and has a residual tension ranging from +100 megapascal to ?100 megapascal.
    Type: Application
    Filed: August 17, 2012
    Publication date: March 19, 2015
    Applicants: Mahle International GmbH, Mahle - Metal Leve S/A
    Inventors: Rodrigo Favaron, Gisela A. Marques
  • Publication number: 20150053310
    Abstract: A method for producing a welded part from two components, where at least one of the components has a hardened surface. The method can include case hardening the surface of one of the components using a salt bath nitriding process and then welding the case hardened first component to the second component by gas metal arc welding (GMAW).
    Type: Application
    Filed: August 23, 2013
    Publication date: February 26, 2015
    Applicant: Whirlpool Corporation
    Inventors: DANIEL L. FONDRIEST, KURT WERNER, RICHARD J. WIDMAN, LUKE J. WILKINS, STEVEN J. FLICK
  • Patent number: 8961711
    Abstract: A method and apparatus for nitriding of highly-alloyed metal article is disclosed herein. In one embodiment, the method and apparatus uses at least one nitrogen source gas such as nitrogen and/or ammonia in an oxygen-free nitriding gas atmosphere, with small additions of one or more hydrocarbons. In this or other embodiments, the method and apparatus described herein is applicable to metal articles comprising iron, nickel and cobalt based alloys and which tend to form passive oxide films on at least a portion of their surface, heated to and nitrided at a certain temperature without prior surface preparation. The apparatus includes an external gas injector comprising 50-60 Hz AC, high voltage/low-current arc discharge electrodes, activating the nitriding atmosphere stream on its way from source to nitriding furnace.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: February 24, 2015
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Zbigniew Zurecki, Xiaolan Wang
  • Publication number: 20150023751
    Abstract: A cutting tool insert for machining by chip removal includes a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel, onto which a hard and wear resistant coating is deposited. The coating includes at least one polycrystalline nanolaminated structure having sequences of alternating A and B layers, wherein layer A is (Alx1Me11-x1)Ny1 with 0.3<x1<0.95, 0.9<y1<1.1 and Me1 is one or more of the elements Ti, Y, V, Nb, Mo, Si and W, or Me1 is Ti and one or more of the following elements Y, V, Nb, Mo, Si, Cr and W, and layer B is (Zr1-x2-z2Six2Me2z2)Ny2 with 0<x2<0.30, 0.90<y2 <1.20, 0<z2<0.25 and Me2 is one or more of the elements Y, Ti, Nb, Ta, Cr, Mo, W and Al.
    Type: Application
    Filed: March 6, 2013
    Publication date: January 22, 2015
    Inventors: Jon Andersson, Mats Johansson
  • Publication number: 20150017052
    Abstract: A method for joining metal components by welding includes welding a first component to a second component. At least one of the components is a nitrogen-containing component, and titanium is added to at least one of the components before the welding step.
    Type: Application
    Filed: November 15, 2012
    Publication date: January 15, 2015
    Inventor: Mario Matic
  • Publication number: 20140352848
    Abstract: Disclosed are a method for adjusting the pore size of a porous metal material and the pore structure of a porous metal material. The method comprises: permeating at least one element into the surface of the pores of the material to generate a permeated layer on the surface of the pores, so that the average pore size of the porous material is reduced to within a certain range, thus obtaining a pore structure of the porous metal material having the pores distributed on the surface of the material and the permeated layer provided on the surface of the pores.
    Type: Application
    Filed: December 31, 2011
    Publication date: December 4, 2014
    Applicant: INTERMET TECHNOLOGIES CHENGDU CO., LTD.
    Inventors: Lin Gao, Yuehui He, Tao Wang, Bo Li
  • Publication number: 20140291080
    Abstract: A hand-held work implement having a tool has a braking device for the tool that includes a brake band which wraps around a brake drum. The brake band and the brake drum undergo friction as they move relative to one another during braking. At least one of the band or drum comprises an austenitic steel, a duplex steel, super duplex steel, a nickel-base alloy or a cobalt-base alloy and has a base body and a marginal layer. The hardness of the marginal layer is approximately 150% to approximately 600% of the hardness of the base body and the carbide proportion in the marginal layer is less than approximately 0.5% by weight. A process for production of the foregoing includes diffusing carbon and/or nitrogen into a marginal layer at a temperature of less than 500° C.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: ANDREAS STIHL AG & CO. KG
    Inventors: Norbert Apfel, Manfred Schumacher, Ralf Cornelsen
  • Patent number: 8845823
    Abstract: A method of activating an article of passive ferrous or non-ferrous metal by heating at least one compound containing nitrogen and carbon, wherein the article is treated with gaseous species derived from the compound. The activated article can be subsequently carburized, nitrided or nitrocarburized in shorter time at lower temperature and resulting superior mechanical properties compared with non-activated articles and even articles of stainless steel, nickel alloy, cobalt alloy or titanium based material can be carburized, nitrided or nitrocarburized.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: September 30, 2014
    Assignees: Expanite A/S, Danmarks Tekniske Universitet—DTV
    Inventors: Thomas Lundin Christiansen, Thomas Strabo Hummelshøj, Marcel A. J. Somers
  • Patent number: 8845825
    Abstract: The present invention provides spring use heat treated steel which is cold coiled, can achieve both sufficient atmospheric strength and coilability, has a tensile strength of 2000 MPa or more, and can improve the performance as a spring by heat treatment after spring fabrication, that is, high strength spring-use heat treated steel characterized by containing, by mass %, C: 0.45 to 0.9%, Si: 1.7 to 3.0%, and Mn: 0.1 to 2.0%, restricting N: to 0.007% or less, having a balance of Fe and unavoidable impurities, and satisfying, in terms of the analyzed value of the extracted residue after heat treatment, [amount of Fe in residue on 0.2 ?m filter/[steel electrolysis amount]×100?1.1.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: September 30, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Masayuki Hashimura, Tatsuro Ochi, Takayuki Kisu, Hiroshi Hagiwara
  • Patent number: 8815020
    Abstract: A method of manufacturing a laminar ring, which permits an improvement of efficiency of a nitriding treatment of a plurality of metallic band members which constitute the laminar ring is provided.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: August 26, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koji Nishida, Yuji Suzuki
  • 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: 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
  • Patent number: 8734598
    Abstract: There is provided an aluminum surface treatment process, comprising: preparing an aluminum material containing silicon and magnesium; and plasma nitriding the aluminum material to form an aluminum nitride region on a surface of the aluminum material.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: May 27, 2014
    Assignee: Jatco Ltd
    Inventors: Fumiya Yakabe, Yoshio Jimbo, Kanji Ueno, Hideyuki Kuwahara
  • Publication number: 20140102593
    Abstract: A furnace of heat treatment capable of keeping a stable nitriding quality for a long period of time is provided. The furnace of heat treatment performs a halogenation treatment and a nitriding treatment by heating a steel material under a predetermined atmosphere. An alloy containing Ni ranging between 50 mass % or more and 80 mass % or less and Fe ranging between 0 mass % or more and 20 mass % or less is used as a material of surfaces of core internals exposed to a treatment space where the nitriding treatment is performed. Accordingly, a nitriding reaction is hardly caused on the surfaces of the core internals, and the halogenation treatment and the nitriding treatment to an article to be treated can be stably executed for a long period of time. Further, a nitrided layer can be stably formed according to purposes on any types of steel materials including a steel type hard to be nitride.
    Type: Application
    Filed: December 19, 2013
    Publication date: April 17, 2014
    Applicant: AIR WATER INC.
    Inventors: Takanori Watanabe, Asahiro Sakata, Hideaki Iwamura
  • Patent number: 8699655
    Abstract: The present invention relates to tubular elements, such as fuel assembly tubes, which are designed to be used in high pressure and high temperature water in nuclear reactors, such as pressurized water nuclear reactors. In particular, the present invention relates to a method of improving wear resistance and corrosion resistance by depositing a protective coating having a depth of from about 5 to about 25 ?m on the surface of the tubular elements. The coating is provided by nitriding the tubular element at a temperature of from about 400° C. to about 440° C. The nitridation of the tubular element can be carried out for a duration of from about 12 hours to about 40 hours.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: April 15, 2014
    Assignee: Westinghouse Electric Company, LLC
    Inventor: Nagwa Mahmoud Elshaik
  • Publication number: 20140060705
    Abstract: In a method for gas-nitriding high-pressure components of a high-pressure accumulator (rail) (1) for a common-rail injection system of an internal combustion engine, in which an internal thread of a feed or discharge opening (2) passing through the wall of the high-pressure accumulator (1) is covered during gassing, a cover screw (6) is screwed into the thread (5) to cover the thread (5).
    Type: Application
    Filed: April 5, 2012
    Publication date: March 6, 2014
    Applicant: Robert Bosch GMBH
    Inventor: Christian Graspeuntner
  • Publication number: 20140048182
    Abstract: A surface treatment method for a metal material is provided which includes applying diluted sulfuric acid to a surface of the metal material that is composed primarily of iron, performing a heat treatment on the metal material in the presence of at least one of CO, CO2 and organic gas under nitriding conditions under which a nitrided layer is formed in a superficial layer of the metal material after the application of the diluted sulfuric acid to form a carbon film which includes at least one of carbon nanocoils, carbon nanotubes and carbon nanofilaments on a surface of the nitrided layer of the metal material.
    Type: Application
    Filed: April 12, 2012
    Publication date: February 20, 2014
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC INTERNATIONAL CO. LTD., TOYOTA SCHOOL FOUNDATION
    Inventors: Yuichi Furukawa, Masahiro Okumiya, Yoshiki Tsunekawa, Nao Kumemoto, Fumio Kawahara, Katsuhiro Takami
  • Patent number: 8636947
    Abstract: The present invention provides an improved metal separator for a fuel cell and a method for preparing same. More particularly, the invention provides a metal separator for a fuel cell, whereby the separator has a surface structure that imparts reduced contact resistance, improved corrosion resistance, and stable electrical conductivity. The invention further provides a surface treatment method for making the metal separator of the invention. The inventive method comprises sintering Fe—Cr—B—V-based powder on the surface of a metal foam to form an alloy layer; and forming a nitride layer of a (Cr—V—B)N-based material while supplying nitrogen gas on the surface of the alloy layer.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: January 28, 2014
    Assignee: Hyundai Motor Company
    Inventors: Young Min Nam, Yoo Chang Yang, Suk Min Baeck, Seung Gyun Ahn
  • Patent number: 8613807
    Abstract: A conductive film comprises a phosphide particle coated film formed by attaching raw material particles including phosphide particles comprising a compound of Ti and/or Fe, and P to a surface of a substrate material. This conductive film exhibits good corrosion resistant conductivity, and can be easily formed at low costs because of comprising the phosphide particle coated film. A corrosion-resistant conduction film comprises an iron-containing titanium phosphide layer containing Ti, Fe and P as essential basic elements. A corrosion-resistant conduction material having this corrosion-resistant conduction film on a surface of a substrate exhibits good corrosion resistance or conductivity. This corrosion-resistant conduction material can be obtained, for example, by a process comprising a plating step of forming an Ni plating layer on a surface of a Ti-based material substrate and a nitriding step of applying nitriding treatment to the Ti-based material substrate after the plating step at not more than 880 deg.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: December 24, 2013
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Toshio Horie, Gaku Kitahara, Nobuaki Suzuki, Fumio Shimizu, Takao Kobayashi, Ken-ichi Suzuki, Shigeki Oshima
  • Publication number: 20130216421
    Abstract: A method and process for at least partially forming a medical device that is at least partially formed of a metal alloy which improves the physical properties of the medical device.
    Type: Application
    Filed: February 25, 2013
    Publication date: August 22, 2013
    Applicant: Rich Products Corporation
    Inventors: Raymond W. Buckman, JR., Udayan Patel, Joseph Furst
  • 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
  • Patent number: 8398929
    Abstract: The disclosure provides a device and method used to produce a tubular structure made of a refractory metal compound. In particular, the disclosure provides a device and method used to produce a tubular structure made of a refractory metal compound by reacting a green tubular structure made of a refractory metal with at least one reactive gas.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: March 19, 2013
    Assignee: Nitride Solutions, Inc.
    Inventor: Jason Schmitt
  • Publication number: 20130045360
    Abstract: Provided according to embodiments of the invention are methods of manufacturing implant devices. In methods described herein, implant devices are exposed to a reactive gas that includes a reactive species, and optionally, an inert gas, at elevated temperatures, for a duration sufficient to generate a high density of nanoscale structures on the exposed surface of the device. Also provided are implant devices formed by methods described herein.
    Type: Application
    Filed: January 28, 2011
    Publication date: February 21, 2013
    Applicant: Georgia Tech Research Corporation
    Inventors: Rolando Arturo Gittens Ibacache, Kenneth H. Sandhage, Rina Tannenbaum, Zvi Schwartz, Barbara D. Boyan
  • Publication number: 20130037174
    Abstract: Provided is a method of nitriding a surface of aluminum or aluminum alloy by cold spraying. That is, a surface of aluminum or aluminum alloy is coated by cold spraying, and then a heat treatment is performed thereon at low temperature for a short time period. Accordingly, the method is suitable for nitriding a surface of Al and Al alloy, which is very difficult to be nitrided, at low production costs. The method includes removing a foreign material from a surface of a mother substrate comprising Al or Al alloy; cold spraying 15 to 50 wt % of a catalyst powder and 50 to 85 wt % of a coating agent powder on the surface of the mother substrate to form a coating layer; and heat treating the coating layer at a temperature of 450 to 630° C. in a nitrogen atmosphere for 2 to 24 hours.
    Type: Application
    Filed: April 11, 2011
    Publication date: February 14, 2013
    Applicant: AJOU UNIVERSITY INDUSTRY COOPERATION FOUNDATION
    Inventors: Kyung Hyun Ko, Hyuk Jun Lee
  • Patent number: 8343449
    Abstract: The disclosure provides a device and method used to produce a tubular structure made of a refractory metal compound. In particular, the disclosure provides a device and method used to produce a tubular structure made of a refractory metal compound by reacting a green tubular structure made of a refractory metal with at least one reactive gas.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: January 1, 2013
    Assignee: Nitride Solutions, Inc.
    Inventor: Jason Schmitt
  • Publication number: 20120325373
    Abstract: Provided is a method of treating a metal surface, which can improve surface properties of a target metal, such as surface hardness and wear resistance in a simple manner and at low cost using very simple equipment alone, and which can prevent the deterioration of the metal to create high added value. The present invention is comprised of a method of treating a metal surface, characterized in that: heat-treating a target metal (10) to be surface-modified in nitrogen gas atmosphere (S), in such a state where the target metal (10) is buried in a carbon source powder (12) comprising a carbon powder and a powder of iron or an iron alloy mainly comprising iron and containing carbon, whereby the surface of the target metal (10) is at least nitrided or nitrogen-absorbed to modify the surface.
    Type: Application
    Filed: December 29, 2010
    Publication date: December 27, 2012
    Applicant: National University Corporation Kumamoto University
    Inventors: Yasuhiro Morizono, Sadahiro Tsurekawa, Tatsuya Sako, Hiroyuki Nemoto, Yuka Kawano
  • Publication number: 20120291923
    Abstract: Providing a method of manufacturing a laminar ring, which permits an improvement of efficiency of a nitriding treatment of a plurality of metallic band members which constitute the laminar ring.
    Type: Application
    Filed: December 25, 2009
    Publication date: November 22, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Nishida, Yuji Suzuki
  • Patent number: 8238078
    Abstract: The present invention relates to valve metal particles uniformly containing nitrogen and a method for preparing the same, and a valve metal green pellet and a sintered pellet made from the particles, and an electrolytic capacitor anode. The present invention provides valve metal particles uniformly containing nitrogen, wherein the difference ratio of nitrogen contents of particles is 20% or less. The present invention provides a process for preparing said valve metal particles uniformly containing nitrogen, wherein the raw material particles of the valve metal were heated in a nitrogen-containing gas at a temperature of 200° C. or less for 2 hours or more. The present invention also provides a valve metal green pellet made from said valve metal particles. The present invention also provides a valve metal sintered pellet.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: August 7, 2012
    Assignee: Ningxia Orient Tantalum Industry Co., Ltd.
    Inventors: Bin Li, Luntao Pan, Aiguo Zheng, Yuezhong Ma, Yuewei Cheng, Xuecheng Dong, Xueqing Zhang, Zhidao Wang, Baojun Zhu
  • Publication number: 20120177457
    Abstract: A method of manufacturing a gear by a skiving process, the skiving process utilizing a cutter including a rotational axis inclined to a rotational axis of a work to be processed into the gear, the skiving process feeding the cutter in a tooth trace direction of a tooth to be formed at the work in a state where the cutter rotates in synchronization with the work, the method includes a surface hardening process for hardening a work surface of the work before the skiving process is performed.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 12, 2012
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Eiri NAGATA
  • Publication number: 20120168033
    Abstract: The invention relates to a method and device for thermally treating workpieces, the device including a cooling chamber and two or more cementing chambers in which the workpieces are heated to a temperature of 950 to 1200° C. by means of direct heat radiation from a heating device.
    Type: Application
    Filed: September 6, 2010
    Publication date: July 5, 2012
    Applicant: Ald Vacuum Technologies GMBH
    Inventors: Volker Heuer, Klaus Loeser, Gunther Schmitt, Gerhard Welzig
  • Publication number: 20120171468
    Abstract: The present invention provides titanium material for a separator for solid polymer fuel cell use comprised of titanium which has a surface layer part where conductive compound particles are affixed, which is excellent in contact resistance between the separator surface and carbon paper and in durability, and which is low in cost and superior in recyclability and a method of production of the same. This titanium material for separator use has on the surface of the titanium base material a film comprised of the titanium compound particles made of titanium carbide, titanium nitride, or titanium carbonitride and titanium oxide. The film has a thickness of 0.1 to 1 ?m, the coverage rate is an area percentage of 20% or more, and the contents of carbon and nitrogen in the film total 5 to 40 at %. The titanium material for a separator is produced by annealing or shot blasting and pickling.
    Type: Application
    Filed: July 28, 2010
    Publication date: July 5, 2012
    Inventors: Koki Tanaka, Kazuhiro Takahashi, Hiroshi Kihira, Kiyonori Tokuno
  • Publication number: 20120160629
    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: Application
    Filed: December 1, 2011
    Publication date: June 28, 2012
    Applicant: Miba Frictec GmbH
    Inventors: Zisis TSIOPTSIAS, Gerhard HARTNER
  • Publication number: 20120126488
    Abstract: There is described a piston ring, particularly devised for use in internal combustion engines or compressors, comprising at least a metallic base (2) to which there is applied, by the process of physical vapor deposition (PVD), a coating (3) of chromium nitride that comprises a periodicity (P), formed by at least two adjacent layers (5,5?), each layer (5,5?) having a predominantly chromium nitride phase different from the adjacent layer.
    Type: Application
    Filed: June 29, 2010
    Publication date: May 24, 2012
    Applicants: MAHLE METAL LEVE S/A, MAHLE INTERNATIONAL GMBH
    Inventor: Juliano Avelar Araújo
  • Publication number: 20120125486
    Abstract: The disclosure concerns a method for treating a material in a static magnetic field having an intensity of more than 1 Tesla, including the following steps: a first step to heat the material, a second step to apply to the material a thermal shock and/or thermomechanical treatment and/or chemical treatment, wherein during at least the second treatment step, the material is subjected to the magnetic field while being held in position within the magnetic field.
    Type: Application
    Filed: July 29, 2010
    Publication date: May 24, 2012
    Applicants: UNIVERSITE JOSEPH FOURIER- GRENOBLE 1, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
    Inventors: Thomas Garcin, Sophie Rivoirard, Pierre-Frédéric Sibeud, Eric Beaugnon
  • Publication number: 20120118435
    Abstract: A method and apparatus for nitriding of highly-alloyed metal article is disclosed herein. In one embodiment, the method and apparatus uses at least one nitrogen source gas such as nitrogen and/or ammonia in an oxygen-free nitriding gas atmosphere, with small additions of one or more hydrocarbons. In this or other embodiments, the method and apparatus described herein is applicable to metal articles comprising iron, nickel and cobalt based alloys and which tend to form passive oxide films on at least a portion of their surface, heated to and nitrided at a certain temperature without prior surface preparation. The apparatus includes an external gas injector comprising 50-60 Hz AC, high voltage/low-current arc discharge electrodes, activating the nitriding atmosphere stream on its way from source to nitriding furnace.
    Type: Application
    Filed: May 18, 2011
    Publication date: May 17, 2012
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Zbigniew Zurecki, Xiaolan Wang
  • Publication number: 20120111456
    Abstract: A method of activating an article of passive ferrous or non-ferrous metal by heating at least one compound containing nitrogen and carbon, wherein the article is treated with gaseous species derived from the compound. The activated article can be subsequently carburised, nitrided or nitrocarburised in shorter time at lower temperature and resulting superior mechanical properties compared with non-activated articles and even articles of stainless steel, nickel alloy, cobalt alloy or titanium based material can be carburised, nitrided or nitrocarburised.
    Type: Application
    Filed: July 19, 2010
    Publication date: May 10, 2012
    Applicant: EXPANITE A/S
    Inventors: Thomas Lundin Christiansen, Thomas Strabo Hummelshøj, Marcel A. J. Somers
  • Patent number: 8168118
    Abstract: A method of forming a sputtering target and other metal articles having controlled oxygen and nitrogen content levels and the articles so formed are described. The method includes surface-nitriding a deoxidized metal powder and further includes consolidating the powder by a powder metallurgy technique. Preferred metal powders include, but are not limited to, valve metals, including tantalum, niobium, and alloys thereof.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: May 1, 2012
    Assignee: Cabot Corporation
    Inventors: Christopher A. Michaluk, Shi Yuan, James D. Maguire, Jr.
  • Publication number: 20120003532
    Abstract: The invention provides a protected metal anode architecture comprising: a metal anode layer; and an organic protection film formed over and optionally in direct contact with the metal anode layer, wherein the metal anode layer comprises a metal selected from the group consisting of an alkaline metal and an alkaline earth metal, and the organic protection film comprises a reaction product of the metal and an electron donor compound. The invention further provides a method of forming a protected metal anode architecture.
    Type: Application
    Filed: July 5, 2011
    Publication date: January 5, 2012
    Inventors: Michael Edward Badding, Lin He, Lezhi Huang, Yu Liu, Zhaoyin Wen, Meifen Wu
  • Publication number: 20110209799
    Abstract: A Co—Cr—Mo alloy with nitrogen addition composed of 26 to 35% by weight of Cr, 2 to 8% by weight of Mo, 0.1 to 0.3% by weight of N, and balance of Co is subjected to solution treatment and then subjected to isothermal aging treatment holding the alloy at 670 to 830° C. for a predetermined period of time to form a multi-phase structure composed of an ?-phase and a Cr nitride by means of an isothermal aging effect. After cooling, the alloy subjected to reverse transformation treatment in which the alloy is heated at a temperature range of 870 to 1100° C. for reverse transformation to a single ?-phase from the multi-phase structure composed of an ?-phase and a Cr nitride.
    Type: Application
    Filed: September 2, 2009
    Publication date: September 1, 2011
    Applicant: TOHOKU UNIVERSITY
    Inventors: Shingo Kurosu, Akihiko Chiba, Hiroaki Matsumoto
  • Publication number: 20110135383
    Abstract: The present disclosure is directed to a pin joint component for a pin joint assembly that has improved wear surfaces, especially for those portions of the pin joint component surface that interface thrust rings, lips, and other adjacent wear components. The pin joint component comprises a first treated region that is formed by removing material from the wear surface of the pin joint component and replaced with clad material. Prior to this operation, a second treated region is formed by removing material from a section of the pin joint component distinct from the first treated region and performing a nitriding process thereon.
    Type: Application
    Filed: October 21, 2010
    Publication date: June 9, 2011
    Applicant: Caterpillar Inc.
    Inventors: Roger Lee Recker, Stan R. Parrott
  • Publication number: 20110104384
    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: May 5, 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: 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: 7846272
    Abstract: A treated austenitic steel and method for treating same includes an austenitic steel and a non-metal chemical element incorporated into a surface of the steel. The surface has a bi-layered structure of a compound layer at a top and an underlying diffusion layer, which protects said surface against hydrogen embrittlement.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: December 7, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventor: Thorsten Michler
  • Publication number: 20100200120
    Abstract: A conductive film comprises a phosphide particle coated film formed by attaching raw material particles including phosphide particles comprising a compound of Ti and/or Fe, and P to a surface of a substrate material. This conductive film exhibits good corrosion resistant conductivity, and can be easily formed at low costs because of comprising the phosphide particle coated film. A corrosion-resistant conduction film comprises an iron-containing titanium phosphide layer containing Ti, Fe and P as essential basic elements. A corrosion-resistant conduction material having this corrosion-resistant conduction film on a surface of a substrate exhibits good corrosion resistance or conductivity. This corrosion-resistant conduction material can be obtained, for example, by a process comprising a plating step of forming an Ni plating layer on a surface of a Ti-based material substrate and a nitriding step of applying nitriding treatment to the Ti-based material substrate after the plating step at not more than 880 deg.
    Type: Application
    Filed: January 29, 2010
    Publication date: August 12, 2010
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Toshio Horie, Gaku Kitahara, Nobuaki Suzuki, Fumio Shimizu, Takao Kobayashi, Ken-ichi Suzuki, Shigeki Oshima
  • Patent number: 7695573
    Abstract: A surface processing method and power transmission component includes transforming a surface region of a metal alloy into a hardened surface region at a temperature that is less than a heat treating temperature of the metal alloy. The metal alloy includes about 11.1 wt % Ni, about 13.4 wt % Co, about 3.0 wt % Cr, about 0.2 wt % C, and about 1.2 wt % Mo which reacts with the C to form a metal carbide precipitate of the form M2C. The surface processing temperature, vacuum pressure, precursor gas flow and ratio, and time of processing are controlled to provide a desirable hardened surface region having a gradual transition in nitrogen concentration.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: April 13, 2010
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Clark VanTine Cooper, Krassimir G. Marchev, Bill C. Giessen, Raymond C. Benn, Edward H. Bittner, Harsh Vinayak
  • Publication number: 20100055516
    Abstract: A method of providing a porous surface on a nickel substrate comprising treating the substrate with a flowing stream of gas comprising ammonia or hydrazine at a temperature of at least 4000 C, the resultant porous surface comprising pores which are substantially all interconnected and have access to the surface.
    Type: Application
    Filed: October 25, 2007
    Publication date: March 4, 2010
    Inventors: Geoffrey Mason, Bryan Buffham, Klaus Hellgardt, Paul Russell, David Richardson
  • Publication number: 20100037991
    Abstract: Low temperature carburization of a workpiece surface is accomplished faster by impregnating the surface with a diffusion promoter prior to or during the low temperature carburization process.
    Type: Application
    Filed: March 12, 2008
    Publication date: February 18, 2010
    Applicant: Swagelok Company
    Inventors: Sunniva R. Collins, William H. Glime, Gary W. Henrich, Andrew P. Marshall, Gerhard H. Schiroky, Peter C. Williams, Geroge R. Vraciu
  • Publication number: 20090324439
    Abstract: A method of forming a sputtering target and other metal articles having controlled oxygen and nitrogen content levels and the articles so formed are described. The method includes surface-nitriding a deoxidized metal powder and further includes consolidating the powder by a powder metallurgy technique. Preferred metal powders include, but are not limited to, valve metals, including tantalum, niobium, and alloys thereof.
    Type: Application
    Filed: September 2, 2009
    Publication date: December 31, 2009
    Applicant: CABOT CORPORATION
    Inventors: Christopher A. Michaluk, Shi Yuan, James Maguire
  • Patent number: 7601296
    Abstract: A method of forming a sputtering target and other metal articles having controlled oxygen and nitrogen content levels and the articles so formed are described. The method includes surface-nitriding a deoxidized metal powder and further includes consolidating the powder by a powder metallurgy technique. Preferred metal powders include, but are not limited to, valve metals, including tantalum, niobium, and alloys thereof.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: October 13, 2009
    Assignee: Cabot Corporation
    Inventors: Christopher A. Michaluk, Shi Yuan, James Maguire