Class 148/317 - Nitrided

Subclass of Class 148 - Metal treatment
Definition: Stock material wherein the surface of the material contains
No. of patents: 50
Last issue date: 11/02/2010

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Number	Title	Issue Date
7824507	Method for preparing nanostructured metal alloys having increased nitride content A method of producing high strength nanophase metal alloy powder by cryomilling metal powder under conditions which cause the formation of intrinsic nitrides, and of producing high strength metal articles by subjecting the nitrided cryomilled powder to thermo-mechan...	11/02/2010
7442225	High strength high toughness Mo alloy worked material and method for production thereof The present invention provides a worked molybdenum-alloy material that can be used at higher temperatures than at least temperatures at which known TZM alloys are used. A worked molybdenum-alloy material having high strength and high toughness includes at lea...	10/28/2008
7438769	Process for diffusing titanium and nitride into a material having a coating thereon A method for diffusing titanium and nitride into a base material having a coating thereon using conventional surface treatments or coatings. The method generally includes the steps of providing a base material having a coating thereon; providing a salt bath which in...	10/21/2008
7211346	Corrosion resistant metallic bipolar plate A corrosion resistant, electrically conductive component such as a bipolar plate for a PEM fuel cell includes 20–55% Cr, balance base metal such as Ni, Fe, or Co, the component having thereon a substantially external, continuous layer of chromium nitride. ...	05/01/2007
7077867	Prosthetic knee joint having at least one diamond articulation surface Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for man...	07/18/2006
7014720	Austenitic stainless steel tube excellent in steam oxidation resistance and a manufacturing method thereof The present invention provides an austenitic stainless steel tube with a uniform fine grained structure of regular grains, which is not changed to a coarse structure and the steam oxidation resistance is maintained even if the tube is subjected to a high temperature...	03/21/2006
7001672	Laser based metal deposition of implant structures A method of depositing a hard wear resistant surface onto a porous or non-porous base material of a medical implant. The medical implant device formed by a Laser Based Metal Deposition (LBMD) method. The porous material of the base promotes bone ingrowth allowing th...	02/21/2006
6982120	Hardened steel components and process of treating the same The invention relates to components made of steel, more particularly outer joint parts and inner joint parts of constant velocity joints, and to a process of heat treating such components made of steel. The heat treatment operation includes the process stages of nit...	01/03/2006
6589368	High melting point metal based alloy material having high toughness and strength The present invention provides a refractory-metal-based alloy material having a remarkably enhanced toughness and strength, by internally nitriding a nitride-forming metal element incorporated as a solid solution into an alloy worked piece, which has a pa...	07/08/2003
6554609	Nanotechnology for electrical devices Nanostructured non-stoichiometric non-equilibrium materials are disclosed. Novel electromagnetic materials and their applications are discussed. More specifically, the specifications teach the use of nanotechnology and nanostructured materials for develop...	04/29/2003
6468366	Surface nitriding member A nitriding portion made of aluminum nitride as a main ingredient having a high concentration region in which an element mentioned below is existent at a high concentration and a low concentration region in which the element existent at a low concentratio...	10/22/2002
6315840	Sliding member An object of the present invention is to provide a sliding member which is coated a film having superior wear resistance, superior scuffing resistance and a superior property not to increase an amount of wear on an opponent material (an opponent attacking...	11/13/2001
6267825	Process for treating metal workpieces A method for treating metal workpieces, including non-ferrous metal workpieces such as Titanium. The metal workpieces are heat soaked for a predetermined amount of time in a furnace at a predetermined temperature. An interstitial element is introduced int...	07/31/2001
6221173	Titanium or titanium alloy member and surface treatment method therefor Disposing the titanium or titanium alloy in a vacuum vessel, and applying annealing treatment thereto by heating (a heating process); feeding a mixed gas consisting primarily of nitrogen with a trace of oxygen component into the vessel, and heating inside...	04/24/2001
6214479	Covered member and method of producing the same This invention provides a covered member which possesses a high bond strength of a base material and a covering film, and has a smooth surface. The covered member comprises a base material and a covering film and the surface of the base material to be cov...	04/10/2001
6200685	Titanium molybdenum hafnium alloy This invention describes a corrosion-resistant, high-strength, low-modulus, titanium based alloy having about 5-11 weight percent Mo and about 6-15 weight percent Hf. This alloy is suitable for use in the fabrication of articles for medical and non-medica...	03/13/2001
6153023	Hardened metal product produced by shot peening with shot having high hardness A method for shot peening a hard metal product that has a hardened surface. The method includes projecting shot on the hardened surface of the hard metal product. The ratio of the Vickers hardness of the shot to that of the hardened surface is 0.8-1.6, an...	11/28/2000
6139984	Sliding member An object of the present invention is to provide a sliding member which is coated a film having superior wear resistance, superior scuffing resistance and a superior property not to increase an amount of wear on an opponent material (an opponent attacking...	10/31/2000
5989734	Aluminum product having metal diffusion layer, process for producing the same, and paste for metal diffusion treatment An aluminum product having the metal diffusion layer in the present invention has, on the surface thereof, a metal diffusion layer comprising aluminum and a diffusion metal which is diffused setting aluminum as a matrix and which includes at least one sel...	11/23/1999
5976715	Articles comprising magnetically soft thin films The invention is embodied in a soft magnetic thin film article comprising an iron--chromium-nitrogen (Fe--Cr--N) based alloy and methods for making such article. The soft magnetic thin film article is formed using an iron--chromium--nitrogen based alloy w...	11/02/1999
5743536	Piston ring A sliding member, in which the surface of a substrate is coated with a compound containing at least chromium nitride, wherein a columnar crystal structure is present in a tension fracture surface of the coating, the columns being aligned toward the coatin...	04/28/1998
5683523	Titanium alloy for super high vacuum vessels A light-weight super high vacuum vessel is disclosed in which a super high vacuum pressure over 10-10 Torr or over 10-11 Torr can be achieved using a simple evacuation system and/or with a sealing structure. The super high vacuum ves...	11/04/1997
5662745	Integral engine valves made from titanium alloy bars of specified microstructure Bars of titanium alloys suited for the manufacture of at least the stems (2), (3) of engine valves are mass-producible while maintaining good configurational and dimensional accuracies throughout the valve fabricating process and the wear-resistance impar...	09/02/1997
5645944	Application of molybdenum alloys The invention relates to the application of molybdenum alloys, which are superficially hardened by means of nitriding, for female dies and comparable construction components for extruding light and nonferrous metals. It is possible through the application...	07/08/1997
5514225	Case nitrided aluminum product, process for case nitriding the same, and nitriding agent for the same A case nitrided aluminum product is produced by contacting an aluminum product with a nitriding agent at a part of a surface thereof at least, and by nitriding the aluminum product at the surface with an ambient gas at a temperature of a melting point of ...	05/07/1996
5498302	Surface hardened biocompatible metallic medical implants This invention provides surface hardened, abrasion resistant high strength, biocompatible metal medical implants, in particular, titanium alloy implants which do not include any elements which have been shown or suggested as having short term or long term...	03/12/1996
5445683	Nickel alloy products with their surfaces nitrided and hardened The present invention relates to nickel alloy products with their surfaces nitrided and hardened which are formed by pressure casting nickel alloy material, and nitrided and hardened layers are formed in surface layers. Since the nitrided and hardened sur...	08/29/1995
5417776	Hard austenitic stainless steel screw The surface layer of a hard austenitic stainless steel screw is formed as nitrided layer and then is covered by a plating coat or a resin coat to give properties such as shortening the boring time as well as heightening the surface hardness of the screw i...	05/23/1995
5395461	Method of producing titanium material resistant to hydrogen absorption in aqueous hydrogen sulfide solution A method of producing a titanium material having enhanced resistance to hydrogen absorption in aqueous hydrogen sulfide solutions which comprises removing a layer of at least 0.5 μm depth from the surface of a titanium material that has been annealed aft...	03/07/1995
5385617	Ultralow yield strength steel An ultralow yield strength steel consisting of: from 0.01 to 0.25 wt % of hexagonal boron nitride particles having an average diameter of from 1 to 30 μm; and the balance consisting of iron and unavoidable impurities....	01/31/1995
5382305	Soft magnetic thin film The soft magnetic thin film of the invention has an atomic ratio composition of the formula: [(Fe1-y Niy)1-x Mx ]1-z Nz wherein M is at least one member selected from the group consisting of Mg, ...	01/17/1995
5252147	Modification of surface properties of copper-refractory metal alloys The surface properties of copper-refractory metal (CU-RF) alloy bodies are modified by heat treatments which cause the refractory metal to form a coating on the exterior surfaces of the alloy body. The alloys have a copper matrix with particles or dendrit...	10/12/1993
5215823	Process for forming solid lubricating film on iron-base alloy substrate and sliding member having the solid lubricating film In a process for forming a solid lubricating film on an iron-base substrate, an organic material having a vapor pressure of 10-4 Torr or less at room temperature is deposited on an iron-base alloy substrate in a vacuum atmosphere in a vacuum de...	06/01/1993
5187128	Process for preparing self-supporting bodies Self-supporting bodies are produced by reactive infiltration of a parent metal into a boron nitride material typically resulting in a body comprising a boron-containing compound, a nitrogen-containing compound and metal. The mass to be infiltrated may con...	02/16/1993
5160553	Cold-worked steel of high compressive strength and articles made thereof The invention concerns a cold-worked steel of high compressive strength for tools and parts simultaneously subjected to several stresses. The steel of the invention evinces a composition in % by weight of C: 0.6 to 1.5 Si: 0.2 to 1.6 Mn: 0.2 to 1.2 Cr: 5.0 to 10.0 ...	11/03/1992
5084795	Magnetic head and method of manufacturing the same A metal-in-gap type magnetic head having a small undulation of reproduction output caused by a pseudo-gap and method of manufacture thereof are provided, wherein the magnetic head employs as a back core a ferrite (particularly, a ferrite containing Sn) an...	01/28/1992
4978644	Process for preparing self-supporting bodies and products made thereby Self-supporting bodies are produced by reactive infiltration of a parent metal into a boron nitride material typically resulting in a body comprising a boron-containing compound, a nitrogen-containing compound and metal. The mass to be infiltrated may con...	12/18/1990
4908072	In-process formation of hard surface layer on Ti/Ti alloy having high resistance A process for producing a titanium material with excellent corrosion resistance, which comprises first applying a degree of cold working of 10% or more of the total working reduction while causing an oil to exist on the surface of the titanium material du...	03/13/1990
4836865	Magnetic nitride film The disclosed magnetic nitride T-M-N film (T is at least one metal selected from the group consisting of Fe, Co, Ni and Mn; M is at least one metal selected from the group consisting of Nb, Zr, Ti, Ta, Hf, Cr, W and Mo; N is nitrogen (N)) has excellent we...	06/06/1989
4799977	Graded multiphase oxycarburized and oxycarbonitrided material systems A graded material system comprising: a refractory metal alloy base having a major metal selected from the group consisting of Group V-B metals (columbium, tantalum and vanadium), and having at least one alloy metal selected from the group consisting of Gr...	01/24/1989

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Class 148/317 - Nitrided