Class 148/316 - Carburized or nitrided

Subclass of Class 148 - Metal treatment
Definition: Stock material wherein the surface of the material contains
No. of patents: 39
Last issue date: 11/06/2007

Number	Title	Issue Date
7291229	Method of surface treatment of titanium metal A method of carburizing treatment is proposed in which if carburizing is carried out at a low temperature, carbon will not turn amorphose and deposit on the surface of a titanium metal but reliably penetrate into between metallic atoms. It is a method of surface tre...	11/06/2007
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
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
6964686	Intervertebral disc replacement prosthesis An intervertebral disc prosthesis that comprises a deformable flexure with an axial cavity, the axial cavity extending along the axis of the flexure, and a slit defined in the perimeter surface of the flexure to provide flexibility to the disc member, the slit havin...	11/15/2005
6948247	Method for forming a bearing race for a cylindrical bearing A cylindrical roller bearing or needle roller bearing for use with a rolling raceway surface is subjected to a carbonitriding treatment to produce a layer containing 30 to 80% retained austenite in the vicinity of its surface that contacts a carburized layer of a ro...	09/27/2005
6935618	Valve component with multiple surface layers A sliding component, particularly a disk valve plate. The sliding component includes a multi-layer surface structure comprising a strengthening layer harder than the substrate material, and an amorphous diamond top layer. ...	08/30/2005
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
6443870	Toroidal-type continuously variable transmission The present toroidal-type continuously variable transmission comprises input and output disks coaxially disposed so as to be opposed to each other, and a pair of power roller bearings, each power roller bearing including an inner race, an outer race, and ...	09/03/2002
6348145	Chromized refractory steel, a process for its production and its uses in anti-coking applications Coated steel articles are described which exhibit anti-coking properties, and a process for producing such articles by depositing an anti-coking coating on a matrix constituted by a steel, in general a refractory steel. These articles comprise: a refracto...	02/19/2002
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
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
6196530	Method of manufacturing stabilizer for motor vehicles Stabilizer (1) for motor vehicles which has a toroidal cross section, and which is formed of several stabilizer sections that, together, create a U-shape having a pair of U-legs (2) connected by a U-back (3) via arcuately shaped transitional shoulder area...	03/06/2001
6165597	Selective case hardening processes at low temperature A selectively case hardened steel article by low temperature carburization includes a body made of a chromium bearing nickel or ferrous based alloy (for example, stainless steel), a first portion of the body having a first hardness characteristic, and a s...	12/26/2000
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
5997661	Rolling bearing A rotating shaft 4 is attached to an inner race 1, and an outer race 2 is fixed to a housing 5 so that the bearing is operated by the rotation of the rotating shaft 4. In this case, the inner race 1 is made to be the race on the rotating side, and the out...	12/07/1999
5989694	Rolling bearing Disclosed is a rolling bearing comprising races and rolling elements, in which at least one of the races and the rolling elements has at least one of a carbide and a carbonitride precipitated in a surface layer thereof, inclusive of a cutting allowance, w...	11/23/1999
5873950	Strengthenable ethylene pyrolysis alloy There is provided a nickel-base alloy with service enhanced strengthening properties. When exposed to ethylene pyrolysis conditions, namely a carbon containing environment and at temperatures of at least about 900° C., the alloy forms M6 C and...	02/23/1999
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
5472527	High pressure oxidation of precursor alloys A method for forming unsegregated metal oxide-silver composites includes preparing a precursor alloy comprising silver and precursor elements of a desired metal oxide and oxidizing the alloy under conditions of high oxygen activity selected to permit diff...	12/05/1995
5415704	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...	05/16/1995
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
5372655	Method for the treatment of alloy steels and refractory metals Method for the treatment of alloy steels and refractory metals such as Ti, Zr and Nb, especially for depassivation and subsequent thermochemical surface treatment in a process chamber (1, 2) under the action of pressure and temperature, wherein, in a firs...	12/13/1994
5368657	Gas atomization synthesis of refractory or intermetallic compounds and supersaturated solid solutions A metallic melt is atomized using a high pressure atomizing gas wherein the temperature of the melt and the composition of the atomizing gas are selected such that the gas and melt react in the atomization spray zone to form a refractory or intermetallic ...	11/29/1994
5334263	Substrate stabilization of diffusion aluminide coated nickel-based superalloys A superalloy article has a nickel-based superalloy substrate containing TCP-phase forming elements such as rhenium, chromium, tantalum and tungsten. A carbide precipitate-containing region is formed within the substrate extending to a carbide depth below ...	08/02/1994
5259885	Process for making ceramic/metal and ceramic/ceramic laminates by oxidation of a metal precursor A method of preparing a laminated ceramic. The method includes preparing a precursor having at least one noble metal element component and at least two non-noble metal elements. The precursor is exposed to a first environment to form an oxidized zone havi...	11/09/1993
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
5169597	Biocompatible low modulus titanium alloy for medical implants A biocompatible titanium alloy with low elastic modulus containing titanium, about 10-20 wt. % or 35 to about 50 wt. % niobium and up to 20 wt. % zirconium useful for fabricating of orthopedic implants. This invention relates generally to high strength, b...	12/08/1992
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
5068003	Wear-resistant titanium alloy and articles made thereof A wear-resistant titanium alloy containing titanium carbides which are crystallized and/or precipitated and are dispersed in the ଲ-phase matrix is disclosed. The alloy may further comprise ଱-phase and/or additional hard particles dispersed in ...	11/26/1991
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
4921025	Carburized low silicon steel article and process A process for forming a carburized steel article includes carburizing a steel material containing not more than 0.10% silicon and less than 1.1% chromium to form an austenitic surface matrix having a high density of carbides dispersed therein. After quenc...	05/01/1990
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
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
4568396	Wear improvement in titanium alloys by ion implantation A method of making titanium alloy more resistant to sliding wear and fretting fatigue comprising the steps of: implanting carbon ions with at least one energy onto titanium alloy until at least 1×1017 carbon ions/cm2 have fallen onto the...	02/04/1986
4465524	Titanium and its alloys Bodies made of titanium or its alloys, having surfaces liable to wear, have their wear resistance improved by coating such surfaces with a layer of a metal such as tin or aluminum which has been bombarded with ions of a light species such as nitrogen, car...	08/14/1984
4399168	Method of preparing coated cemented carbide product An improved process for the production of coated cemented carbide products is disclosed. A cemented carbide substrate is treated to form a metal carbide, nitride or carbonitride coating. The coated substrate is heat treated at a temperature close to or ne...	08/16/1983
4101703	Coated cemented carbide elements Cemented carbide elements with working faces bearing a thin multilayer or stratified coating of nonuniform composition of wear-resistant materials exhibit superior wear-resistance for improved performance and service life under severe service conditions a...	07/18/1978
4018631	Coated cemented carbide product Improved adherence of oxide coatings on cemented carbide substrate containing tungsten and cobalt is attained by forming on the substrate a coating selected from carbide, nitride, carbonitride and mixtures thereof, diffusing tungsten and cobalt from the s...	04/19/1977
3944443	Ultra high temperature chemical reactions with metals A method for treating metals and metal surfaces is disclosed. The method includes the use of a plasma gas generated by an induction plasma system. In one embodiment, a cutting tool, such as a saw blade or razor blade is passed into contact with the plasma...	03/16/1976

PatentStorm

Quotables

PatentStorm News

Class 148/316 - Carburized or nitrided