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| Number | Title | Issue Date |
| 7879129 | Wear part formed of a diamond-containing composite material, and production method A wear part is formed of a diamond-containing composite material with 40 to 90% by volume of diamond grains, 0.001 to 12% by volume of carbidic phase, formed from one or more elements from the group Si, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, B, Sc, Y and lanthanides and ... | 02/01/2011 |
| 7407525 | Fracture and wear resistant compounds and down hole cutting tools Fracture and wear resistant cutting elements are provided. Examples include a cutting element formed of a wear resistant material having a binder composition and a coarse grain size such that the portion of the cutting element formed of the wear resistant material h... | 08/05/2008 |
| 7384689 | Cemented carbide body According to the present invention there is now provided a body cemented carbide provided with at least one wear resistant layer, which body contains a toughness increasing surface zone. Increase in toughness is obtained due to the presence of a surface zone having ... | 06/10/2008 |
| 7326273 | Multi-element ceramic powder and method for preparation thereof, and sintered compact and method for preparation thereof After an alloy powder including W, Cr, at least one of Ti, Zr, and Hf, and at least one of V, Nb, and Ta is produced, the alloy powder, a powdery carbon material, and a catalyst are heat-treated in the presence of a nitrogen gas. The alloy powder is carbonitrided in... | 02/05/2008 |
| 7288132 | Advanced erosion resistant carbide cermets with superior high temperature corrosion resistance Cermets are provided in which a substantially stoichiometric metal carbide ceramic phase along with a reprecipitated metal carbide phase, represented by the formula MxCy, is dispersed in a metal binder phase. In MxCy M is ... | 10/30/2007 |
| 7267292 | Method for producing fine alumina particles using multi-carbide grinding media Grinding media, including shaped media such as spheres or rods ranging in size from about 0.5 micron to 100 mm in diameter, are formed from a multi-carbide material consisting essentially of two or more carbide-forming elements and carbon, with or without carbide-fo... | 09/11/2007 |
| 7220480 | Cemented carbide and method of making the same A cemented carbide including WC, a binder phase based on Co, Ni or Fe, and gamma phase, in which said gamma phase has an average grain size | 05/22/2007 |
| 7213776 | Method of making particles of an intermetallic compound Grinding media, including shaped media such as spheres or rods ranging in size from about 0.5 micron to 100 mm in diameter, are formed from a multi-carbide material consisting essentially of two or more carbide-forming elements and carbon, with or without carbide-fo... | 05/08/2007 |
| 7179319 | Fine grained sintered cemented carbide, process for manufacturing and use thereof The invention proposes a fine grained sintered cemented carbide containing chromium and based on WC and a binder based on Co or CoNiFe, and having at least one additional phase comprising at least one carbide or mixed carbide of tantalum. For improving the high-temp... | 02/20/2007 |
| 7163657 | Cemented carbide body containing zirconium and niobium and method of making the same A sintered cemented carbide body (e.g., a cutting tool) and a method of making the same. The sintered cemented carbide body includes tungsten carbide, a binder phase of at least one metal of the iron group or an alloy thereof, and one or more solid solution phases. ... | 01/16/2007 |
| 7074253 | Advanced erosion resistant carbide cermets with superior high temperature corrosion resistance Cermets are provided in which a substantially stoichiometric metal carbide ceramic phase along with a reprecipitated metal carbide phase, represented by the formula MxCy, is dispersed in a metal binder phase. In MxCy M is ... | 07/11/2006 |
| 7070643 | Compositionally graded sintered alloy and method of producing the same There is disclosed a compositionally graded sintered alloy which comprises: 1 to 40% by weight of a iron group metal; 0.1 to 10% by weight of at least one type of a specific metal element selected from the group consisting of Cr, Au, Ge, Cu; Sn, Al, Ga, Ag, In, Mn a... | 07/04/2006 |
| 7001443 | Method for producing a metallic alloy by the oxidation and chemical reduction of gaseous non-oxide precursor compounds A metallic alloy is prepared from a gaseous mixture of at least two non-oxide precursor compounds, wherein the non-oxide precursor compounds collectively comprise the metallic constituents. The mixture of the non-oxide precursor compounds is oxidized to form a solid... | 02/21/2006 |
| 6921510 | Method for preparing an article having a dispersoid distributed in a metallic matrix An article has a metallic matrix made of its constituent elements with a dispersoid distributed therein. The article is prepared by furnishing at least one nonmetallic matrix precursor compound. All of the nonmetallic matrix precursor compounds collectively include ... | 07/26/2005 |
| 6872234 | Cutting member The cutting member comprises WC, two or more solid solutions of WC and compounds selected from carbides, nitrides and carbonitrides of metals of the groups 4a, 5a and 6a in the Periodic Table, and at least one metal of the iron group; and at least one of the two or ... | 03/29/2005 |
| 6869460 | Cemented carbide article having binder gradient and process for producing the same An eta-phase-free cemented carbide insert with improved surface hardness and wear resistance containing WC, and possibly cubic phases of a carbide and/or carbonitride, in a binder phase of Co, Ni, Fe or a combination thereof, with a binder phase gradient in the surf... | 03/22/2005 |
| 6797369 | Cemented carbide and cutting tool There is provided a cemented carbide comprising a hard phase component which comprises a tungsten carbide (WC) and at least one selected from carbides, nitrides and carbonitrides of metals of the groups 4a, 5a and 6a in the periodic table; and a binder phase compone... | 09/28/2004 |
| 6767416 | Corrosion resistant, high strength alloy and a method for manufacturing the same A corrosion resistant, high strength austenitic stainless steel consisting of 1.0% or less of Si, 2.0% or less of Mn, 0.5% or less of O, 7 to 30% of Ni, 14 to 26% of Cr, 0.3% or less of combination of C and N, at least one element selected from the group consisting ... | 07/27/2004 |
| 6761750 | Cemented carbide with binder phase enriched surface zone A cutting tool insert has a cemented carbide substrate and a coating. The cemented carbide substrate includes 73-93 wt % WC, 4-12 wt % binder phase, and cubic carbide phase with a binder phase enriched surface zone essentially free of cubic carbide phase. The cubic ... | 07/13/2004 |
| 6682580 | Matrix powder for the production of bodies or components for wear-resistant applications and a component produced therefrom A matrix powder for the production of components for wear-resistant applications by forming the matrix powder, along with an infiltrant, into a matrix, and and a wear-resistant component produced therefrom are presented. In order to improve mechanical pro... | 01/27/2004 |
| 6655478 | Fracture and wear resistant rock bits A fracture and wear resistant rock bit is disclosed, which includes a bit body, and at least one roller cone disposed on the bit body adapted such that at least one row of cutting elements disposed on the at least one roller cone defines a gage row. At le... | 12/02/2003 |
| 6602312 | Seal rings for potable water applications A cemented carbide seal ring has at least one hard phase in a binder phase based on Co, Ni and Fe which results in a content Fe, Ni and Cr of less than 50 μg/l of each in a leach test with deionized water at 85° C. performed according to the requirement... | 08/05/2003 |
| 6576036 | Grain growth inhibitor for superfine materials A superfine material made by incorporation of an inorganic polymer precursor of a grain growth inhibitor into intermediates useful for the production of superfine materials. The precursor/nanostructured material composite is optionally heat treated at a t... | 06/10/2003 |
| 6387552 | TiCN-based cermet A TiCN-based cermet comprises 5-25 weight % of a binder phase mainly composed of Co and/or Ni, the balance being substantially a hard phase and inevitable impurities, the hard phase being mainly composed of carbide, nitride and/or carbonitride and contain... | 05/14/2002 |
| 6372012 | Superhard filler hardmetal including a method of making A superhard filler hardmetal having a superhard material filler, binder metal or matrix and in some instances at least a first hard component is disclosed. The superhard filler hardmetal has a porosity rating of substantially A06, B00, C00 or better and m... | 04/16/2002 |
| 6338907 | Abrasive tool The invention relates to an abrasive tool comprising a support body and at least one abrasive element connected thereto. Said abrasive element has an abrasive grain which is joined by a sintered metal. The sintered metal used for joining is copper-coated ... | 01/15/2002 |
| 6299992 | Method of making cemented carbide with binder phase enriched surface zone The present invention relates to method of making a cemented carbide insert, comprising a cemented carbide substrate and a coating. The substrate contains WC and cubic carbonitride phase in a binder phase based of Co and/or Ni and has a binder phase enric... | 10/09/2001 |
| 6299658 | Cemented carbide, manufacturing method thereof and cemented carbide tool In a cemented carbide, at least one compound 3 including a carbide, a nitride or carbo-nitride of at least one component selected from IVa, Va and VIa group elements or a solid solution thereof exists in at least some WC crystal grains 1. Preferably the c... | 10/09/2001 |
| 6277774 | Grain growth inhibitor for superfine materials A method comprising incorporation of an inorganic polymer precursor of a grain growth inhibitor into superfine materials or intermediates useful for the production of superfine materials. The precursor/nanostructured material composite is optionally heat ... | 08/21/2001 |
| 6261329 | Diamond sintered body having high strength and high wear resistance, and tool including the same A diamond sintered body having high wear resistance, chipping resistance, shock resistance and thermal conductivity is provided. The diamond sintered body includes sintered diamond particles and a sintering aid as the remainder. The content of the sintere... | 07/17/2001 |
| 6241799 | Corrosion resistant cemented carbide The present invention discloses a sintered cemented carbide alloy with excellent corrosion and oxidation resistance. The alloy comprises 70-98 weight-% hard material essentially comprising WC in a monophase binder phase. It has been found that by the use ... | 06/05/2001 |
| 6235129 | Hard magnetic material A hard magnetic material contains Co as a main component, at least one element Q of P, C, Si and B, and Sm, and an amorphous phase and a fine crystalline phase. The texture of the hard magnetic material contains 50% by volume or more of fine crystalline p... | 05/22/2001 |
| 6228484 | Composite body, especially for a cutting tool A composite body of a microwave sintered composition of a cermet or hard metal as a modified surface layer which can promote the microwave sintering and can be of a thickness of 0.01 to 1 mm with a density gradually decreasingly inwardly or a thickness up... | 05/08/2001 |
| 6193777 | Titanium-based carbonitride alloy with nitrided surface zone An uncoated titanium-based carbonitride cutting tool insert with superior plastic deformation resistance and wear resistance is provided. This is accomplished by heat treating the material in nitrogen atmosphere under conditions to obtain a nitrogen rich ... | 02/27/2001 |
| 6126709 | Cemented carbide body with improved high temperature and thermomechanical properties There is now provided a cemented carbide grade for rock excavation purposes with 88-96 weight % WC, preferably 91-95% weight % WC, with a binder phase consisting of only cobalt or cobalt and nickel, with a maximum of 25% of the binder being Ni, possibly w... | 10/03/2000 |
| 6124040 | Composite and process for the production thereof The invention concerns composites substantially consisting of: a cermet material having a binder metal phase of between 5 and 30 mass % and the remainder comprising at least one carbon nitride phase; or a hard metal with a hard material phase of between 7... | 09/26/2000 |
| 6086980 | Metal working drill/endmill blank and its method of manufacture A cemented carbide drill/endmill blank and method of manufacture thereof wherein the drill/endmill includes a core and a surrounding tube with improved technological properties. The difference in Co-content between the core and tube is 1-10 wt-% units and... | 07/11/2000 |
| 6086650 | Cemented carbide for oil and gas applications The present invention relates to a cemented carbide with excellent properties for oil and gas applications including resistance to the combined erosion and corrosion synergistic effects at temperatures between -50 and 300° C., preferably 0-100° C. The c... | 07/11/2000 |
| 6045909 | Orthopaedic wires and cables and methods of making same Orthopaedic wires, cables, and methods of making them are based on the discovery that, in clinical orthopaedic applications, material toughness and fatigue strength are as important or more important than ultimate tensile strength. The wires and cables of... | 04/04/2000 |
| 6037287 | Laser clad pot roll sleeves and bushings for galvanizing baths A wear resistant coating for journals, journal sleeves and bushings on submerged rolls in a molten metal coating bath, comprising a laser-melted tungsten carbide containing overlay.... | 03/14/2000 |
