Abstract: An ultra-hard composite material and a method for manufacturing the same, including mixing a metal carbide powder and a multi-element high-entropy alloy powder to form a mixture, green compacting the mixture, and sintering the mixture to form the ultra-hard composite material. The described multi-element high-entropy alloy consists of five to eleven principal elements, with every principal element occupying a 5 to 35 molar percentage of the alloy.

Abstract: There is disclosed a cemented carbide tool containing tungsten carbide, titanium carbide, nickel and cobalt, molybdenum and chromium. The composition of the materials provides a good resistance to corrosion as well as high hardness and wear resistance. These properties are particularly interesting for the manufacture of tools for coldforming operations. Cold forming tools made with these materials have steady performance over a long period of time.

Abstract: This invention relates to thermal spray coatings, powders useful in deposition of the thermal spray coatings, methods of producing the powders, and uses of the thermal spray coatings, for example, coating of piston rings and cylinder liners of internal combustion engines. The coatings of this invention are applied by thermal spray deposition of a powder. The powder contains bimetallic carbides of chromium and molybdenum dispersed in a matrix metal. The matrix metal contains nickel/chromium/molybdenum.

Abstract: An article includes a working portion including cemented carbide, and a heat sink portion in thermal communication with the working portion. The heat sink portion includes a heat sink material having a thermal conductivity greater than a thermal conductivity of the cemented carbide. Also disclosed are methods of making an article including a working portion comprising cemented carbide, and a heat sink portion in thermal communication with the working portion and including a heat sink material having a thermal conductivity that is greater than a thermal conductivity of the cemented carbide. The heat sink portion conducts heat from the working portion.

Abstract: A cermet insert having a structure composed of a hard phase and a binding phase and, as a sintered body composition, containing Ti, Nb and/or Ta, and W in a total amount of Ti in terms of carbonitride, Nb and/or Ta in terms of carbide and W in terms of carbide of 70 to 95 wt. % of an entirety of the microstructure, and containing W in terms of carbide in an amount of 15 to 35 wt. % of the entirety of the microstructure, the sintered body composition further containing Co and/or Ni. The hard phase has one or two or more of the phases: (1) a first hard phase of a core-having structure whose core portion contains a titanium carbonitride phase and a peripheral portion containing a (Ti, W, Ta/Nb)CN phase, (2) a second hard phase of a core-having structure whose core portion and peripheral portion both contain a (Ti, W, Ta/Nb)CN phase, and (3) a third hard phase of single-phase structure including a titanium cabonitride phase.

Abstract: A sintered sliding member comprises a back metal (21a) and a ferrous sintered sliding body (20) which is sintering-bonded to the back metal (21a). The ferrous sintered sliding body (20) has martensite phase having a solid soluble carbon concentration of 0.15 to 0.5 wt % and contains carbide in a content of 5 to 50% by volume. The sintered sliding member is excellent in abrasion resistance, seizing resistance and heat crack resistance.

Abstract: A method for the treatment of tungsten carbide is provided. The starting material contains tungsten carbide particles of a W—C system represented on a phase diagram showing a monophasic domain of a ? phase having a face-centered cubic structure, upwardly delimited by a liquidus line. The particles are subjected to a homogenization treatment in the monophasic domain, and may be subsequently melted to be spheroidized. They are then quenched to freeze at ambient temperature the monophased structure. Optionally, at least one alloying element may be added to the starting material to enlarge the monophasic domain, thereby increasing the hardenability of the monophased particles.

Abstract: The present invention relates to a WC—Co cemented carbide alloy. By adding an extremely small amount of Ti, V, Zr, Ta or Nb or a combination of these, a grain refined cemented carbide structure with less abnormal WC-grains has been obtained.

Abstract: Disclosed is a cemented carbide comprising 5 to 10 mass % of cobalt and/or nickel, and 0 to 10 mass % of at least one selected from a carbide (except for tungsten carbide), a nitride and a carbonitride of at least one selected from the group consisting of metals of groups 4, 5 and 6 of the Periodic Table, the balanced amount of tungsten carbide, a hard phase comprising mainly tungsten carbide particles, and containing ? particles of at least one selected from the carbide, the nitride and the carbonitride, and the hard phase being bonded through a binder phase comprising mainly cobalt and/or nickel, wherein a mean particle size of the tungsten carbide particles is 1 ?m or less, and the cemented carbide having a sea-island structure in which plural binder-phase-aggregated portions composed mainly of cobalt and/or nickel are scattered in the proportion of 10 to 70 area % based on the total area on the surface of the cemented carbide. The cemented carbide is excellent in wear resistance and fracture resistance.

Abstract: A cemented carbide body is 1-30% by mass of binder consisting of Co, Co/Ni, Co/Fe, Co/Ni/Fe or Ni/Fe and a hard material having a hexagonal WC phase and having a face-centered cubic phase of the form (M1, M2, M3)C or (M1, M2, M3)(C, N) or (M1, M2, M3)(O, C, N) where M1=Ti and/or Zr and M2=W and M3 optionally means none or one or a plurality of the elements Ta, Nb, Hf, Cr, Mo or V, wherein the proportion of the face-centered cubic phase based on the total mass is 2% to 97%, preferably 5 to 12% by mass, and the microstructure of the hexagonal phase and of the face-centered cubic phase has a mean grain size of between 0.2 ?m and 1 ?m, preferably ?0.9 ?m, and the mean grain sizes of the hexagonal phase and of the face-centered cubic phase differ at most by 30%.

Abstract: A method of preparing a functionally graded cemented tungsten carbide material via heat treating a sintered cemented tungsten carbide is disclosed and described. The heat treating process comprises at least a step that heats the sintered material to the multi-phase non-equilibrium temperature range in which multiple phases including solid tungsten carbide, liquid metal binder, and solid metal binder coexist. Additionally, the material, after the heat treating process comprises a surface layer with lower metal binder content than the nominal value of metal binder content of the bulk of the material.

Abstract: The present invention relates to a fine grained WC-Co cemented carbide. By adding an extremely small amount of Ti, V, Zr, Ta or Nb alone or in combinations, a grain refined cemented carbide structure with less abnormal WC-grains has been obtained.

Abstract: The present invention relates to a wear resistant iron-based powder, suitable for the production of pressed and sintered components, comprising 10-20% by weight of Cr, 0.5-5% by weight of Mo and 1-2% by weight of C. The powder is characterised in that it includes pre-alloyed water atomized iron-based powder particles and chromium carbide particles diffusion bonded onto said pre-alloyed powder particles. The invention also relates to a method of producing this powder.

Abstract: The present invention relates to a super-hard enhanced hard-metal comprising particulate hard material and a binder and at least one formation, the formation comprising a core cluster and a plurality of satellite clusters, spaced from, surrounding and smaller than the core cluster, and the core cluster and satellite clusters each comprising a plurality of contiguous super-hard particles.

Abstract: A kinetic energy penetrator is provided comprising a consolidated body of a metal nanoparticles phase comprising metal nanoparticles and a metal carbide nanoparticles phase comprising metal carbide nanoparticles. Methods for making a kinetic energy penetrator as well as material compositions comprising a consolidated body of a metal nanoparticles phase comprising metal nanoparticles and a metal carbide nanoparticles phase comprising metal carbide nanoparticles are also provided.

Abstract: The invention relates to a thermal spray feedstock composition that employs free flowing agglomerates formed from (a) a ceramic component that sublimes,(b) a metallic or semi-conductor material that does not sublime and (c) a binder. The invention also relates to a method for preparing the agglomerates and a method for preparing ceramic containing composite structures from the agglomerates.

Abstract: An annealed pre-alloyed water atomised iron-based powder suitable for the production of pressed and sintered components having high wear resistance is provided. The iron-based powder comprises 10-below 18% by weight of Cr, 0.5-5% by weight of each of at least one of Mo, W, V and Nb, and 0.5-2%, preferably 0.7-2% and most preferably 1-2% by weight of C. The powder has a matrix comprising less than 10% by weight of Cr, and comprises large M23C6-type carbides in combination with M7C3-type carbides. A method for production of the iron-based powder, a method for producing a pressed and sintered component having high wear resistance, and a component having high wear resistance are provided.

Abstract: Wear protection sheets containing hard material particles having a metallic shell and solder material particles selected from the group consisting of soft solders, hard solders and high-temperature solders, the use of the wear protection sheets and a process for producing them by tape casting are described.

Abstract: The present invention relates to a cemented carbide tool for the deep drawing operations, especially as the ironing dies, of the manufacturing of aluminum or steel beverage cans. The cemented carbide comprises WC with an ultra fine grain size, a binder phase of Co, and grain growth inhibitors (V and/or Cr), wherein the Co content is from about 5 to about 10 wt-%, and with a specific relation between HV30 and cobalt content.

Abstract: Method of producing a sintered body comprising the steps of mixing one or more powders forming hard constituents with powders forming a binder phase comprising cobalt powder where the cobalt powder comprises cobalt having mainly a fcc-structure defined as the peak height ratio between the Co-fcc(200)/Co-hcp(101) being greater than or equal to about 3/2, as measured between the baseline and maximum peak height, measured by XRD with a 2?/? focusing geometry and Cu-K? radiation. The present invention also relates to a ready-to-press powder comprising cobalt having mainly a fcc-structure and where the cobalt powder has a grain size (FSSS) of from about 0.2 to about 2.9 ?m. The present invention also relates to sintered bodies made according to the method. The sintered bodied according to the present invention have reduced porosity and less crack formation.

Abstract: A method for manufacturing functionally graded cemented tungsten carbide with hard and wear-resistant surface and tough core is described. The said functionally graded cemented tungsten carbide (WC—Co) has a surface layer having a reduced amount of cobalt. Such a hard surface and tough core structure is an example of functionally graded materials in which mechanical properties are optimized by the unique combination of wear-resistance and toughness. WC—Co with reduced-cobalt surface layer may be fabricated through a carburization heat treatment process following conventional liquid phase sintering. The graded WC—Co thus obtained contains no brittle ? phase.

Abstract: An abrasive wear-resistant material includes a matrix and sintered and cast tungsten carbide granules. A device for use in drilling subterranean formations includes a first structure secured to a second structure with a bonding material. An abrasive wear-resistant material covers the bonding material. The first structure may include a drill bit body and the second structure may include a cutting element. A method for applying an abrasive wear-resistant material to a drill bit includes providing a bit, mixing sintered and cast tungsten carbide granules in a matrix material to provide a pre-application material, heating the pre-application material to melt the matrix material, applying the pre-application material to the bit, and solidifying the material. A method for securing a cutting element to a bit body includes providing an abrasive wear-resistant material to a surface of a drill bit that covers a brazing alloy disposed between the cutting element and the bit body.

Abstract: The present invention is a method for producing functionally graded materials that contain a hard phase that is embedded in a metal matrix phase. The material have a continuous gradient of a matrix metal phase. An example of these types of materials include functionally graded cemented tungsten carbide (the hard phase) that has a continuous gradient of cobalt (the matrix metal) from one reference position, for example, one surface of a part, to another reference position, for example, the opposite surface of the part or within the part. The functionally graded materials are sintered via a liquid phase sintering (LPS) technique. In order to achieve the desired continuous gradient of the matrix metal, an initial gradient of one of the chemical elements of the hard phase is designed and built into the part prior to liquid phase sintering.

Abstract: The present invention includes consolidated hard materials, methods for producing them, and industrial drilling and cutting applications for them. A consolidated hard material may be produced using hard particles such as B4C or carbides or borides of W, Ti, Mo, Nb, V, Hf, Ta, Zr, and Cr in combination with an iron-based, nickel-based, nickel and iron-based, iron and cobalt-based, aluminum-based, copper-based, magnesium-based, or titanium-based alloy for the binder material. Commercially pure elements such as aluminum, copper, magnesium, titanium, iron, or nickel may also be used for the binder material. The mixture of the hard particles and the binder material may be consolidated at a temperature below the liquidus temperature of the binder material using a technique such as rapid omnidirectional compaction (ROC), the CERACON® process, or hot isostatic pressing (HIP). After sintering, the consolidated hard material may be treated to alter its material properties.

Abstract: The invention is suitable for the manufacture of flat or shaped titanium matrix composite articles having improved mechanical properties such as lightweight plates and sheets for aircraft and automotive applications, etc. The method for manufacturing TMCC is comprised of the following steps: (a) preparing a basic powdered blend containing matrix alloy or titanium powders, dispersing ceramic and/or intermetallic powders, and powders of said complex carbide- and/or silicide particles, (b) preparing the Al—V master alloy containing ?5 wt. % of iron, (c) preparing the Al—V—Fe master alloy fine powder having a particle size of ?20 ?m, (d) mixing the basic powdered blend with the master alloy powder to obtain a chemical composition of TMCC, (e) compacting the powder mixture at room temperature, (f) sintering at the temperature which provides at least partial dissolution of dispersed powders, (g) forging at 1500-2300° F., and (h) cooling.

Abstract: A hardfacing composition for a drill bit, including a carbide phase comprising from about 50% to about 75% by weight of the hardfacing composition of a combination of 16 to 40 mesh cemented tungsten carbide and 80 to 200 mesh super dense tungsten carbide cobalt particles, wherein about 5% to about 50% by weight of the carbide phase comprises the super dense tungsten carbide cobalt particles, and a binder alloy including about 25% to about 50% by weight of the hardfacing composition.

Abstract: A new composition for forming a matrix body which includes spherical sintered tungsten carbide and an infiltration binder including one or more metals or alloys is disclosed. In some embodiments, the composition may include a Group VIIIB metal selected from one of Ni, Co, Fe, and alloys thereof. Moreover, the composition may also include cast tungsten carbide. In addition, the composition may also include carburized tungsten carbide.

Abstract: The present invention relates to cemented carbide for steel tire cord drawing operations. The cemented carbide comprises WC with an ultra fine grain size and greater than 5 and less than 10 wt-% Co, including grain growth inhibitors (V and/or Cr) and with a specific relation between HV30 and cobalt content.

Abstract: Provided are a composite wear-resistant member which can be manufactured with a lowered sintering temperature, and thus can prevent the carbonization of a material around super hard particles such as diamond; and a method for manufacturing the member. The member, characterized in that it comprises hard particles comprising diamond particles and WC particles and an iron group metal containing phosphorus as a binding material, wherein the content of phosphorus is 0.01 to 2.0 wt % relative to the total weight of the WC particles and the binding material.

Abstract: A macroscopic composite sintered powder metal article including a first region including cemented hard particles, for example, cemented carbide. The article includes a second region including one of a metal and a metallic alloy selected from the group consisting of a steel, nickel, a nickel alloy, titanium, a titanium alloy, molybdenum, a molybdenum alloy, cobalt, a cobalt alloy, tungsten, and a tungsten alloy. The first region is metallurgically bonded to the second region, and the second region has a thickness of greater than 100 microns. A method of making a macroscopic composite sintered powder metal article is also disclosed, herein. The method includes co-press and sintering a first metal powder including hard particles and a powder binder and a second metal powder including the metal or metal alloy.

Abstract: The present invention relates to particle reinforced noble metal matrix composites and a method of making the same. The composites include a noble metal such as silver, gold, and alloys thereof, as a base or matrix, and a particle reinforced filler material, such as a carbide. A pressureless infrared heating, or superheating, process is used to produce the particle reinforced noble metal matrix composites thereby providing a composite with at least sufficient hardness, i.e. wear resistance, and/or low resistivity. The composites may be used in the jewelry industry, such as for making watches, rings, and other jewelry, and/or in the power, automobile, and aircraft industries, such as for making electrical contact materials.

Abstract: An earth-boring drill bit having a bit body with a cutting component formed from a tungsten carbide composite material is disclosed. The composite material includes a binder and tungsten carbide crystals comprising sintered pellets. The composite material may be used as a hardfacing on the body and/or cutting elements, or be used to form portions or all of the body and cutting elements. The pellets may be formed with a single mode or multi-modal size distribution of the crystals.

Abstract: The invention relates to a method of making cemented carbides having surfaces free free of detrimental binder phase layer. This is achieved by the inclusion of controlled amounts of carbonitride in the carbide composition. The invention also relates to the cemented carbides so formed.

Abstract: There is disclosed a fine grained cutting tool insert consisting of a cemented carbide substrate and a coating. The cemented carbide substrate comprises WC, binder phase, and vanadium containing cubic carbide phase with a binder phase enriched surface zone essentially free of cubic carbide phase.

Abstract: A cutting tool comprised of a cemented carbide is provided. The cemented carbide is consisted of a composition including: a predetermined amount of at least one selected from specific carbide, nitride, and carbon nitride, except for cobalt and niobium; 0.01 to 0.08 mass % of oxygen; and the rest consisted of tungsten carbide and unavoidable impurities. The cemented carbide is further made up of a structure in which a tungsten carbide phase and a B1-type solid solution phase being expressed by M(CNO) or M(CO) where “M” is at least one selected from the group consisting of metals of the group IV, V, and VI in the periodic table, containing niobium as being essential, and containing oxygen at a rate of 1 to 4 atomic % are bound by a binder phase composed mainly of the cobalt. This achieves the cutting tool having a long tool life in high-speed interrupted cutting.

Abstract: The present invention includes consolidated hard materials, methods for producing them, and industrial drilling and cutting applications for them. A consolidated hard material may be produced using hard particles such as B4C or carbides or borides of W, Ti, Mo, Nb, V, Hf, Ta, Zr, and Cr in combination with an iron-based, nickel-based, nickel and iron-based, iron and cobalt-based, aluminum-based, copper-based, magnesium-based, or titanium-based alloy for the binder material. Commercially pure elements such as aluminum, copper, magnesium, titanium, iron, or nickel may also be used for the binder material. The mixture of the hard particles and the binder material may be consolidated at a temperature below the liquidus temperature of the binder material using a technique such as rapid omnidirectional compaction (ROC), the CERACON™ process, or hot ecstatic pressing (HIP). After sintering, the consolidated hard material may be treated to alter its material properties.

Abstract: A liquid for the preparation of powder mixtures on the basis of hard metals, comprising water and an inhibitor, wherein the inhibitor is in the form of at least one of the following materials: polyvinyllactam or wax emulsion, or the inhibitor is in the form of at least one of the following materials: carboxylic acid, amines or their derivatives.

Abstract: An earth-boring drill bit having a bit body with a cutting component formed from a tungsten carbide composite material is disclosed. The composite material includes a binder and tungsten carbide crystals comprising sintered pellets. The composite material may be used as a hardfacing on the body and/or cutting elements, or be used to form portions or all of the body and cutting elements. The pellets may be formed with a single mode or multi-modal size distribution of the crystals.

Abstract: The disclosed is an ultra-hard composite material. The method for manufacturing the ultra-hard composite material includes mixing a metal carbide powder and a multi-element high-entropy alloy powder to form a mixture, green compacting the mixture, and sintering the mixture to form the ultra-hard composite material. The described multi-element high-entropy alloy consists of five to eleven principal elements, with every principal element occupying a 5 to 35 molar percentage of the alloy.

Abstract: Cermets are provided in which the ceramic phase is selected from the group consisting of Cr23C6, Cr7C3, Cr3C2 and mixtures thereof. The binder phase is selected from certain specified Ni/Cr alloys and certain Fe/Ni/Cr alloys. These cermets are particularly useful in protecting surfaces from erosion at high temperatures.

Abstract: A cemented carbide tool comprising hard constituents in a binder phase of Co and/or Ni and at least one surface portion and an interior portion in which surface portion the grain size is smaller than in the interior portion is disclosed. The surface portion with the fine grain size has a lower binder phase content than the interior portion. A method to form the cemented carbide cutting tool is also disclosed.

Abstract: The present invention develops a manufacture method, via conventional liquid metallurgy, of finished and semi-finished metallic parts as casting, ingot, blooms and slabs in alloys base Fe, base Ni and base Co, microstructurally reinforced with complex molybdenum and titanium carbide particles, by means of their previous elaboration and latter addition to the molten alloy in the melting furnace. Then, when the alloy solidifies, they are inserted and distributed within the grains of the base metallic matrix, enhancing their mechanical properties and behavior at room as well as at high temperatures.

Abstract: Hardmetal compositions each including hard particles having a first material and a binder matrix having a second, different material comprising rhenium or a Ni-based superalloy. A two-step sintering process may be used to fabricate such hardmetals at relatively low sintering temperatures in the solid-state phase to produce substantially fully-densified hardmetals.

Abstract: Cermets are provided in which the ceramic phase is selected from the group consisting of Cr23C6, Cr7C3, Cr3C2 and mixtures thereof. The binder phase is selected from certain specified Ni/Cr alloys and certain Fe/Ni/Cr alloys. These cermets are particularly useful in protecting surfaces from erosion at high temperatures.

Abstract: A cemented carbide cutting tool insert/button for mining and construction comprising hard constituents in a binder phase of Co and/or Ni and at least one surface portion and an interior portion in which surface portion the grain size is smaller than in the interior portion is disclosed. The surface portion with the smaller grain size has a lower binder phase content than the interior portion. A method to form the cemented carbide cutting tool insert/button is also disclosed.

Abstract: The present invention includes consolidated hard materials, methods for producing them, and industrial drilling and cutting applications for them. A consolidated hard material may be produced using hard particles such as B4C or carbides or borides of W, Ti, Mo, Nb, V, Hf, Ta, Zr, and Cr in combination with an iron-based, nickel-based, nickel and iron-based, iron and cobalt-based, aluminum-based, copper-based, magnesium-based, or titanium-based alloy for the binder material. Commercially pure elements such as aluminum, copper, magnesium, titanium, iron, or nickel may also be used for the binder material. The mixture of the hard particles and the binder material may be consolidated at a temperature below the liquidus temperature of the binder material using a technique such as rapid omnidirectional compaction (ROC), the Ceracon™ process, or hot isostatic pressing (HIP). After sintering, the consolidated hard material may be treated to alter its material properties.

Abstract: There is disclosed a cemented carbide tool containing tungsten carbide, titanium carbide, nickel and cobalt, molybdenum and chromium. The composition of the materials provides a good resistance to corrosion as well as high hardness and wear resistance. These properties are particularly interesting for the manufacture of tools for coldforming operations. Cold forming tools made with these materials have steady performance over a long period of time.

Abstract: The throw-away tip has a shape of substantially flat plate, comprising from 1 to 30% by weight of binder phase comprising at least one kind of Co and Ni, and 70 to 99% by weight of carbonitride phase comprising composite metal carbonitride of Ti and one or more kind other than Ti among metals of groups 4a, 5a and 6a of the Periodic Table, wherein the mean grain size of the carbonitride phase is 1.5 ?m or less, while flexural strength test pieces which are cut out of ten throw-away tips including the side face thereof show flexural strength with a Weibull coefficient of 5 or higher. Throw-away tips having fine carbonitride phase structure and high cutting performance can be made with less variance among individual throw-away tips.

Abstract: 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 has a fracture toughness of at least about 18 ksi(in)0.5 and a wear number of at least about 1.8. In a particular example, the wear resistant material has a fracture toughness of at least about 20 ksi(in)0.5. A down hole cutting tool incorporating such cutting elements is also provided.

Abstract: The present invention relates to a method of making a cemented carbide comprising WC, 6-12 wt. % Co and 0.1-0.7 wt. % Cr, wherein the WC-grains are coated with Cr prior to mixing and no milling takes place during the mixing step. As a result a cemented carbide with improved properties is obtained.