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7449043 |
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....
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7442338 |
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 reinforce...
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7438741 |
Cermets are provided in which the ceramic phase is selected from the group consisting of Cr 23 C 6 , Cr 7 C 3 , Cr 3 C 2 and mixtures thereof. The binder phase is selected from certain specified Ni/Cr alloys and certain Fe/Ni/Cr alloys....
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7427310 |
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 ...
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7413591 |
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 carbonitri...
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7407525 |
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 ...
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7384689 |
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 prese...
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7384443 |
Embodiments of the present invention include hybrid composite materials comprising a cemented carbide dispersed phase and a cemented carbide continuous phase. The contiguity ratio of the dispersed phase of embodiments may be less than or...
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7288132 |
Cermets are provided in which a substantially stoichiometric metal carbide ceramic phase along with a reprecipitated metal carbide phase, represented by the formula M x C y , is dispersed in a metal binder phase. In M x C y M is Cr, Fe,...
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7282078 |
A wear-resistant iron-based sintered contact material is provided which is sintered by powder sintering so as to have high density, high seizure resistance and wear resistance. A wear-resistant iron-based sintered composite contact compo...
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7179319 |
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...
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7141110 |
Erosion resistant coating processes and material improvements for line-of-sight applications. The erosion resistant coating composition includes nanostructured grains of tungsten carbide (WC) and/or submicron sized grains of WC embedded ...
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7128774 |
The present invention relates to a cutting tool insert for metal machining comprising tungsten carbide in a binder phase of tungsten or a tungsten alloy. The insert contains, in addition, W 2 C in an amount such that in the x-ray diffrac...
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7128773 |
A composite material includes a double cemented carbide and a coarse grain dopant, wherein the coarse grain is added in an amount sufficient to improve wear resistance of virgin double cemented carbide. The double cemented carbide may se...
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7097685 |
A cemented carbide comprises a binder phase consisting essentially of an iron family metal, a first hard phase consisting essentially of WC having a hexagonal crystal structure, and a second hard phase consisting essentially of one or mo...
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7094473 |
A wear-resistant iron-based sintered contact material is provided which is sintered by powder sintering so as to have high density, high seizure resistance and wear resistance. A wear-resistant iron-based sintered composite contact compo...
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7074253 |
Cermets are provided in which a substantially stoichiometric metal carbide ceramic phase along with a reprecipitated metal carbide phase, represented by the formula M x C y , is dispersed in a metal binder phase. In M x C y M is Cr, Fe,...
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7070643 |
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,...
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7063821 |
Apparatus for producing molybdenum carbide from a precursor material includes a supply of process gas and a furnace defining at least a first heating zone and a second heating zone. The furnace heats the first heating zone to a first tem...
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6921422 |
This invention relates to a ductile binder phase for use with AlMgB 14 and other hard materials. The ductile binder phase, a cobalt-manganese alloy, is used in appropriate quantities to tailor good hardness and reasonable fracture tough...
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6911063 |
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 ...
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6905779 |
A copper-based sliding material comprising sintered copper or sintered copper alloy, and 0.1 to 5 vol. % hard substance particles harder in hardness than said copper or copper alloy, said hard substance particles being substantially even...
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6878181 |
A cemented carbide with excellent properties for oil and gas applications regarding resistance to the combined erosion and corrosion synergistic effects at temperatures between −50 and 300° C. and toughness. This object has been achie...
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6852143 |
A turbo component for a turbocharger in which heat resistance, corrosion resistance, and wear resistance is superior, and in which the cost is further lowered, is provided. In the turbo component, the overall composition is, in ratio by ...
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6843824 |
A method of making tungsten carbide and a method of making a densified tungsten carbide-containing ceramic body with a transverse rupture strength greater than 300,000 psi are disclosed.
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6840978 |
A porous metal body having a foam structure of 500 μm or less in average pore diameter, wherein the skeleton is composed of an alloy primarily including Fe and Cr, and Cr carbide or FeCr carbide is uniformly dispersed in the texture. Th...
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6802883 |
An iron-based sintered alloy, which consists of from 0.5 to 5% of Ni, from 0.5 to 4% of Cr, from 0.5 to 2% of C, the balance being Fe and unavoidable impurities, and which has a micro-structure comprising an iron-based matrix containing ...
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6797369 |
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 tabl...
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6793875 |
A method for the synthesis of method for the manufacture of carbide cermet powders, comprises high energy ball milling a mixture of precursor powders and a carbon source, followed by annealing the milled powder mixture. The precursor pow...
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6790252 |
A process of making an article of a tungsten-carbide-cobalt alloy with or without an additive of one or more of tantalum, cobalt-nickel, nickel-tantalum, tantalum-carbide, titanium-carbide, niobium-carbide, chromium-carbide, titanium-nit...
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6782958 |
In one embodiment, a hardfacing composition for a drill bit, including a carbide phase including from about 50% to about 80% by weight of the hardfacing composition of a combination of 80 to 200 mesh macro-crystalline tungsten carbide an...
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6767416 |
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 select...
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6761750 |
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 cu...
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6723387 |
A thermal spray method for the fabrication of ceramic/metal and ceramic/ceramic hardcoating for wear applications. The method makes use of feedstock powder, composed of micron-scale aggregates of hard phase material particles that are ei...
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6682580 |
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 impr...
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6666288 |
The present invention relates to cutting tool insert consisting of a tungsten carbide based hard metal substrate and a coating. The hard metal consists of about 4-15 wt-% binder phase with face centered cubic structure and a composition ...
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6602312 |
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 ...
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6576036 |
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 h...
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6537343 |
A product having a chromium carbide based cemented carbide composition with a nickel and/or chromium based binder is disclosed. It possesses excellent corrosion resistance in combination with good strength and hardness/abrasion resistanc...
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6524364 |
A corrosion and oxidation resistant cemented carbide contains WC and 6-15 wt. % binder phase whereby the binder phase contains 8-12 wt. % of a corrosion resisting addition with an average WC grain size of 3-10 μm. Cemented carbide is ob...
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6500226 |
This disclosure features a process of making a two part drill bit insert, namely, a body portion of hard particles such as tungsten carbide particles mixed in an alloy binding the particles. The alloy preferably comprises 6% cobalt with ...
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6464748 |
The present invention relates to cemented carbide tools for coldforming and drawing operations. The cemented carbide comprises WC with an average grain of <1 μm and 0.5-4 weight-% binder phase consisting of Co and Ni, <0.5 wt-% Mo...
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6461401 |
A composite structural metal use, for example, in drill bit bodies is disclosed. The metal includes powdered tungsten carbide, and binder metal consisting of a composition by weight of manganese in a range of about zero to 25 percent, ni...
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6423112 |
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 be...
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6423111 |
A ball for a ball-point pen is provided comprising cemented carbide of WC—Cr 3 C 2 —Co where VC is contained as a solid solution in the Cr 3 C 2 —CO phase which is a binder of WC particles and wherein the mean diameter of the WC pa...
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6413293 |
The present invention relates to a method of making ultrafine WC—Co alloys from a well dispersed mixture of fine and non-agglomerated WC and Co powders, wherein the Co powders have a narrow grain size distribution wherein at least 80% ...
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6402802 |
Embodiments include a method for fabricating a nanograined component from a nanograined powder composition. A compact is formed from the nanograined powder composition and sufficient heat is applied to the compact to generate at least on...
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6399018 |
Solid objects are made by means of a novel multi-step forming, debinding, sintering and infiltrating process, using a metal-ceramic composition. In this process, the mixture is held for a period of time to degas and settle the powdered m...
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6387552 |
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 carbon...
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6387149 |
A metal porous body having a skeleton which has a foam structure, composed of an alloy composed mainly of Fe and Cr and includes a Cr carbide and/or FeCr carbide uniformly dispersed therein. The metal porous bodies are obtained by prepar...
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