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7601196 |
Alloy powder for forming hard phase and ferriferous mixed powder using the same, and manufacturing method for wear resistant sintered alloy and wear resistant sintered alloy
Alloy powder for forming a hard phase for a valve seat material having excellent high temperature wear resistance. The overall composition is consisted of Mo: 48 to 60 mass %, Cr: 3 to 12 mass %...
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7585459 |
Method of preparing iron-based components
The present invention concerns a process for the preparation of high density green compacts comprising the steps of providing an iron-based powder essentially free from fine particles; optionally...
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7553350 |
High-strength and highly-wear-resistant sintered diamond object and manufacturing method of the same
A high-strength and highly-wear-resistant sintered diamond object according to the present invention includes sintered diamond particle having an average particle size of not larger than 2 μm and...
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7531020 |
Heat sink made from diamond-copper composite material containing boron, and method of producing a heat sink
A heat sink that is particularly suitable for semiconductor components is made from a diamond-containing composite material. In addition to a diamond fraction amounting to 40-90% by volume, the...
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7479469 |
Electrode catalyst fine particles, dispersion of the same, and process for producing the dispersion
Provided is a process for producing electrode catalyst fine particles capable of affording formed catalysts such as membranes excellent in uniformity and strength and also employable as catalyst to...
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7473296 |
Wear-resistant sintered contact material, wear-resistant sintered composite contact component and method of producing the same
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...
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7390344 |
Metal graphite material and production method thereof
Metal graphite material including a molded body having a collectivity of graphite particles and copper particles comprises graphite and copper as main elements, the copper particles including...
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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...
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7279023 |
High thermal conductivity metal matrix composites
Discontinuous diamond particulate containing metal matrix composites of high thermal conductivity and methods for producing these composites are provided. The manufacturing method includes...
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7273508 |
Iron-based sintered alloy material for valve seat
An iron-based sintered alloy material for a valve seat having improved wear resistance and reduced opposite aggressibility to a mating valve. The iron-based sintered alloy material contains 10% to...
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7241327 |
Iron-based sintered alloy with dispersed hard particles
An iron-based sintered alloy having improved thermal and mechanical strength is provided. The iron-based sintered alloy with dispersed hard particles comprises: a matrix comprising, by weight, 0.4...
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7211125 |
Alloyed steel powder with improved degree of sintering for metal injection molding and sintered body
An alloyed steel powder for metal injection molding that eliminates the problems of decreased product strength and difficulty of temperature control which exist in conventional alloys for sintering...
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7175686 |
Erosion-corrosion resistant nitride cermets
The invention includes a cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and a binder phase (RS) wherein,
P is a metal selected from the group consisting of...
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7163569 |
Raw or granulated powder for sintering, and their sintered compacts
An object of the present invention is to provide a low-alloyed steel powder for sintering that can yield a sintered compact with high density and uniform characteristics, and to provide a sintered...
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7071258 |
Nano-scaled graphene plates
A nano-scaled graphene plate material and a process for producing this material. The material comprises a sheet of graphite plane or a multiplicity of sheets of graphite plane. The graphite plane...
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7070635 |
Self sharpening polycrystalline diamond compact with high impact resistance
A polycrystalline diamond compact for use in cutting operations with a renewable sharp cutting edge, high abrasion resistance and high impact strength. The polycrystalline diamond is a composite...
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7014677 |
Iron based sintered body excellent in enveloped casting property in light metal alloy and method for producing the same
The object of the invention is to provide an iron based sintered body suitable for being enveloped in light metal alloy such as an aluminum alloy by casting, and a method for producing the same. A...
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6960319 |
Tungsten alloys for penetrator application and method of making the same
Disclosed is a flow-softening tungsten alloy having the general formula:
W 100-p A i B j C k D e
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6890368 |
Dry self-lubricating dense material; a mechanical part formed from said material; a method of manufacturing said material
The present invention provides:
a material, which is dense, with a density of ≧90%, bulk dry self-lubricating, with a coefficient of friction of <0.3, constituted by a matrix that...
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6837915 |
High density, metal-based materials having low coefficients of friction and wear rates
High theoretical density, metal-based materials containing graphite or hexagonal boron nitride have low coefficients of friction and wear rates are useful for bearings, bushings and other articles...
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6793876 |
Production process for Fe-based sintered alloy valve seat
A valve seat is produced by (a) using, as a raw material powder for forming a matrix, an Fe-based alloy powder with an average particle size of 20 to 50 μm, and using, as a raw material powder for...
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6773482 |
cold work steel alloy for the manufacture of parts by powder metallurgy
A cold work steel alloy for the manufacture of parts, comprising the elements C, Si, Mn, Cr, W, Mo, V, Nb, Co, S, N, Ni and accompanying elements in the concentration ranges recited in claim 1 ...
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6712872 |
Powder metallurgy produced valve body and valve fitted with said valve body
The invention relates to a valve body produced by powder metallurgical methods that exhibits high thermal and wear resistance and has the following composition by weight: 0.5% to 2.0% C; 5.0% to...
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6712871 |
Sintered alloy for valve seat having excellent wear resistance and method for producing the same
A sintered alloy composition for automotive engine valve seats, and a method for producing the same, are described. An iron base sintered alloy composition comprising vanadium carbide particles,...
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6709739 |
Closed cell metal composites
A plurality of closed metal cells is provided. Each cell encapulates a fluid or a fluid-like filler with a metal skin or cell wall. The closed cells are joined into an aggregate arrangement to form...
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6679933 |
Low resistivity materials with improved wear performance for electrical current transfer and methods for preparing same
A copper graphite composite material suitable for use in applications such as brushes, switches and contact materials for rail systems and other industrial devices. The composite comprises a copper...
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6676724 |
Powder metal valve seat insert
A powder metal engine component particularly suited for use as a valve seat insert in both light and heavy duty internal combustion engine applications. The powder metal engine component contains...
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6660056 |
Valve seat for internal combustion engines
A valve seat is provided in which wear resistance can be ensured by optimizing the matrix structure without dispersing of expensive hard particles, and therefore the machinability can be improved...
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6652618 |
Iron based mixed power high strength sintered parts
On the basis of mass percentage of a mixture, 1-5% of Ni powder, 0.5-3% of Cu powder, and 0.2-0.9% of graphite powder are mixed into an alloy steel powder containing 0.5-3 mass % of prealloyed Ni,...
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6652617 |
PM high-speed steel having high elevated-temperature strength
A high-speed steel article, particularly a cutting tool, produced by powder metallurgy and its production, the steel having a high degree of purity corresponding to a K0 value of no higher than 3...
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6632263 |
Sintered products having good machineability and wear characteristics
An iron-based sintered powder metal mixture for valve guides, valve seat inserts and other high temperature, high wear applications requiring excellent net-shape stability during sintering...
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6623542 |
Slide member
The slide member 5 slidably guided on the outer peripheral surface of a shaft is formed by adding 10-50% by volume of thermosetting resin to a metal powder consisting mainly of copper powder,...
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6616726 |
Material for valve guides
Disclosed is a sintered alloy material for valve guides, containing: 1.5% to 4% by mass of carbon; 1% to 20% by mass of copper; 0.1% to 2% by mass of tin; 0.01% or more than 0.01% and less than...
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6613122 |
Micronic pre-alloyed metal powder based on three-dimensional transition metal
The invention concerns a pre-alloyed metal powder essentially consisting of at least two transition metals selected among iron, cobalt, nickel, copper and zinc, and also capable of containing...
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6599345 |
Powder metal valve guide
A powder metal blend for making a powder metal part especially a valve guide 14 for an internal combustion engine particularly suited for operation where there is little or no engine oil...
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6562098 |
Wear resistant sintered member
A wear resistant sintered member exhibits superior wear resistance at the same level as those of the conventional materials without using a Co-based hard phase is provided. A first hard phase...
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6524365 |
Bearing made of graphite-dispersed copper-based sintered alloy and motorized fuel pump using this bearing
A bearing for motorized fuel pumps comprising a graphite-dispersed copper-based sintered alloy which contains 10 to 25% by weight of Zn, 10 to 25% by weight of Ni, 0.1 to 0.9% by weight of P, and 1...
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6524363 |
Diamond coated cutting tools and method of manufacture
A coated body that has a substrate of tungsten, carbon, and cobalt, and wherein the substrate presents a surface. Eta phase is present at the surface of the substrate. Fibrous tungsten carbide...
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6488736 |
Method of producing sintered metal sprocket and sprocket produced by the method
A sintered metal sprocket for a silent chain is produced by the following steps. A base mixture is prepared, which contains a powder metallurgical iron powder, a lubricant and a graphite powder....
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6482248 |
Aluminum composite for gun barrels
An aluminum/diamond composite for the manufacture of metal structures having high yield strength, high stiffness, high thermal conductivity, and low coefficient of thermal expansion. The composite...
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6468680 |
Cemented carbide insert with binder phase enriched surface zone
The present invention relates to a coated cemented carbide insert with a binder phase enriched surface zone. The WC-grains have an average grain size in the range 1.0-3.5 μm, preferably 1.3-3.0...
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6447569 |
Diamond containing edge material
A blade material, containing diamond particles below about 100 μm in diameter, is formed as a cutting material where the diamond particles serve as cutting agents while being fixed in a retaining...
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6391083 |
Mixture for powder metallurgy product and method for producing the same
A mixture for a powder metallurgy product, including iron powder, graphite powder and copper (Cu) of about 3.0 to about 5.0 weight percent. Iron powder includes iron grains which contain MnS...
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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...
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6358298 |
Iron-graphite composite powders and sintered articles produced therefrom
An iron-graphite composite powder having a microstructure comprising carbon clusters embedded in a ferrous matrix is disclosed. Also disclosed is a process for preparing the iron-graphite composite...
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6355208 |
Die lubricant and iron-based powder mixture for warm compaction with die lubrication, and processes for producing high-density iron-based green and sintered compacts
A process for producing a high-density iron-based green compact is provided that can form a green compact with a high density. Also provided is a process for producing a sintered compact from the...
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6348079 |
Sintered alloy having a wear resistance for a valve seat and method of producing the same
The present invention relates to s a sintered alloy having an excellent wear resistance for a valve seat and a method of producing the same. More particularly, the present invention relates to the...
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6340377 |
High-temperature wear-resistant sintered alloy
The invention relates to an iron-based high-temperature wear-resistant sintered alloy. This alloy contains 3.74-13.36 wt % W, 0.39-5.58 wt % V, 0.2-5.78 wt % Cr, 0.1-0.6 wt % Si, 0.39-1.99 wt % Mn,...
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6338753 |
Powder product to protect moulds for the centrifugal casting of cast iron tubes and method of preparing this product
Powder product for the protection of molds for centrifugal casting of cast iron tubes, and a method for its production. The powder contains a mixture of a silicon-based inoculating agent and a...
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6336950 |
Electrode rod for spark deposition, process for the production thereof, and process for covering with superabrasive-containing layer
An aspect of this invention is an electrode rod for spark alloying, comprising a compact of a first powder of a first component which comprises a metal selected from a group of Fe, Co, Ni, metals...
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