Method of producing particulate-reinforced composites and composites produced thereby

A process for producing particle-reinforced composite materials through utilization of an in situ reaction to produce a uniform dispersion of a fine particulate reinforcement phase. The process includes forming a melt of a first material, and then introducing particles of a second material into the melt and subjecting the melt to high-intensity acoustic vibration. A chemical reaction initiates between the first and second materials to produce reaction products in the melt. The reaction products comprise a solid particulate phase, and the high-intensity acoustic vibration fragments and/or separates the reaction products into solid particles that are dispersed in the melt and are smaller than the particles of the second material. Also encompassed are particle-reinforced composite materials produced by such a process.

FIBER-REINFORCED Al-Li COMPRESSOR AIRFOIL AND METHOD OF FABRICATING

A metal matrix composite lightweight compressor airfoil. The airfoil comprises a braided fabric embedded in a lightweight aluminum-lithium alloy. The airfoils are fabricated by forming a plurality of fiber tows by twisting filaments or fibers. The tows are then braided into a fabric. The fabric may be impregnated with an optional fugitive polymer that temporarily occupies interstices of the fabric to facilitate handling of the pre-formed braided fabric, but which is subsequently removed. The airfoil may then be formed as a MMC by one of two separate methods. In the first method, aluminum-lithium alloy is pressure augmented casting into a die that includes a preform of fabric impregnated with fugitive polymer. In a second method, a preform is formed using a tool and mandrel by impregnating fabric with aluminum-lithium alloy. Then aluminum-lithium alloy is pressure augmented cast into a die that includes the alloy-impregnated preform.

Composites of bulk amorphous alloy and fiber/wires

A composite structure includes a matrix material having an intrinsic strain-to-failure rating in tension and a reinforcing material embedded in the bulk material. The reinforcing material is pre-stressed by a tensile force acting along one direction. The embedded reinforcing material interacts with the matrix material to place the composite structure into a compressive state. The compressive state provides an increased strain-to-failure rating in tension of the composite structure along a direction that is greater than the intrinsic strain-to-failure rating in tension of the matrix material along that direction. At least one of the matrix material and the reinforcing material is a bulk amorphous alloy (BAA). The reinforcing material can be a fiber or wire. In various embodiments, the matrix material may be a bulk amorphous alloy and/or the reinforcing material may be a bulk amorphous alloy.

Fiber-containing composites

Provided in one embodiment is a method for producing a composition, comprising: heating a first material comprising an amorphous alloy to a first temperature; and contacting the first material with a second material comprising at least one fiber to form a composition comprising the first material and the second material; wherein the first temperature is higher than or equal to a glass transition temperature (T g ) of the amorphous alloy.

ADDITIVES FOR IMPROVING THE CASTABILITY OF ALUMINUM-BORON CARBIDE COMPOSITE MATERIAL

The present disclosure provides additives capable of undergoing a peritectic reaction with boron in aluminum-boron carbide composite materials. The additive may be selected from the group consisting of vanadium, zirconium, niobium, strontium, chromium, molybdenum, hafnium, scandium, tantalum, tungsten and combination thereof, is used to maintain the fluidity of the molten composite material, prior to casting, to facilitate castability. 1. A method of preparing a cast composite material , said method comprising: the additive is selected from the group consisting of chromium, molybdenum, vanadium, niobium, zirconium, strontium, scandium, and any combination thereof; and', 'a sample of the composite material has a fluidity, after having been heated, prior to casting, to a temperature of about 700° C. for about 120 minutes, corresponding to a cast length of at least 100 mm when measured using a mold having a groove for containing the sample, the groove having a width of about 33 mm, a height of between about 6.5 mm and about 4.0 mm and being downwardly inclined, from an horizontal axis, of about 10°; and, '(a) combining (i) a molten aluminum alloy comprising up to 1.8 w/w % of silicon based on a total weight of the aluminum alloy and an additive capable of undergoing a peritectic reaction with boron with (ii) between 4 and 40 v/v % of a source of boron carbide particles so as to provide a molten composite material comprising products of the peritectic reaction between the additive and boron and dispersed boron carbide particles, wherein(b) casting the molten composite so as to form the cast composite material.2. The method of claim 1 , wherein the cast length is at least 190 mm.3. The method of claim 1 , further comprising claim 1 , prior to step (b) claim 1 , holding the molten composite material during a holding time and casting the molten composite during a casting time claim 1 , wherein the combination of the holding time and the casting time is at least 120 minutes ...

Syntactic Metal Matrix Materials and Methods

A syntactic metal foam composite that is substantially fully dense except for syntactic porosity is formed from a mixture of ceramic microballoons and matrix forming metal. The ceramic microballoons have a uniaxial crush strength and a much higher omniaxial crush strength. The mixture is continuously constrained while it is consolidated. The constraining force is less than the omniaxial crush strength. The substantially fully dense syntactic metal foam composite is then constrained and deformation worked at a substantially constant volume. The deformation working is typically performed at a yield strength that is adjusted by way of selecting a working temperature at which the yield strength is approximately less than the omniaxial crush strength of the included ceramic microballoons. This deformation causes at least work hardening and grain refinement in the matrix metal. 115-. (canceled)16. A method for forming a syntactic metal foam composite that is substantially free of non-syntactic porosity comprising:providing ceramic microballoons;applying a metal coating to an outer surface of said ceramic microballoons to form metal-coated microballoons;particle cladding said metal-coated microballoons with a matrix-forming metallic material to form cladded metal-coated microballoons;consolidating said cladded metal-coated microballoons to form a green preform;sintering said green preform to form said syntactic metal foam, said syntactic metal foam formed of said ceramic microballoons and a metal matrix positioned between said ceramic microballoons, said syntactic metal foam having both syntactic and non-syntactic porosity, said syntactic porosity provided by said ceramic microballoons, said syntactic porosity having a syntactic porosity volume, said ceramic microballoons having an average unconstrained uniaxial crush strength, and an average omniaxial crush strength that is greater than said average unconstrained uniaxial crush strength, said metal matrix having a yield ...

HARD WELD OVERLAYS RESISTANT TO RE-HEAT CRACKING

Disclosed herein are embodiments of a hard weld overlay which can be resistant to cracking. The alloys can be able to resist cracking through prevention of the precipitation and/or growth of embrittling carbide, borides, or borocarbides along the grain boundaries at elevated temperatures. By controlling the thermodynamics of the boride and carbide phases, it is possible to create an alloy which forms hard wear resistant phases that are not present along the grain boundaries of the matrix. 1. A work piece having at least a portion of its surface covered by a layer comprising a microstructure containing primary hard particles comprising one or more of boride , carbide , borocarbide , nitride , carbonitride , aluminide , silicide , oxide , intermetallic , and laves phase , wherein the layer comprises a macro-hardness of 50 HRC or greater and a high resistance to cracking , wherein:primary hard particles are defined as forming at least 10K above the solidification temperature of Fe-rich matrix in the alloy; andhigh resistance to cracking is defined as exhibiting no cracks when hardbanding on a steel pipe which is pre-heated to 300° F. and contains an internal reservoir of cooling water.2. The work piece of claim 1 , wherein the primary hard particle fraction is a minimum of 2 volume percent.32. The work piece of any one of - claims 1 , wherein the secondary hard particle fraction is a maximum of 10 volume percent.43. The work piece of any one of - claims 1 , wherein the surface exhibits a mass loss of less than 0.1 grams when subject to 500 carbide hammer impacts possessing 8J of impact energy.54. The work piece of any one of - claims 1 , wherein a surface of the layer exhibits high wear resistance as characterized by an ASTM G65 dry sand wear test mass loss of 0.6 grams or less.65. The work piece of any one of - claims 1 , wherein the layer comprises in wt. % of Fe: bal claims 1 , B: 0-1 claims 1 , C: 0-2 claims 1 , Co: 0-2 claims 1 , Cr claims 1 , 0-20 claims 1 , Mn ...

Method for producing a component, and device

A method for producing a component for a turbomachine, having the additive build-up of the component by an additive production method from a base material for the component and the introduction of material fibers into a construction for the component during the additive build-up in such a way that the material fibers are oriented in a circumferential direction of the component around a component axis and in such a way that a fiber composite material is produced, including the material fibers and a base material that is solidified by the additive build-up. A corresponding component is produced by the method and a corresponding device is used for producing the component.

Manufacture of Controlled Rate Dissolving Materials

A castable, moldable, or extrudable structure using a metallic base metal or base metal alloy. One or more insoluble additives are added to the metallic base metal or base metal alloy so that the grain boundaries of the castable, moldable, or extrudable structure includes a composition and morphology to achieve a specific galvanic corrosion rates partially or throughout the structure or along the grain boundaries of the structure. The insoluble additives can be used to enhance the mechanical properties of the structure, such as ductility and/or tensile strength. The insoluble particles generally have a submicron particle size. The final structure can be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final structure as compared to the non-enhanced structure. 125-. (canceled)26. A method for forming a metal cast structure comprising:providing one or more metals used to form a base metal material, said base metal material includes one or more metals selected from the group consisting of magnesium, zinc, titanium, aluminum, and iron;providing a plurality of particles that have a low solubility when added to said base metal material in a molten form, said plurality of particles having a melting point that is greater than a melting point of said base metal material, said insoluble particles have a different galvanic potential from said base metal material;heating said base metal material until molten;mixing said molten base metal material and said plurality of particles to form a mixture and to cause said plurality of particles to disperse in said mixture;cooling said mixture to form said metal cast structure; and,wherein said plurality of particles are disbursed in said metal cast structure to obtain a desired dissolution rate of said metal cast structure, at least 50% of said plurality of particles located in grain boundary layers of said metal cast structure, said insoluble ...

Manufacture of Controlled Rate Dissolving Materials

A castable, moldable, or extrudable structure using a metallic base metal or base metal alloy. One or more insoluble additives are added to the metallic base metal or base metal alloy so that the grain boundaries of the castable, moldable, or extrudable structure includes a composition and morphology to achieve a specific galvanic corrosion rates partially or throughout the structure or along the grain boundaries of the structure. The insoluble additives can be used to enhance the mechanical properties of the structure, such as ductility and/or tensile strength. The insoluble particles generally have a submicron particle size. The final structure can be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final structure as compared to the non-enhanced structure. 125-. (canceled)26. A metal cast structure that includes a base metal material and a plurality of particles disbursed in said metal cast structure to obtain a desired dissolution rate of said metal cast structure , said particles having a melting point that is greater than a melting point of said base metal material , said particles constitute about 0.1-40 wt. % of said metal cast structure , said particles have a different galvanic potential from said base metal material , said base metal material is a magnesium alloy or an aluminum alloy , said particles including one or more materials selected from the group consisting of iron , copper , titanium , zinc , tin , cadmium , lead , beryllium , nickel , carbon , iron alloy , copper alloy , titanium alloy , zinc alloy , tin alloy , cadmium alloy , lead alloy , beryllium alloy , and nickel alloy.27. The metal cast structure as defined in claim 26 , wherein said base metal material includes a majority weight percent magnesium.28. The metal cast structure as defined in claim 26 , wherein said particles resist forming compounds with said base metal material due to a solubility ...

SYNTACTIC METAL MATRIX MATERIALS AND METHODS

A syntactic metal foam composite that is substantially fully dense except for syntactic porosity is formed from a mixture of ceramic microballoons and matrix forming metal. The ceramic microballoons have a uniaxial crush strength and a much higher omniaxial crush strength. The mixture is continuously constrained while it is consolidated. The constraining force is less than the omniaxial crush strength. The substantially fully dense syntactic metal foam composite is then constrained and deformation worked at a substantially constant volume. The deformation working is typically performed at a yield strength that is adjusted by way of selecting a working temperature at which the yield strength is approximately less than the omniaxial crush strength of the included ceramic microballoons. This deformation causes at least work hardening and grain refinement in the matrix metal. 1. A deformed syntactic metal foam composite formed of metal-coated microballoons and a metal matrix material that have been sintered together , a plurality of said metal-coated microballoons wherein each is formed of a ceramic microballoon coated with a metal material having a different composition from said ceramic microballoon , said ceramic microballoons having an average particle size of 1 to 500 microns , said ceramic microballoon constituting a greater weight percent of said metal-coated microballoon than said coating of metal material , said metal material coating on said ceramic microballoon formed by chemical vapor deposition or by immersion in a metal slurry prior to combining said metal-coated microballoons with said metal matrix material.2. The deformed syntactic metal foam composite as defined in claim 1 , wherein a weight percent of said metal matrix material is greater than a weight percent of said metal-coated microballoons in said article.3. The deformed syntactic metal foam composite as defined in claim 1 , wherein an average particle size of said metal matrix material prior to ...

Degradable Metal Matrix Composite

The present invention relates to the composition and production of an engineered degradable metal matrix composite that is useful in constructing temporary systems requiring wear resistance, high hardness, and/or high resistance to deformation in water-bearing applications such as, but not limited to, oil and gas completion operations.

Dispersoid reinforced alloy powder and method of making

A method of making dispersion-strengthened alloy particles involves melting an alloy having a corrosion and/or oxidation resistance-imparting alloying element, a dispersoid-forming element, and a matrix metal wherein the dispersoid-forming element exhibits a greater tendency to react with a reactive species acquired from an atomizing gas than does the alloying element. The melted alloy is atomized with the atomizing gas including the reactive species to form atomized particles so that the reactive species is (a) dissolved in solid solution to a depth below the surface of atomized particles and/or (b) reacted with the dispersoid-forming element to form dispersoids in the atomized particles to a depth below the surface of said atomized particles. The atomized alloy particles are solidified as solidified alloy particles or as a solidified deposit of alloy particles. Bodies made from the dispersion strengthened alloy particles, deposit thereof, exhibit enhanced fatigue and creep resistance and reduced wear as well as enhanced corrosion and/or oxidation resistance at high temperatures by virtue of the presence of the corrosion and/or oxidation resistance imparting alloying element in solid solution in the particle alloy matrix. 114.-. (canceled)15. Atomized alloy particles , each comprising a matrix metal comprising Cu , an environmental resistance-imparting alloying element substantially in solid solution in the matrix metal to provide a particle alloy matrix , and dispersoids formed in-situ in the particle alloy matrix during atomization , wherein the particles include a surface compound thereon formed during atomization by reaction of a reactive species and the alloying element.16. The particles of having at least a surface region that contains the dispersoids.17. The particles of wherein the surface region has a thickness greater than 1 micrometer.18. (canceled)19. The particles of wherein the alloying element is selected from the group consisting of Cr claim 15 , Mo ...

Dispersoid reinforced alloy powder and method of making

A method of making dispersion-strengthened alloy particles involves melting an alloy having a corrosion and/or oxidation resistance-imparting alloying element, a dispersoid-forming element, and a matrix metal wherein the dispersoid-forming element exhibits a greater tendency to react with a reactive species acquired from an atomizing gas than does the alloying element. The melted alloy is atomized with the atomizing gas including the reactive species to form atomized particles so that the reactive species is (a) dissolved in solid solution to a depth below the surface of atomized particles and/or (b) reacted with the dispersoid-forming element to form dispersoids in the atomized particles to a depth below the surface of said atomized particles. The atomized alloy particles are solidified as solidified alloy particles or as a solidified deposit of alloy particles. Bodies made from the dispersion strengthened alloy particles, deposit thereof, exhibit enhanced fatigue and creep resistance and reduced wear as well as enhanced corrosion and/or oxidation resistance at high temperatures by virtue of the presence of the corrosion and/or oxidation resistance imparting alloying element in solid solution in the particle alloy matrix. 114.-. (canceled)15. Atomized alloy particles , each comprising a matrix metal comprising Au , an environmental resistance-imparting alloying element substantially in solid solution in the matrix metal to provide a particle alloy matrix , and dispersoids formed in-situ in the particle alloy matrix during atomization , wherein the particles include a surface compound thereon formed during atomization by reaction of a reactive species and the alloying element.16. The particles of having at least a surface region that contains the dispersoids.17. The particles of wherein the surface region has a thickness greater than 1 micrometer.18. (canceled)19. The particles of wherein the alloying element is selected from the group consisting of Cr claim 15 , Mo ...

FIBER-CONTAINING COMPOSITES

Provided in one embodiment is a method for producing a composition, comprising: heating a first material comprising an amorphous alloy to a first temperature; and contacting the first material with a second material comprising at least one fiber to form a composition comprising the first material and the second material; wherein the first temperature is higher than or equal to a glass transition temperature (T) of the amorphous alloy. 1. A method for producing a composite , comprising:heating a structure to a first temperature, wherein the structure comprises a first material comprising an amorphous alloy and a second material comprising at least one fiber,pressurizing the structure to cause the first material to flow into the second material, andcooling the structure to form the composite,{'sub': g', 'x, 'wherein the first temperature is higher than or equal to the glass transition temperature (T) of the amorphous alloy and less than the crystallization temperature (T) of the amorphous alloy.'}2. The method of claim 1 , further comprising contacting the first material and the second material.3. A method for producing a composite claim 1 , comprising:heating a structure to a first temperature, wherein the structure comprises a first material and a second material comprising at least one fiber,pressurizing the structure to cause the first material to flow into the second material, andcooling the structure to form the composite,wherein the cooling the first material is at a first cooling rate sufficient to form an amorphous alloy in the first material and the first temperature is greater than the crystallization temperature (Tx) of the amorphous alloy.4. The method of claim 2 , wherein the contacting further comprises applying a pressure to the first material.5. The method of claim 1 , wherein the first temperature is lower than a melting temperature of the second material.6. The method of claim 2 , wherein the contacting results in substantially no chemical ...

Method and Machine for Manufacturing a Fibre Electrode

A method for forming a connection such as an electrical connection, to a fibre material electrode element comprises moving a length of the fibre material relative to a pressure injection stage and pressure impregnating by a series of pressure injection pulses a lug material into a lug zone part of the fibre material to surround and/or penetrate fibres of the fibre material and form a lug strip in the lug zone. The fibre material may be a carbon fibre material and the lug material a metal such as Pb or a Pb alloy. Apparatus for forming an electrical connection to a fibre material electrode element is also disclosed. 1. A method for forming a connection to a fibre material electrode element comprising a fibre material , which comprises moving a length of the fibre material continuously or in a stepped movement relative to a pressure injection stage or vice versa and by the pressure injection stage pressure impregnating by a series of pressure injection pulses an electrically conductive lug material into a lug zone part of the fibre material during the relative movement between the fibre material and pressure injection stage so that multiple pressure injection pulses inject lug material into different adjacent portions of the fibre material , to surround and/or penetrate fibres of the fibre material and so that the molten lug material impregnating into the fibre material from each new injector pulse merges while molten with the lug material in the fibre material injected at the prior injector pulse to form a continuous lug strip along the lug zone part of the fibre material , said lug zone part of the fibre material having a width transverse to a length of the fibre material less than a greater width of the fibre material.2. A method according to claim 1 , which comprises carrying out said moving a length of the fibre material and said impregnating claim 1 , to form a continuous lug strip along the lug zone part of the fibre material claim 1 , without containing the ...

Self-Actuating Device For Centralizing an Object

The invention is directed to the interventionless activation of wellbore devices using dissolving and/or degrading and/or expanding structural materials. Engineered response materials, such as those that dissolve and/or degrade or expand upon exposure to specific environment, can be used to centralize a device in a wellbore. 132-. (canceled)33. A centralizing device configured to be placed on , attached to , or combinations thereof an outside surface of a bore member , said centralizing device includes a body , an active material that includes one or more materials selected from the group consisting of an expandable material and a degradable material , and one or more well bore wall engagement members positioned in a non-deployed position , said one or more well bore wall engagement members including one or more structures selected from the group consisting of slat , wing , bow , leave , ribbon , extension and rib , said one or more well bore wall engagement members configured to move from said non-deployed position to a deployed position , said active configured to cause or to enable said one or more well bore wall engagement members to move from said non-deployed position to said deployed position , a maximum outer perimeter of said centralizing device is greater in size when said one or more well bore wall engagement members are in said deployed position as compared to when said one or more well bore wall engagement members are in said non-deployed position.34. The centralizing device as defined in claim 33 , wherein said active material includes said expandable material claim 33 , said expandable material configured to increase in volume when activated claim 33 , said increase in volume of said expandable material configured to provide a force that causes said one or more well bore wall engagement members to move or deform and thereby move from said non-deployed position to said deployed position.35. The centralizing device as defined in claim 33 , wherein said ...

Galvanically-Active In Situ Formed Particles for Controlled Rate Dissolving Tools

A tastable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contains an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material. 1. A method of controlling the dissolution properties of a magnesium or a magnesium alloy comprising of the steps of:heating the magnesium or a magnesium alloy to a point above its solidus temperature;adding an additive to said magnesium or magnesium alloy while said magnesium or magnesium alloy is above said solidus temperature of magnesium or magnesium alloy to form a mixture, said additive including one or more first additives having an electronegativity of greater than 1.5, said additive constituting about 0.05-45 wt. % of said mixture;dispersing said additive in said mixture while said magnesium or magnesium alloy is above said solidus temperature of magnesium or magnesium alloy; and,cooling said mixture to form a magnesium composite, said magnesium composite including in situ precipitation of galvanically-active intermetallic phases.2. The method as defined in claim 1 , wherein said first additive has an electronegativity of greater than 1.8.3. The method as defined in claim 1 , wherein said magnesium or magnesium alloy is heated to a temperature that is less than said melting point temperature of at least one of said additives.4. The method as defined in claim 1 , wherein said additive includes one or more metals ...

Method and apparatus for the production of carbon fibre reinforced aluminium matrix composite wires

The invention relates to a method for the production of carbon fibre reinforced aluminium matrix composite wires by drawing carbon fibres through molten salt and molten aluminium in such a way that the molten aluminium and the molten salt are spatially separated, and the carbon fibres are drawn through first the molten salt, then the molten aluminium separated from it. The invention further relates to an apparatus for the implementation of the method. 1. A method for the production of carbon fibre reinforced aluminium matrix composite wires by drawing carbon fibres through molten salt and molten aluminium , characterized in that the molten aluminium and the molten salt are spatially separated , and the carbon fibres are drawn through first the molten salt , then the molten aluminium separated form it.2. The method according to claim 1 , characterized in that a temperature between 700-900° C. is used.3. The method according to claim 1 , characterized in that the molten salt is KTiF claim 1 , dissolved in a molten alkali halide.4. The method according to claim 3 , characterized in that the molten salt is an equimolar mixture of NaCl and KCl claim 3 , containing 10-20 wt % of KTiF5. The method according to claim 1 , characterized in that an air atmosphere at 1 bar pressure or an inert gas atmosphere at 1 bar pressure is used.6. The method according to claim 1 , characterized in that the length of stay of the carbon fibres in the molten salt and the molten aluminium is equal to or exceeds a critical value increasing quadratically with the increase in the diameter of the carbon fibre bundle.7. The method according to claim 6 , characterized in that for a carbon fibre bundle diameter of 2 mm the critical length of stay is about 6 s.834561172ab. An apparatus for the production of carbon fibre reinforced aluminium matrix composite wires claim 6 , the main parts of which are heatable containers for holding the molten salt and the molten aluminium claim 6 , and a supply reel ...

PREPARATION METHOD OF A LITHIUM-CONTAINING MAGNESIUM/ALUMINUM MATRIX COMPOSITE

The present invention relates to a preparation method of a lithium-containing magnesium/aluminum matrix composite. The preparation method is performed according to the following steps: (1) preparing magnesium ingots or aluminum ingots, preparing lithium metal, and preparing flux and reinforcements; (2) heating the flux to prepare flux melt, and adding the reinforcements to the flux melt to prepare a liquid-solid mixture; (3) pouring the liquid-solid mixture in a normal-temperature crucible, and performing cooling to obtain a precursor; (4) preheating a crucible, adding raw materials, and performing melting to form a raw material melt; (5) controlling a temperature of the raw material melt to 973-993K, adding the lithium metal, performing stirring, adding the precursor, performing stirring and mixing, raising temperature to 993-1013K, and performing standing; and (6) scumming operation should be carried out, and performing temperature casting on composite melt. 1. A preparation method of a lithium-containing magnesium/aluminum matrix composite , comprising the following steps:{'sub': 2', '3', '2', '2', '3', '2', '2, '(1) preparing magnesium ingots or aluminum ingots as raw materials, preparing lithium metal, and preparing flux and reinforcements, wherein the flux contains components in percentage by mass of 65%-85% of lithium chloride, 15%-35% of lithium fluoride and less than or equal to 20% of lithium bromide, the reinforcements are elemental metal powder, rare earth oxide, carbide, boride or metal oxide, the elemental metal powder is W, Mo or Ni, the rare earth oxide is LaO, CeOor YO, the carbide is TiC or SiC, the boride is ZrB, and the metal oxide is MgO or SiO, the reinforcements are 0.1%-30% of total volume of the raw materials, the reinforcements are 1%-50% of total volume of the flux, and the lithium metal is 0.1%-10% of total mass of the raw materials;'}(2) putting the flux into a clay crucible or a graphite crucible, performing heating to 673-773K to make ...

Self-Actuating Device For Centralizing an Object

The invention is directed to the interventionless activation of wellbore devices using dissolving and/or degrading and/or expanding structural materials. Engineered response materials, such as those that dissolve and/or degrade or expand upon exposure to specific environment, can be used to centralize a device in a wellbore. 1. A method for centralizing a bore member such as a pipe or tube in a well bore comprising:a. providing a centralizing device that is placed on, attached to, or combinations thereof on an outside surface of said bore member, said centralizing device includes a body, one or more active materials selected form the group consisting of an expandable material and a degradable material, and one or more well bore wall engagement members, at least one of said well bore wall engagement members positioned in a non-deployed position, said one or more well bore wall engagement members including one or more structures selected from the group consisting of aa slat, a wing, a bow, a leaf, a ribbon, an extension and a rib, said one or more well bore wall engagement members configured to move from said non-deployed position to a deployed position, said active material configured to cause or enable said one or more well bore wall engagement members to move from said non-deployed position to said deployed position, a maximum outer perimeter of said centralizing device is greater in size when said one or more well bore wall engagement members are in said deployed position as compared to when said one or more well bore wall engagement members are in said non-deployed position; and,b. activating said active material on said centralizing device to cause or enable said one or more well bore wall engagement members to move from said non-deployed position to said deployed position and to cause said bore member to be moved toward a centralized position in said well bore.2. The method as defined in claim 1 , wherein said step of activation includes one or more a events ...

PERMEABLE POROUS COMPOSITE

A porous and permeable composite for treatment of contaminated fluids characterized in that said composite includes a body of iron particles and 0.01-10% by weight of at least one functional ingredient distributed and locked in the pores and cavities of the iron body. Also, methods of making a permeable porous composite for water treatment. Also, use of a permeable porous composite for reducing the content of contaminants in a fluid, wherein said fluid is allowed to pass through the permeable composite. 1. A porous and permeable composite for treatment of contaminated fluids characterized in that said composite comprises a body of iron particles and 0.01-10% by weight of at least one functional ingredient , selected from the group consisting of carbon containing compounds , calcium containing compounds , sodium containing compounds , iron containing compounds , titanium containing compounds and aluminum containing compounds , in free form , distributed and locked in the pores and cavities of the iron body , wherein the iron particles have a particle size range between 10 μm and 10 mm.2. A composite according to claim 1 , wherein the iron powder particles have a particle size range between 20 μm and 5 mm and preferably between 45 μm and 2 mm; or 1 μm to 2 mm claim 1 , preferably 1 μm to 1 mm and preferably 1 μm to 0.5 mm.3. A composite according to claim 1 , wherein said carbon containing compounds are selected from graphite claim 1 , activated carbon and coke; said iron containing compounds are selected from ferric or ferrous sulphate claim 1 , ferric oxides and ferric hydroxides; said titanium containing compound is titania; said sodium containing compound is soda; said calcium containing compounds is lime; and said aluminum containing compounds is selected from alumina and aluminum silicates such as zeolites; preferably from the group of graphite claim 1 , activated carbon claim 1 , coke claim 1 , activated alumina and zeolites.4. A composite according to claim 1 ...

Magnetic composite material and rotating electric machine

The magnetic composite material of the embodiments is a magnetic composite material that includes a magnetic material having a plane at the surface; and a plate-shaped reinforcing material, the magnetic material having a plurality of magnetic bodies having a planar structure and having a magnetic metal phase containing at least one first element selected from the group consisting of iron (Fe), cobalt (Co), and nickel (Ni), and principal surfaces; and an intercalated phase containing at least one second element selected from the group consisting of oxygen (O), carbon (C), nitrogen (N), and fluorine (F). In the magnetic composite material, the principal surfaces are oriented to be approximately parallel to the plane and have the difference in coercivity on the basis of direction within the plane.

FIBER-CONTAINING DIAMOND-IMPREGNATED CUTTING TOOLS AND METHODS OF FORMING AND USING SAME

Fibers for diamond-impregnated cutting tools and their associated methods for manufacture and use are described. A matrix is formed that contains fibers made from carbon, glass, ceramic, polymer, and the like. The matrix is then sintered to form a cutting portion of a drill bit. The type and concentration of the fibers can be modified to control the tensile strength and the erosion rate of the matrix to optimize the cutting performance of the tools. Additionally, the fibers may be added to the cutting section to weaken the structure and allow higher modulus binders to be used for the cutting tools at a lower cost, allowing the amount of fibers to be tailored to retain the diamonds in the cutting portion for the desired amount. As the cutting portion erodes, the fibers may also increase the lubricity at the face of the cutting portion. 1a matrix of hard particulate material;a binder infiltrated therein the matrix of hard particulate material;a plurality of cutting media dispersed within the matrix of hard particulate material; anda plurality of metal fibers dispersed within the matrix of hard particulate material.. A cutting tool comprising a cutting section, the cutting section comprising: This application is a continuation of co-pending U.S. patent application Ser. No. 14/229,387, filed Mar. 28, 2014, which is a continuation-in-part of U.S. patent application Ser. No. 13/477,989, filed May 22, 2012, which is now U.S. Pat. No. 8,783,384, issued Jul. 22, 2014, which is a continuation of U.S. patent application Ser. No. 12/276,903, filed Nov. 24, 2008, which is now U.S. Pat. No. 8,191,445, issued Jun. 5, 2012, which is a divisional of U.S. patent application Ser. No. 11/948,185, filed Nov. 30, 2007, which is now U.S. Pat. No. 7,695,542, issued Apr. 13, 2010, which claims priority to and the benefit of U.S. Provisional Application No. 60/917,016, filed May 9, 2007, and U.S. Provisional Application No. 60/867,882, filed Nov. 30, 2006. The contents of each of the above- ...

HYDRIDE-COATED MICROPARTICLES AND METHODS FOR MAKING THE SAME

A metal microparticle coated with metal nanoparticles is disclosed. Some variations provide a material comprising a plurality of microparticles (1 micron to 1 millimeter) containing a metal or metal alloy and coated with a plurality of nanoparticles (less than 1 micron) or nanoparticle inclusions (potentially larger than 1 micron). The invention eliminates non-uniform distribution of sintering aids by attaching them directly to the surface of the microparticles. No method is previously known to exist which can assemble nanoparticle inclusions onto the surface of a metal microparticle. Some variations provide a solid article comprising a material with a metal or metal alloy microparticles coated with metal hydride or metal alloy nanoparticles, wherein the nanoparticles form continuous or periodic inclusions at or near grain boundaries within the microparticles. 1. An additively manufactured solid article comprising at least 0.25 wt % of a material containing a plurality of metal-containing or metal alloy-containing microparticles that are at least partially coated with a plurality of metal-containing nanoparticle inclusions.2. The additively manufactured solid article of claim 1 , wherein said additively manufactured solid article has an equiaxed-grain-growth structure.3. The additively manufactured solid article of claim 1 , wherein said metal-containing nanoparticle inclusions are continuous or periodic inclusions at or near grain boundaries between said metal-containing or metal alloy-containing microparticles.4. The additively manufactured solid article of claim 1 , wherein said metal-containing or metal alloy-containing microparticles are characterized by an average microparticle size between about 1 micron to about 1 millimeter.5. The additively manufactured solid article of claim 1 , wherein said metal-containing nanoparticle inclusions are characterized by an average nanoparticle size less than 1 micron.6. The additively manufactured solid article of claim 1 ...

PROCESS FOR MANUFACTURING A COMPOSITE MATERIAL

A composite material is provided having functionalized carbon nanotubes and a metal matrix. It is obtained by a process including dispersing functionalized carbon nanotubes or a mixture of functionalized carbon nanotubes and of at least one metal, in an open-pore or semi-open-pore metal foam, in order to form a composite structure, and compacting the composite structure obtained in the preceding stage in order to form the composite material in the form of a solid mass. 1. A composite material , wherein it has functionalized carbon nanotubes and a metal matrix , and it is obtained by a process comprising the steps of:i) dispersing functionalized carbon nanotubes or a mixture of functionalized carbon nanotubes and of at least one metal, in an open-pore or semi-open-pore metal foam, in order to form a composite structure;ii) compacting the composite structure obtained in the preceding stage i) in order to form said composite material in the form of a solid mass.2. The composite material according to claim 1 , wherein the metal foam is a syntactic foam or a metal sponge.3. The composite material according to claim 1 , wherein mixing functionalized carbon nanotubes and at least one metal is carried out according to a step a) prior to step i) by a liquid route claim 1 , by a solid route or by a molten route.4. The composite material according to claim 1 , wherein the at least one metal is chosen from copper claim 1 , aluminum claim 1 , a copper alloy claim 1 , an aluminum alloy and one of their mixtures.5. The composite material according to claim 1 , wherein the open-pore or semi-open-pore metal foam has a metal chosen from copper claim 1 , aluminum claim 1 , a copper alloy claim 1 , an aluminum alloy and one of their mixtures.6. The composite material according to claim 1 , wherein the metal foam is regular.7. The composite material according to claim 1 , wherein the metal foam comprises pores with a mean size ranging from 10 to 20 mm.8. The composite material according ...

Galvanically-Active In Situ Formed Particles for Controlled Rate Dissolving Tools

A castable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contains an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also he enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material. 117-. (canceled)18. A magnesium composite that includes in situ precipitation of galvanically-active intermetallic phases comprising a magnesium or a magnesium alloy and an additive constituting about 0.05-45 wt. % of said magnesium composite , said magnesium having a content in said magnesium composite that is greater than 50 wt. % , said additive forming metal composite particles or precipitant in said magnesium composite , said metal composite particles or precipitant forming said in situ precipitation of said galvanically-active intermetallic phases , said additive including one or more first additives having an electronegativity of greater than 1.5.19. The magnesium composite as defined in claim 18 , further including one or more second additives having an electronegativity of less than 1.25.20. The magnesium composite as defined in claim 18 , wherein said first additive has an electronegativity of greater than 1.8 claim 18 ,2118. The magnesium composite as defined in claim 18 , wherein said first additive includes one or more metals selected from the group consisting of copper claim 18 , nickel claim 18 , cobalt claim 18 , bismuth claim 18 , silver claim 18 , gold claim 18 , lead claim 18 , tin claim 18 , antimony ...

Composite powder of carbide/blending metal

A composite powder is provided. The composite powder comprises 80-97 wt % of carbide and 3-20 wt % of blending metal powder comprising cobalt and a first metal powder, wherein the first metal powder is formed of one of aluminum, titanium, iron, nickel, or a combination thereof, and the amount of cobalt is 90-99% of total blending metal powder.

Self-repairing metal alloy matrix composites, methods of manufacture and use thereof and articles comprising the same

Disclosed herein is a composite comprising a metal alloy matrix; where the metal alloy matrix comprises aluminum in an amount greater than 50 atomic percent; a first metal and a second metal; where the first metal is different from the second metal; and where the metal alloy matrix comprises a low temperature melting phase and a high temperature melting phase; where the low temperature melting phase melts at a temperature that is lower than the high temperature melting phase; and a contracting constituent; where the contracting constituent exerts a compressive force on the metal alloy matrix at a temperature between a melting point of the low temperature melting phase and a melting point of the high temperature melting phase or below the melting points of the high and low temperature melting phases.

Low Thermal Stress Metal Structures

A structured three-phase composite which include a metal phase, a ceramic phase, and a gas phase that are arranged to create a composite having low thermal conductivity, having controlled stiffness, and a CTE to reduce thermal stresses in the composite when exposed to cyclic thermal loads. The structured three-phase composite is useful for use in structures such as, but not limited to, heat shields, cryotanks, high speed engine ducts, exhaust-impinged structures, and high speed and reentry aeroshells. 1. A three- or more phase composite which includes a ceramic phase , a gas phase , and a metal phase , where said gas and ceramic phases are segregated into isolated pockets forming a discontinuous phase in said composite , said metal phase is continuous phase in said composite , said composite having a combination of compression modulus and coefficient of thermal expansion that combined to be at least 40% less than a modulus of said metal forming said metal phase , said composite also having a thermal conductivity that is at least 40% less than a thermal conductivity of said metal that forms said metal phase , said composite having a density that is at least 20% lower than a density of said metal that forms said metal phase.2. The three-phase composite as defined in claim 1 , wherein a plurality of said ceramic phase is formed of ceramic particles that include a central cavity or plurality of cavities that are filled with a portion of said gas phase.3. The three-phase composite as defined in claim 1 , wherein said ceramic phase is formed of one or more materials selected from the group consisting of carbon claim 1 , SiAlON claim 1 , SiN claim 1 , SiC claim 1 , SiOC claim 1 , SiO claim 1 , AlO claim 1 , aluminates claim 1 , zirconates claim 1 , aluminosilicates claim 1 , and ZrO4. The three-phase composite as defined in claim 1 , wherein said gas phase is a vacuum that does not include a gas or includes one or more gasses selected from the group consisting of air claim ...

METHOD OF PRODUCING PARTICULATE-REINFORCED COMPOSITES AND COMPOSITES PRODUCED THEREBY

A process for producing particle-reinforced composite materials through utilization of an in situ reaction to produce a uniform dispersion of a fine particulate reinforcement phase. The process includes forming a melt of a first material, and then introducing particles of a second material into the melt and subjecting the melt to high-intensity acoustic vibration. A chemical reaction initiates between the first and second materials to produce reaction products in the melt. The reaction products comprise a solid particulate phase, and the high-intensity acoustic vibration fragments and/or separates the reaction products into solid particles that are dispersed in the melt and are smaller than the particles of the second material. Also encompassed are particle-reinforced composite materials produced by such a process. 1. A particulate-reinforced composite material produced by a process comprising:forming a melt of a first material;introducing particles of a second material into the melt and subjecting the melt to high-intensity acoustic vibration, wherein the particles of the second material have a melting temperature that is higher than the temperature of the melt, wherein a chemical reaction initiates between the first and second materials that produces reaction products in the melt, the reaction products comprising a solid particulate phase in the melt, the high-intensity acoustic vibration fragmenting and/or separating the reaction products into solid particles that are dispersed in the melt and are smaller than the particles of the second material.2. The particulate-reinforced composite material according to claim 1 , wherein the composite material is a metal matrix composite material.3. The particulate-reinforced composite material according to claim 1 , wherein the first material is a metallic material.4. The particulate-reinforced composite material according to claim 1 , wherein the second material is a metallic material.5. The particulate-reinforced composite ...

HIGH-RESISTIVITY PARTICLE-MATRIX COMPOSITE MATERIALS, DOWNHOLE TOOLS INCLUDING SUCH COMPOSITE MATERIALS, AND RELATED METHODS

A particle-matrix composite material comprises a metal alloy phase, the metal alloy having a resistivity of at least about seven hundred and fifty (750) nano-ohms per meter, and a composite phase comprising ceramic particles dispersed throughout portions of the metal alloy phase. The composite phase extends throughout the particle-matrix composite material in a substantially three-dimensional network, and regions of the composite phase at least partially surround regions of the metal alloy phase that are free of the ceramic particles. Methods of forming a particle-matrix composite body include coating particles of metal alloy with relatively finer particles of ceramic, partially compacting the coated particles of metal alloy, and heating the partially compacted particles of metal alloy to form a substantially continuous metal alloy matrix with ceramic particles dispersed therein. Downhole tools including components comprising particle-matrix composite materials are also disclosed. 1. A downhole tool , comprising: a metal alloy phase, the metal alloy of the metal alloy phase having a resistivity of at least about seven hundred and fifty (750) nano-ohms per meter; and', 'a composite phase comprising ceramic particles dispersed throughout portions of the metal alloy phase, wherein the composite phase extends throughout the particle-matrix composite material in a substantially three-dimensional network, and wherein regions of the composite phase at least partially surround regions of the metal alloy phase that are free of the ceramic particles., 'a tool body including at least one component comprising a particle-matrix composite material, the particle-matrix composite material comprising2. The downhole tool of claim 1 , wherein the metal alloy comprises at least iron claim 1 , carbon claim 1 , and manganese.3. The downhole tool of claim 2 , wherein the mass ratio of manganese to carbon in the metal alloy is about 10:1 or more.4. The downhole tool of claim 3 , wherein ...

HARD WELD OVERLAYS RESISTANT TO RE-HEAT CRACKING

A hard weld overlay which is resistant to cracking when re-heated, and a method for designing such alloys, is disclosed. The alloys are able to resist re-heat cracking through prevention of the precipitation and/or growth of embrittling carbide, borides, or borocarbides at elevated temperatures. In one embodiment, the thermodynamics of the alloy system possess only primary carbides and secondary ferrite carbides. 1. (canceled)2. A hardfacing weld deposit comprising:a hardness of at least 60 HRC; and an iron-based matrix; and', 'carbides and/or borides;, 'a microstructure comprisingwherein the carbides and/or borides comprise only carbides and/or borides which precipitate prior to solidification of the iron-based matrix.3. The deposit of claim 2 , wherein the carbides and/or borides are selected from the group consisting of titanium boride claim 2 , niobium carbide claim 2 , chromium boride claim 2 , iron-chromium boride claim 2 , and combinations thereof4. The deposit claim 2 , wherein the deposit does not form additional carbides or borides when re-heated to a range of 800° C. to 1300° C. for 1 s to 180 s.5. The deposit of claim 2 , wherein the deposit does not form additional carbides or borides when re-heated to a range of 900° C. to 1200° C. for 1 s to 180 s.6. The deposit of claim 2 , wherein the deposit does not form additional carbides or borides when re-heated to a range of 1000° C. to 1100° C. for 1 s to 180 s.8. A hardfacing weld deposit comprising:a hardness of at least 60 HRC; anda stable carbide and/or boride structure;wherein a mole fraction of the stable carbide and/or boride structure does not change by more than 25% when reheated.9. The deposit of claim 8 , wherein the stable carbide and/or boride structure in the deposit does not change when re-heated to a range of 800° C. to 1300° C. for 1 s to 180 s.10. The deposit of claim 8 , wherein the mole fraction of the stable carbide and/or boride structure does not change by more than 10% when reheated. ...

High Entropy Alloy Having Composite Microstructure and Method of Manufacturing the Same

A method of making a metallic alloy, more particularly, a high-entropy alloy with a composite structure that exhibits high strength and good ductility, and is used as a component material in electromagnetic, chemical, shipbuilding, machinery, and other applications, and in extreme environments, and the like. 1. A method of manufacturing a high-entropy alloy having a composite structure , comprising:preparing metallic elements comprising, by weight %, Fe greater than 5% to 35% or less, Mn greater than 5% to 35% or less, Ni greater than 5% to 35% or less, and Co greater than 5% to 35% or less, and comprising at least one of Cu greater than 3% to 40% or less and Ag greater than 3% to 40% or less;manufacturing an alloy by melting the metallic elements having been prepared in one of casting, arc melting, and powder metallurgy methods;homogenization heat treating the alloy having been manufactured; andcooling the alloy after the homogenization heat treating.2. The method of manufacturing a high-entropy alloy having a composite structure of claim 1 , wherein the homogenization heat treating is performed while the alloy is maintained in a temperature range of 900° C. to 1200° C. for 1 hour to 48 hours.3. The method of manufacturing a high-entropy alloy having a filamentary composite structure of claim 1 , further comprising:performing deformation processing,wherein the deformation processing includes hot working, rolling, drawing, at room temperature and elevated temperatures. This application is a divisional of application Ser. No. 15/455,649, filed Mar. 10, 2017, which claims the benefit of Korean Patent Application No. 10-2016-0029570, filed on Mar. 11, 2016, the disclosures of which are hereby incorporated in their entirety by reference.The present disclosure relates to a metal alloy for a component material used in electromagnetic, chemical, shipbuilding, machinery, and other applications, in addition to components, structural materials, and the like, used in an ...

Degradable and/or Deformable Diverters and Seals

A variable stiffness engineered degradable ball or seal having a degradable phase and a stiffener material. The variable stiffness engineered degradable ball or seal can optionally be in the form of a degradable diverter ball or sealing element which can be made neutrally buoyant. 1. A method of forming a temporary seal in a well formation that includes:a. providing a variable stiffness or deformable first degradable component capable of forming a fluid seal;b. combining said first degradable component with a fluid to be inserted into said well formation;c. inserting said fluid including said first degadable component into said well formation to cause said first degradable component to be positioned at or at least partially in an opening located in the well formation that is to be partially or fully sealed;d. causing said first degradable component located at or at least partially in said opening to deform to at least partially form a seal in said opening to partially or fully block or divert a flow of said fluid into and/or through said opening, said first degradable component at least partially deformed by fluid pressure of said fluid;e. optionally causing a plurality of said first degradable component to agglomerate with one another to at least partially form a seal in said opening so as to partially or fully block or divert a flow of said fluid into and/or through said opening, said plurality of said first degradable component at least partially agglomerated together by fluid pressure of said fluid;f. performing operations such as drilling, circulating, pumping, and/or hydraulic fracturing in said well formation for a period of time after said first degradable component has deformed and optionally agglomerated and has at least partially sealed said opening; and,g. causing said first degradable component to partially or fully degrade to cause said first degradable component to be partially or fully removed from said opening to thereby allow 80-100% of fluid flow ...

HIGH STRENGTH, FLOWABLE, SELECTIVELY DEGRADABLE COMPOSITE MATERIAL AND ARTICLES MADE THEREBY

A lightweight, selectively degradable composite material includes a compacted powder mixture of a first powder and a second powder. The first powder comprises first metal particles comprising Mg, Al, Mn, or Zn, having a first particle oxidation potential. The second powder comprises low-density ceramic, glass, cermet, intermetallic, metal, polymer, or inorganic compound second particles. At least one of the first particles and the second particles includes a metal coating layer of a coating material disposed on an outer surface having a coating oxidation potential that is different than the first particle oxidation potential. The compacted powder mixture has a microstructure comprising: a matrix comprising the first metal particles; the second particles dispersed within the matrix; and a network comprising interconnected adjoining metal coating layers that extends throughout the matrix, the lightweight, selectively degradable composite material having a density of about 3.5 g/cmor less. 1. A lightweight , selectively degradable composite material comprising a compacted powder mixture of a first powder , the first powder comprising first metal particles comprising Mg , Al , Mn , or Zn , or an alloy of any of the above , or a combination of any of the above , having a first particle oxidation potential , and a second powder , the second powder comprising low-density ceramic , glass , cermet , intermetallic , metal , polymer , or inorganic compound second particles , at least one of the first particles and the second particles comprising a metal coating layer of a coating material disposed on an outer surface having a coating oxidation potential that is different than the first particle oxidation potential , the compacted powder mixture having a microstructure comprising:a matrix comprising the first metal particles;the second particles dispersed within the matrix; and{'sup': '3', 'a network comprising interconnected adjoining metal coating layers that extends ...

FIBER-REINFORCED METAL-, CERAMIC-, and METAL/CERAMIC-MATRIX COMPOSITE MATERIALS AND METHODS THEREFOR

A method is disclosed for forming extrudate filament, which consist essentially of fiber, organic binder, and metal and/or ceramic. The extrudate filament can be spooled, or used to form preforms, and/or assemblages of preforms. In further methods, the extrudate filament and/or preforms can be used to fabricate fiber-reinforced metal-matrix or ceramic-matrix or metal and ceramic matrix composite parts, which consist essentially of fiber in a matrix of metal, or ceramic, or metal and ceramic, respectively.

ALUMINUM-FIBER COMPOSITES CONTAINING INTERMETALLIC PHASE AT THE MATRIX-FIBER INTERFACE

A solid aluminum-fiber composite comprising: (i) an aluminum-containing matrix comprising elemental aluminum; (ii) coated or uncoated fibers embedded within said aluminum-containing matrix, wherein said fibers have a different composition than said aluminum-containing matrix and impart additional strength to said aluminum-containing matrix as compared to said aluminum-containing matrix in the absence of said fibers embedded therein; and (iii) an intermetallic layer present as an interface between each of said fibers and the aluminum-containing matrix, wherein said intermetallic layer has a composition different from said aluminum-containing matrix and said fibers, and said intermetallic layer contains at least one element that is also present in the aluminum-containing matrix and at least one element present in the fibers, whether from the coated or interior portion of the fibers. Methods of producing the above-described composite are also described. 1. A solid aluminum-fiber composite comprising:(i) an aluminum-containing matrix comprising elemental aluminum;(ii) fibers embedded within said aluminum-containing matrix, wherein said fibers have a different composition than said aluminum-containing matrix and impart additional strength to said aluminum-containing matrix as compared to said aluminum-containing matrix in the absence of said fibers embedded therein; and(iii) an intermetallic layer present as an interface between each of said fibers and the aluminum-containing matrix, wherein said intermetallic layer has a composition different from said aluminum-containing matrix and said fibers, and said intermetallic layer contains at least one element that is also present in the aluminum-containing matrix and at least one element from said fibers.2. The solid aluminum-fiber composite of claim 1 , wherein said aluminum-containing matrix is composed of only aluminum.3. The solid aluminum-fiber composite of claim 1 , wherein said aluminum-containing matrix is composed of ...

ALUMINUM ALLOY POWDER METAL COMPACT

A powder metal compact is disclosed. The powder metal compact includes a cellular nanomatrix comprising a nanomatrix material. The powder metal compact also includes a plurality of dispersed particles comprising a particle core material that comprises an Al—Cu—Mg, Al—Mn, Al—Si, Al—Mg, Al—Mg—Si, Al—Zn, Al—Zn—Cu, Al—Zn—Mg, Al—Zn−Cr, Al—Zn—Zr, or Al—Sn—Li alloy, or a combination thereof, dispersed in the cellular nanomatrix. 1. A powder metal compact , comprising:a cellular nanomatrix comprising a nanomatrix material, the nanomatrix material comprising Ni, Fe, Cu, Al, Zn, Mn, or Si, or an oxide, nitride, carbide, intermetallic compound or cermet comprising at least one of the foregoing, or a combination thereof;a plurality of dispersed particles comprising a particle core material that comprises an Al—Cu—Mg, Al—Mn, Al—Si, Al—Mg, Al—Mg—Si, Al—Zn, Al—Zn—Cu, Al—Zn—Mg, Al—Zn—Cr, Al—Zn—Zr, or Al—Sn—Li alloy, or a combination thereof, dispersed in the cellular nanomatrix.2. The powder metal compact of claim 1 , wherein the particle core material comprises claim 1 , in weight percent of the alloy claim 1 , about 0.05% to about 2.0% Mg; about 0.1% to about 0.8% Si; about 0.7% to about 6.0% Cu; about 0.1% to about 1.2% Mn; about 0.1% to about 0.8% Zn; about 0.05% to about 0.25% Ti; and about 0.1%-1.2% Fe claim 1 , and the balance Al and incidental impurities.3. The powder metal compact of claim 1 , wherein the particle core material comprises claim 1 , in weight percent of the alloy claim 1 , about 0.5% to about 6.0% Mg; about 0.05% to about 0.30% Zn; about 0.10% to about 1.0% Mn; about 0.08% to about 0.75% Si and the balance Al and incidental impurities.4. The powder metal compact of claim 1 , wherein the particle core material or the nanomatrix material claim 1 , or a combination thereof claim 1 , comprises a nanostructured material.5. The powder metal compact of claim 4 , wherein the nanostructured material has a grain size less than about 200 nm.6. The powder metal compact ...

Dual-phase hot extrusion of metals

The present disclosure provides a method of dual-phase hot metal extrusion comprising (i) providing a load carrier made of a first metal material, wherein the load carrier comprises one or more load chambers containing a second metal material, wherein the melting point of the second metal material is lower than the melting point of the first metal material, (ii) heating the load carrier to a temperature above the melting point of the second metal material and suitable for extrusion of the load carrier, and (iii) extruding the load carrier to form an extruded product. The present disclosure also provides apparatuses for accomplishing the dual-phase hot extrusion of metals and products resulting from such processes.

Variable-density composite articles, preforms and methods

A metal matrix composite article that includes at least first and second regions, first and second reinforcement materials, a metal matrix composite material occupying the second region of the body and comprising a metal matrix material and the second reinforcement component, a preform positioned in the first region of the body and infiltrated by at least the metal matrix material of the metal matrix composite material. The article further includes a transition region located proximate an outer surface of the preform that includes a distribution of the second reinforcement component comprising a density increasing according to a second gradient in a direction toward the outer surface of the preform.

VARIABLE-DENSITY COMPOSITE ARTICLES, PREFORMS AND METHODS

A metal matrix composite article that includes at least first and second regions, first and second reinforcement materials, a metal matrix composite material occupying the second region of the body and comprising a metal matrix material and the second reinforcement component, a preform positioned in the first region of the body and infiltrated by at least the metal matrix material of the metal matrix composite material. The article further includes a transition region located proximate an outer surface of the preform that includes a distribution of the second reinforcement component comprising a density increasing according to a second gradient in a direction toward the outer surface of the preform. 1. A metal matrix composite article , comprising:a cast, reinforced body, the body comprising a first region and a second region, the first region having more reinforcement than the second region;a first reinforcement component;a second reinforcement component;a metal matrix composite material occupying the second region of the body and comprising a metal matrix material and the second reinforcement component; a first end,', 'a second end,', 'an outer surface,', 'the first reinforcement component, the first reinforcement component comprising a density increasing between the first end of the preform and the second end of the preform according to a first gradient, and', 'a porous structure configured to allow passage of the metal matrix material into the preform and to block or reduce passage of the first reinforcement component into the preform; and, 'a preform positioned in the first region of the body and infiltrated by at least the metal matrix material of the metal matrix composite material, the preform comprising'}a transition region of the body located proximate the outer surface of the preform, the transition region comprising a distribution of the second reinforcement component adjacent to the outer surface of the preform, the distribution of the second ...

METAL MATRIX COMPOSITE, EVAPORATION MASK MADE FROM THE SAME AND MAKING METHOD THEREOF

The present application discloses a metal matrix composite for evaporation mask, comprising matrix and reinforcing phase dispersed in the matrix, wherein the matrix is iron-nickel alloy, the reinforcing phase is non-metallic particles, and the volume ratio of the non-metallic particles in the matrix is in the range from 20 vol % to 50 vol %. The present application also provides an evaporation mask made from the metal matrix composite and a making method thereof. The metal matrix composite according to the present application has a decreased density and an elevated elasticity modulus, and thereby is useful to prevent the evaporation mask from drooping due to gravity. Further, the method for making the evaporation mask according to the present application is beneficial to improve the overall performance of the evaporation mask, save raw materials and reduce the cost. 1. A metal matrix composite for an evaporation mask , comprising matrix and reinforcing phase dispersed in the matrix , wherein the matrix is iron-nickel alloy , the reinforcing phase is non-metallic particles , and the volume ratio of the non-metallic particles in the matrix is in the range from 20 vol % to 50 vol %.2. The metal matrix composite according to claim 1 , wherein the iron-nickel alloy contains 30 wt % to 36 wt % of nickel.3. The metal matrix composite according to claim 2 , wherein the iron-nickel alloy contains 35.4 wt % of nickel.4. The metal matrix composite according to claim 1 , wherein the volume ratio of the non-metallic particles in the matrix is 50 vol %.5. The metal matrix composite according to claim 1 , wherein the non-metallic particles are selected from a group consisting of SiC particles claim 1 , AlOparticles and AlN particles.6. The metal matrix composite according to claim 1 , wherein the non-metallic particles have a diameter from 1 μm to 30 μm.7. An evaporation mask made from the metal matrix composite according to .8. A method for making the evaporation mask according ...

Composite and multilayered silver films for joining electrical and mechanical components

Materials for die attachment such as silver sintering films may include reinforcing, modifying particles for enhanced performance. Methods for die attachment may involve the of such materials.

Metal matrix composites

A method of forming a metal matrix composite component comprises: providing a body defining a mould cavity; covering a first surface of the mould cavity with a first reinforcement material; restraining the first reinforcement material relative to the body to restrict movement of the first reinforcement material in the mould cavity; adding a second reinforcement material to the mould cavity, the second reinforcement material being in contact with the first reinforcement material; adding molten metal to the mould cavity such that the first reinforcement material and the second reinforcement material become embedded in a continuous metal matrix when the molten metal solidifies.

Turbomachine components manufactured with carbon nanotube comopsites

A turbomachine component and method for fabricating the turbomachine component are provided. The turbomachine component may include a matrix material and carbon nanotubes combined with the matrix material. The matrix material may include a metal or a polymer. The carbon nanotubes may be contacted with the metal to form a metal-based carbon nanotube composite, and the metal-based carbon nanotube composite may be processed to fabricate the turbomachine component.

MARTENSITIC OXIDE DISPERSION STRENGTHENED ALLOY WITH ENHANCED HIGH-TEMPERATURE STRENGTH AND CREEP PROPERTY, AND METHOD OF MANUFACTURING THE SAME

The present application discloses a martensitic oxide dispersion-strengthened alloy having enhanced high-temperature strength and creep properties. The alloy includes chromium (Cr) of 8 to 12% by weight, yttria (YO) of 0.1 to 0.5% by weight, carbon (C) of 0.02 to 0.2% by weight, molybdenum (Mo) of 0.2 to 2% by weight, titanium (Ti) of 0.01 to 0.3% by weight, zirconium (Zr) of 0.01 to 0.2% by weight, nickel (Ni) of 0.05 to 0.2% by weight and the balance of iron (Fe). The application also discloses a method of making the alloy. 1. A martensitic oxide dispersion-strengthened alloy comprising:chromium (Cr) of 8 to 12% by weight,{'sub': 2', '3, 'yttria (YO) of 0.1 to 0.5% by weight,'}carbon (C) of 0.02 to 0.2% by weight,molybdenum (Mo) of 0.2 to 2% by weight,titanium (Ti) of 0.01 to 0.3% by weight,zirconium (Zr) of 0.01 to 0.2% by weight,nickel (Ni) of 0.05 to 0.2% by weight, andthe balance of iron (Fe).2. The martensitic oxide dispersion-strengthened alloy of claim 1 , wherein the sum of titanium (Ti) claim 1 , zirconium (Zr) and nickel (Ni) in the alloy is 0.5% by weight or less with reference to the total weight of the alloy.3. The martensitic oxide dispersion-strengthened alloy of claim 1 , wherein the martensitic oxide dispersion-strengthened alloy is shaped to form at least one of a a nuclear fuel cladding claim 1 , a wire claim 1 , an end plug and a duct of a fast reactor.4. A method of manufacturing a martensitic oxide dispersion-strengthened alloy having high-temperature strength and creep properties claim 1 , the method comprising:{'sub': 2', '3, 'mixing yttria (YO) powder with powder of carbon (C), iron (Fe), chromium (Cr), molybdenum (Mo), titanium (Ti), zirconium (Zr) and nickel (Ni) to provide alloy powder;'}charging alloy powder in a container and degassing the alloy powder;hot-working the degassed alloy powder to produce an oxide dispersion-strengthened alloy; andcold-working the hot-wrought oxide dispersion-strengthened alloy.5. The method of claim 4 , ...

Fiber-Reinforced Copper-Based Brake Pad for High-speed railway train, and Preparation and Friction Braking Performance Thereof

The present disclosure relates to a fiber-reinforced copper-based brake pad for high-speed railway train, and preparation and friction braking performance thereof. The fiber-reinforced copper-based brake pad for high-speed railway train comprises 80-98.5 wt. % metal powder, 1-15 wt. % non-metal powder and 0.5-5 wt. % fiber component. In addition, some components are added in a specific proportion to achieve optimal performance. The copper-based powder metallurgy brake pad is obtained by powder mixing, cold-pressing and sintering with constant pressure. The friction braking performance of the obtained brake pad is tested according to a braking procedure consisting of three stages, i.e., the first stage with low-pressure and low-speed, the second stage with high-pressure high-speed and the continuous emergency braking third stage with high-pressure and high-speed. The brake pad has advantages including higher and more stable friction coefficient, higher fade and wear resistance and slighter damage to brake disc at high speeds. 1. A fiber-reinforced copper-based powder metallurgy brake pad for high-speed railway train , wherein the composition of the copper-based powder metallurgy brake pad comprises metal powder , non-metal powder and a fiber component;the weight percentage of the metal powder is 80-98.5%;the weight percentage of the non-metal powder is 1-20%; andthe weight percentage of the fiber component is 0.5-5%.2. The fiber-reinforced copper-based powder metallurgy brake pad according to claim 1 , wherein: the weight percentages of the components of the metal powder are as follows: copper powder: 45-65%; iron powder: 15-30%; anatase titanium dioxide powder: 1-10%; molybdenum disulfide powder: 1-5%; chromium powder: 1-10%; high carbon ferrochrome powder: 1-10%; the particle size of the copper powder is 48-75 μm; the particle size of the iron powder is 45-150 μm; the particle size of the titanium oxide powder is less than 10 μm claim 1 , the particle size of the ...

PREPARATION METHOD FOR MAGNESIUM MATRIX COMPOSITE

The invention relates to a preparation method for a magnesium matrix composite. The preparation method comprises the following steps: (1) preparing magnesium ingots as raw materials and salt flux and reinforcements; (2) placing the salt flux in a crucible, performing heating to prepare salt flux melts, adding the reinforcements; (3) performing pouring into a normal-temperature crucible, and performing cooling to obtain precursors; (4) adding the raw materials in an iron crucible, and performing melting at 953K-1043K; (5) placing the precursors in raw material melt, after stirring, under a condition of 953K-993K, performing standing so that scum and melt are obtained; and (6) removing the scum, lowering temperature to 973K-982K, and performing casting. The method provided by the present invention is simple in process and low in cost. The method can be used for preparing bulk structural members of the magnesium matrix composite, and can be used for automatic production. 1. A preparation method for a magnesium matrix composite , comprising:{'sub': 2', '3', '2', '2', '3', '2', '2, '(1) preparing magnesium ingots as raw materials; preparing salt flux and reinforcements, wherein the salt flux is a mixture of barium chloride, magnesium chloride, sodium chloride and calcium chloride, the barium chloride accounts for 35-50% of a total mass of the salt flux, the magnesium chloride accounts for 10-20% of a total mass of the salt flux, the sodium chloride accounts for 10-20% of a total mass of the salt flux, a balance is the calcium chloride and impurities, the impurities account for no more than 1% of the total mass of the salt flux, the reinforcements are elementary metal, rare earth oxides, carbides, borides or metal oxides, the elementary metal is W, Mo or Ni, the rare earth oxides are LaO, CeOor YO, the carbides are TiC or SiC, the borides are ZrB, the metal oxides are MgO or SiO, the reinforcements are 0.1%-30% of a total volume of the raw materials, and the ...

Manufacture of Controlled Rate Dissolving Materials

A castable, moldable, or extrudable structure using a metallic base metal or base metal alloy. One or more insoluble additives are added to the metallic base metal or base metal alloy so that the grain boundaries of the castable, moldable, or extrudable structure includes a composition and morphology to achieve a specific galvanic corrosion rates partially or throughout the structure or along the grain boundaries of the structure. The insoluble additives can be used to enhance the mechanical properties of the structure, such as ductility and/or tensile strength. The insoluble particles generally have a submicron particle size. The final structure can be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final structure as compared to the non-enhanced structure. 1. A metal cast structure that includes a base metal or base metal alloy and a plurality of insoluble particles disbursed in said metal cast structure , said insoluble particles having a melting point that is greater than a melting point of said base metal or base metal alloy , at least 50% of said insoluble particles located in grain boundary layers of said metal cast structure.2. The metal cast structure as defined in claim 1 , wherein said insoluble particles have a selected size and shape to control a dissolution rate of said metal cast structure.3. The metal cast structure as defined in claim 1 , wherein said insoluble particles have different galvanic potential than a galvanic potential of said base metal or base metal alloy.4. The metal cast structure as defined in claim 3 , wherein said insoluble particles have said galvanic potential that is more anodic than said galvanic potential of said base metal or base metal alloy.5. The metal cast structure as defined in claim 3 , wherein said insoluble particles have said galvanic potential that is more cathodic than said galvanic potential of said base metal or base ...

HETEROGENEOUS COMPOSITION, ARTICLE COMPRISING HETEROGENEOUS COMPOSITION, AND METHOD FOR FORMING ARTICLE

A heterogeneous composition is disclosed, including an alloy mixture and a ceramic additive. The alloy mixture includes a first alloy having a first melting point of at least a first threshold temperature, and a second alloy having a second melting point of less than a second threshold temperature. The second threshold temperature is lower than the first threshold temperature. The first alloy, the second alloy, and the ceramic additive are intermixed with one another as distinct phases. An article is disclosed including a first portion including a material composition, and a second portion including the heterogeneous composition. A method for forming the article is disclosing, including applying the second portion to the first portion. 1. A heterogeneous composition , comprising: a first alloy having a first melting point of at least a first threshold temperature; and', 'a second alloy having a second melting point of less than a second threshold temperature, the second threshold temperature being lower than the first threshold temperature; and, 'an alloy mixture, includinga ceramic additive,wherein the first alloy, the second alloy, and the ceramic additive are intermixed with one another as distinct phases.2. The heterogeneous composition of claim 1 , wherein the first threshold temperature is about 2 claim 1 ,400° F. claim 1 , and the second threshold temperature is about 2 claim 1 ,350° F.3. The heterogeneous composition of claim 1 , wherein the first alloy is selected from the group consisting of a superalloy claim 1 , a hard-to-weld (HTW) alloy claim 1 , a refractory alloy claim 1 , a nickel-based superalloy claim 1 , a cobalt-based superalloy claim 1 , an iron-based superalloy claim 1 , an iron-based alloy claim 1 , a steel alloy claim 1 , a stainless steel alloy claim 1 , a cobalt-based alloy claim 1 , a nickel-based alloy claim 1 , a titanium-based alloy claim 1 , a titanium aluminide claim 1 , GTD 111 claim 1 , GTD 444 claim 1 , HAYNES 188 claim 1 , ...

GRAPHENE COPPER PANTOGRAPH PAN MATERIAL FOR HIGH-SPEED TRAINS AND PREPARATION METHOD THEREOF

The present invention provides a graphene copper pantograph pan material for high-speed trains and a preparation method thereof, and the pan uses graphene as a reinforcing material, copper and iron as base materials, coke powder and graphite fiber as self-lubricating wear-resistant materials, and titanium, tungsten and molybdenum as additives. After being uniformly mixed, all the components are directly formed by hot pressing. The pantograph pan prepared by the present invention has the advantages of favorable electrical conductivity, wear resistance, impact resistance, ablation resistance and the like, and has little wear to overhead lines. The pan not only has simple preparation process, but also has much better performance than the conventional carbon pans and metal impregnated pans. The pan material is not only suitable for pantograph pans for high-speed trains such as high-speed rails and bullet trains, but also suitable for electric contact materials for low-speed trains such as subways. 1. A method for preparing a graphene copper pantograph pan material for high-speed trains , wherein the method comprises the following steps:(1) first, uniformly dispersing graphene, additive and carbon nanotube in a polyvinyl alcohol solution with the concentration of 8.5% according to the mass ratio of the components of the graphene copper pantograph pan material, wherein the mass ratio of graphene to polyvinyl alcohol is 1:10, then adding copper powder, iron powder, coke and graphite fiber to the mixed solution in sequence, and stirring uniformly;the graphene copper pantograph pan material comprises the following components by mass ratio: wherein 2.0-11.0 wt % of graphene, 30.5-60.5 wt % of copper powder, 1.0-19.0 wt % of iron powder, 8.0-37.0 wt % of coke, 1.0-5.0 wt % of carbon nanotube, 0.4-6.2 wt % of graphite fiber and 0.06-0.25 wt % of additive; the additive is formed by mixing titanium powder of 600-800 meshes, tungsten powder of 800-1200 meshes and molybdenum powder ...

SELF-REPAIRING METAL ALLOY MATRIX COMPOSITES, METHODS OF MANUFACTURE AND USE THEREOF AND ARTICLES COMPRISING THE SAME

Disclosed herein is a composite comprising a metal alloy matrix; where the metal alloy matrix comprises aluminum in an amount greater than 50 atomic percent; a first metal and a second metal; where the first metal is different from the second metal; and where the metal alloy matrix comprises a low temperature melting phase and a high temperature melting phase; where the low temperature melting phase melts at a temperature that is lower than the high temperature melting phase; and a contracting constituent; where the contracting constituent exerts a compressive force on the metal alloy matrix at a temperature between a melting point of the low temperature melting phase and a melting point of the high temperature melting phase or below the melting points of the high and low temperature melting phases. 1. A composite comprising:a metal alloy matrix; where the metal alloy matrix comprises aluminum in an amount greater than 50 atomic percent to 99 atomic percent; a first metal and a second metal; where the first metal is different from the second metal; and where the metal alloy matrix comprises a low temperature melting phase and a high temperature melting phase; where the low temperature melting phase melts at a temperature that is lower than the high temperature melting phase; anda contracting constituent; where the contracting constituent is a shape memory alloy, where the contracting constituent exerts a compressive force on the metal alloy matrix at a temperature between a melting point of the low temperature melting phase and a melting point of the high temperature melting phase or below the temperature of the low temperature melting phase.2. The composite of claim 1 , where the first metal is copper and where the second metal is silicon.3. The composite of claim 1 , where the aluminum is present in an amount of 65 to 96 atomic percent claim 1 , based on a total atomic composition of the metal alloy matrix.4. The composite of claim 2 , where the copper is present ...

ADDITIVES FOR IMPROVING THE CASTABILITY OF ALUMINUM-BORON CARBIDE COMPOSITE MATERIAL

The present disclosure provides additives capable of undergoing a peritectic reaction with boron in aluminum-boron carbide composite materials. The additive may be selected from the group consisting of vanadium, zirconium, niobium, strontium, chromium, molybdenum, hafnium, scandium, tantalum, tungsten and combination thereof, is used to maintain the fluidity of the molten composite material, prior to casting, to facilitate castability. 1. A cast composite material comprising (i) aluminum , (ii) products of a peritectic reaction between an additive and boron , (iii) dispersed boron carbide particles and (iv) optionally titanium , wherein:the additive is selected from the group consisting of chromium, molybdenum, vanadium, niobium, zirconium, strontium, scandium and any combination thereof; anda sample of the composite material has a fluidity, after having been heated, prior to casting, to a temperature of about 700° C. for about 120 minutes, corresponding to a cast length of at least 100 mm when measured using a mold having a groove for containing the sample, the groove having a width of about 33 mm, a height of between about 6.5 mm and about 4.0 mm and being downwardly inclined, from an horizontal axis, of about 10°.2. The cast composite material of claim 1 , wherein the cast length is at least 190 mm.3. The cast composite material of claim 1 , wherein the cast composite material is submitted to holding during a holding time and to casting during a casting time and wherein the combination of the holding time and the casting time is at least 120 minutes.4. (canceled)5. The cast composite material of claim 1 , wherein the additive is scandium.6. The cast composite material of claim 1 , wherein the additive is strontium.7. The cast composite material of claim 1 , wherein the additive is zirconium.8. The cast composite material of claim 1 , wherein the concentration (v/v) of the dispersed boron carbide particles is between 4% and 40% with respect to the total volume of ...

Lightweight, robust, wear resistant components comprising an aluminum matrix composite

Rotor, disc, chain ring, and sprocket components are manufactured from a fine particle reinforced metal matrix composite material. The metal matrix composite may be an aluminum or aluminum alloy matrix. The fine reinforcement particles have a particle size from 5 microns to 0.3 microns. These reinforcement particles are dispersed in the matrix.

Self-Actuating Device For Centralizing an Object

The invention is directed to the interventionless activation of wellbore devices using dissolving and/or degrading and/or expanding structural materials. Engineered response materials, such as those that dissolve and/or degrade or expand upon exposure to specific environment, can be used to centralize a device in a wellbore.

HEAT DISSIPATION COMPONENT FOR SEMICONDUCTOR ELEMENT

A heat dissipation component for a semiconductor element includes: a composite part containing 50-80 vol % diamond powder with the remainder having metal including aluminum, the diamond powder having a particle diameter volume distribution first peak at 5-25 μm and a second peak at 55-195 μm. A ratio between a volume distribution area at particle diameters of 1-35 μm and a volume distribution area at particle diameters of 45-205 μm is 1:9 to 4:6; surface layers on both composite part principal surfaces, each of the surface layers containing 80 vol % or more metal including aluminum and having a film thickness of 0.03-0.2 mm; and a crystalline Ni layer and an Au layer on at least one of the surface layers, the crystalline Ni layer having a film thickness of 0.5-6.5 μm, and the Au layer having a film thickness of 0.05 μm or larger.

SELF-ACTUATING DEVICE FOR CENTRALIZING AN OBJECT

The invention is directed to the interventionless activation of wellbore devices using dissolving and/or degrading and/or expanding structural materials. Engineered response materials, such as those that dissolve and/or degrade or expand upon exposure to specific environment, can be used to centralize a device in a wellbore. 1. A centralizing device that is configured to be positioned about an outer surface of a bore member , said centralizing device includes a body , an active material selected from the group consisting of an expandable material and a degradable material , and first and second of well bore wall engagement members , said first and second well bore wall engagement members include one or more structures selected from the group consisting of a slat , a wing , a bow , a leaf , a ribbon , an extension and a rib , said first and second well bore wall engagement members configured to move from a non-deployed position to a deployed position , said active material configured to cause said first and second well bore wall engagement members to move from said non-deployed position to said deployed position , a maximum outer perimeter of said centralizing device is greater in size when said first and second well bore wall engagement members are in said deployed position as compared to when said first and second well bore wall engagement members are in said non-deployed position , at least a portion of said first and second well bore wall engagement members positioned farther from a central axis of said body when in said deployed position than when said first and second well bore wall engagement members are in said non-deployed position.2. The centralizing device as defined in claim 1 , wherein said first and second well bore wall engagement members are formed of a bendable material and said expandable material claim 1 , said expandable material is connected to at least a portion of said bendable material claim 1 , said expandable material is configured to cause ...

NANOCARBON-REINFORCED ALUMINIUM COMPOSITE MATERIALS AND METHOD FOR MANUFACTURING THE SAME

A nanocarbon-reinforced aluminum composite material and a method of manufacturing the same are provided. The method of manufacturing a nanocarbon-reinforced aluminum composite material is characterized in that composite powder, in which ceramic-coated nanocarbon is surrounded by metal powder, is added to molten aluminum and then casting the molten aluminum with the added composite powder. 1. A method of manufacturing a nanocarbon-reinforced aluminum composite material , comprising:adding composite powder, in which ceramic-coated nanocarbon is surrounded by metal powder, to molten aluminum; andcasting the molten aluminum with the added composite powder.2. The method of claim 1 , further comprising steps of:prior to adding the composite powder to molten aluminum and casting the molten aluminum with the added composite powder,coating nanocarbon with ceramic; andmixing the ceramic-coated nanocarbon with metal powder to prepare the composite powder such that the ceramic-coated nanocarbon is surrounded by the metal powder.3. The method of claim 2 , wherein the nanocarbon includes at least one selected from the group consisting of carbon nanotube claim 2 , carbon nanofiber claim 2 , and graphene; andthe ceramic includes at least one selected from the group consisting of oxide, carbide, nitride, and boride.4. The method of claim 3 , wherein the metal powder is aluminum or a metal alloyed with the aluminum or reacted with the aluminum to form an intermetallic compound.5. The method of claim 1 , wherein the ceramic-coated nanocarbon is mixed with the metal powder by ball milling such that the ceramic-coated nanocarbon is surrounded by the metal powder.6. A nanocarbon-reinforced aluminum composite material claim 1 , manufactured by adding composite powder claim 1 , in which ceramic-coated nanocarbon is surrounded by metal powder claim 1 , to molten aluminum claim 1 , and then casting the molten aluminum with the added composite powder. The present application claims the ...

ALUMINUM ALLOY COMPOSITION WITH IMPROVED ELEVATED TEMPERATURE MECHANICAL PROPERTIES

An aluminum alloy includes, in weight percent, 0.50-1.30% Si, 0.2-0.60% Fe, 0.15% max Cu, 0.5-0.90% Mn, 0.6-1.0% Mg, and 0.20% max Cr, the balance being aluminum and unavoidable impurities. The alloy may include excess Mg over the amount that can be occupied by Mg—Si precipitates. The alloy may be utilized as a matrix material for a composite that includes a filler material dispersed in the matrix material. One such composite may include boron carbide as a filler material, and the resultant composite may be used for neutron shielding applications. 2. The alloy of claim 1 , wherein the unavoidable impurities may be present in an amount of up to 0.05 wt. % each and up to 0.15 wt. % total.3. The alloy of claim 1 , wherein the Cu content of the alloy is up to 0.1 max wt. %.4. The alloy of claim 1 , wherein the Si content of the alloy is 0.70-1.30 weight percent.5. The alloy of claim 1 , wherein the Mg content of the alloy is 0.60-0.80 weight percent.6. The alloy of claim 1 , wherein the alloy has excess magnesium over an amount that can be occupied by Mg—Si precipitates.7. The alloy of claim 6 , wherein the alloy has at least 0.25 wt. % excess magnesium.8. The alloy of claim 1 , wherein the alloy further includes up to 0.05 wt. % titanium.10. The composite material of claim 9 , wherein the filler material comprises a ceramic material.11. The composite material of claim 9 , wherein the filler material comprises boron carbide.12. The composite material of claim 11 , wherein the boron carbide filler material includes a titanium-containing intermetallic compound coating at least a portion of a surface thereof13. The composite material of claim 9 , wherein the filler material has greater neutron absorption and radiation shielding capabilities than the matrix.14. The composite material of claim 9 , wherein the filler material has a volume fraction of up to 20% in the composite material.15. The composite material of claim 9 , wherein the filler material has a higher hardness ...

METHOD AND APPARATUS FOR PRODUCING A MIXTURE OF A METALLIC MATRIX MATERIAL AND AN ADDITIVE

In a method for producing a mixture of a metallic matrix material and an additive, a metallic bulk material is molten in a multi-shaft screw machine in a heating zone thereof by means of an inductive heating device to form a metal matrix material. As the at least one housing portion of the housing of the multi-shaft screw machine is made of a non-magnetic and electrically non-conductive material at least partly in the heating zone, a high and efficient energy input for melting the metallic bulk material is achievable in a simple manner. The additive for producing the mixture is admixed to the metallic matrix material by means of treatment element shafts of the multi-shaft screw machine. 1. A method for producing a mixture of a metallic matrix material and an additive , the method comprising the following steps:providing a multi-shaft screw machine comprising a housing, a plurality of housing bores formed in the housing, at least one feed opening leading into the housing bores, a plurality of treatment element shafts arranged in the housing bores in such a way as to be drivable for rotation and an inductive heating device configured to form a heating zone, the housing comprising a plurality of interconnected housing portions arranged in succession in a conveying direction, at least one housing portion in the heating zone being made at least partially of a non-magnetic and electrically non-conductive material, the inductive heating device comprising at least one coil that surrounds the treatment element shafts and defines an inner space, the at least one housing portion being made exclusively of the non-magnetic and electrically non-conductive material in the inner space, the treatment element shafts comprising an electrically conductive material at least in the heating zone, the multi-shaft screw machine further comprising a cooling device configured to dissipate thermal losses generated in the at least one coil;feeding a metallic bulk material and an additive into ...

LOW CARBON STEEL AND CEMENTED CARBIDE WEAR PART

The present disclosure relates to a wear part having high wear resistance and strength and a method of making the same. The wear part is composed of a compound body of cemented carbide particles cast with a low-carbon steel alloy. The low-carbon steel alloy has a carbon content corresponding to a carbon equivalent Ceq=wt % C+0.3(wt % Si+wt % P) of about 0.1 to about 1.5 weight %. The wear part could include a body with a plurality of inserts of cemented carbide particles cast into a low-carbon steel alloy disposed in the body. Each of the plurality of cemented carbide inserts are coated with at least one layer of oxidation protection/chemical resistant material. The plurality of inserts are directly fixed onto a mold corresponding to the shape of the wear part. The cemented carbide inserts are then encapsulated with the molten low-carbon steel alloy to cast the cemented carbide inserts with the low-carbon steel alloy. 1. A wear part having high wear resistance and strength , comprising:a body composed of cemented carbide particles cast with a low-carbon steel alloy, wherein said low-carbon steel alloy has a carbon content corresponding to a carbon equivalent Ceq=wt % C+0.3(wt % Si+wt % P) of about 0.1 to about 1.5 weight percent.2. The wear part according to claim 1 , wherein the cemented carbide particles of the body are encapsulated by the low-carbon steel during casting to form a matrix.3. The wear part according to claim 1 , wherein the cemented carbide particles have a granular size that promotes a balance of heat capacity and heat conductivity between the low-carbon steel alloy and the cemented carbide particles for maximum wetting of the steel alloy onto the cemented carbide particles.4. The wear part according to claim 1 , wherein the volume of the cemented carbide particles is about 0.3 to about 20 cm3.5. The wear part according to claim 1 , further comprising at least one oxidation protection coating disposed on the cemented carbide particles.6. The wear ...

DRILLING TOOLS HAVING MATRICES WITH CARBIDE-FORMING ALLOYS, AND METHODS OF MAKING AND USING SAME

Drilling tools, such as drill bits, having a shank, a crown, and a plurality of abrasive cutting elements. In the case of impregnated drilling tools, the abrasive cutting elements are dispersed throughout at least a portion of the crown. In the case of surface-set drilling tools, the abrasive cutting media is secured to and projects from a cutting face of the crown. The matrix of the crown of the drilling tools includes a carbide-forming alloy that forms a direct carbide bond with at least one cutting element of the plurality of abrasive cutting elements. 1. A drilling tool , comprising:a shank having a first end and an opposing second end, the first end being adapted to be secured to a drill string component;a crown extending from the second end of the shank, the crown comprising a matrix of hard particulate material and a carbide-forming alloy, a binder, a cutting face, and a crown body between the cutting face and the shank, wherein the hard particulate material is a powdered material that comprises one or more of carbide, tungsten, iron, cobalt, and/or molybdenum and carbides, borides, or alloys thereof, and wherein the carbide-forming alloy is provided as a powder; anda plurality of abrasive cutting elements secured at least partially within the matrix of the crown, wherein the plurality of abrasive cutting elements comprise a plurality of uncoated diamond cutting elements,wherein the carbide-forming alloy of the matrix forms an intermediate metallic layer that directly bonds with the binder and the hard particulate material of the matrix, and wherein the carbide-forming alloy of the matrix forms a direct carbide bond with at least one uncoated diamond cutting element of the plurality of uncoated diamond cutting elements, wherein the drilling tool does not include oxide layers between said at least one uncoated diamond cutting element and the carbide-forming alloy of the matrix,wherein the carbide-forming alloy of the matrix is configured to convert portions of ...

Fibre pre-form manufacturing method

A method of forming a metal matrix composite (MMC). The method comprises providing a fibre ( 26 ) comprising a ceramic material coated with a metal, providing a winding head ( 12 ) having a plurality of circumferentially spaced radially extending alternate first and second finger members ( 18, 20 ), the finger members each defining a winding surface ( 22, 24 ), the winding surface of each first finger member facing a first axial direction, and the winding surface of each second finger member facing a generally opposite axial direction, wherein adjacent winding surfaces ( 22, 24 ) of the first and second finger members ( 18, 20 ) are spaced in a circumferential direction, and define an axial spacing less than the diameter of the fibre ( 26 ), and winding the fibre around the winding head ( 12 ) between the winding surfaces ( 22, 24 ) of the first and second finger members ( 18, 20 ).

Device for producing a composite component formed from carbon fibers coated with pyrolytic carbon

The invention relates to a method for producing a composite component and to a composite component, the composite component being formed from a metal-matrix composite material made of carbon fibers and a metal or a metal alloy, a fiber composite being formed from the carbon fibers, a preform being formed from the fiber composite, the carbon fibers of the fiber composite being coated with pyrolytic carbon to form the preform, the preform being at least partially infiltrated with molten metal.

METAL MATRIX COMPOSITES INCLUDING INORGANIC PARTICLES AND DISCONTINUOUS FIBERS AND METHODS OF MAKING SAME

A metal matrix composite is provided, including a metal, inorganic particles, and discontinuous fibers. The inorganic particles and the discontinuous fibers are dispersed in the metal. The metal includes aluminum, magnesium, or alloys thereof. The inorganic particles have an envelope density that is at least 30% less than a density of the metal. The metal matrix composite has a lower envelope density than the matrix metal while retaining a substantial amount of the mechanical properties of the metal. 1. A metal matrix composite , comprising:a. a metal, the metal comprising aluminum, magnesium, or alloys thereof;b. a plurality of inorganic particles, the inorganic particles having an envelope density that is at least 30% less than a density of the metal; andc. a plurality of discontinuous fibers,wherein the inorganic particles and the discontinuous fibers are dispersed in the metal.2. The metal matrix composite of claim 1 , wherein the metal matrix composite has an envelope density that is at least 8% less than the density of the metal and can withstand a strain of 1% prior to fracture.3. The metal matrix composite of claim 2 , wherein the metal matrix composite can withstand a strain of 2% prior to fracture.4. The metal matrix composite of claim 1 , wherein the metal matrix composite has a yield strength of 50 megapascals or greater.5. The metal matrix composite of claim 1 , wherein the plurality of inorganic particles comprises porous particles comprising porous metal oxide particles claim 1 , porous metal hydroxide particles claim 1 , porous metal carbonates claim 1 , porous carbon particles claim 1 , porous silica particles claim 1 , porous dehydrated aluminosilicate particles claim 1 , porous dehydrated metal hydrate particles claim 1 , zeolite particles claim 1 , porous glass particles claim 1 , expanded perlite particles claim 1 , expanded vermiculite particles claim 1 , porous sodium silicate particles claim 1 , engineered porous ceramic particles claim 1 , ...

Electronic Device Housing Utilizing A Metal Matrix Composite

A housing used for electronic devices includes a structural frame element formed of a metal matrix composite (MMC) for providing improved stiffness over other materials currently in use. The MMC is a metal matrix (formed of a material such as aluminum), with a reinforcing material (such as a glass fiber or ceramic) dispersed within the metal matrix. The composition of the reinforcing material, as well as the ratio of reinforcing material to metal, define the stiffness (resistance to bending) and/or strength (resistance to breaking) achieved, and various compositions may be used for different housings, depending on the use of the electronic device. The element may be configured as a structural frame member, or may be embedded within another material forming the structural frame element. In another embodiment, the MMC may be used to form various components of the complete housing, including the enclosure itself. 1. An electronic device housing comprisinga first structural frame element comprising a first metal matrix composite (MMC) material exhibiting a first Young's modulus value; andat least one second structural frame element comprising a second MMC material exhibiting a second Young's modulus value less than the first Young's modulus value, the first structural frame element forming a rigid housing component and the at least one second structural frame element forming a lightweight housing component., with the first and at least one second structural frame elements disposed in a non-overlapping configuration in the electronic device housing.2. The electronic device housing as defined in wherein the first structural frame element comprises larger dimensions than the at least one second structural frame element.3. The electronic device housing as defined in wherein the rigid housing component formed of the first structural frame element comprises at least one sidewall of the electronic device housing.4. The electronic device housing as defined in wherein the rigid ...

ALUMINIUM-ALUMINA COMPOSITE MATERIAL AND ITS METHOD OF PREPARATION

The present invention relates to a composite material based on aluminium and alumina, its method of manufacture, and a cable comprising said composite material as an electrical conductor element. 1. Composite material , comprising: a matrix of aluminium or aluminium alloy and particles of alumina dispersed in said matrix of aluminium or aluminium alloy.2. Composite material according to claim 1 , wherein said composite material comprises from 1 to 10 claim 1 ,000 ppm of alumina.3. Composite material according to claim 1 , wherein said composite material has an electrical conductivity of at least 45% IACS.4. Composite material according to claim 1 , wherein said composite material has a mechanical tensile strength ranging from 70 to 500 MPa.5. Composite material according to claim 1 , wherein the particles of alumina have a thickness of at least 0.1 μm.6. Composite material according to claim 1 , wherein the particles of alumina have a mean size ranging from 0.5 to 10 μm.7. Composite material according to claim 1 , wherein said composite material is a nonporous material.8. Method for preparation of a composite material having a matrix of aluminium or aluminium alloy and particles of alumina dispersed in said matrix of aluminium or aluminium alloy claim 1 , wherein said method comprises at least the following steps:i) placing in contact at least one elongated electrical conductor element of aluminium or of aluminium alloy comprising a layer of hydrated alumina with molten aluminium or a molten aluminium alloy,ii) forming a solid mass based on alumina and aluminium, andiii) breaking the layer of hydrated alumina inside the solid mass, in order to form a composite material comprising a matrix of aluminium or aluminium alloy and particles of alumina dispersed in said matrix of aluminium or aluminium alloy.9. Method according to claim 8 , wherein the layer of hydrated alumina has a thickness ranging from 4 to 20 μm.10. Method according to claim 8 , wherein step i) is ...

HYDRIDE-COATED MICROPARTICLES AND METHODS FOR MAKING THE SAME

A metal microparticle coated with metal hydride nanoparticles is disclosed. Some variations provide a material comprising a plurality of microparticles (1 micron to 1 millimeter) containing a metal or metal alloy and coated with a plurality of nanoparticles (less than 1 micron) containing a metal hydride or metal alloy hydride. The invention eliminates non-uniform distribution of sintering aids by attaching them directly to the surface of the microparticles. No method is previously known to exist which can assemble nanoparticle metal hydrides onto the surface of a metal microparticle. Some variations provide a solid article comprising a material with a metal or metal alloy microparticles coated with metal hydride or metal alloy hydride nanoparticles, wherein the nanoparticles form continuous or periodic inclusions at or near grain boundaries within the microparticles. 1. A material comprising a plurality of non-metallic microparticles that are at least partially coated with a plurality of nanoparticles containing a metal hydride or metal alloy hydride , wherein said microparticles are characterized by an average microparticle size from between 1 micron to about 1 millimeter , and wherein said nanoparticles are characterized by an average nanoparticle size less than 1 micron.2. The material of claim 1 , wherein said material is in powder form.3. The material of claim 1 , wherein said average microparticle size is between about 10 microns to about 500 microns.4. The material of claim 1 , wherein said average nanoparticle size is between about 10 nanometers to about 500 nanometers.5. The material of claim 1 , wherein said plurality of nanoparticles forms a single-layer or multiple-layer nanoparticle coating that is between about 5 nanometers to about 100 microns thick.6. The material of claim 1 , wherein said non-metallic microparticles contain one or more materials selected from the group consisting of a glass claim 1 , a ceramic claim 1 , an organic structure claim 1 ...

High Conductivity Magnesium Alloy

A castable, moldable, or extrudable magnesium-based alloy that includes one or more insoluble additives. The insoluble additives can be used to enhance the mechanical properties of the structure, such as ductility and/or tensile strength. The final structure can be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final structure as compared to the non-enhanced structure. The magnesium-based composite has improved thermal and mechanical properties by the modification of grain boundary properties through the addition of insoluble nanoparticles to the magnesium alloys. The magnesium-based composite can have a thermal conductivity that is greater than 180 W/m-K, and/or ductility exceeding 15-20% elongation to failure.

Hydride-coated microparticles and methods for making the same

A metal microparticle coated with metal hydride nanoparticles is disclosed. Some variations provide a material comprising a plurality of microparticles (1 micron to 1 millimeter) containing a metal or metal alloy and coated with a plurality of nanoparticles (less than 1 micron) containing a metal hydride or metal alloy hydride. The invention eliminates non-uniform distribution of sintering aids by attaching them directly to the surface of the microparticles. No method is previously known to exist which can assemble nanoparticle metal hydrides onto the surface of a metal microparticle. Some variations provide a solid article comprising a material with a metal or metal alloy microparticles coated with metal hydride or metal alloy hydride nanoparticles, wherein the nanoparticles form continuous or periodic inclusions at or near grain boundaries within the microparticles.

Low Thermal Stress Engineered Metal Structures

A structured multi-phase composite which include a metal phase, and a low stiffness, high thermal conductivity phase or encapsulated phase change material, that are arranged to create a composite having high thermal conductivity, having reduced/controlled stiffness, and a low CTE to reduce thermal stresses in the composite when exposed to cyclic thermal loads. The structured multi-phase composite is useful for use in structures such as, but not limited to, high speed engine ducts, exhaust-impinged structures, heat exchangers, electrical boxes, heat sinks, and heat spreaders. 1. An engineered multi-phase composite which includes a high thermal conductivity phase and a metal phase , and wherein said high conductivity phase is segregated into isolated pockets forming a discontinuous phase having equivalent spherical dimensions from 10-400 microns in size and from 20-60 vol. % in said engineered multi-phase composite , said metal phase is a continuous phase in said engineered multi-phase composite , said engineered multi-phase composite has a thermal conductivity that is at least 40% greater than the thermal conductivity of said metal that forms said metal phase.2. The engineered multi-phase composite as defined in claim 1 , wherein said high thermal conductivity phase constitutes 20-50 vol. % of said engineered multi-phase composite claim 1 , said high thermal conductivity phase is optionally formed of ceramic particles that have a lower modulus than said metal forming said metal phase claim 1 , said high thermal conductivity phase is optionally equiaxed or elliptical claim 1 , said high thermal conductivity phase optionally has a thermal conductivity at least two times said metal forming said metal phase claim 1 , said high thermal conductivity phase optionally has a coefficient of thermal expansion (CTE) at least 10% less than the CTE of the metal forming said metal phase.3. The engineered multi-phase composite as defined in claim 1 , wherein said high thermal ...

Method and Machine for Manufacturing a Fibre Electrode

A method for forming a connection such as an electrical connection, to a fibre material electrode element comprises moving a length of the fibre material relative to a pressure injection stage and pressure impregnating by a series of pressure injection pulses a lug material into a lug zone part of the fibre material to surround and/or penetrate fibres of the fibre material and form a lug strip in the lug zone. The fibre material may be a carbon fibre material and the lug material a metal such as Pb or a Pb alloy. Apparatus for forming an electrical connection to a fibre material electrode element is also disclosed.

High Conductivity Magnesium Alloy

A castable, moldable, or extrudable magnesium-based alloy that includes one or more insoluble additives. The insoluble additives can be used to enhance the mechanical properties of the structure, such as ductility and/or tensile strength. The final structure can be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final structure as compared to the non-enhanced structure. The magnesium-based composite has improved thermal and mechanical properties by the modification of grain boundary properties through the addition of insoluble nanoparticles to the magnesium alloys. The magnesium-based composite can have a thermal conductivity that is greater than 180 W/m-K, and/or ductility exceeding 15-20% elongation to failure. 123-. (canceled)24. A method for at least partially dissolving or degrading a down hole well structure in a well comprising the steps of:providing a down hole well structure, said down hole well structure at least partially dissolvable or degradable, said down hole well structure at least partially formed of a degradable or dissolvable magnesium-based composite, said degradable or dissolvable magnesium-based composite including a base metal and a plurality of insoluble nanoparticles, said base metal formed of a magnesium or magnesium alloy, said base metal including at least 70 wt. % magnesium, said insoluble nanoparticles having a melting point that is greater than a melting point of said base metal, said insoluble nanoparticles having a solubility of less than about 5% in said base metal, said insoluble nanoparticles constituting at least 0.1 vol. % of said magnesium-based composite, at least 50% of said insoluble nanoparticles located within 200 nm of grain boundaries or dislocations in said magnesium-based composite, said insoluble nanoparticles having an average thermal conductivity of above about 140 W/m-K, said magnesium-based composite having at least one ...

COMPOSITE AND MULTILA YERED SILVER FILMS FOR JOINING ELECTRICAL AND MECHANICAL COMPONENTS

A silver film for die attachment in the field of microelectronics, wherein the silver film is a multilayer structure comprising a reinforcing silver foil layer between two layers of sinterable particles. Each layer of sinterable particles comprises a mixture of sinterable silver particles and reinforcing particles. The reinforcing particles comprise glass and/or carbon and/or graphite particles. A method for die attachment using a silver film. 1. A silver film , wherein the silver film is a multilayer structure comprising a reinforcing silver foil layer between two layers of sinterable particles wherein each layer of sinterable particles comprises a mixture of sinterable silver particles and reinforcing particles , the reinforcing particles comprising glass and/or carbon and/or graphite particles , wherein the silver film is configured for die attachment by application of heat and pressure to sinter the silver film.2. The silver film of claim 1 , wherein the reinforcing particles comprise said glass particles.3. The silver film of claim 1 , wherein the reinforcing particles consist of said glass particles.4. The silver film of claim 1 , wherein the reinforcing particles comprise said carbon particles.5. The silver film of claim 1 , wherein the reinforcing particles consist of said carbon particles.6. The silver film of wherein the reinforcing particles comprise said graphite particles.7. The silver film of claim 1 , wherein the reinforcing particles consist of said graphite particles.8. The silver film of claim 1 , wherein the reinforcing silver foil layer is configured to support the sinterable silver particles layer and the reinforcing particles.9. The silver film of claim 1 , wherein the reinforcing particles are selected from the group consisting of spheres claim 1 , flakes claim 1 , fibers claim 1 , flowers claim 1 , nanowire claim 1 , and combinations thereof.10. The silver film of claim 1 , wherein the reinforcing particles have a particle size between 2 nm ...

Additive manufacturing methods and systems with fiber reinforcement

Additive manufacturing methods for fabricating a fiber-reinforced composite objects include providing at least a first layer of powder material, disposing a fiber material adjacent the at least first layer of powder material to form a fiber reinforcement layer, and applying a laser energy to the at least first layer of powder material so as to fuse the powder material into at least a first laser fused material layer adjacent the fiber reinforcement layer of the fiber-reinforced composite object.

HYDRIDE-COATED MICROPARTICLES AND METHODS FOR MAKING THE SAME

A metal microparticle coated with metal hydride nanoparticles is disclosed. Some variations provide a material comprising a plurality of microparticles (1 micron to 1 millimeter) containing a metal or metal alloy and coated with a plurality of nanoparticles (less than 1 micron) containing a metal hydride or metal alloy hydride. The invention eliminates non-uniform distribution of sintering aids by attaching them directly to the surface of the microparticles. No method is previously known to exist which can assemble nanoparticle metal hydrides onto the surface of a metal microparticle. Some variations provide a solid article comprising a material with a metal or metal alloy microparticles coated with metal hydride or metal alloy hydride nanoparticles, wherein the nanoparticles form continuous or periodic inclusions at or near grain boundaries within the microparticles. 1. A material comprising a plurality of non-metallic microparticles that are at least partially coated with a plurality of nanoparticles containing a metal hydride or metal alloy hydride , wherein said microparticles are characterized by an average microparticle size from between 1 micron to about 1 millimeter , wherein said nanoparticles are characterized by an average nanoparticle size less than 1 micron , and wherein said nanoparticles are attached to said microparticles without organic ligands.2. The material of claim 1 , wherein said material is in powder form.3. The material of claim 1 , wherein said average microparticle size is between about 10 microns to about 500 microns.4. The material of claim 1 , wherein said average nanoparticle size is between about 10 nanometers to about 500 nanometers.5. The material of claim 1 , wherein said plurality of nanoparticles forms a single-layer or multiple-layer nanoparticle coating that is between about 5 nanometers to about 100 microns thick.6. The material of claim 1 , wherein said non-metallic microparticles contain one or more materials selected from ...

Method for producing boron nitride nanotube-reinforced aluminum composite casting, boron nitride nanotube-reinforced aluminum composite casting, and master batch for producing boron nitride nanotube-reinforced aluminum composite casting

Provided is a method for producing a boron nitride nanotube-reinforced aluminum composite casting, the method being capable of reducing cost. The method for producing a boron nitride nanotube-reinforced aluminum composite casting comprises the steps of: (a) mixing boron nitride nanotubes and a first aluminum matrix and then pelletizing the resulting mixture; (b) heating and subjecting pellets obtained in step (a) to melt mixing to obtain a melt; (c) cooling and solidifying the melt obtained in step (b) to obtain a master batch; and (d) subjecting the master batch obtained in step (c) and the second aluminum matrix to melt mixing, and then cooling and solidifying the resulting mixture.

Degradable Metal Matrix Composite

The present invention relates to the composition and production of an engineered degradable metal matrix composite that is useful in constructing temporary systems requiring wear resistance, high hardness, and/or high resistance to deformation in water-bearing applications such as, but not limited to, oil and gas completion operations. 1. A degradable composite including:a. plurality of ceramic or intermetallic particles having a hardness greater than 50 HRC;b. galvanically-active elements that include one or more elements selected from the group consisting of iron, nickel, copper, cobalt, titanium silver, gold, gallium, bismuth, palladium, carbon, or indium; andc. degradable metal matrix that includes magnesium, aluminum, magnesium alloy or aluminum alloy, said degradable alloy matrix constituting greater than 50 wt. % magnesium or greater than 50 wt. % aluminum;wherein said degradable composite material includes a plurality of degradation catalyst particles, zones, or regions that are galvanically-active; andwherein said ceramic or intermetallic particles were precoated with said galvanically-active elements prior to being combined with said degradable metal matrix; andwherein a content of said plurality of ceramic or intermetallic particles in said degradable composite is 20 vol. % to 90 vol. % of said degradable composite; andwherein said degradable composite has a hardness of greater than 22 Rockwell C; andwherein said degradable composite has a degradation rate of 0.02-5 mm/hr. at 35-200° C. in 100-100,000 ppm freshwater or brine.26. The degradable composite as defined in claim 1 , wherein the ceramic or intermetallic particles include one or more materials selected from the group consisting of metal carbides claim 1 , borides claim 1 , oxides claim 1 , silicides claim 1 , or nitrides such as BC claim 1 , TiB claim 1 , TiC claim 1 , AlO claim 1 , MgO claim 1 , SiC claim 1 , SiN claim 1 , ZrO claim 1 , SiB claim 1 , SiAlON claim 1 , and WC.3. The degradable ...

Metal Matrix Composite Comprising Nanotubes And Method Of Producing Same

A metal matrix composite comprising nanotubes; a method of producing the same; and a composition, for example a metal alloy, used in such composites and methods, are disclosed. A method for continuously infiltrating nanotube yarns, tapes or other nanotube preforms with metal alloys using a continuous process or a multistep process, which results in a metal matrix composite wire, cable, tape, sheet, tube, or other continuous shape, and the microstructure of these infiltrated yarns or fibers, are disclosed. The nanotube yarns comprise a multiplicity of spun nanotubes of carbon (CNT), boron nitride (BNNT), boron (BNT), or other types of nanotubes. The element that infiltrates the nanotube yarns or fibers can, for example, be alloyed with a concentration of one or more elements chosen such that the resulting alloy, in its molten state, will exhibit improved wetting of the nanotube material. 1. A metal matrix composite , the composite comprising:a metal; anda plurality of nanotube reinforcements present in a volume fraction of between about 10% by volume and about 90% by volume of the metal matrix composite;the metal matrix composite comprising a continuous structure comprising the metal and the plurality of nanotube reinforcements.2. The metal matrix composite of claim 1 , wherein the plurality of nanotube reinforcements comprise at least one of carbon nanotubes claim 1 , boron nitride nanotubes claim 1 , boron nanotubes claim 1 , boron carbo-nitride nanotubes claim 1 , silicon nanotubes claim 1 , titanium oxide nanotubes and gallium nitride nanotubes.3. The metal matrix composite of or claim 1 , wherein the metal comprises at least one of copper claim 1 , aluminum claim 1 , silver claim 1 , gold claim 1 , tin claim 1 , cobalt claim 1 , nickel and iron.4. The metal matrix composite of any preceding claim claim 1 , wherein the plurality of nanotube reinforcements is present in a volume fraction of between about 40% by volume and about 60% by volume of the metal matrix ...

Degradable Metal Matrix Composite

The present invention relates to the composition and production of an engineered degradable metal matrix composite that is useful in constructing temporary systems requiring wear resistance, high hardness, and/or high resistance to deformation in water-bearing applications such as, but not limited to, oil and gas completion operations. 133.-. (canceled)34. A method for forming a degradable composite , said method comprises:a. providing ceramic particles, a plurality of said ceramic particles having a hardness of greater than 50 HRC;b. providing one or more galvanically-active elements selected from the group consisting of iron, carbon, nickel, copper, cobalt, gallium, indium, and titanium;c. combining ceramic particles and said one or more galvanically-active elements with a degradable metal material, said degradable metal material selected from magnesium, magnesium alloy including greater than 50 wt. % magnesium, and an aluminum alloy;d. dispersing said plurality of ceramic particles and said one or more galvanically-active elements in said degradable metal material while said degradable metal material is in a molten state to form a mixture; and,{'sup': '2', 'e. cooling said mixture to form said degradable composite, said degradable composite having a degradation rate of at least 5 mg/cm/hr. in freshwater or brine at a temperature of at least 90° C.'}35. The method as defined in claim 34 , wherein said degradable composite has a hardness of greater than 22 Rockwell C.36. The method as defined in claim 34 , wherein said degradable composite includes at least 10 vol. % degradable metal material claim 34 , at least 0.03 vol. % galvanically-active elements claim 34 , and at least 10 vol. % ceramic particles.37. The method as defined in claim 34 , wherein said degradable composite includes one or more metals selected from the group constating of calcium claim 34 , barium claim 34 , lithium claim 34 , sodium claim 34 , potassium claim 34 , silver claim 34 , gold claim 34 ...

Piece mecanique comportant un insert en materiau composite

L'invention concerne un procédé de fabrication d'une pièce mécanique (10, 110) comportant au moins un insert (3) en matériau composite à matrice métallique au sein de laquelle s'étendent des fibres céramiques, l'insert (3) en matériau composite étant obtenu à partir d'une pluralité de fils enduits (32) comportant chacun une fibre céramique enrobée d'une gaine métallique, le procédé comprenant la fabrication d'une ébauche (33) d'insert (3) avec une étape de bobinage d'un faisceau ou d'une nappe liée de fils enduits (32) autour d'une pièce de révolution (2, 202). Selon l'invention, au moins une partie du bobinage s'effectue selon au moins une direction rectiligne. En outre, le procédé comprend : une étape d'insertion de l'ébauche (33) d'insert (3) dans un premier conteneur (4); une étape de compaction isostatique à chaud du premier conteneur (4); et une étape d'usinage du premier conteneur (4) pour former un insert (3) rectiligne. L'invention concerne également une pièce mécanique (10) ainsi obtenue et un dispositif de bobinage (20) conçu pour la mise en œuvre du procédé de fabrication selon l'invention.

Aluminum alloy powder metal compact

A powder metal compact is disclosed. The powder metal compact includes a cellular nanomatrix comprising a nanomatrix material. The powder metal compact also includes a plurality of dispersed particles comprising a particle core material that comprises an Al—Cu—Mg, Al—Mn, Al—Si, Al—Mg, Al—Mg—Si, Al—Zn, Al—Zn—Cu, Al—Zn—Mg, Al—Zn—Cr, Al—Zn—Zr, or Al—Sn—Li alloy, or a combination thereof, dispersed in the cellular nanomatrix.

Galvanically-active in situ formed particles for controlled rate dissolving tools

A tastable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contains an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material.

Composite material and manufacturing method thereof, composite metal material and manufacturing method thereof

Composite metal material and method of producing the same

Mechanical part comprising insert from composite material

FIELD: process engineering. SUBSTANCE: group of inventions relates to composite mechanical part production and its application. Mechanical part (10, 110) comprises, at least, one insert (3) from composite material with metal matrix incorporating ceramic fibers made from composite material base on multiple coated threads (32), each including ceramic fiber with metal coating. Proposed method comprises making insert blank (33) in coiling bundle or bonded layer of such threads (32) to coat cylindrical part (2, 202). Note here that, at least, partially, coiling is performed in, at least, one straight direction. In includes also accommodating insert blank (33) in first container, first isostatic compaction of said container (4), machining of said container to form straight insert (3). EFFECT: insert transmitting unidirectional expansion/contraction force. 12 cl, 15 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 471 603 (13) C2 (51) МПК B23P B23P B21F C22C C22C 15/04 15/16 17/00 47/06 121/02 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010107051/02, 10.07.2008 (24) Дата начала отсчета срока действия патента: 10.07.2008 (73) Патентообладатель(и): СНЕКМА (FR), МЕССЬЕ ДАУТИ (FR) (43) Дата публикации заявки: 10.09.2011 Бюл. № 25 2 4 7 1 6 0 3 (45) Опубликовано: 10.01.2013 Бюл. № 1 (56) Список документов, цитированных в отчете о поиске: ЕР 1726678 A1, 29.11.2006. DE 10005250 A1, 10.08.2000. SU 643088 A3, 15.01.1979. US 3669364 A, 13.06.1972. FR 2886290 A1, 01.12.2006. 2 4 7 1 6 0 3 R U (86) Заявка PCT: FR 2008/001015 (10.07.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 26.02.2010 (87) Публикация заявки РСТ: WO 2009/034264 (19.03.2009) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. А.В.Мицу, рег.№ 364 (54) МЕХАНИЧЕСКАЯ ДЕТАЛЬ, СОДЕРЖАЩАЯ ВСТАВКУ ИЗ КОМПОЗИТНОГО МАТЕРИАЛА ( ...

Method of covalent bond formation between aluminum and carbon materials, method of preparing aluminum and carbon materials composite and aluminum and carbon materials composite prepared by the same

A method of covalent bond formation between aluminum and carbon materials, a method of manufacturing aluminum and carbon material composite and an aluminum and carbon material composite manufactured by the same are provided to use in automotive components and an aluminum wheel by having light weight and excellent mechanical strength. A method of covalent bond formation between aluminum and carbon materials comprises: a step for using gas mixed with one or more kinds selected from a group consisting of oxygen, argon and helium and inducing deformity and functionality by processing carbon materials with plasma; a step for mixing functional carbon material and aluminum; and a step for applying impulse current on the aluminum and carbon material mixture and inducing arc discharge and inducing Al-C covalent bond. The diameter of the carbon material is 0.4nm ~ 16micron ad the length is 10nm ~ 10cm.

一种复合材料拉丝模具及其制备方法

本发明公开了一种复合材料拉丝模具，包括模具本体，模具本体由顶部压缩区和底部定径区连接组成，模具本体中心设置有膜孔，压缩区中心的膜孔为锥形孔，定径区中心的膜孔为圆形孔，模具本体按照质量百分比由以下组分组成，WC颗粒72％‑80％、羰基Fe粉3％‑5％、Nb纤维13％‑17％、Nb粉3.5％‑6％和石墨粉0.45％‑0.65％，以上各组分的质量百分比之和为100％；模具本体中的Nb纤维呈网状排布，为中空的网状结构，本发明还公开了一种复合材料拉丝模具的制备方法，采用该方法制备的复合材料拉丝模具具有较高的强度和良好的韧性。

用于船艇的铝基复合材料及其制备方法

本发明涉及一种用于船艇的铝基复合材料及其制备方法，属于复合材料技术领域。该用于船艇的铝基复合材料包括按照质量份数计的如下原料：铝60-75份、锰0.5-4份、镁1-2份、锂0.5-2份、铍0.8-2.5份、铜3-8份、钛1-2份、碳纤维1-3份、碳化硅纤维2-5份、氧化铝5-10份。本发明的复合材料强度高，具有良好的抗海水侵蚀性能和避磁性；本发明的制备方法简便，适于工业生产。

一种抗拉强度高的铁基粉末冶金自润滑cng发动机气门座圈及其制作方法

本发明公开了一种抗拉强度高的铁基粉末冶金自润滑CNG发动机气门座圈，由下列重量份的原料制成：铬6.3‑6.5、钴4.3‑4.5、镍0.6‑0.9、锆1.6‑1.9、钒2.8‑3.2、铜15‑18、纳米二硫化钼0.9‑1.2、二硫化钨0.5‑0.7、碳纳米管0.3‑0.6、硅灰1‑2、焦亚硫酸钠0.1‑0.3、钢纤维1.6‑1.8、聚酰亚胺树脂粉3‑4、微蜡粉2‑3、铁66‑69，本发明将改性后的纳米二硫化钼表面覆盖一层铜膜作为固体润滑剂添加到基体材料中，同时还添加二硫化钨、锆、钒等成分，采用烧结、熔渗、热处理工艺改变金属粒子相变，制得的产品具有高的抗拉强度和抗疲劳强度，耐氧化、成本低廉。

電気部品および機械部品を接合するための複合物および複層銀膜

高强高延性CNTs‑SiCp增强铝基复合材料及其制备方法

本发明公开了一种高强高延性CNTs‑SiC p 增强铝基复合材料，包括以下组分：碳纳米管≤5vol.％，碳化硅颗粒≤5vol.％，余量为铝粉。其制备方法为：将各原料组分及磨球按照比例加入球磨罐，并加入过程控制剂，在惰性气体保护下球磨分散，得到分散均匀的混合粉末；将混合粉末装填在石墨模具中，然后先对混合粉末预压，再将预压后的块体进行烧结，最后将烧结成型的复合材料置于惰性气体保护下的管式炉中预热，并进行热挤压，得到本发明的CNTs‑SiC p 增强铝基复合材料。本发明CNTs‑SiC p 增强铝基复合材料具有良好的力学性能，同时仍然保持着高延伸率和高导电性。

METHOD FOR PRODUCING A TOOL PART

一种纽扣电池引脚及其焊接的方法

本发明公开了一种纽扣电池引脚及其焊接的方法，具体涉及纽扣电池领域，该引脚包括导线，所述导线具体为单根线芯导线，所述导线由熔点与电池钢壳熔点接近的单金属或合金材料制成，所述导线通过焊针与电池钢壳焊接连接；引线加工后开始焊接：采用沥青基铝浆、矿物醇和水滑石制备封孔涂层，将封孔涂层涂覆在电池钢壳的焊接部位，采用电焊机，将导线与电池钢壳焊接，并且在焊接完成后，待温度降低到一定程度后，再次在焊接部位涂覆封孔涂层。本发明通过将引线设置为单根线芯导线，且采用的原料为熔点与电池钢壳熔点一至的金属或是合金材料，可将其直接焊接到电池钢壳上，焊接工艺简单，焊接强度高，引线不易断裂脱落，且体积小，节省空间。

一种含铬熔渗粉及其在铜铬硅改性炭/陶摩擦材料中的应用

本发明公开了一种含铬熔渗粉及其在铜铬硅改性炭/陶摩擦材料中的应用；属于新材料技术领域。本发明设计的含铬熔渗粉包含Cu、Cr、Si；其中Cu、Cr、Si的质量比为Cu∶Cr：Si＝(35～50)∶(25～55)：(40～60)。其应用为：首先对炭纤维预制体进行高温热处理后采用快速化学气相渗透法和(或)树脂浸渍/炭化进行致密化，制得低密度的炭/炭多孔体材料，然后采用非浸泡式熔融浸渗技术对炭/炭多孔体材料同时进行Si、Cr、Cu共渗，通过Si与C、Si与Cr及Si与Cu的反应复合成一体制得铜铬硅改性炭/陶摩擦材料。本发明制备工艺简单，所得产品性能优良，便于大规模的工业化应用。

一种风电制动闸片及其增材制造方法

本发明涉及一种风电制动闸片及其增材制造方法，所述风电制动闸片由如下原料制备得到：基体组元、摩擦组元、润滑组元、降噪组元和粘结剂；其中，所述基体组元包括平均粒径≤7μm的超细铜粉、平均粒径≤10μm的锡粉和铁粉，所述润滑组元包括硫化物和鳞片石墨，所述降噪组元包括石油焦炭，所述摩擦组元包括氧化锆、钛酸盐和莫来石。采用本发明所述原料制备得到的所述风电制动闸片在使用过程中不会对摩擦副表面造成裂纹、拉伤、划伤和不均匀磨耗等现象。

Self-repairing, reinforced matrix materials

Self-repairing, fiber reinforced matrix materials include a matrix material including inorganic as well as organic matrices. Disposed within the matrix are hollow fibers having a selectively releasable modifying agent contained therein. The hollow fibers may be inorganic or organic and of any desired length, wall thickness or cross-sectional configuration. The modifying agent is selected from materials capable of beneficially modifying the matrix fiber composite after curing. The modifying agents are selectively released into the surrounding matrix in use in response to a predetermined stimulus be it internal or externally applied. The hollow fibers may be closed off or even coated to provide a way to keep the modifying agent in the fibers until the appropriate time for selective release occurs. Self-repair, smart fiber matrix composite materials capable of repairing microcracks, releasing corrosion inhibitors or permeability modifiers are described as preferred embodiments in concrete and polymer based shaped articles.

Process for forming metal-second phase composites and product thereof

내용 없음. No content.

Cnt-infused glass fiber materials and process therefor

A composition includes a carbon nanotube (CNT)-infused glass fiber material, which includes a glass fiber material of spoolable dimensions and carbon nanotubes (CNTs) bonded to it. The CNTs are uniform in length and distribution. A continuous CNT infusion process includes: (a) disposing a carbon-nanotube forming catalyst on a surface of a glass fiber material of spoolable dimensions; and (b) synthesizing carbon nanotubes on the glass fiber material, thereby forming a carbon nanotube-infused glass fiber material. The continuous CNT infusion process optionally includes extruding a glass fiber material from a glass melt or removing sizing material from a pre-fabricated glass fiber material.