1704 results about "Metal fibers" patented technology

A golf ball including an improved mantle composition which results in improved performance characteristics. The composition includes a soft, flexible resin, such as an elastomer, and a quantity of at least one hardness-enhancing material, such as a quantity of fibers or fiber segments, such as glass, carbon, aramid, and/or metallic fibers, and, optionally, at least one ionomer. The hardness-enhancing material can constitute about 1 to about 30 wt % of the intermediate layer. The composition of the intermediate layer enables the golf ball to maintain initial speed and distance of known golf balls, while improving upon spin rate and playability. Alternatively, spin rate and playability can be maintained, while improving upon the initial speed and distance.

The present invention relates to light weight composite materials which comprise a metallic layer and a polymeric layer, the polymeric layer containing a filled thermoplastic polymer which includes a thermoplastic polymer and a metallic fiber. The composite materials of the present invention may be formed using conventional stamping equipment at ambient temperatures. Composite materials of the present invention may also be capable of being welded to other metal materials using a resistance welding process such as resistance spot welding.

A composition includes a carbon nanotube (CNT)-infused metal fiber material which includes a metal fiber material of spoolable dimensions, a barrier coating conformally disposed about the metal fiber material, and carbon nanotubes (CNTs) infused to the metal fiber material. A continuous CNT infusion process includes: (a) disposing a barrier coating and a carbon nanotube (CNT)-forming catalyst on a surface of a metal fiber material of spoolable dimensions; and (b) synthesizing carbon nanotubes on the metal fiber material, thereby forming a carbon nanotube-infused metal fiber material.

A method of producing metal fibers including melting a mixture of at least a fiber metal and a matrix metal, cooling the mixture to form a bulk matrix comprising at least a fiber phase and a matrix phase and removing at least a substantial portion of the matrix phase from the fiber phase. Additionally, the method may include deforming the bulk matrix. In certain embodiments, the fiber metal may be at least one of niobium, a niobium alloy, tantalum and a tantalum alloy and the matrix metal may be at least one of copper and a copper alloy. The substantial portion of the matrix phase may be removed, in certain embodiments, by dissolving of the matrix phase in a suitable mineral acid, such as, but not limited to, nitric acid, sulfuric acid, hydrochloric acid and phosphoric acid.

The present invention provides a composite yarn and an implantable prosthesis having at least portion made from a metallic material, component, or yarn. The composite yarn including a combination of a metallic component and a non-metallic component. The prosthesis includes a biocompatible fabric having a textile construction. A further aspect of the invention provides a method of making a implantable prosthesis constructed from a composite yarn of the present invention.

PCT No. PCT/FR96/00122 Sec. 371 Date Jul. 24, 1997 Sec. 102(e) Date Jul. 24, 1997 PCT Filed Jan. 24, 1996 PCT Pub. No. WO96/22953 PCT Pub. Date Aug. 1, 1996An ultra-high performance composite concrete, with low cement and fiber content and having good mechanical properties as well as good impacts, shocks and projectile protection properties, includes hydraulic binder, aggregates, an admixture of metal fibers. Particularly, the composite concrete includes 70% to 85% of particles (A) having a particle size distribution which ranges from 0.01 to 3 mm up to particle size distribution which ranges from 0.01 to 0.50 mm; 2% to 10% of particles (B) having particle size of between 0.01 and 1 mu m; 3% to 20% of hydraulic binder; 0.1 to 3% of a dispersant or plasticizer; 0.05% to 8.5% of fibers; and, mixing water, wherein the percentages being weight percentages based on the sum of the weights of constituents a) to d).

A flame retardant thermoplastic composition having excellent physical properties that includes 20 to 90 wt. % of a polycarbonate resin; from 1 to 35 wt. % of an impact modifier; from 0.5 to 30 wt. % of a polysiloxane-polycarbonate copolymer including from 8 to 30 wt. % polydimethylsiloxane units or the equivalent molar amount of other diorganosiloxane units; from 0.5 to 20 wt. % of a phosphorus-containing flame retardant, and from 3 to 30 wt. % of metal fiber, each based on the total combined weight of the thermoplastic composition, exclusive of any filler. In one embodiment, a molded sample of the thermoplastic composition having a thickness of 3.0 mm (±10%) has an EMI shielding of at least 20 dB. In addition, a molded sample of the thermoplastic composition is capable of achieving UL94 V0 or V1 rating at a thickness of 1.5 mm (±10%). The compositions are useful in forming flame retardant articles having EMI shielding characteristics.

An improved acoustical damping wall (ceiling or floor) or door material comprises a laminar structure having as an integral part thereof one or more layers of viscoelastic material which also functions as a glue and one or more constraining layers, such as metal, cellulose, wood, or petroleum-based products such as plastic, vinyl, plastic or rubber. In one embodiment, standard wallboard, typically gypsum, comprises the external surfaces of the laminar structure; and one or more constraining layers are fabricated between the gypsum exterior. The resulting structure improves the attenuation of sound transmitted through the structure.

The present invention provides a carbon nano-tube reinforcing cement-based composite material and the preparing method thereof, which relates to an inorganic non-metal fiber-reinforced cement-based composite material and the preparing method thereof. The invention settles the problem that the carbon nano-tube is hard to uniformly dispersed in the cement substrate, and the carbon nano-tube reinforcing cement-based composite material of the invention is mainly composed of carbon nano-tube, dispersing agent, thickening stabilizing agent, cement blending material, superplasticiser, antifoaming agent and cement; the method of the invention comprises the following steps: slowly injecting the continuous phase mixed liquid of the thickening stabilizing agent into the carbon nano-tube disperse phase mixed liquid; adding the cement mixing material, mixing to uniform, heating and ultrasonic agitating, then vacuum discharging the bubble; then adding into the mixed liquid of the superplasticiser and the water for mixing to uniform, further eliminating the bubble with the antifoam agent; at last adding cement for mixing to uniform, adding the slurry into the oil mould and jolt ramming for molding; mode removing and standard maintaining to the prescribed lifetime. The carbon nano-tube in the product prepared by the method of the invention is uniformly dispersed in the cement substrate. The mechanical property and conductivity of the product is increased for several times.

The invention provides a metal porous material with a gradient pore structure, which is formed by at least two porous layers with different pore diameter. The pore diameter of the metal porous material gradually decreases or gradually increases with the thickness direction of the material; a bottom layer of the porous layers is a macropore layer used as a support body; a surface layer of the porous layers is a pore layer used as a filtering precision control layer; the material of the macropore layer is a composite wire gauze, a metal fiber felt or a powder sintered metal porous material; and the material of the pore layer is superfine metal powder or superfine metal fiber. A method for preparing the metal porous material comprises a step of using spraying, dipping or centrifugal coating method to manufacture at least one pore layer on the surface of the support body. Compared with the prior metal porous material in the same grade, the metal porous material with the gradient pore structure has the advantages of obviously raising permeability coefficient, well solving the contradiction between the pore diameter and relative permeability coefficient of the metal porous material and having a simple process.

The invention relates to a LiFePO4 material for Li-ion battery and the making method thereof. The method controls diameter and length of C or metallic fiber at 100-300 nm and 10-20 mum, respectively and dopes ions with valences greater than +2-+4 in Li situ of LiFePO4, in the raw material composed of Li source, ion-doped compound, trivalent Fe source, phosphate radical, charcoal material, and C/metallic fiber, so as to make the LiFePO4 material, largely reducing the charcoal material content of the made LiFePO4 material on the premise of not reducing electron conductivity; and because the specific surface area of the charcoal material is selected at 30-80 sq m/g, effectively raising the tap density of material so as to bring a great convenience to the follow-up electrode smearing process. And the prepared LiFePO4 material has low cost and simple operating process, easy to large-scale production.

The invention is a method of binding compound materials of the C/SiC and C/C, which belongs to the technology field of binding heterogeneous materials. The processing procedures are as following: 1. The surface of the e compound materials of the C/SiC and C/Cis pretreated, which comprise the surface of the connecting are grinding, cleaning, vacuum biscuit firing, preparation of double-layer metal film and microvacum heat treatment and so on. 2. The transition layer of the connecting area surface gradient of the compound materials of the C/SiC is coated and sintered. 3. The compound materials with the gradient transition layer as the felted phase is brazed with the metal in vacuum. The invention is characterized in that the gradient transition layer is directly used as the materials that bind the compound materials with the metal; the gradient transition layer is double-layered or multilayered (sub-layered) structure; from the inner basal body to the outer part of the compound materials, the melting points of active brazing alloy adopted by each sub-layer gradually lower, the coefficient of heat expansion that adjust volume percentage composition gradually lower and the coefficient of heat expansion of the sub-layers gradually rise. The brazing ceramic metal connecting piece of the invention has good strength, air tightness and wide application field, which is suitable for various non-metallic fibers, such as ceramics of SiC, Si3N4, Al2O3, AlN and so on and applicable for connecting the ceramic matrix compound materials with particulate reinforced with the metal.

A fluid filter assembly and method of making is disclosed for filtering a fluid. The fluid filter assembly comprises a first filter component including a filter media comprising a matrix of metallic fibers. A second filter component includes a filter support. A sinter bond bonds the matrix of metallic fibers of the filter media to the second filter component.

A composition includes at least one poly(aliphatic ester)-polycarbonate copolymer, a polysiloxane-polycarbonate copolymer, and an electromagnetic shielding agent (such as metal fibers). The composition exhibits excellent impact properties and electromagnetic shielding properties when formed into an article. Another composition includes at least one poly(aliphatic ester)-polycarbonate copolymer, a polysiloxane-polycarbonate copolymer, and carbon fibers. This composition has excellent impact properties when formed into an article.

Vehicle body, chassis, and braking components are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a base resin host. The percentage by weight of the conductive powder(s), conductive fiber(s), or a combination thereof is between about 20% and 50% of the weight of the conductive loaded resin-based material. The micron conductive powders are metals or conductive non-metals or metal plated non-metals. The micron conductive fibers may be metal fiber or metal plated fiber. Further, the metal plated fiber may be formed by plating metal onto a metal fiber or by plating metal onto a non-metal fiber. Any platable fiber may be used as the core for a non-metal fiber. Superconductor metals may also be used as micron conductive fibers and/or as metal plating onto fibers in the present invention.

The invention relates to implantable medical devices, particularly, to porous structures for such devices. In one aspect, the invention provides a porous metal scaffold comprising a porous metal network having pores defined by metal webs, the metal webs covered with at least one layer of metal particles bonded to the metal webs. In other aspects, the invention provides methods of forming porous scaffolds. In one such aspect, the method includes providing a polymer foam; forming a skin of biocompatible metal on the polymer foam by low temperature arc vapor deposition; and heating the polymer foam and the metal skin above the decomposition temperature of the polymer foam in an inert gas atmosphere; thereby the polymer foam decomposes producing a green metal foam. In yet other aspects, the invention provides methods of improving stability of porous scaffolds.

The invention discloses a method and a device for testing micro-tensile mechanical properties of a metal fiber. Being different from the existing tensile tester, the invention is characterized in that a force transducer is composed of a non-contact photoelectric displacement transducer and an elastic element, the force transducer can be used for measuring both the tensile force of a fiber and the displacement of the gripped end of the fiber and helping automatically and accurately obtain the tensile force-deformation curve of a test sample in real time so as to obtain the stress-strain curve of the test sample, and parameter values characterizing the micro-tensile mechanical properties of the metal fiber can be obtained by analyzing the stress-strain curve. By using the optical non-contact measurement method, the invention avoids the interference generated by the traditional contact measurement, and enables the measuring system to be more stable. Besides, the whole device has the advantages of ingenious structure, simple and convenient operation and stable performance, thereby being applicable to testing the micro-tensile mechanical properties of various single fibers (especially metal fibers).

The invention relates to a containment filtering and discharging system. As a shielding plant (11) is arranged outside a containment, a discharging and filtering sub system is arranged in the shielding plant (11), a water washing filter (3) and a metal fiber filter (4) connected with each other in sequence are arranged in the discharging and filtering sub system and the water washing filter (3) is provided with a waste liquid returning pipeline (10), gases discharged by the containment are doubly filtered by the water washing filter (3) and the metal fiber filter (4), and the waste liquid accumulated in the water washing filter (3) self-flows into the containment through the waste liquid returning pipeline (10) under the effect of gravity force. Therefore, according to the invention, serious accidents occurred in pressurized-water reactor nuclear power stations are eased, overpressure failure of the containment is prevented, radioactive substances released to the environment are reduced, safeties of the surrounding environment and personnel are protected, and the safety of the nuclear power stations are greatly improved.

Disclosed is an electrically conductive thermoplastic polymer composition comprising a thermoplastic polymer and a synergistic combination of metal fibers and metal-coated fibers, structures made therefrom, and a process to make said compositions and structures.

An electrical brush having at least one conductive element and at least one conditioning material coated on the at least one conductive element wherein the conditioning material has a composition and thickness on the conductive element such that, as deposited on a moving contact surface in the course of brush operation, the conditioning material can have an average film thickness S<˜1 μm so that current can be conducted by means of electron tunneling through a film thickness of the deposited conditioning material of S_i≦12 nm thickness over a fractional area f_C, greater than 0.01 of a foot print of the conductive element in a current conductive area.

The process of bonding a first workpiece to a second workpiece is disclosed comprising the steps of fabricating a sintered bonding pad formed from a matrix of randomly oriented metallic fibers. The bonding pad is interposed between the first and the second workpiece and the first and second workpieces are biased into engagement with the bonding pad. Heat is applied to the first workpiece to the second workpiece for transforming substantially all of the metallic fibers into a liquid for bonding the first workpiece to the second workpiece.

The invention belongs to the technical field of materials, and particularly relates to a hybrid fiber reinforced friction material for train braking and a preparation method thereof. In the invention, a composite modified phenolic resin is used as an adhesive, and hybrid fibers, including carbon fiber, metal fiber, inorganic mineral fiber and the like, are used as the reinforcing fibers. Compared with the prior art, the invention improves the contour machining property of the organic synthetic brake, and the yield of the material is high; the brake has stable frictional property at different braking speeds, does not has obvious degradation of frictional property at high speed, and does not have the phenomena of shedding and cracking on the working surface after the braking test. The friction material provided by the invention can be widely used for manufacturing brake pads, brakes, brake shoes and the like in braking systems of passenger and freight trains, municipal rail transportation, subways and the like.