86 results about "Metal matrix composite" patented technology

This invention relates to the field of metal matrix composite material preparation technology, and discloses a method for preparing a bundled vanadium carbide reinforced steel matrix composite material, comprising: immersing vanadium wire in a pretreatment chemical isolation liquid and drying it to form a precursor solid film on the surface; fabricating a preform from the vanadium wire with the solid film on the surface using a three-dimensional orthogonal weaving process; placing the preform in a vacuum sintering furnace and heating it to complete solid-phase pre-alloying; fixing the preform in a mold and preheating it under a protective atmosphere; melting a high-carbon steel matrix material until it is completely liquefied, injecting it into the mold to immerse the preform, and cooling it to obtain a composite preform block; subjecting the composite preform block to in-situ reaction diffusion heat treatment to obtain the composite material. This invention prevents the thermal loss of vanadium wire during liquid casting and, through in-situ diffusion reaction, allows the generated vanadium carbide to inherit the initial weaving morphology, achieving a three-dimensional bundled uniform distribution of the reinforcing phase within the steel matrix.

This invention belongs to the field of laser surface engineering and metal matrix composite technology, and provides a Ti / Nb microalloyed Inconel 625 toughening coating, its composite powder, and preparation method. The composite powder is composed of gas-atomized Inconel 625 alloy powder, titanium powder, and niobium powder, with a Ti to Nb mass ratio of (0.8–1.2):1 and a total addition amount of 0.8–1.5 wt%. A dual-laser cladding process is employed. An initial coating is first formed by laser cladding in an inert atmosphere, followed by in-situ pulsed laser shock blasting when cooled to 900–1000℃. After slow cooling, a toughened coating is obtained. The resulting coating contains 10–20 nm dispersed Ni3(Nb,Ti) composite γ-rays. , The coating contains no Ni2(Nb,Si) Laves phase. It exhibits both high strength and high toughness, along with excellent high-temperature stability.

The application discloses a kind of preparation systems of carbon nanotube reinforced metal matrix composite, it is related to the preparation technical field of carbon nanometer metal material, system includes including carbon nanotube preparation unit, carbon nanotube preparation unit connects mixer, multiple feed pipes are connected on mixer, multiple hole distribution plates are connected in mixer, rotary feeder is connected at the discharge port of mixer bottom, rotary feeder connects venturi tube, venturi tube connects material dispersion unit, material dispersion unit connects material melting unit, material melting unit is connected with for the spray gun that molten mixed material is sprayed to conveying belt, conveying belt connects mechanical tablet press, mechanical tablet press connects heat treatment furnace.The system realizes the accurate control of reinforcing phase morphology and dispersity, solves the technical problems of material interface combination and densification;And through the design of heat pressing setting unit, the comprehensive performance and production efficiency of material are significantly improved.

This invention relates to a method for preparing a high-wear-resistant metal-based composite material. This method significantly improves the wear resistance of the material by combining nano-reinforcing particles, surface modification technology, and self-healing capabilities. Aluminum alloy or titanium alloy is selected as the matrix, and nano-sized silicon carbide or alumina particles are used as reinforcing materials. The reinforcing materials are uniformly dispersed using processes such as stir casting, forging, diffusion bonding, infiltration, or powder metallurgy. The composite material structure is then precisely formed using 3D printing technology. The surface of the composite material is treated with a nano-coating or plasma treatment to enhance its wear resistance and corrosion resistance. Furthermore, by embedding microcapsules containing a repair agent into the material, automatic repair of worn areas is achieved, improving the material's reliability and service life. This composite material is particularly suitable for mechanical engineering and automotive manufacturing, especially in the manufacture of automotive brakes under high-wear environments, demonstrating excellent performance and broad application prospects.

The application belongs to the technical field of metal matrix composite material preparation, and particularly relates to a preparation method and application of a powder for a titanium-based composite material. The powder prepared through a pre-homogenization-solidification-second powdering composite powder preparation route is highly uniform in composition, controllable in oxygen content, and good in interface bonding. The TMCs made of the powder are high in density, excellent and stable in mechanical properties. Through raw material combination and process innovation, the performance close to that of pre-alloyed spherical powder is realized at a lower cost, and the high-cost industrialization obstacle is broken. Further, the process flow of the application is stable, the yield of finished products is high, and the powder produced can be simultaneously applied to two mainstream processes of powder metallurgy and additive manufacturing, realizing "one powder for two uses", and greatly improving production flexibility and efficiency. The problems of poor uniformity and interface pollution of mechanically mixed powder, and high cost and difficult process of pre-alloyed powder are fundamentally solved.

This invention proposes a metal matrix composite material processing apparatus and method based on plasma etching, belonging to the field of composite material processing. It determines the material properties, target processing method, and final service performance requirements of the metal matrix composite workpiece. The workpiece consists of a metal matrix and reinforcing particles dispersed within the metal matrix. The area to be processed on the workpiece is exposed to a plasma jet, and plasma etching is used. The reinforcing particles react and transform into volatile gases, which are then removed from the metal matrix, forming a softening pretreatment layer on the workpiece surface. Ultrasonic vibration cutting is then used to remove the softening pretreatment layer. This invention removes the reinforcing particles from the metal matrix through plasma etching, locally transforming the originally heterogeneous and difficult-to-process composite material into a relatively homogeneous metal layer for cutting. This achieves homogeneous transformation of the processed object, eliminating the core mechanisms of particle pull-out, breakage, and interface cracking in traditional processing.

The present application relates to the technical field of metal matrix composites, and provides a high-throughput modeling and calculation method for metal matrix composites, comprising the following steps: S1: determining the parameters of particles and matrix in different particle reinforced metal matrix composites; S2: establishing brick masonry configuration, multi-core structure and Belytschko configuration based on the parameters of particles and matrix; S3: establishing gradient distribution configuration based on the parameters of particles and matrix, including surface layer hard structure and core layer hard structure and cobweb structure; S4: establishing honeycomb structure, micro-tube structure and uniform structure based on the parameters of particles and matrix; S5: batch setting of boundary conditions required for each model in uniaxial tension, creating and gradually submitting jobs, and automatically extracting parameters including stress-strain curve, stress nephogram and energy release rate at any moment of uniaxial tension. The present application solves the problem of reducing the cost required for exploring high-performance materials in high-throughput modeling and calculation of particle reinforced metal matrix composites.

The application relates to the technical field of metal composite material preparation, in particular to a metal matrix composite material based on modified boron nitride nanotube reinforcement and a preparation method, which comprises the following steps: S1, adding boron nitride nanotube powder into ethanol for dispersion, filtering and drying and grinding treatment to obtain uniformly dispersed boron nitride nanotube powder; S2, depositing Ti or W on the boron nitride nanotube powder by using a physical deposition method or a chemical deposition method to obtain modified boron nitride nanotubes; S3, wetly mixing the modified boron nitride nanotubes with pure metal powder, and then performing drying treatment, drying treatment and ball milling treatment to obtain uniformly dispersed mixed powder; and S4, treating the mixed powder by using a 3D printing technology or by compression, sintering or short-time melting to prepare the metal matrix composite material; the mechanical performance of the metal matrix composite material is improved by introducing the modified boron nitride nanotube powder and retaining the structure of the boron nitride nanotube in the three-dimensional printing process.

This invention belongs to the field of metal matrix composite material preparation technology, specifically relating to a zinc-based composite material, its preparation method, and its application, addressing the problems of insufficient mechanical properties and difficulty in uniformly dispersing nanoparticles in pure zinc materials. The zinc-based composite material comprises a zinc matrix and fine nano-ceramic particles. The nano-ceramic particles have a particle size of 50-99 nm and a volume fraction of 0.5-2 vol%, uniformly dispersed within the zinc matrix. The preparation method involves an in-situ exchange reaction to transfer coarse nano-ceramic particles from an aluminum carrier to the zinc matrix, dispersing and refining them to obtain a zinc-based composite material with fine nano-ceramic particles. This invention solves the technical problem in existing technologies where high-melting-point ceramic materials are prone to floating, agglomeration, or interfacial separation, resulting in difficulty in precisely controlling the particle size below 100 nm. It achieves a uniform distribution of the ceramic reinforcing phase below 100 nm, thereby improving the creep and mechanical properties of the zinc-based composite material.

This invention belongs to the field of metal matrix composite technology, specifically relating to a method for preparing a horizontally continuously cast copper-aluminum composite material. The preparation method includes the following steps: continuously forming a copper plate; controlling the temperature of the copper plate to be no lower than 900°C between the output copper plate and the aluminum melt inlet; using an inert gas, cold-spraying nano-aluminum nitride and micron-sized copper composite particles onto the copper plate strip; then cold-spraying nano-titanium and micron-sized aluminum composite particles to form a composite coating on the copper plate; the aluminum melt flows out onto the composite coating, and after cooling, the aluminum melt solidifies on the copper plate and forms a metallurgical bond with the copper plate; rolling is then performed to obtain the copper-aluminum composite material. The preparation method of this invention can suppress the formation of brittle phases at the copper-aluminum composite interface and improve the interface stability during processing.

Method for producing a shaped body from a silicon matrix composite material, wherein the shaped body is built up step by step from several layers and subsequently infiltrated with silicon, the molded body is built up using powder bed printing, also known as binder jetting, with a layer thickness of 50 to 250 µm, where SiC is used as the ceramic powder and a binder or binder-hardener system in liquid state, characterized in that the ceramic powder has a multimodal particle size distribution, the main fraction of which has a mean particle size measured by laser diffraction in the range of 40-55 µm and the percent difference (D90-D10) / D50 of the total particle size distribution is between 0.5 and 1.0 and wherein the ceramic powder comprises at least one further fraction whose mean particle sizes are 3-5 µm and / or 10-15 µm.

This invention relates to the field of metal matrix composite material preparation technology, specifically to a zinc-based alloy composite material and its preparation method, particularly applicable to the field of biodegradable biomedical implant materials. The zinc-based alloy composite material comprises a zinc alloy matrix and nano-reinforcing particles. The zinc alloy matrix is ​​composed of Zn, Cu, and Li; wherein the mass percentage of Cu in the zinc alloy matrix is ​​1-2 wt%, and the mass percentage of Li in the zinc alloy matrix is ​​0.1-0.9 wt%; the volume percentage of the nano-reinforcing particles in the zinc alloy matrix is ​​<2.5 vol%; the particle size of the nano-reinforcing particles is <100 nm, and the nano-reinforcing particles are uniformly dispersed in the zinc alloy matrix. The invention also relates to the preparation and application of the above-mentioned zinc-based alloy composite material. This invention solves the problems of unstable microstructure and difficulty in balancing strength and ductility in existing zinc-copper-lithium alloys, thus improving the mechanical properties of the zinc-copper-lithium alloy system.

Reinforced metal matrix composites are described including a porous ceramic reinforcement and a metal matrix in interstitial contact with the ceramic reinforcement. Methods of forming reinforced metal matrix composites are described including contacting a porous ceramic reinforcement with a liquid metal matrix and solidifying the liquid metal matrix.

A component of a semiconductor processing chamber formed of a metal matrix component having an anodized layer on a surface thereof. The anodized layer comprises an aluminum oxide layer and is formed over an AlSic component. The anodized layer provides the component with protection against corrosion due to plasma processing gases, as the anodized layer provides a protective coating. A layer of aluminum is plated over a surface of the component and the aluminum layer is subsequently anodized to form the protective layer.

This invention relates to the field of metal matrix composite technology, and discloses a high-strength, toughness, and wear-resistant iron-based ceramic composite material, its preparation method, and its application. The composite material includes an iron-based alloy matrix and a reinforcement distributed therein. The preparation method mainly includes: mixing aluminum borate whiskers with tantalum powder, sintering them by spark plasma to form a porous preform, and then densifying the preform with iron-based alloy foil through a hot-pressing melting process. This invention, through a core-shell structure reinforcement design, utilizes a tantalum-rich shell layer to coordinate the performance differences between the ceramic phase and the iron matrix, strengthens the interfacial bonding, and thus simultaneously improves the hardness, flexural strength, impact toughness, and wear resistance of the composite material. This material is suitable for manufacturing components that withstand high-stress impact wear in fields such as mining machinery and engineering equipment.

The present application belongs to the technical field of high-performance metal matrix composites, and particularly relates to a SiC fiber reinforced metal matrix composite sample with controllable fiber fracture defects and a preparation method and application thereof. The preparation method of the sample comprises the following steps: (1) taking a SiC fiber reinforced metal matrix composite precursor filament; (2) making the precursor filaments axially parallel to each other and adhering and fixing them with an adhesive to obtain a precursor filament bundle, and then loading the precursor filament bundle into an alloy sheath; (3) plugging the two ends of the alloy sheath with plugs; and (4) performing hot isostatic pressing. According to a preset defect proportion, a defect distribution plane and a defect distribution mode, the present application calculates the cutting quantity, cutting position and distribution mode of the composite precursor filament sample. The present application changes the common fiber fracture defect phenomenon in the composite from a passive problem that needs to be avoided in the traditional way into an independent research variable that can be actively designed and controlled, and establishes a new type of "preformed defect" experimental method.

The application relates to the technical field of carbon fiber recycling and reuse, and discloses a device and a method for preparing a regenerated carbon fiber reinforced metal matrix composite material, which comprises a flux-cored wire forming machine for preparing the composite material, the core of the composite material is a regenerated short fiber, and the outer part of the composite material is a metal matrix; a protective cover is internally provided with a heating furnace through a moving piece, the inner bottom end of the protective cover is provided with a receiving plate, and the heating furnace moves above the receiving plate through the moving piece; a conveying piece is arranged at the top end of the protective cover, the composite material is conveyed into the heating furnace through the conveying piece, the composite material is conveyed onto the receiving plate after being heated by the heating furnace, and the temperature of the composite material is adjusted by adjusting the temperature of the receiving plate, so that the core and the outer part of the composite material and the outer part and the outer part realize interlayer combination. The application improves the preparation difficulty of the mixture of the regenerated carbon fiber and the metal matrix, improves the reinforcing effect of the regenerated carbon fiber on the metal matrix, and improves the application value of the regenerated carbon fiber.

The application provides a hollow sphere reinforced metal matrix composite foam material finite element model modeling method, and belongs to the technical field of finite element modeling. In view of the random distribution characteristics of the hollow sphere reinforced composite foam material, a random geometric model of the hollow sphere in a specified space is generated through a random gravity accumulation algorithm; Gaussian distribution particle size data is generated based on a random variable algorithm of Box-Muller conversion; interference between the hollow spheres is eliminated in combination with an intrusion discrimination algorithm, so that a non-interference geometric model is generated; finally, finite element mesh division, material property definition and load condition loading are performed, and an accurate finite element model is constructed. The application not only can restore the structure of the composite foam material, but also can improve the prediction accuracy of the mechanical properties, thereby providing technical support for the design and optimization of the hollow sphere reinforced metal matrix composite foam material.

Method for depositing materials in a substrate (12), comprising: arranging a first section of a substrate in a vertically downward direction; directing an energy beam (16) from below the first section upwards towards the first section; forming a melt pool (26) in the substrate (12) using the directed energy beam (16), wherein the melt pool (26) is formed such that it is directed vertically downwards in the first section;and directing a particle stream (20) from below the first section upwards towards the first section, wherein at least some of the particles (20A) are configured to rise in the melt pool (26) towards the substrate (12), wherein the particles (20) are made of a different material than the substrate (12), and wherein the method further comprises: solidifying the melt pool (26) after the desired quantity of particles (20) has been dispersed in the melt pool (26) and the desired particles (20A) have risen in the melt pool (26) towards the substrate (12), and forming a coating on the substrate (12) which is a metal matrix composite coating with a desired degree of porosity near the unmelted sections of the substrate (12).

This invention discloses a short-process rapid solidification / powder metallurgy technology and its applications. The short-process rapid solidification / powder metallurgy technology of this invention includes the following steps: Step 1: Using metal wire or powder as raw material, a bulk blank with a thickness of 1-10 mm is deposited on a substrate using thermal spraying technology; the metal is selected from magnesium, titanium, copper, iron, nickel, zinc, aluminum, or their alloys; Step 2: The bulk blank is thermomechanically processed to obtain a sheet product; the thermal spraying technology includes flame spraying, supersonic spraying, arc spraying, plasma spraying, or cold spraying; the thermomechanical processing includes hot rolling, hot extrusion, or hot forging. This invention significantly shortens the preparation process, consumes less energy, has low overall production costs, and has wide applicability, and can be applied to the preparation of metal matrix composites, ultrafine-grained metal materials, heterostructure metal materials, layered structure metal composites, etc.

The utility model relates to a kind of metal composite material high-frequency fatigue test device, including support frame, testing device, protective cover and fixing device, testing device is installed on the support frame, the testing device is used to further test the tensile fatigue strength of metal by constantly increasing the force of stretching;The protective cover is installed on the testing device outside;The fixing device is installed on the testing device, and the fixing device is used to fix the metal to be tested.By the closed transmission chain of motor-reducer-screw integrated in test support, cooperate with the symmetrical limiting rod in displacement groove and displacement block limiting hole, the loading axis and the sample center line always keep high-precision coaxial, avoid eccentric error;Motor support supports reducer independently, suppresses bending deformation and resonance, improves long-term stability;Fixing device realizes sample trace eccentricity compensation, quick plug-in clamping and double-groove limiting positioning with the laminated structure of fixed block-adjusting disc-clamping block-mounting block, and different size samples can be replaced by a person.

The application discloses a continuous casting device and a continuous casting method for preparing a metal matrix composite material based on melt dispersion in-situ reaction, a mechanical stirring-melt dispersion device in a composite reaction crucible containing a melt A is rotated, then the melt B in the No. Ⅱ crucible is flowed into the dispersion member through the No. 2 discharge pipe, the melt B is dispersed into droplets under the rotation and dropped into the melt A, under the synergistic action of the mechanical stirring, the melt A and the melt B are reacted in-situ to obtain a composite melt containing in-situ reinforced particles, after the in-situ reaction is completed, the mechanical stirring is continuously carried out for melt dispersion, finally, the continuous casting melt is obtained by heating and adjusting the rotating speed of the mechanical stirring-melt dispersion, and the continuous casting is carried out, the method is characterized in that the mechanical stirring and the melt dispersion are ingeniously combined, the problem that the reinforcing phase is uniformly dispersed in the matrix can be effectively solved, and the reinforcing phase particle size is effectively refined.

The application provides an integrated thermal management and parallel interconnection humanoid robot data storage module and a preparation process, and relates to the technical field of humanoid robot special electronic module integration. The integrated thermal management and parallel interconnection humanoid robot data storage module and the preparation process comprise the following steps: based on the comprehensive requirements of high thermal conductivity, structural stability and parallel interconnection compatibility of the humanoid robot data storage module, a metal matrix composite material is selected and combined with a ceramic material to form a substrate; a high-thermal-conductivity composite substrate is prepared by using a laminated sintering process; and a heat diffusion layer structure is preset in the substrate to improve the overall heat conduction efficiency. By constructing the high-thermal-conductivity composite substrate and presetting the heat diffusion structure in the substrate, the overall heat conduction efficiency of the substrate is significantly improved, which lays a foundation for subsequent heat dissipation channels; a metallized microchannel is formed in the substrate by using a laser microprocessing and electrochemical deposition combined process, a high-efficiency longitudinal heat dissipation path is established, and the heat generated by high-power-density chips is effectively led out.

The present application relates to the field of powder metallurgy and surface modification technology, in particular to a kind of laser cladding metal-based composite wear-resistant powder; The powder comprises core layer, refractory metal carbide heat barrier transition layer coated on the surface of the core layer, and metallurgical bonding layer coated on the surface of the heat barrier transition layer;The structure utilizes the melting point and thermodynamic stability of the transition layer more than 3500 ℃, to build a heat barrier physical barrier with high thermal resistance characteristics in the cladding process.Its core is to block the high-temperature thermal decomposition path by physical blocking, to inhibit the decarburization reaction of ceramic hard phase;X-ray diffraction characterization confirms that no brittle decarburization product is generated in the coating, ensuring the phase structure integrity of the hard phase;The present application solves the problem of microstructure degradation of hard phase under extreme thermal cycle, significantly improves the phase structure stability and service life of the cladding layer.

Articles are manufactured using self-propagating high-temperature synthesis (SHS) reactions. Particulates including reactants can be blended to form a particulate blend. The particulate blend can be preformed. The preform article can be heated to a pre-heat temperature being below an auto-activation temperature and above a minimum compression activated synthesis temperature. Compressive stress can be exerted on the preform article at the pre-heat temperature to initiate the SHS reaction between the reactants and thereby form a product metallic compound. At approximately peak temperature, a flow stress of the product metallic compound can be exceeded to substantially reduce porosity and thereby form a shaped substantially dense article.

The application belongs to the technical field of catalysts and their applications, and relates to a metal-based composite nanocatalyst, a preparation method and application thereof. The metal-based composite nanocatalyst is obtained by forming an amorphous layer on the surface of Au / rare earth manganate and constructing a metal-support strong interaction through a NaBH4 aqueous solution reduction method at room temperature. The metal-based composite nanocatalyst constructed by the application has excellent catalytic oxidation activity and realizes high conversion rate of CO at room temperature.

1. Name of the designed product: Metal matrix composite plate (four). 2. Use of the designed product: Electrocatalysis and non-ferrous metal extraction. 3. Design points of the designed product: In shape. 4. Picture or photo that best shows the design points: Perspective view.

The present invention aims to provide an apparatus for current-assisted bidirectional ultrasonic additive manufacturing of metal laminated composite materials, belonging to the field of metal matrix composite additive manufacturing technology. It includes a current-assisted heat source and a substrate. The two ends of the substrate along its length are located within a groove. A metal foil is disposed on the substrate along its length. An electric push rod is disposed at the bottom of the groove along the length of the substrate, with its end connected to the substrate. The positive and negative electrodes of the current-assisted heat source are clamped at both ends of the metal foil and the substrate. An upper ultrasonic indenter vibrating axially and a lower ultrasonic indenter vibrating normally are respectively disposed at the top of the metal foil and the bottom of the substrate. The upper and lower ultrasonic indenters are in contact with the metal foil and the substrate, respectively. The width of the metal foil is smaller than the width of the upper ultrasonic indenter. This invention can be used for single-pass multi-layer rapid prototyping of high-strength metal laminated composite materials.

This invention discloses a high thermal conductivity magnesium-diamond composite material and its preparation method, belonging to the field of metal matrix composites. The method includes: roughening the surface of a magnesium or magnesium alloy matrix; preparing a diamond suspension and impregnating the matrix; anchoring diamond particles to the roughened surface of the matrix via ultrasonic embedding; preheating at 250-350℃, followed by hot rolling at 280-320℃ with a deformation of 20%-70%; and finally, stress-relief annealing and finishing. This invention employs a low-temperature solid-state composite process, completely avoiding harmful interfacial reactions between magnesium and diamond; the combination of roughening and ultrasonic embedding ensures uniform dispersion and firm anchoring of diamond particles; and hot rolling achieves dense encapsulation and strong interfacial bonding of the particles. The prepared composite material has a diamond volume fraction of 5%-40%, a thermal conductivity ≥400W / m·K (up to 650W / m·K), and a density ≤2.3g / cm³. 3 Furthermore, the process is simple and the cost is controllable, making it suitable for heat dissipation of high-end electronic devices and easy to mass-produce.

The application discloses a SiCp / Al laser welding method for constructing gradient heterogeneous interfaces by matching high-entropy alloy and intermediate layer, and relates to the technical field of metal matrix composite welding. The method comprises the following steps: S1, pretreating the surfaces to be welded and heterogeneous metal foils; S2, mixing 50%-80% of homogeneous aluminum alloy powder, 5%-30% of AlCoCrFeNi high-entropy alloy powder and active auxiliary components to prepare a pre-filled material; S3, coating the pre-filled material on the joint cross section and / or upper surface, and clamping and fixing the heterogeneous metal foils at the center position of the joint; and S4, performing laser welding. The core of the method is that when the content of the high-entropy alloy is 5%-20%, the titanium foils with a matching thickness of 20-100 microns or the zirconium foils with a matching thickness of 50-150 microns can actively construct the organizational structure with continuous composition transition and phase gradient distribution in the heterogeneous interface region. The application effectively alleviates the interface stress concentration caused by the mismatch of thermal physical properties, significantly inhibits the brittle fracture of the joint, and improves the comprehensive mechanical properties of the welded joint.