171 results about "Metal foam" patented technology

Liquid metal thermal interface materials and their uses in electronics assembly are described. In one implementation, a semiconductor assembly includes: a semiconductor die; a heat exchanger; and a thermal interface material (TIM) alloy bonding the semiconductor die to the heat exchanger without using a separate metallization layer on a surface of the semiconductor die or a surface of the heat exchanger. The TIM alloy may be formed by placing a TIM material between the semiconductor die and the heat exchanger, the TIM material comprising a first liquid metal foam in touching relation with the surface of the semiconductor die, a second liquid metal foam in touching relation with the surface of the heat exchanger.

A bipolar plate-gas diffusion layer (GDL) assembly for a polymer-electrolyte-membrane fuel cell includes a flat metallic bipolar plate and a porous metal GDL adjacent to and in direct contact with the flat metallic bipolar plate. The porous metal GDL includes flow channels defined by flow channel walls with flow channel surfaces. The flow channel walls and flow channel surfaces have an average porosity generally equal to an average porosity of an interior of the porous metal GDL.

The invention discloses copper metal foam and a preparation method of the copper metal foam, the copper metal foam comprises a copper-based supporting body and foamy copper supported by the supporting body, and the copper-based supporting body comprises at least one of a copper net and a copper foil. In the application, the copper-based support body is arranged to provide support for the foamy copper, so that the strength of the copper metal foam can be improved while the lightweight of the material is met, a new-generation multifunctional material solution is provided for the fields of new energy, 5G communication and the like, and the copper metal foam is suitable for the fields of new energy battery current collectors, electromagnetic shielding devices, environment-friendly catalytic carriers and the like.

The invention discloses an integrated battery module integrated with a thermal management device, which belongs to the field of thermal management of lithium ion batteries and comprises a shell, an outer wall, an inner wall, a micro-channel, an inlet, an outlet, an accommodating bin, a bare roll core upper cover plate and a tab lead-out port. According to the invention, the heat dissipation shell is used as a battery core packaging shell, and as only one layer of water-cooled jacket (micro-channel) thin wall is arranged between the cooling liquid and the bare roll core for producing heat, the heat resistance is extremely small, and the heat dissipation path is shortest, the fastest heat dissipation rate and the optimal temperature uniformity can be realized, the heat management performance is improved, and the battery is particularly suitable for ultrahigh-rate charge and discharge scenes; a battery cell independent shell and a part of module structural members are omitted, high function integration is realized, the weight is reduced from the source of the system, and the potential of light weight is larger; the integrated heat dissipation shell serves as a main force bearing structure, and the compression resistance and impact resistance of the integrated heat dissipation shell are far better than those of a traditional liquid cooling plate only serving as an additional part in combination with the enhancement effect of metal foam. Redundant parts are reduced, and the mass energy density and the volume energy density of the battery pack are improved.

The present invention relates to the field of nuclear technology. A container for storing, transporting, and disposing of solid radioactive waste comprises a canister made of reaction-sintered silicon carbide with a free silicon content of 3% to 30% by weight, with a fumed silicon carbide layer deposited on the canister's surface. The canister's outer layer is made of metal foam with an open porosity of 60% to 70% and a pore size of 5 mm to 6 mm. The pores are filled with dispersed boron carbide powder of 40 to 50 μm in diameter, thereby protecting the environment from nuclear radiation emitted by high-level radioactive waste. A stainless steel cylinder with a thickness of 1 mm to 1.5 mm, intended to contain radioactive waste, is placed within the silicon carbide canister. A 5 mm gap between the inner surface of the silicon carbide canister and the stainless steel cylinder is filled with boron carbide powder, thereby protecting the environment from nuclear radiation emitted by high-level radioactive waste. The silicon carbide canister is sealed with a lid made of silicon carbide using a reaction welding method. The metal foam used as the metal foam with an open porosity is selected from the group consisting of titanium, aluminum, and copper. The present invention can increase the strength of containers for solid radioactive waste.

The invention discloses a protection device for electrical installation, and relates to the technical field of electrical equipment installation auxiliary devices, the protection device comprises a protection shell, heat continuously generated by a cable joint is absorbed through a heat conduction seat, graded heat dissipation action is triggered through the thermal driving characteristic of a shape memory alloy spring, when the temperature rises, a rotating plate turns over to form a directional air guide channel, and the heat dissipation effect is improved. Under the high-temperature extreme working condition, the self-adaptive structure further focuses the airflow, the metal foam and the phase-change material cooperatively cool the airflow, deep heat dissipation is achieved, heat is prevented from being accumulated in the protective shell and around the connector, the whole heat dissipation process does not need external energy, driving is completely depended on heat generated by the cable, and the service life of the cable is prolonged. And meanwhile, the rainproof and dustproof effects are guaranteed through the graded sealing design, the thermal aging speed of insulating glue, a heat-shrinkable sleeve and other insulating materials at the joint is effectively delayed, the insulating protection effect is enhanced, and the safety risk caused by high temperature is reduced.

Metal-foam mesh structures are used in a variety of applications where flexible mesh structures are utilized, such as steam chamber wicks and various diaphragms and energy electrodes. The new metal-foam mesh hybrid material has a three-dimensionally connected microporous structure and has improved mechanical properties, including good strength, ductility, flexibility, and other properties.

This application relates to the field of trace detection technology, and more specifically, to a method for detecting trace gaseous substances, a thermal desorption pre-concentrator, and its preparation method. The preparation method of the thermal desorption pre-concentrator includes: sequentially cleaning, acid-activating, drying, and cutting a metal foam sheet; immersing a metal foam substrate in an adhesive and then removing it; dispersing a particulate adsorbent phase on the surface of the metal foam substrate; guiding the particulate adsorbent phase into and adhering to the internal pore surface of the metal foam substrate through negative pressure filtration to obtain a metal foam substrate loaded with the particulate adsorbent phase; applying a DC voltage to the metal foam substrate loaded with the particulate adsorbent phase; placing the metal foam adsorbent in a housing with an airflow channel, and electrically connecting the metal foam adsorbent to a conductive electrode. This application is advantageous for achieving rapid and complete desorption of the target analyte, improving pre-concentration efficiency, and increasing detection response speed.

The invention relates to the technical field of trace detection, in particular to a trace gaseous substance detection method, a thermal desorption preconcentrator and a preparation method of the thermal desorption preconcentrator. The preparation method of the thermal desorption preconcentrator comprises the following steps: sequentially carrying out cleaning treatment, acid activation treatment, drying treatment and cutting treatment on a metal foam sheet; the method comprises the following steps: dipping a metal foam substrate in a binder, taking out the metal foam substrate, dispersing a granular adsorption phase on the surface of the metal foam substrate, and guiding the granular adsorption phase to enter and be attached to the internal pore surface of the metal foam substrate through negative pressure suction filtration, so as to obtain the metal foam substrate loaded with the granular adsorption phase; applying a direct current voltage to the metal foam substrate loaded with the granular adsorption phase; the metal foam adsorption body is arranged in the shell with the airflow channel, and the metal foam adsorption body is electrically connected with the conductive electrode. According to the invention, rapid and sufficient desorption of the target object is realized, and the pre-concentration efficiency and the detection response speed are improved.

The present invention discloses a method for regulating SiC f The invention relates to a method for strengthening the toughness of heterogeneous brazing joints of SiC composite materials, which belongs to the field of brazing technology and adopts the structure of high entropy brazing material-metal foam-high entropy brazing material to strengthen the toughness of SiC composite materials. f / SiC composite heterogeneous joints are brazed; wherein the high-entropy brazing filler metal is composed of Co, V, Pd, Ta, and Cr, with the mass percentage of each element being 18-25%. By introducing a buffer metal foam and a dedicated high-entropy brazing filler metal to work synergistically, the present invention achieves a microstructure gradient effect based on secondary high-entropy treatment. The metal foam's inherent 3D structure exhibits a long-lasting mechanism throughout the entire welding process. The combination of the dedicated high-entropy brazing filler metal and the buffer metal foam results in a brazed joint with excellent microstructure, low residual stress, high strength, and good toughness, suitable for high-temperature service.

A capacitor and supercapacitor design are based on metal-foam electrodes. An electrolytic capacitor has a metal foam dielectric (e.g., aluminum oxide, titanium oxide, iron oxide, or others). An electric double-layer supercapacitor has an electrode with metal foam (e.g., copper, nickel, titanium, iron, steel alloy, or aluminum) filled with activated carbon, or graphene, or metal foam with activated carbon foam, or any combination of these to enhance the electrical conductivity and thus the power and capacity of the cell. A pseudocapacitor device has an electrode with metal foam (e.g., iron, cobalt, nickel, copper, titanium, aluminum, magnesium, tin, manganese, and stainless steel, and their alloy foams) coated with an oxide-or hydroxide-based material containing highly active zones. The pseudocapacitor metal-foam electrode can also be filled with activated carbon in the form of a slurry to further enhance its capacity.

The invention relates to a safety heat exchanger 1 with a first flow channel 2 for a first medium and with a second flow channel 3 for a second medium, wherein the two flow channels 2, 3 are separated from each other by a double wall 7, wherein the double wall 7 has a first wall 8 and a second wall 9 which define a leakage space 11 between them, wherein an open-pore metal foam 12 is arranged in the leakage space 11, which is in contact with both walls 8, 9.

The present invention relates to a method for preparing catalyst powder for electrolysis of aqueous ammonia, comprising the steps of: (A) immersing a metal foam support as a working electrode in an electrolyte solution containing a precursor of an active metal; (B) forming active metal crystal particles on the metal foam support by applying cyclic voltage and current, to form a metal foam-catalyst composite; and (C) physically pulverizing the metal foam-catalyst composite to form metal foam-catalyst composite powder.

The application discloses a water-based foam extinguishing agent performance test integrated device and a test method, which comprises a foaming device, a glass foam pipe and a metal foam pipe arranged in the foaming device, an operation terminal and an air compression device connected with the foaming device; the upper part of the glass foam pipe is provided with an opening, the opening is connected with a foam tank through a pipeline, and a feeding pump and a valve F1 are further arranged between the foam tank and the opening; the upper part of the metal foam pipe is provided with a first opening and a second opening, the first opening is connected with the foam tank through a pipeline provided with a valve F3, and the foam in the foam tank flows into the glass foam pipe and the metal foam pipe through the valve F1 and the valve F3 respectively; and the second opening is connected with a foam gun through a pipeline. The application simplifies the test equipment, concentrates three foam performances (foaming, stable foaming and extinguishing performance) in one device, and can measure the foaming multiple, liquid separation time and extinguishing time and other parameters of the foam extinguishing agent in sequence through simple parameter setting and valve switching.

The present invention relates to a method for preparing a supported catalyst, comprising: providing a metal foam body A made of metallic cobalt, an alloy of nickel and cobalt, or an arrangement of superimposed layers of nickel and cobalt; applying an aluminum-containing powder MP to the metal foam body A to obtain a metal foam body AX; heat-treating the metal foam body AX to form an alloy between the metal foam body A and the aluminum-containing powder MP, thereby obtaining a metal foam body B; oxidatively treating the metal foam body B to obtain a metal foam body C; and applying a catalytically active layer comprising at least one support oxide and at least one catalytically active component to at least a portion of the surface of the metal foam body C to obtain a supported catalyst. The present invention also relates to a supported catalyst obtainable using this method and to the use of the supported catalyst in chemical conversions.

The invention discloses a battery pole piece and a preparation method thereof, and belongs to the technical field of batteries. Mixing and compacting metal powder and a pore-forming agent, and sintering at different temperatures in an inner layer and an outer layer to obtain a metal foam frame with different pores in the inner layer and the outer layer; performing hot-pressing compounding on the current collector base material and the metal foam frame, and controlling the porosity of one side of the metal foam frame close to the current collector to be high and the porosity of one side far away from the current collector to be low; and sequentially coating a composite conductive coating and an active material layer on one side, far away from the current collector, of the metal foam frame to obtain the battery pole piece with the optimized structure and process. According to the pole piece, collaborative optimization of volume expansion buffering, mechanical strength improvement and ion transmission efficiency enhancement is realized through gradient pore distribution design and a composite conductive coating process.

A power storage module (10) is provided with a plurality of power storage devices (20) and a case (30) that houses the plurality of power storage devices (20), the power storage devices (20) discharge internal gas toward one side in a first direction when an abnormality occurs, and a protection member (40) is provided on one side in the first direction of the power storage device (20) on one side in the first direction inside the case (30). A metal foam body (50) is provided on a surface of the protective member (40) facing the electricity storage device (20) in the first direction.

A display module and a display device which can improve a heat-dissipation performance and a shock absorption function while reducing a bezel area include a cushion plate with a metal foam that has both a heat-dissipation function and a cushion function, so that both of an effective heat-dissipation function and an effective cushion function can be realized only using the metal foam without addition of a separate heat-dissipation layer or cushion layer. Further, the metal foam of the cushion plate has very excellent heat-dissipation function and cushioning function at only a small thickness thereof, so that a total thickness of the cushion plate can be greatly reduced, and the bezel area can be reduced.

A power storage module (10) comprises: a plurality of power storage devices (20); and a housing (30) for accommodating the plurality of power storage devices (20). In a case of abnormality, the power storage devices (20) discharge an internal gas to one side in a first direction. Inside the housing (30), a protective member (40) is provided on the one side in the first direction of the power storage devices (20) located on the one side in the first direction, and a metal / foamed body (50) is provided on a surface, facing the power storage devices (20), in the first direction of the protective member (40).

The present application provides a method for manufacturing a metal foam. The present application can provide a method for manufacturing a metal foam, which is capable of forming a metal foam including uniformly formed pores and having excellent mechanical properties as well as the desired porosity, and a metal foam having the above characteristics. In addition, the present application can provide a method capable of forming a metal foam in which the above-mentioned physical properties are ensured, while being in the form of a thin film or sheet, within a fast process time, and such a metal foam.

In order to provide a heating device which has a compact design, low manufacturing costs and a fast heating time at a low surface temperature of a heating element of the heating device, a heating device (100) is proposed comprising a coolant line section (10) wherein an induction coil (11) and a metal foam heating element (12) are arranged within the coolant line section (10), wherein the induction coil (11) is arranged within the metal foam heating element (12).

The invention relates to a heating device (10), in particular for infrared cabins, saunas, steam baths or the like, and a method for carrying out an infusion with a heating device, in particular for infrared cabins, saunas, steam baths or the like, wherein the heating device has a heating device (11) for emitting heat energy and a storage device (12), wherein the storage device has at least one storage medium (13) for storing heat energy, wherein a liquid for carrying out an infusion can be supplied to the storage device in such a way that the liquid can be applied to the storage medium, wherein the storage medium is made of a metal foam, ceramic foam, sintered metal or a sintered ceramic.

The present application provides a turbojet engine and aircraft, relating to the field of aero-engine technology, comprising a casing having a combustion chamber, a compressor and a turbine respectively arranged at the air inlet and air outlet of the casing, and a tail nozzle connected to the turbine, wherein the compressor and the turbine are connected in a transmission manner, and a micro-perforated plate metal foam composite structure is provided along the circumferential direction on the inner wall of the air inlet of the casing to reduce the noise generated when air enters the casing. A plurality of axially extending airflow channels are provided along the circumferential direction on the inner wall of the tail nozzle, each airflow channel including a plurality of interconnected airflow grooves, and the plurality of airflow grooves constituting the same airflow channel are connected end to end along the axial direction of the tail nozzle so that each airflow channel forms a Tesla valve structure. The flow diversion direction of the Tesla valve structure is consistent with the direction of airflow ejected from the casing into the atmosphere, effectively suppressing the generation of noise at the sound source, achieving a broadband noise reduction effect, and reducing the complexity and weight of the system, thereby controlling thrust loss to an extremely low level.

The utility model discloses a metal foam collecting frame of a metal band sawing machine, and particularly relates to the field of metal foam collecting frames, which comprises a frame body, and is characterized in that a first limiting groove and a second limiting groove are arranged on the inner wall of the frame body, the first limiting groove is arranged above the second limiting groove, a coarse strainer is connected inside the first limiting groove in a sliding mode, and a fine strainer is arranged inside the coarse strainer. And shaking assemblies are fixedly connected to the bottoms of the two sides of the coarse filtering net. The stepping motor is started, the stepping motor drives the third connecting plate at the output end to swing, the third connecting plate swings to enable the first movable shaft and the fourth connecting plate to move, and the first movable shaft and the fourth connecting plate move to drive the second connecting rod, the fifth connecting plate, the second movable shaft, the second connecting plate, the first connecting plate and the first connecting rod to move. The first sliding block and the second sliding block move up and down in the sliding way, the first fixing rod and the second fixing rod move up and down, the thick leakage net and the thin leakage net are driven to shake, and the effect of separating metal foam from liquid is achieved.

The present invention is applicable to the technical field of electrocatalytic water decomposition, and provides a barium-modified iron oxyhydroxide, a preparation method thereof, and an application thereof. The preparation method comprises: growing a barium-modified iron oxyhydroxide nanosheet array on a metal foam substrate having a porous structure by a hydrothermal method. The specific steps comprise placing a metal foam having a large specific surface area in a polytetrafluoroethylene reactor, adding a mixed solution containing urea, ammonium fluoride, iron salt, and barium salt, and performing a hydrothermal reaction to obtain a barium-modified iron oxyhydroxide nanosheet array. The present invention utilizes a one-step hydrothermal method to grow a barium-modified iron oxyhydroxide nanosheet array on a metal foam substrate. The method is simple and efficient. Furthermore, the barium-modified iron oxyhydroxide nanosheet array is used as a neutral water oxidation electrode, which has abundant active sites and a unique electronic structure, and exhibits excellent neutral water electrolysis catalytic activity and stability.

According to a first example of the present disclosure, there is presented a semiconductor device comprising: a die constituting a top layer of the semiconductor device, preferably made of silicone; a lead frame constituting the underlying layer of the semiconductor device, having a high conductivity in the range between 6.3 * 107 Siemens and 1 * 106 Siemens, more preferably 1 * 107 Siemens (the conductivity is typically measured as Siemens / meter S / m, the conductivity of the Cu alloy lead frame is in the range between 5 * 107 S / m and 6 * 107 S / m), for example made of L / F C19210 material; a first layer formed of a metal foam, the first layer positioned between the lead frame and the die, having a thickness preferably in the range of 500 nm to 5000 nm, more preferably 2000 nm, and having a porosity in the range of 30% to 90%, preferably 60%; and a second layer positioned between the die and the lead frame, only partially in surface contact with the first layer.

The invention relates to a method (100) for producing a metal foam product (1) with a metal foam made of an aluminum-containing material, comprising the method steps (102, 104, 106, 108): providing a tool mold (1000) which has at least one section (1008) made of a cast aluminum material, wherein the section delimits at least part of the mold interior (1006) of the tool mold; at least sectionally coating an inner surface (1010) of the section facing the mold interior with a release agent (1012); filling the mold interior of the tool mold with the aluminum-containing material and a blowing agent; heating the tool mold with the material and blowing agent located therein, such that the material is foamed. The invention further relates to a tool mold. The method orThe tool mold according to the invention ensures energy-efficient and uniform heating of the aluminum material in the tool mold.

The present invention provides a self-breathing solid oxide fuel cell stack supported by a foam metal, which can improve the mechanical strength of the battery cells and reduce the volume and cost of the solid oxide fuel cell stack; it can also promote the electrochemical reaction at the anode and increase the power density of the battery cells. The present invention provides a solid oxide fuel cell stack, comprising: a first end plate, a second end plate, and a plurality of stacked battery cells disposed between the first and second end plates, wherein the battery cells include: a bipolar plate, composed of a cathode plate and an anode plate bridged together, with a clamping structure formed between two adjacent bipolar plates; a battery cell, which is embedded in the clamping structure; and a foam metal, with the anode plate and the battery cell respectively attached to either side of the foam metal, and the cathode plate formed into a concave platform structure with multiple ventilation holes.

The invention discloses a composite phase change energy storage and heat management system and an optimization method thereof. The system comprises a TPMS metal support structure module, a phase change energy storage module, a temperature field monitoring module, a field driving optimization control module, a heat flow regulation and control module and an energy recovery module. A temperature field driving design strategy is introduced, a non-linear mapping relation between a temperature field and porosity distribution is established by utilizing nTopology software, a multi-scale porosity gradient which continuously changes from low to high is formed, and dynamic balance between the heat-conducting property and the energy storage capacity is achieved. The system obtains the internal temperature distribution in real time through the sensing module, and calculates the optimal porosity distribution and heat flow path through a field-driven algorithm, thereby achieving the self-adaptive adjustment of the thermal performance. Compared with a traditional uniform-pore metal foam composite material, the heat conduction efficiency and the melting rate are remarkably improved, the phase change time is shortened by 20% or above, and the total energy storage capacity is improved by about 10%. The device can be widely applied to electronic device cooling, solar heat storage, heat management and intelligent energy systems.

The invention provides a preparation method of a foam metal composite hydrogen storage material, which comprises the following steps: mixing vanadium-containing alloy powder, a pore-forming agent and an organic binder, carrying out compression molding, and carrying out heat treatment to densify the alloy so as to obtain an inner-layer pressure-bearing framework; depositing a magnesium-titanium nano composite layer through a magnetron co-sputtering technology; growing a graphene layer through chemical vapor deposition; immersing the framework on which the graphene layer grows into a solution containing palladium salt, and generating and loading palladium nanoparticles on the surface of graphene in situ to form a surface catalyst layer, so as to obtain a metal foam framework; and immersing in a solution containing zircon salt and an organic ligand, and growing a metal organic framework on the surface in situ through solvothermal reaction to obtain the foam metal composite hydrogen storage material. The mechanical strength, the hydrogen storage capacity and the dynamic performance of the material are improved, the stability of the material in hydrogen absorption and desorption circulation is improved, and the defects of a traditional hydrogen storage material in the aspects of mechanical performance, hydrogen storage efficiency, circulation stability and the like are overcome.