191 results about "Liquid alloy" patented technology

The invention aims to disclose a preparation process of a high-wettability aluminum alloy and a high-strength and high-conductivity copper-aluminum composite material, and relates to the technical field of metal composite materials, and the high-wettability aluminum alloy and high-strength and high-conductivity copper-aluminum composite material comprises the following components in percentage by weight: 1.2%-2.1% of Si, 0.5%-1.0% of Fe, 0.03%-0.1% of Cu, 0.05%-0.07% of Mn, 0.05%-0.08% of Mg, 0.05%-0.1% of Zn, 0.05%-0.1% of Zr, 0.02%-0.05% of Ti, 20 ppm to 50 ppm of rare earth, and the balance of aluminum and inevitable impurities. Comprising the following steps that high-wettability aluminum alloy is cast and rolled into a semi-liquid alloy aluminum strip, and the thickness of the semi-liquid alloy aluminum strip ranges from 5 mm to 7 mm; casting and rolling to form a semi-solid copper strip, wherein the thickness of the semi-solid copper strip is 0.8-2mm; and the semi-liquid alloy aluminum strip and the semi-solid copper strip are cast-rolled and compounded into a composite metal strip of 6.0 mm-8. 5mm. The high-wettability aluminum alloy has the beneficial effects that the high-wettability aluminum alloy contains Si, Fe, Cu, Zr, Ti and rare earth, and has the characteristics of high strength, high hardness, high wettability and easiness in rolling; the semi-liquid aluminum alloy strip and the high-strength and high-conductivity semi-solid copper strip are continuously cast and rolled, and the formed composite metal strip has the characteristics of high peel strength, difficulty in layering and high conductivity.

The invention relates to the technical field of methane cracking and hydrogen production, and discloses a metal-modified Co-Bi liquid alloy catalyst, wherein the catalyst uses Co as an active component, uses Bi low melting point metal as a solvent, and uses a third metal M as an auxiliary agent; the invention also discloses a method for preparing the catalyst, comprising: calcining a cobalt salt to generate cobalt oxide, and then forming CoO-MO X The mixture powder was finally heated under N2 and H2 atmosphere to obtain CoO‑MO X The powder is mixed with elemental Bi to obtain a cobalt-bismuth ternary liquid alloy catalyst; the present invention also discloses a method for applying the catalyst to methane cracking and hydrogen production, comprising: heating the preheating furnace to a certain temperature, introducing pure methane gas, and reacting under normal pressure, at a temperature of 500 to 700°C, with a methane space velocity of 1 to 100 mL / g·min, and after the reaction is completed, the temperature drops to room temperature in an N2 atmosphere, and the carbon product is taken out of the reaction tube after cooling. The catalyst disclosed by the present invention has the advantages of high activity, good stability, strong methane cracking ability, mild reaction conditions, simple preparation process, and long life.

The invention relates to a high-capacity Mg-RE (Ce, Y)-Sc-A < l-Ca >-based solid hydrogen storage alloy for a fuel cell and a preparation method thereof, the hydrogen storage alloy comprises the following components: Mg95-x-yCexYySc0.5 A < 4.5-z > Caz + m wt.% (NbF5 + V2O5), x, y and z in the formula are atomic ratios, 0.5 < = x < = 2, 0.5 < = y < = 2, 0.5 < = z < = 3, m is the percentage of NbF5 + V2O5 in the alloy, 2 < = m < = 8, and the mass ratio of NbF5 to V2O5 is 1: 1. The preparation method comprises the following steps: carrying out induction heating smelting under the protection of inert gas, and injecting molten alloy into a copper casting mold to obtain an alloy ingot; after the cast ingot is put into a quartz tube to be subjected to induction heating melting, under the pressure action of inert gas, liquid alloy continuously falls on the surface of a rotating water-cooling copper roller in a jetting mode, and rapid quenching alloy of a nanocrystalline microstructure is obtained; and the rapidly quenched alloy is subjected to mechanical crushing and sieving, and then is subjected to ball milling together with catalysts NbF5 and V2O5 in a high-purity argon gas environment, so that the ultrafine grain alloy powder is obtained. Through component design, microstructure regulation and control and addition of a multi-element catalyst, the thermal stability of alloy hydride is reduced, and the hydrogen absorption and desorption thermodynamic and dynamic performance of the alloy is improved.

The invention relates to the technical field of preparation of high-purity boron oxide, and discloses a purification method of high-purity boron oxide and a device thereof, and the purification method comprises the following steps: step 1, mixing crude boron oxide with a liquid metal alloy, and dissolving metal impurities through gradient temperature control; 2, applying ultrasonic treatment to the mixed system, introducing a vortex field, and stripping impurities on the surface of the boron oxide; 3, a liquid metal phase and a boron oxide solid phase are separated through cooperation of a magnetic field and a pulse high-voltage electrostatic field; 4, non-metal ion impurities are removed through a gradient porous ceramic adsorption bed; and step 5, melting boron oxide in vacuum and carrying out gradient cooling crystallization. By adopting the technical scheme of a Ga-I n-Bi-Er quaternary liquid alloy system, the technical effect of selective targeted removal of metal impurities is achieved, and compared with a liquid metal system depending on single phase solubility difference in the prior art, the defect that efficient chelating and dynamic settling separation of the impurities cannot be achieved at the same time is overcome.

The invention discloses a multi-mode sensing manipulator system based on flexible electronic skin, an integration process and a test method, and the multi-mode sensing manipulator system based on the flexible electronic skin comprises a flexible electronic skin sensor attached to a manipulator; the flexible electronic skin sensor comprises a flexible sheet and a liquid alloy network arranged in the flexible sheet, the liquid alloy network comprises an SSPP structure and a piezoresistive sensing structure located on the periphery of the SSPP structure, and the SSPP is a simulated surface plasmon; the piezoresistive sensing structure is connected with the signal processing circuit through a flexible wire bar and transmits a piezoresistive signal to the processor; the SSPP structure is connected with the SDR module through a coaxial line and is connected with the processor. According to the multi-mode sensing manipulator system based on the flexible electronic skin, the integration process and the testing method, the functions of multi-dimensional force feedback, substance penetrating type sensing and dynamic curved surface adaptation are achieved.

The invention relates to the technical field of preparation of catalysts, in particular to a CuNiSn-based molten catalyst for preparing graphene and a preparation method of the CuNiSn-based molten catalyst for preparing the graphene. The preparation method comprises the steps that S1, NiO-SnO2 precursor powder is prepared; s2, NiO-SnO2 powder and copper particles are mixed, high-purity nitrogen is injected into a reactor, then the temperature is increased to 800 DEG C, heat preservation is conducted for 3-4 h, and CuNi-Sn alloy blocks are obtained after the temperature is decreased to the room temperature; and S3, a smelting furnace is preheated in advance and pumped to a high-vacuum state, the CuNi-Sn alloy block and the alloy modifier are put into a crucible and put into the smelting furnace, it is ensured that the CuNi-Sn alloy block and the alloy modifier are fully mixed with the CuNi-Sn alloy block, then heat preservation is conducted for 10-15 h, and the CuNiSn-based fusion catalyst for preparing the graphene is obtained after the CuNi-Sn alloy block is cooled to the room temperature. The low solubility and high diffusivity characteristics of Ga and the ability of In to reduce the viscosity of the Ga-Sn liquid alloy, improve the carbon diffusion kinetics and enhance the electron transfer efficiency in cooperation with a conductive network of boron-doped graphdiyne jointly act on the waste plastic cracking process, the number of carbon layers of graphene can be effectively controlled, and the specific surface area and quality of graphene can be improved.

The present application relates to a kind of for the determination method of liquid alloy density in electrostatic suspension state in space station, after obtaining the photo of liquid alloy in electrostatic suspension state in space station, first photo is converted into pixel matrix and carries out gray scale processing, then deduct photo background by matrix operation.Further, the best binary grayscale threshold of pixel matrix is calculated, and pixel matrix is carried out binary processing.Then all boundary coordinates in pixel matrix are obtained by matrix operation, and each connected boundary is distinguished.Excluding bright spot boundary, the boundary coordinates and center coordinates of liquid alloy are obtained.Then the boundary equation of liquid alloy is obtained by using multi-order Legendre equation fitting liquid alloy boundary coordinates.Finally, the volume of liquid alloy is obtained by rotating integral to the boundary equation of liquid alloy, and then the density value of liquid alloy is obtained.The density value of the present application can be obtained by processing liquid alloy photo, and can be used for the determination of containerless liquid alloy density in electrostatic suspension in space station.

The invention relates to a Ga-Fe-based liquid alloy catalyst and a preparation method and application thereof, the Ga-Fe-based liquid alloy catalyst comprises a metal Ga, a metal Fe and a metal M, and the metal M is one of Ti, Mn, Co, Ni, Cu, Zr, Nb, Mo and W. According to the Ga-Fe-based liquid alloy catalyst provided by the invention, the metal Ga is taken as a matrix, the metal Fe and the metal M are taken as active catalytic sites, and based on the characteristic that the metal Ga can be mutually dissolved with other metals to form a low-melting-point alloy, the formed alloy catalyst can be changed into a liquid state for reaction at a reaction temperature, and due to the characteristic of liquidity of the liquid state, the alloy catalyst has good catalytic activity. The metal active components of ammonia synthesis can be continuously refreshed at the interface, so that nitrogen and hydrogen are more fully contacted with metal Fe and metal M, the mass transfer efficiency is higher, the phenomenon that active sites of a traditional solid catalyst are poisoned and inactivated is avoided, and N2 and H2 can effectively react to generate ammonia under the low-temperature and low-pressure conditions.

The invention belongs to the technical field of low-melting-point alloys, and provides a low-melting-point gallium-based liquid alloy and a preparation method and application thereof. The preparation raw materials of the gallium-based liquid alloy comprise gallium, indium, tin, zinc, bismuth, antimony, lead and rare earth metal with specific mass content. The rare earth metal comprises one or two of lanthanum, cerium and neodymium. A trace amount of one or two of lanthanum, cerium and neodymium is added into the gallium-based alloy, so that the purity of the alloy can be improved, the viscosity can be reduced, and the surface tension can be adjusted; by adjusting the formula of the alloy, the smelting time is shortened in the alloy smelting process stage, the efficiency is improved, the alloy cost is reduced, the alloy is more uniform macroscopically, the low-temperature stability of the alloy is further improved, and the alloy can be kept in a stable liquid state at the low temperature even 10 DEG C below zero and better meet the special climate requirements.

The invention discloses a design method and a preparation method of low-melting-point high-entropy liquid metal GaInSnBiZn, and belongs to the field of alloy research and development. The liquid metal alloy is formed by mixing five metal elements including Ga, In, Sn, Bi and Zn according to the equal atomic proportion, and aims at avoiding formation of intermetallic compounds and optimizing the microstructure through the high-entropy effect, and low melting point, high stability and good mechanical property of the alloy are achieved. The mixing enthalpy of the binary alloy and the formation enthalpy of the ternary alloy are calculated, thermodynamic analysis and phase diagram research are combined, the proportion of the five elements is determined, the high-entropy alloy is prepared through a vacuum arc melting method under the high vacuum condition, and the high purity and stability of the high-entropy alloy are ensured. The liquid alloy is low in melting point and high in stability, theoretical guidance and technical support are provided for design and preparation methods of novel liquid metal materials, some limitations in the prior art are overcome, and the liquid alloy has high practical application value.

The invention belongs to the field of oil and gas exploitation, geothermal exploitation and deep ground engineering, and discloses an oil and gas shaft crack plugging pressure repair material and method based on microwave heating bismuth-based alloy, the material comprises 74%-86% of bismuth-based alloy powder, 10%-15% of Fe3O4-SiO2 core-shell magnetic particles, 3%-8% of a microwave sensitizer and 1%-3% of a wetting agent. The repairing material is conveyed to the position, where shaft crack plugging repairing needs to be conducted, in the oil and gas shaft, then the repairing material is melted in a microwave heating mode, then the melted alloy is filled in shaft crack plugging, and then a rotating gradient magnetic field is used for repairing the oil and gas shaft crack. And the liquid alloy is driven to directionally migrate to a target crack area along the magnetic line, and after alloy liquid is cooled and solidified, pressure repairing of the oil and gas shaft crack plugging target position is achieved. Precise positioning, efficient filling, phase change control and complete recovery of the repairing material can be achieved in the extremely deep environment, and therefore the high-quality repairing requirement for oil and gas shaft crack plugging pressure repairing achieved through efficient liquefaction of plugging metal can be met.

The invention relates to a lanthanum oxide catalyzed high-capacity hydrogen storage alloy and a preparation method thereof, the hydrogen storage alloy comprises the following components: Mg < 85-x > Zr < x > Sm < 12-y > Nd < y > N < i < 5-z-m > Cu < z > Zn < m + n > wt.% La2O3, in the formula, x, y, z and m are atomic ratios, and 0 lt; x is less than or equal to 5, 0lt; y < = 3, 0lt; z < = 2, 0lt; m is less than or equal to 2, n is the percentage of La2O3 in the alloy, and n is more than or equal to 4 and less than or equal to 12. Preferably, the atomic ratio x: y: z: m is 3: 2: 1: 1, and n is equal to 7. The preparation method comprises the following steps: smelting by induction heating under the protection of inert gas, pouring a liquid alloy into a tundish, and continuously spraying the liquid alloy on the surface of a rotating water-cooled copper roller through a BN nozzle at the bottom of the tundish to obtain a rapidly quenched alloy with a nanocrystalline structure; and the rapidly quenched alloy is mechanically crushed and sieved, the sieved alloy powder and a certain amount of catalyst La2O3 are subjected to ball milling in an all-dimensional planetary high-energy ball mill under the protection of protective gas, and alloy powder with ultra-fine grains (nanoscale) is obtained. Through component design, microstructure regulation and control and addition of a catalyst, the thermal stability of alloy hydride is reduced, and the hydrogen absorption and desorption thermodynamic and dynamic performance of the alloy is improved.

The invention discloses a method for electrocatalytic reduction of carbon dioxide into carbon monoxide by using a gallium-based liquid alloy catalyst. According to the method, a gallium-based liquid alloy catalyst is used as a working electrode, a platinum sheet electrode is used as a counter electrode, an Ag / AgCl electrode is used as a reference electrode, an organic aqueous solution is used as an electrolyte, carbon dioxide is introduced, and carbon monoxide is prepared through electrocatalytic reduction, the preparation method of the gallium-based liquid alloy catalyst comprises the following steps: smelting liquid metal gallium, indium and tin to obtain a gallium-indium-tin alloy; adding cerium powder into the gallium-indium-tin alloy, and carrying out ball-milling mixing; and roasting the ball-milled mixture. The alloy is prepared by combining a high-temperature melting method on the basis of a mechanical ball-milling method, so that active sites of cerium in the gallium-indium-tin alloy are increased, the Faraday efficiency is remarkably improved, and the gallium-indium-tin alloy has good catalytic performance.

The invention discloses a double-medium cascade liquid cooling heat dissipation system, and relates to the technical field of computer hardware heat dissipation. Comprising a cold plate assembly, a circulating pipeline and a driving unit, the cold plate assembly comprises a lower-layer cold plate and an upper-layer cold plate, the lower-layer cold plate comprises a first liquid alloy cold plate and a second liquid alloy cold plate which are located in the area, where the GPU module is located, of the mainboard chip, and the upper-layer cold plate comprises a large liquid alloy cold plate located in the area, where the CPU module and the HBM module are located, of the mainboard chip. A first water-based cold plate and a second water-based cold plate are attached to the top of the first liquid alloy cold plate and the top of the second liquid alloy cold plate respectively, and a large water-based cold plate is attached to the bottom of the large liquid alloy cold plate. According to the invention, heat balance transfer between the high heat flux area of the GPU module and the low power consumption area of the CPU module and the HBM module can be realized, heat at the GPU module is partially transferred to a large-area cold plate of the CPU module and HBM module area, the heat dissipation pressure of the GPU module area is obviously reduced, and the overall heat dissipation efficiency is improved.

A method of forming a directionally solidified cast part using a casting system is provided. The casting system includes a chamber having a heating zone and a cooling zone separated by a baffle. The method includes pouring a liquid alloy into a mold shell. The mold shell is positioned on the cooling plate within the heating zone. The method further includes moving the mold shell from the heating zone into a cooling zone. The alloy transitions from a liquid state to a solid state within the mold shell while moving the mold shell from the heating zone to the cooling zone. The method further includes contacting the mold shell with the heat transfer member.

The invention belongs to the technical field of continuous casting, and particularly relates to a titanium alloy continuous casting device which comprises a ring seat, a tundish, a top cover, a first hydraulic cylinder and a flame cleaning machine. The tundish to be cleaned is rotated to the bottom of the top cover; meanwhile, the ring seat drives the new tundish to rotate to a pouring station of continuous casting production to replace the tundish to be cleaned; after the to-be-cleaned tundish rotates to the bottom of the top cover, the first hydraulic cylinder pushes the top cover to descend, so that the top cover covers the top surface of the to-be-cleaned tundish, at the moment, the flame cleaning machine burns the interior of the to-be-cleaned tundish, alloy residues are heated to be in a liquid state, and the liquid alloy residues flow out of the tundish; therefore, the cleaning work of the tundish is completed, the influence on continuous casting production is effectively reduced, and the efficiency of the continuous casting production is improved; and moreover, heat preservation can be effectively conducted on the tundish, and damage to the tundish and solidification of liquid alloy caused by the temperature difference generated when the low-temperature tundish is directly used are avoided.

The invention discloses a preparation method of a Sn-Bi-Ni-Cu quaternary liquid alloy methane cracking catalyst, production raw materials comprise composite melt metal and composite transition metal, and the mass ratio of the composite melt metal to the composite transition metal is 1: (0.3-1.2); the composite melt metal is composed of Sn and Bi according to the mass ratio of 1: (1.3-1.7); the composite transition metal is composed of Ni and Cu according to the mass ratio of 1: 0.15-1.2. The quaternary liquid alloy catalyst has the advantages that: 1) compared with the existing catalyst for hydrogen production by methane cracking, the quaternary liquid alloy catalyst provided by the invention can stably operate for more than 1000 hours in a range of normal pressure to 3MPa and air speed of 100-100mL. G <-1 >. H <-1 >, the active phase retention rate is more than 95%, and the quaternary liquid alloy catalyst is especially suitable for alkane pyrolysis hydrogen production, CO2 hydrogenation and easy carbon deposition reaction systems, and has a wide application prospect; a new material design thought and an engineering implementation scheme are provided for the field of liquid metal high-temperature catalysis; and 2) experiments show that the quaternary liquid alloy catalyst prepared by the method provided by the invention can significantly improve the carbon sequestration rate and the hydrogen yield.

The invention relates to the technical field of carbon dioxide geological utilization and storage, in particular to a sealing evaluation device and method for a low-melting-point alloy shaft plugging material, and the device comprises an observation cylinder, an outer cylinder, a simulation shaft, a gas channeling simulation mechanism, a formation pressure adjusting mechanism, a cooling mechanism, a shaft pressure adjusting mechanism and an image acquisition unit. The device is reasonable and compact in structure, alloy materials in the simulation wellbore are in an alloy melting stage, the sealing ejector pin prevents liquid alloy from flowing into the first gas injection hole, and after the alloy materials in the simulation wellbore are solidified, the sealing ejector pin is moved downwards, so that the upper end of the sealing ejector pin is located below the first gas injection hole, and the gas channeling simulation mechanism is communicated with the lower portion of the simulation wellbore; when the formation pressure adjusting mechanism works, the formation pressure adjusting mechanism is connected with the confining pressure cavity through the pressurizing hole, the simulation effect on the formation pressure around the simulation shaft can be achieved, the heating melting-cooling forming process of the low-melting-point alloy material is achieved, and the sealing capacity of the alloy plug-sleeve combination body under the actual underground working condition is evaluated.

This invention provides a fully open, long-endurance Mars battery and its fabrication method. The Mars battery comprises a vertical serpentine cell, an insertable anode current collector, a mesh cathode current collector, and a dustproof and breathable membrane. The fabrication scheme is as follows: preparation and assembly of the serpentine tubular solid electrolyte, preparation and coating of a gas diffusion and gas reaction dual-functional layer, preparation and filling of a Na / K-containing liquid alloy, integration of the rod-shaped anode and mesh cathode current collectors, and encapsulation with the dustproof and breathable membrane. The gas diffusion and gas reaction dual-functional layer is uniformly coated on the outside of the serpentine electrolyte tube, thus providing a 360° contact surface with the Martian atmosphere and exhibiting a fully open cathode characteristic, resulting in superior energy density compared to batteries with traditional single-sided gas reaction electrodes. This invention combines the advantages of solid electrolyte-based batteries—openness under the low atmospheric pressure of Mars—and the ability of the liquid alloy to fully wet the interface, coupled with the protection of the dustproof and breathable membrane, which will promote the design and development of long-endurance, all-weather Mars batteries.

The invention discloses a preparation method of a titanium alloy containing a dispersed nano precipitated phase. The method comprises the following steps: 1, heating and melting a spherical titanium alloy in an electrostatic suspension device; secondly, the spherical titanium alloy is melted and overheated, the laser is turned off after heat preservation, and when the liquid alloy melt is solidified again and the temperature drops, the laser is turned on again, and the process is repeated, so that the liquid alloy melt reaches the preset supercooling degree; thirdly, the liquid alloy melt is rapidly solidified at the preset supercooling degree; fourthly, the static suspension system is closed, and products fall into a container containing the liquid alloy to be cooled; and 5, packaging the cooled product, and then carrying out heat treatment. According to the method, the rapid solidification coupling heat treatment process is adopted, the distribution and size of the precipitated phase of the titanium alloy are effectively regulated and controlled through the genetic effect of the solidification structure, the titanium alloy containing the dispersed nanometer precipitated phase is obtained, collaborative optimization of the strength and plasticity of the titanium alloy is achieved, and the method is suitable for the field of aerospace.

The invention discloses a preparation method of Bi-In-Sn liquid metal dispersed particles, and belongs to the technical field of liquid metal, the method comprises the following steps: heating and melting bulk Bi-In-Sn alloy; adding a PVA (Polyvinyl Alcohol) solution which submerges the liquid alloy and carrying out secondary melting; stirring at a high speed until liquid particles are formed, and forming hydrogen bond auxiliary dispersion by PVA hydroxyl and a particle oxide layer; after the particles are solidified, washing with deionized water to remove PVA; and carrying out freeze drying or natural drying to obtain 40-500 [mu] m particles. According to the invention, only conventional heating and stirring equipment is needed, batch preparation can be realized within 10 minutes, the cost is low, the particle size of the particles is controllable, the particles are uniformly dispersed, and the large demand on low-temperature Bi-In-Sn particles in the fields of bone medicine and the like can be met.

The utility model relates to the technical field of lens manufacturing, in particular to a balsaming lens manufacturing gripping device which comprises an installation shell, an electric push rod is installed on the side of the installation shell, and a push block is arranged on the rear side of the inner wall of the installation shell. According to the utility model, the electric push rod pushes the push block back and forth and cooperates with the guide sliding block to guide and slide along the track of the guide groove, so that the two movable rods can be assisted to rotate by taking the connection position of the movable rods and the inner bottom wall of the mounting shell as a fixed point, and the two pieces of elastic silica gel can clamp lenses with different specifications; a controller connected with equipment can heat the internal Field alloy to be in a liquid state or a soft state, so that the elastic silica gel can deform to wrap the surface of the lens, the liquid alloy flows under pressure in the wrapping stage and adapts to the outline of a filling body, seamless clamping is achieved, then the alloy is cooled through a micro fan, heating of the alloy is stopped, and the alloy is rapidly solidified. A rigid structure is formed to cooperate with the concave-convex strips to lock the object.

The invention discloses a corrugated hydraulic transmission device based on liquid alloy in a high-temperature service environment and a using method, and belongs to the field of high-temperature hydraulic transmission. The device comprises power sources A and B, corrugated drivers A and B, a high-low temperature pipeline, heat insulators A and B, a high-temperature liquid alloy actuator and a sensor accessory, wherein the paired power sources, heat insulators and corrugated drivers can improve the transmission stability. The power source drives a corrugated pipe of the corrugated driver to stretch out and draw back to excite low-temperature liquid metal in the pipe. Multiple heat insulation measures in the heat insulator separate the high-temperature side and the low-temperature side of the liquid metal, and it is guaranteed that the power source is not damaged by high temperature; a solid flange in the high-temperature liquid alloy actuator bears the pressure of the liquid metal and transmits the pressure to an output rod for external use; the fitting measures input and output signals of the transmission system, and high-precision displacement / force control of the actuator is ensured after the signals are closed. The bearing temperature is high, the structure is compact, the performance is reliable, the completely-sealed structure has the advantages of zero leakage, no need of lubrication, easy maintenance and the like, and the good popularization value is achieved.

The invention discloses a paste lithium metal negative electrode material as well as a preparation method and application thereof, belongs to the technical field of solid-state batteries, and solves the problem that the overall electrochemical impedance of a solid-state battery of a lithium metal electrode in the prior art is large and the exertion of electrochemical performance is influenced. The paste lithium metal negative electrode material is characterized by comprising lithium powder, a liquid alloy and a surface tension regulator, the mass ratio of the lithium powder to the liquid alloy to the surface tension regulator is (0.5-7): (2-8.5): 1. The pasty lithium metal negative electrode material is pasty on the whole at room temperature or low temperature, has good plastic deformation capacity and relatively strong adhesive force, can effectively solve the problem of poor interface contact, effectively reduces the migration resistance and deposition potential energy of lithium ions, and enhances the stability of the interface; meanwhile, compared with an interface modification layer which is made of liquid alloy in the prior art, the charge transfer process of the lithium ions on multiple phase interfaces is avoided, and the lithium ion battery has better charge transfer dynamics.

A method for manufacturing a metal solid-to-metal solid bonded body, capable of improving a bond strength on a bonding face, and a composite member. A solid metal body containing a first component is brought into contact with a solid metal material composed of a compound, an alloy, or a non-equilibrium alloy, which contains both a second component and a third component having positive and negative heats of mixing respectively relative to the first component, and heated at a predetermined temperature for a predetermined time while applying a predetermined pressure to between the metal body and the metal material. Thereby, the first component and the third component are interdiffused with each other, and a liquid alloy containing the first component and the third component, which has been generated in a region where the first component and the third component have interdiffused with each other, is discharged.

The invention discloses a method for controlling the solidification structure form of a molybdenum-niobium-tungsten single-phase alloy, which comprises the following steps of: 1, mixing metal molybdenum, metal niobium and metal tungsten to prepare a metal mixture with an approximately equal atomic ratio; secondly, the metal mixture with the near-equal atomic ratio is subjected to multiple times of vacuum electromagnetic suspension smelting in the argon atmosphere, and high-temperature liquid alloy is obtained; and thirdly, the high-temperature liquid alloy is poured into a water-cooled copper crucible or a graphite clay crucible with auxiliary heating to be naturally cooled, and the molybdenum-niobium-tungsten single-phase alloy of the columnar crystal structure or the dendritic crystal structure is obtained. According to the method disclosed by the invention, the high-temperature liquid alloy is prepared by adopting a vacuum electromagnetic suspension smelting method, and water-cooled copper crucibles or graphite clay crucibles with different temperatures are used as casting containers, so that the cooling rate in the natural cooling process of the high-temperature liquid alloy can be controlled; and the structure form after solidification is controlled to be a dendritic crystal structure or a columnar crystal structure, and the method is suitable for the technical field of casting of multi-principal-element refractory alloy materials.

The present application relates to the technical field of battery thermal management, in particular to a preparation method of a thermal activation battery with silicon-aluminum alloy high-temperature phase change material; in the preparation method, a certain amount of aluminum powder and silicon powder are selected as raw materials and mixed to obtain a liquid alloy by heating, the liquid alloy is defoamed and degranulated, and finally the bulk alloy is cooled to obtain a block alloy, the block alloy is sliced according to the size to obtain a sheet material, and the sheet material is assembled into the battery body in a layer insertion manner; the alloy phase change material prepared by the present scheme has high thermal conductivity, suitable phase change temperature and phase change enthalpy value, thereby having strong thermal management efficiency, being beneficial to regulating and controlling the surface temperature of the battery and prolonging the service life of the battery; in the present scheme, the alloy phase change material is cut and assembled into the thermal activation battery, and has the advantages of low cost, simple operation, good use effect and the like.

The application discloses a self-repairing flexible bionic composite material with high tear resistance and a preparation method thereof. The method is characterized in that a room-temperature self-repairing flexible polyurea elastomer SSPU is prepared by reacting THI, DBI and PDMS. The self-repairing flexible bionic composite material with high tear resistance is prepared by physically mixing the room-temperature self-repairing flexible polyurea elastomer SSPU and a gallium-indium-tin liquid alloy. The self-repairing flexible bionic composite material has the advantages of not affecting the flexibility of the material, greatly improving the tear resistance of the material, and having excellent photo-thermal response characteristics and fast photo-thermal repair capacity, and is suitable for preparing various stretchable and functional devices.

The invention discloses nano samarium oxide dispersion strengthened NiCoCrAlY alloy powder and a preparation method thereof, and relates to the technical field of alloy powder preparation. The method specifically comprises the following steps that a NiCoCrAlY alloy bar is smelted, then heat preservation is conducted, and a liquid alloy melt is obtained; the liquid alloy melt is subjected to high-pressure inert gas atomization powder preparation, nano samarium oxide flow perpendicular to the liquid flow direction of the alloy melt is synchronously introduced in the powder preparation process, high-temperature alloy liquid drops formed during atomization are impacted and wrapped, and target powder is obtained; performing hot isostatic pressing on the target powder to obtain a target alloy bar; a target alloy bar is repeatedly subjected to multiple smelting, high-pressure inert gas atomization powder manufacturing and hot isostatic pressing treatment, an alloy bar is obtained, then the alloy bar is subjected to high-pressure inert gas atomization powder manufacturing, and the nanometer samarium oxide dispersion strengthening type NiCoCrAlY alloy powder is obtained. By adopting the preparation method disclosed by the invention, the nano samarium oxide dispersion strengthened NiCoCrAlY alloy powder with excellent morphology, nano samarium oxide dispersity and purity can be obtained.

The present invention discloses a gas purifier, which belongs to the technical field of gas purification equipment, and includes a first gas purification device and a second gas purification device arranged adjacent to each other, wherein the first gas purification device includes a purification tank for containing liquid alloy, a telescopic device arranged at the bottom of the purification tank, a pressing assembly installed at the output end of the telescopic device, an extrusion molding assembly and a material removal assembly installed at the top of the purification tank, a gas inlet is provided at the bottom of the purification tank, a gas outlet is provided at the top of the purification tank, the pressing assembly is slidably matched with the inner wall of the purification tank, the telescopic device drives the pressing assembly to move along the vertical direction, the pressing assembly presses the solid reaction material to the extrusion molding assembly, and then removes it through the material removal assembly, the pressing assembly pushes the liquid alloy when rising, and the liquid alloy enters the second gas purification device through the filter hole. The device of the present invention can process the generated solid reaction material in time.