1209 results about "Metallic particle" patented technology

To provide a metal paste capable of efficiently providing a joined body having reliability high in electrical and mechanical strength even when narrowed in pitch, and to provide a method for manufacturing the joined body.SOLUTION: A metal paste comprises metal particles and a solvent, and has a shear viscosity of 1 to 100 Pa_s, measured at a shear rate of 10 s-1 at 25°C, wherein a value (TI value) obtained by log-transforming a ratio of a shear viscosity measured at a shear rate of 0.1 s-1 and a shear viscosity measured at a shear rate of 1 s-1 is 0.7 to 1.0.SELECTED DRAWING: Figure 4

The invention discloses a method for reducing the inclusion degree of metal particles in additive manufacturing of a spaceflight propulsion chamber. The method comprises the following steps that 1, a printing layer data set is constructed; 2, constructing an initial multi-scale graph structure; 3, outputting an inclusion risk probability graph of the current printing layer based on a multi-scale graph growth generation network; 4, inputting the inclusion risk probability graph into a mimicry hummingbird optimization algorithm to generate a path optimization target space; 5, performing path search by adopting a mimicry hummingbird optimization algorithm, and outputting a final scanning path; 6, controlling a laser to perform printing and scanning operation according to the final scanning path; 7, inputting process feedback data into the multi-scale graph growth generation network, and outputting an updated inclusion risk probability graph of a next printing layer; and 8, the step 4 to the step 7 are executed repeatedly till all the printing layers are printed. According to the method, the multi-scale graph growth generation network and the mimicry hummingbird optimization algorithm are fused, and the metal particle inclusion degree is effectively reduced.

The invention discloses a metal particle Ni supported catalyst based on fly ash. The preparation method comprises the following steps: firstly, carrying out alkali fusion on fly ash to prepare powder; dissolving the powder and Ni (NO3) 2.6 H2O in a mixed solution of distilled water and absolute ethyl alcohol, adding polyethylene glycol, and performing ultrasonic stirring to obtain uniform dispersion liquid; and finally, continuously performing ultrasonic stirring on the dispersion liquid, performing hydrothermal reaction, cooling, performing centrifugal separation, drying, calcining, cooling and grinding to obtain the catalyst. The coal ash derivative zeolite is adopted as a carrier of the catalyst, Ni is loaded on the carrier to improve the specific surface and effective active sites of the carrier, the effective catalytic specific surface area of the catalyst is effectively improved, and the catalytic activity is improved, so that a stable and safe catalyst material for preparing methane through CO2 hydrogenation with high activity and selectivity is obtained; the space time yield of methane is high.

Composite materials with noble metal coated silver nanowires loaded into polymer are described. The composite materials may have resistivities of no more than about 100 Ohm-cm, or from about 100 Ohm-cm to about 1×1011 Ohm-cm depending on the amount of noble metal coated silver nanowires loaded into the polymer. The noble metal coated silver nanowires may be platinum coated silver nanowires. Metal particulates such as silver flakes or silver particles may be added to the composite materials in order to obtain desired properties. Composite precursor compositions and methods for preparing the composite materials are described.

The invention provides a negative electrode current collector and a preparation method and application thereof, and relates to the technical field of batteries. The negative electrode current collector provided by the invention comprises a metal net and slurry layers coated on two surfaces of the metal net, the slurry layer is mainly composed of a conductive carbon material, metal particles, a sodium-based fast ion conductor or a lithium-based fast ion conductor and a binder; the conductive carbon material is mainly composed of a point type carbon material, a linear carbon material and a surface type carbon material; and the porosity of the slurry layer is 30%-40%. The negative electrode current collector is low in cost, has a porous structure, has sufficient sodium metal or lithium metal deposition space, can enable sodium metal or lithium metal to grow in the negative electrode current collector when being used for a negative-electrode-free electrode, is small in volume change of a battery, and reduces the occurrence of sodium dendrites or lithium dendrites.

The invention discloses a powder metal particle removing system and method, and the method comprises the steps that powder is transferred into a preset container; mixing the powder materials in the container; putting the mixed powder into a sagger, and sintering to form a crystal structure; the sintered crystal structure is crushed and ground to the required particle size; and metal particles in the crushed particles are subjected to microwave oxidation. According to the scheme provided by the invention, after the powder is transferred into the preset container to be mixed, the powder is sintered in the sagger, then the sintered powder is ground, and finally the ground powder is subjected to microwave heating by utilizing the microwave oxidizer. After the microwave irradiates the powder, the metal particles contained in the powder can be quickly oxidized, the heating speed is high, the efficiency is high, the corresponding metal particles can be effectively removed, and the removal efficiency is high.

The invention discloses a conductive paste, a metallized substrate and a metallization process for manufacturing the metallized substrate, the conductive paste comprises metal particles, the particle size of the metal particles is 0.1-10 [mu] m, and the mass ratio of the metal particles is 80-98%; in the metallization process, a copper layer is arranged on the hole wall of a through hole or a blind hole of a substrate, then conductive slurry is filled in the hole with the copper layer, heating sintering treatment is carried out, and after heating sintering is carried out in an inert gas atmosphere at the temperature of less than or equal to 300 DEG C, metal particles can be fused to form a connection structure or a eutectic structure. A reinforcing layer can be formed between the nano metal particles and the copper layer, and the reinforcing layer is a metal bonding layer or an intermetallic compound layer. The metallization mode is suitable for a through hole or a blind hole of a glass / silicon / ceramic substrate with a high aspect ratio and a micro aperture, and the technical problems that complete filling is difficult to achieve and filling defects exist in an existing electroplating process, the electrical resistivity of conductive paste is high, and the interface bonding force is insufficient can be solved.

The invention discloses a solar cell and a photovoltaic module. The solar cell includes a semiconductor substrate having a first semiconductor layer on a first surface; the passivation layer at least covers one side, deviating from the semiconductor substrate, of the first semiconductor layer; a first seed layer electrically connected to the first semiconductor layer through the passivation layer; the first seed layer comprises a plurality of first metal particles and a plurality of second metal particles stacked on at least local surfaces of the first metal particles, the particle size of the first metal particles is a, the particle size of the second metal particles is b, and a-b is greater than or equal to 40nm and / or a is greater than or equal to 1.5 b. The surface roughness of the first seed layer can be increased, so that the specific surface area of the first seed layer is increased, more metal contact points exist between the first seed layer and the first grid line, more metal contact is formed, the contact resistance between the first seed layer and the first grid line is reduced, and the power generation efficiency of the battery is improved; meanwhile, the adhesive force of the first grid lines is improved, and the first grid lines can be prevented from falling off.

The invention relates to a liquid metal gel material, a preparation method thereof and a thermal interface material, and belongs to the field of thermal interface materials. Wherein the liquid metal gel material comprises a modified polyethylene film, and the modified polyethylene film comprises a polyethylene film and metal particles attached to at least part of the surface of the polyethylene film; the modified polyethylene film is at least partially filled with the liquid metal. The liquid metal gel material provided by the invention has the advantages of low thermal resistance, high thermal conductivity, excellent mechanical properties and high stability in a dynamic environment, and can meet the use requirements of high-end fields on thermal interface materials.

The invention relates to a powder metal particle detection method, device and system, and the method comprises the steps: uniformly mixing a conductive liquid with to-be-detected powder to obtain a mixed liquid; wherein an electrode part is arranged in the mixed liquid, and the temperature of the conductive liquid is greater than or equal to a preset electrolysis temperature; a preset electrolysis voltage is applied to the electrode component to form an electrolysis path, and the electrolysis path is used for electrolysis of metal particles in the to-be-detected powder; and detecting the charging current of the electrolysis path, and determining the information of the metal particles contained in the to-be-detected powder according to the charging current and the preset electrolysis voltage. According to the embodiment of the invention, the detection efficiency and detection reliability of the metal particles can be improved.

The present application relates to the field of materials, and more specifically, to a silicon negative electrode material, a battery negative electrode sheet, and a lithium-ion battery. The silicon negative electrode material comprises a nano-sheet silicon-based material and a carbon coating layer, with a metal layer or metal particles between the carbon coating layer and the silicon-based material. The surface of the silicon negative electrode material of the present application has a carbon coating layer, which can effectively prevent the direct contact between the nano-sheet silicon-based material and the electrolyte, and the SEI film formed on the coating layer is thin and stable. In addition, there is a metal layer or metal particles between the nano-sheet silicon-based material and the carbon coating layer, and the good electrical conductivity of the metal can compensate for the poor electrical conductivity of silicon.

The invention discloses a preparation method of a vibration and noise reduction bimetal composite pipe, relates to the field of metal pipe processing, and aims to solve the problem of poor vibration and noise reduction performance of a traditional composite pipe. The preparation method comprises the steps that a composite pipe blank is provided and sequentially comprises a titanium alloy pipe and a stainless steel pipe from outside to inside, the titanium alloy pipe and the stainless steel pipe are fixed through a base, and an annular columnar filling cavity is defined by the titanium alloy pipe, the stainless steel pipe and the base; the filling cavity is filled with metal particle materials, the metal particle materials are compacted through a pressing block, and the open end of the filling cavity is sealed and welded through a cover plate; hot rolling is conducted on the composite pipe blank, and a first composite pipe blank sequentially comprising a titanium alloy layer, a porous metal layer and a stainless steel layer from outside to inside is obtained; and cutting off the pipe section of the base and the cover plate to obtain the composite pipe. And the porous metal layer formed by the metal particle material has good energy absorption performance and excellent sound insulation and heat insulation performance, so that the prepared bimetal composite pipe finally achieves the purposes of vibration and noise reduction.

The invention discloses an impedance self-adaptive high-frequency probe, a probe card and a testing method, and belongs to the technical field of semiconductor high-frequency testing. When an existing high-frequency probe is used for a crimping test, a conductive probe body of the existing high-frequency probe generates mechanical deformation due to contact pressure, so that characteristic impedance is deviated, and uneven pressure in an array causes impedance dispersion. The problem is solved by coating the outer side of the conductive needle body with a composite material layer, the composite material layer is composed of an elastic insulating matrix and metal particles dispersed in the elastic insulating matrix, the metal particles have bimodal particle size distribution, and the total integral number is 30%-40%. When the probe is pressed, the composite material layer is subjected to reversible microscopic reconstruction, the effective dielectric constant of the composite material layer is increased along with the increase of the pressure, and the generated impedance change can counteract the impedance drop caused by the deformation of the conductive probe body, so that the self-adaptive stability of the characteristic impedance of the probe under the change of the pressure is realized. The impedance dispersion of the probe array can be remarkably reduced, the consistency and precision of high-frequency testing are improved, and the process compatibility is good.

The invention discloses a burning metal particle three-dimensional surface panoramic microscopic imaging measurement method. The method comprises the following steps: collecting a dynamic panoramic microscopic image of burning metal particles; the collected panoramic microscopic image is preprocessed, the combustion metal particles are cut out independently from the panoramic microscopic image, and a binary image of the combustion metal particles and a binary image of surface oxides of the combustion metal particles are obtained; modeling combustion metal particles by using a long ellipsoid geometric model to obtain a mapping relation between the three-dimensional surface of the combustion metal particles and the two-dimensional information of the collected panoramic microscopic image; and calculating the three-dimensional surface areas of the combustion metal particles and the surface oxides thereof according to the binary image of the combustion metal particles, the binary image of the surface oxides thereof and the mapping relation. According to the measurement method, the three-dimensional surface reconstruction of the combustion metal particles can be realized, the areas of the combustion metal particles and oxides thereof can be quantitatively obtained, and the dynamic process of oxide fragments on the surfaces of the combustion metal particles can be visualized.

Provided are methods, systems, and computer program products for lane keep tracking and / or localization of a vehicle using a radar to detect metallic particles in paint applied to lane markings or curb markings. An example method may include: causing a radar system of a vehicle to output radio waves; receiving a radar image from the radar system corresponding to returned radio waves; determining a portion of the radar image includes lane or curb markings, wherein the lane or curb markings are embedded with metallic particles; and determining a location of the vehicle based at least in part on the determined portion of the radar image that includes the lane or curb markings.

The present invention belongs to the technical field of magnetic materials, and particularly relates to a high-frequency magnetic composite material, a high-frequency magnetic device and a processing method thereof. Among them, the processing method of the high-frequency magnetic composite material includes: mixing magnetic metal particles with a magnetic vortex structure, a solvent and a non-magnetic ceramic phase material and grinding them into a slurry; placing the slurry in a mold and forming it under a low-temperature and low-pressure process; wherein, the conditions of the low-temperature and low-pressure process are that the temperature is lower than 300 °C and the pressure is less than 500 MPa. By using magnetic particles with a magnetic vortex structure, there are no magnetic domain walls in the present invention. At high frequencies, magnetization mainly occurs through magnetization rotation, rather than the traditional domain wall displacement mechanism, which can significantly increase the working frequency of the material to above 100 MHz; in addition, the low-temperature and low-pressure process is adopted to avoid various defects of extreme conditions such as high temperature and high pressure in the traditional process.

The invention belongs to the technical field of metal material machining, and particularly relates to an ultrahigh-hardness material inner hole machining jig which comprises a rack and a first air cylinder arranged at the top of the rack, a first motor and a polishing rod are arranged at the moving end of the first air cylinder, and the polishing rod is fixedly arranged at the output end of the first motor. The workbench is fixedly arranged at the bottom of the rack, and a stretching hole is formed in the center of the upper surface of the workbench; and two second cylinders. The cutting edge of the cutter is protected through the cutting edge protection mechanism and the metal particle magnetic attraction mechanism, and scratches caused by chippings and metal particles are prevented; the clamping force is accurately controlled through the clamping force detection mechanism, the cutter is prevented from being damaged, and in the grinding process, the cutter is prevented from being damaged due to too large extrusion force; meanwhile, the automatic measuring and feeding mechanism can automatically measure the moving distance of the grinding rod, and operation is convenient; the machining quality and efficiency are integrally improved, and the machining precision and the later use performance of the tool are guaranteed.

The embodiment of the invention provides deposition equipment and a preparation process for preparing quartz glass base metal, and relates to the technical field of quartz glass preparation.The deposition equipment for preparing the quartz glass base metal comprises an equipment main body, the equipment main body is internally provided with a cavity, and the equipment main body is used for depositing a loose body in the cavity; and the first adsorption part is arranged on the equipment main body, and the first adsorption part is used for absorbing the metal particles in the cavity. According to the deposition equipment for preparing the quartz glass base material and the preparation process, the problems that in the prior art, the structural defects of the quartz glass base material are difficult to reduce, and the purity is difficult to improve are solved.

The invention discloses a test method for exploring the inhibition effect of a coating on GIL metal particles, and relates to the technical field of high-voltage transmission lines and insulation, the test is carried out in a GIL test platform, and the test method comprises the following steps: S1, selecting a coating material; s2, determining a film covering position; s3, selecting proper particles; s4, determining a particle placement position; s5, carrying out a pressurization test; and S6, observing the motion state of the particles under high voltage, recording the take-off voltage, the stop voltage and the distribution range of the particles, and analyzing the effect of the film on inhibiting the take-off of the particles. According to the test method for exploring the inhibition effect of the covering film on the GIL metal particles, the inhibition effect of the covering film on the metal particles in different shapes is observed and compared through tests, and a basis is provided for practical application of the covering film.

This invention relates to a defect-laden porous carbon support for a stable iron-based diatomic catalyst, its preparation method, and its application in air batteries, belonging to the field of catalyst preparation technology. The preparation method involves the following steps: ZIF-8 is subjected to high-temperature heat treatment under a nitrogen atmosphere, followed by rapid cooling under a liquid nitrogen atmosphere; then mixed with an iron metal source, and ethanol is added for defect backfilling. After stirring and drying, a second heating is performed to obtain the catalyst. This method can firmly and precisely anchor two metal atoms onto the carbon support, ensuring the formation of stable diatomic sites and their full exposure. This ensures that the active sites are in full contact with the substrate to exert their efficient catalytic effect, avoiding particle agglomeration that could lead to clusters or metal particle formation, causing some sites to be encapsulated and hindering their high activity. This method can be effectively applied in air batteries.

The invention discloses an advanced wastewater treatment device which comprises an electrolytic bath, a hollow titanium basket electrode arranged in the electrolytic bath, and a power supply electrically connected with the hollow titanium basket electrode, the device comprises at least one pair of hollow titanium basket electrodes, the hollow titanium basket electrodes are filled with metal particles, the bottom of each hollow titanium basket electrode is provided with an aeration device, and the metal particles in the hollow titanium basket electrodes move and collide under the action of bubbles generated by the aeration device in the hollow titanium basket electrodes of the device, so that the depassivation effect can be achieved; meanwhile, electrolyte mass transfer and exchange are achieved through convex holes in the surface of the hollow titanium basket electrode, electrolytic reaction ion migration is achieved, and the device is simple in structure, easy to operate, convenient to add electrode materials, capable of improving the electric flocculation efficiency, low in cost and high in treatment capacity.

The invention discloses a coating method and a coating device for coating superfine powder. The coating method comprises the following steps: S1, conveying original powder into gas-powder mixing equipment through a mixing pipeline; s2, a feeding unit in the gas-powder mixing equipment is started, meanwhile, an electric arc heating device is started, and the to-be-coated metal material is instantly melted through the high temperature of an electric arc; s3, the molten metal material to be coated forms atomized mixed liquid in gas-powder mixing equipment, and the atomized mixed liquid is conveyed into a collecting unit through spray holes; and S4, in a collecting unit, enabling the metal particles to be coated in the atomized mixed liquid to form a coated powder air mass, forming a coating or powder through deposition, and finally cooling and separating to obtain the coated ultrafine powder material. By adopting the coating method and the coating device, different types of metal materials or ceramic powder can be prepared, and the prepared coated ultrafine powder particles are controllable in particle size and high in purity, so that the application range of the ultrafine powder can be expanded.

The utility model discloses a high-pressure flushing device which is used for extracting metal particles in a lithium ion battery material and comprises a tank body, a first opening is formed in the upper side of the tank body and used for allowing flushing fluid to enter, and a second opening is formed in the lower side of the tank body and used for allowing the flushing fluid to flow out; the cover body is connected with the upper side of the tank body in an openable and closable mode, the cover body is provided with a flushing device, the flushing device comprises a liquid inlet pipe and a flushing pipe which are communicated, the liquid inlet pipe is used for being externally connected with flushing liquid, the flushing pipe is rotatably connected with the cover body, and when the cover body is closed, the flushing pipe is located above the installation position; and the screen mesh is detachably arranged in the tank body. The high-pressure flushing device can extract all magnetic metal, weakly magnetic metal and non-magnetic metal impurities with the size larger than or equal to 25 microns.

The invention relates to a secondary battery, a preparation method thereof and an electric device. The secondary battery comprises a negative electrode plate, the negative electrode plate comprises a negative electrode current collector and a negative electrode active layer laminated with at least one surface of the negative electrode current collector, the negative electrode active layer comprises a negative electrode active material and metal particles, and at least part of the metal particles have a porous structure; metal elements in the metal particles comprise at least one of IVA group metal elements and VA group metal elements. According to the embodiment of the invention, the metal particles are added into the negative electrode plate, the porous structures on the surfaces of the metal particles are relatively stable and not easy to collapse, stable transmission of active metal lithium ions can be facilitated, and meanwhile, the negative electrode plate is not easy to expand in volume in the cyclic charge-discharge process, so that the cycle performance of the battery is improved, and the service life of the battery is prolonged.

The invention relates to metal powder gas atomization manufacturing equipment and method capable of inhibiting satellite powder, the metal powder gas atomization manufacturing equipment comprises a metal smelting system, an atomization cavity and an atomization gas injection system, and the atomization gas injection system is used for atomizing molten metal in the atomization cavity and forming an atomization cone; the device further comprises an energizing electrode, an attraction electrode and a material suction device, one of the energizing electrode and the attraction electrode is connected with positive electricity, the other one of the energizing electrode and the attraction electrode is connected with negative electricity, and the energizing electrode is arranged on a path before molten metal generated by the metal smelting system enters the atomization cavity and used for adding charges to the molten metal and used for adding charges to the molten metal falling from the metal bar. The attraction electrode is arranged in the atomization cavity, located around the atomization cone and used for attracting the charged metal particles; the material suction device comprises a powder suction opening formed in the periphery of the atomization cone and a suction mechanism used for enabling the powder suction opening to generate negative pressure suction force.

To provide activated carbon capable of suppressing the occurrence of internal short circuits. [Solution] Powdered activated carbon, in which the number of metal particles having a short side length of 45 μm or more among the metal particles remaining on a sieve obtained by sieving the powdered activated carbon using a sieve with a mesh size of 32 μm conforming to JIS Z 8801 is 30% or less of the total number of metal particles remaining on the sieve.

The present invention relates to a precursor for the production of an alloy used as a catalyst. The precursor comprises a metallic substrate, a layered structure comprising binders, metallic particles, and at least one metal oxide, metal phosphide, and / or metal sulfide, wherein the layered structure is arranged on the metallic substrate.

The invention relates to the field of nano science and nano technology, in particular to a low-power particle capture and local thermal detection method and device based on tip-enhanced Raman optical tweezers, under laser irradiation, directional optical force is generated through an enhanced electric field between a nano tip and metal particles, and capture of the metal particles is achieved; raman scattering on the surface of the needle tip can be excited through focused laser, and the local temperature of the needle tip can be obtained by analyzing the change of a Raman characteristic peak. According to the method, directional optical force is generated through an enhanced electric field between the needle tip and the metal particles to capture the metal particles, the problem that the metal particles cannot be captured by single-beam 532 nm laser is solved, the power density of captured particles is reduced, and the adverse effect of the heat effect on capture is reduced. The method also can amplify the Raman signal of the needle tip to realize Raman detection of a local position, realizes temperature monitoring at the capture position, and lays a foundation for exploring the influence of the thermal effect on the capture process.

A box body, a battery, and an electrical device, the box body comprising a main box body and a separator. Through holes are formed on the main box body, and the separator is arranged in the main box body and blocks the through holes. The separator is configured to be melted through when thermal runaway occurs in a battery cell. In the embodiments of the present application, the separator can block the through holes, such that the inside and outside of the main box body are not in communication, and impurities such as metal particles outside of the main box body cannot enter the main box body from the through holes, thereby reducing the probability of insulation failure caused by metal particles outside of the main box body entering the main box body.

Photovoltaic device comprising: - a silicon-based substrate (1); - a tunneling layer (2) provided upon said silicon-based substrate (1); - a passivating layer (3) provided upon said tunneling layer (2); - an electrical contact structure (12, 5, 9) situated upon said passivating layer (3); - a dielectric layer (4) provided upon said passivating layer (3); According to the invention, said electrical contact structure (12, 5, 9) comprises: - a patterned metal seed layer (12) provided upon said passivating layer (3) and defining seeded zones (14); - a metal particle paste (5) provided exclusively upon said patterned metal seed layer (12) in said seeded zones (14), said dielectric layer (4) extending over said metal particle paste (5) discontinuously; and - a metallic plating layer (9) provided upon said dielectric layer (4) in said seeded zones (14) and in electrical connection with said metal particle paste (5).