26results about How to "Improve deposition efficiency" patented technology

This invention discloses a method for preparing and applying a current collector for a negative electrode-free sodium metal battery modified with monodisperse metal sites. The current collector substrate is placed in the reaction chamber of an atomic layer deposition (ALD) apparatus. A metal source and co-reactants are introduced through alternating feeding to generate monodisperse metal atoms, ultimately producing a negative electrode-free sodium metal current collector. By constructing uniform, high-density monodisperse metal atoms on the surface of the current collector substrate, the active sites of the metal atoms are densely and uniformly distributed. This guides sodium metal to deposit and peel off in a dense, flat layered morphology, effectively suppressing sodium dendrite formation and reducing the generation of dead sodium during cycling. This significantly improves the coulombic efficiency of the negative electrode-free sodium metal battery. When applied to a negative electrode-free sodium metal battery, the battery can achieve stable long-cycle operation in the initial state of a completely sodium-free negative electrode, effectively improving battery cycle stability and coulombic efficiency, and significantly extending battery life.

The invention relates to the field of high-temperature protective ceramic coatings for aero-engines, and particularly discloses an environmental barrier coating with a gradient structure and a long service life and a suspension plasma spraying preparation method thereof. The specific method comprises the following steps: by taking silicon powder as a raw material, preparing a bonding layer on a silicon carbide ceramic or SiCf / SiC ceramic-based composite material by utilizing an axial powder feeding three-electrode atmosphere plasma spraying system, preparing suspension liquid by taking rare earth silicate RE2Si2O7 and the like as raw materials, and respectively spraying a compact structure RE2Si2O7 middle layer and a columnar crystal-like structure RE2Si2O7 surface layer; and the prepared state coating is placed in Ar atmosphere and subjected to high-temperature annealing treatment, and the environment barrier coating with the high crystallinity and the gradient structure is obtained. The coating prepared by the invention has gradient transition structural characteristics, has excellent thermal shock resistance in actual tests, and has important application significance in prolonging the service life of silicon carbide ceramic or SiCf / SiC ceramic-based composite materials.

A kind of diamond chemical vapor deposition device, including vacuum reaction chamber, the upper portion of the vacuum reaction chamber is provided with distribution platform, the top left side of the distribution platform is connected with hydrogen pipeline, the top right side of the distribution platform is connected with carbon-containing pipeline, the lower portion of the distribution platform is provided with microwave plasma, the lower portion of the microwave plasma is provided with substrate table, the upper portion of the substrate table is provided with molybdenum support, diamond seed is placed on the molybdenum support, the bottom of the substrate table is provided with cooling assembly, the right side of the vacuum reaction chamber is provided with negative pressure fan.The utility model can better solve the problems in the prior art, create better economic benefits.

The invention discloses a heterojunction battery and a preparation method thereof. The preparation method comprises the steps of preparing the semiconductor substrate layer; preparing intrinsic amorphous silicon layers on two opposite surfaces of the semiconductor substrate layer respectively; depositing a doping layer on the intrinsic amorphous silicon layer; and manufacturing a transparent conductive layer on the doped layer. The preparation of the doping layer on the intrinsic amorphous silicon layer comprises the following steps: depositing a collection layer on at least one intrinsic amorphous silicon layer; a microcrystalline silicon layer is deposited on the collection layer, and carrier gas used in the process of depositing the microcrystalline silicon layer comprises argon. In this way, the deposition efficiency of the microcrystalline silicon layer and the photoelectric conversion efficiency of the heterojunction cell can be improved.

The application discloses a silicate cement admixture and a preparation method thereof, and belongs to the technical field of recycled concrete. The silicate cement admixture is prepared by using self-synthesized modified coal gangue nanosheets, copper-calcium nanoneedle composite modified scales and a modified binder as part of fillers. The modified binder can significantly increase the interfacial bonding force of the silicate cement admixture, the cement matrix and the recycled aggregate. The modified coal gangue nanosheets and the copper-calcium nanoneedle composite modified scales, which are both reinforcing phases, can give the silicate cement admixture sufficient mechanical strength. The two kinds of materials are both in a sheet structure, and the stress can be dispersed by mutual sliding of the two kinds of materials, so that stress concentration points are avoided at the interface. The copper-calcium nanoneedle composite modified scales can increase the contact area with other materials through a mechanical interlocking effect, and the existence of the nanoneedle structure allows a gap between the copper-calcium nanoneedle composite modified scales and other materials, so that the porosity and the water permeability are increased.

The invention provides an atomizer system based on inspiration airflow sensing adjustment and an adjustment method, and relates to the technical field of medical instruments, and the atomizer system comprises an atomizer body, an airflow sensing module, a control module, an atomization output adjustment module and a voice broadcast module. The airflow sensing module is used for sensing inspiration airflow and converting the inspiration airflow into electric signals. The control module and the airflow sensing module are used for receiving the electric signals and sending control instructions. When the inspiration airflow intensity corresponding to the electric signal is lower than a preset threshold value, a reminding instruction is sent, the atomization output adjusting module is used for adjusting the atomization output quantity of the atomizer body according to a control instruction, and the voice broadcast module is used for receiving the reminding instruction and outputting electronic voice prompt information. Atomization output is matched with the inspiration state in real time, medicine loss is effectively reduced, and the medicine utilization rate is increased; by establishing mathematical models for different nebulizer types and combining breathing parameter correction, individualized accurate adjustment is achieved, and the treatment effect is improved.

This invention discloses an isostatic pressing graphite tantalum carbide coating deposition apparatus for epitaxial substrates, specifically relating to the technical field of coating deposition equipment. It includes a support base, with a convergence deposition assembly mounted on top of the base. The convergence deposition assembly includes a connecting plate for support, which is located on top of the base. Through the corresponding cooperation of various structures, the two first heating plates are brought close together to initially limit the material, preventing displacement during subsequent coating deposition. The material can converge between the first and second heating plates, ensuring that the coating is concentrated between the first and second heating plates and the material during deposition, improving deposition efficiency. Furthermore, the trapezoidal cross-section formed by the combination of the second and first guide plates continuously causes the coating to converge downwards, resulting in a higher density.

This utility model discloses a vacuum coating apparatus, comprising: a vacuum system including a vacuum chamber; a winding system disposed in the vacuum chamber for conveying a base film, comprising at least two cooling rollers arranged along a first horizontal direction, with an installation gap formed between adjacent cooling rollers; an evaporation source system disposed in the vacuum chamber, comprising evaporation sources located below the cooling rollers and corresponding to each cooling roller; and at least one baffle mechanism disposed in the installation gaps, corresponding to each installation gap, to prevent vapor crosstalk between adjacent evaporation sources; wherein the bottom height of the baffle mechanism is not higher than the top height of the evaporation source, and the top height of the baffle mechanism is not lower than the bottom height of the cooling rollers. This utility model, employing the above structure, can avoid mutual interference of vapors at adjacent cooling rollers, improving coating quality and subsequent cleaning of the vacuum chamber.

The invention provides composite precise repairing equipment for a metal component, and relates to the field of metal component repairing. The composite precise repairing equipment for the metal component comprises a base tool used for being installed on a machining center workbench, and further comprises a displacement clamp, an X-axis, Y-axis and Z-axis assembly, a laser-arc composite assembly and a coaxial powder blowing assembly, and the displacement clamp is installed on the base tool and used for achieving swinging and rotating of a workpiece; the XYZ-axis assembly is installed on the base tool, and the laser arc composite assembly is installed on the XYZ-axis assembly and used for moving along the X axis, the Y axis and the Z axis. According to the composite precise repairing equipment for the metal component, the machining freedom degree can be freely switched even in the face of cavitation and recesses in complex shapes, when a thin-wall workpiece is repaired, excessive profiles do not need to be cut off through a traditional tool, the laser arc composite assembly and the laser arc composite assembly are combined, high efficiency and high quality are achieved, and layer-by-layer stacking machining is achieved; and the original profile performance can be better recovered.

The application discloses a method for electron beam fuse additive manufacturing of beta titanium alloy components, and belongs to the technical field of additive manufacturing. The application aims to solve the problems of long preparation period, low efficiency, low utilization rate, serious oxidation, significant beta spot and poor strength and toughness of the prior art. The method comprises the following steps: pretreating the printing wire and the substrate; establishing a three-dimensional entity model based on the target beta titanium alloy component, performing slice processing on the three-dimensional entity model to generate multi-layer two-dimensional slice data, and then importing the slice data into an electron beam fuse additive manufacturing equipment, and setting a scanning path, preheating parameters and printing process parameters; starting the equipment and performing vacuumization, printing the beta titanium alloy according to the set printing parameters and procedures, completing all layers, and obtaining the beta titanium alloy component. The beta titanium alloy component prepared by the application has high density, and provides a reliable technical approach for the preparation of high-performance beta titanium alloy components in the fields of aviation and aerospace.

The present application provides a sunlight-resistant colored electrochemical energy storage fabric based on recycled cotton powder and a preparation method thereof, belonging to the technical fields of flexible electronic textiles and electrochemical energy storage. The preparation method first deposits a TiO2 film on the recycled cotton powder by ALD technology, and then performs mild hydrothermal synthesis to obtain a TMOs@TiO2@CP composite powder with a three-layer nested structure. Among them, the TiO2 film protects the internal recycled cotton powder from erosion during the hydrothermal reaction and is tightly combined with the TMOs functional layer through Ti-O-TM covalent bonds, improving the structural stability and interfacial bonding force of the composite powder. The present application uses the inherent color characteristics of different transition metal oxides to replace traditional black carbon-based materials, endowing the energy storage fabric with rich color choices and meeting the aesthetic and design requirements of high-end textiles. The process route of the present application avoids the damage to the inherent flexibility and structure of cotton fabrics by drastic means such as high-temperature carbonization.

The utility model belongs to the field of chemical vapor deposition, and particularly relates to a vapor deposition furnace with a gas supplementing function. Comprising a furnace body, an air inlet structure, an air supplementing structure and an air outlet pipe, a deposition chamber is arranged in the furnace body, the upper part of the furnace body is fixedly connected with a gas inlet structure, and the gas inlet structure comprises a gas inlet mixing chamber, a gas inlet pipe and a gas distribution pipe; the upper portion of the air inlet structure is fixedly connected with the air supplementing structure which comprises an air supplementing and mixing chamber, an air supplementing and inlet pipe and a workpiece outer side air supplementing pipe. The gas outlet pipe is arranged at the lower part of the side wall of the furnace body and is communicated with the deposition chamber. According to the air supply device provided by the utility model, through the arrangement of the air supply pipe on the outer side of the workpiece, on one hand, the deposition quality of a coating on the surface of the workpiece to be deposited can be improved, and on the other hand, the deposition quality of the coating on the inner wall surface of the workpiece to be deposited can be ensured.

The application discloses a special feed for fattening pigs rich in functional amino acids, which comprises the following components in parts by weight: a core functional amino acid composition 3-5 parts, a low-soybean meal multi-protein matrix 60-70 parts, a nutrition synergistic component 20-25 parts, an anti-nutritional factor degradation agent 1-2 parts, and a micro-ecological and plant extract component 1-2 parts. A preparation method comprises the following steps: obtaining the low-soybean meal multi-protein matrix by pretreating raw materials; preparing the core functional amino acid microcapsule; mixing the basic materials and then performing low-temperature section granulation; after cooling, mixing the micro-ecological and plant extract component at low temperature; and finally screening and removing impurities and unqualified particles to obtain the finished product. The application optimizes the amino acid ratio and the preparation process, protects the activity of the amino acids, adapts to different growth stages of the fattening pigs, improves the growth performance and carcass quality, improves the raw material digestion rate, reduces nitrogen emission, and has strong applicability.

The invention discloses a friction deposition forming manufacturing method for an aluminum alloy aircraft hub, which comprises the following steps: establishing a three-dimensional model of the aircraft hub, depositing an aluminum alloy metal bar on a substrate according to a preset deposition path by adopting a friction deposition forming method according to the three-dimensional model of the aircraft hub to obtain an aircraft hub forging stock, the aircraft hub forging stock is subjected to finish forging and air cooling to the room temperature, a forging stock is obtained, the forging stock is subjected to heat treatment, and the aluminum alloy aircraft hub is obtained.The defects that in traditional forging production of the aircraft hub, the structure is uneven, and grains are coarse are effectively overcome, and the tensile strength, the ductility and other performance of the aluminum alloy aircraft hub are improved.

This invention discloses a process for manufacturing an impact-resistant and wear-resistant ultra-hard metal-based composite layer and a straightening roller, comprising an alloy groove coating layer one, an alloy groove coating layer two, and an alloy working layer; both alloy groove coating layer one and alloy groove coating layer two have sinusoidal structures, are staggered, and have at least one set of intersection nodes between them, and are located inside the alloy working layer. By introducing V and Nb into the original formulation and precisely adjusting the proportions of components such as Co, Ni, Cr, C, B, and Si to meet the requirements, the composite layer retains high hardness and good oxidation resistance, impact resistance, thermal shock resistance, and corrosion resistance at high temperatures, improving the spraying process performance of the alloy coating and increasing the deposition rate.

The application discloses a flow guide device of a chemical vapor deposition furnace, which comprises an Archimedes spiral flow guide cone and a cross flow guide support, the Archimedes spiral flow guide cone comprises a cone body and an Archimedes spiral, the Archimedes spiral is distributed on a conical surface of the cone body to form a flow guide groove, the cross flow guide support comprises a perforated base and a flow guide rod, the Archimedes spiral flow guide cone is inserted on the perforated base, and the perforated base is communicated with the flow guide rod. The application adopts the combined mode of the Archimedes spiral flow guide and the cross flow guide support, improves the deposition uniformity compared with other molds, ensures uniform mixing of multiple gases and controls uniform distribution of a gas flow field along a radial direction, and improves the deposition efficiency.

The invention provides a ceramic matrix composite 2D unequal-wall-thickness flanged component preform and a preparation method thereof, which are used for solving the technical problem that the structural rigidity and the safety performance of the ceramic matrix composite 2D flanged component are greatly reduced due to the fact that an existing ceramic matrix composite 2D flanged component and a preform thereof are designed to be of an equal-wall-thickness structure. According to the preparation method of the ceramic matrix composite 2D unequal-wall-thickness flanging type component preform, the inner equidistant lines and the outer equidistant lines are designed to form the similar triangular area, and then the multiple inner arc lines with the same radian as the inner equidistant lines and the multiple outer arc lines with the same radian as the outer equidistant lines are designed in the similar triangular area; according to the manufacturing method, the effectiveness of continuous fibers in the part range is effectively guaranteed while the prefabricated body of the 2D unequal-wall-thickness flanged component is manufactured, the mechanical property of the component is improved, the component has high strength and rigidity, the risks of wrinkling and deformation are avoided, and a guiding scheme is provided for manufacturing of components of the same type.

The application discloses an Hf-Ta-Si / (Hf,Zr)B2 layered composite ultrahigh-temperature protective coating which is composed of a TaSi2 bottom layer, a ceramic layer surface layer with (Hf,Zr)B2 ultrahigh-temperature ceramic as a main phase and a Ta5Si3 interface reaction layer located at the interface between the substrate and the TaSi2 bottom layer, and the interface between each layer is an in-situ reaction autogenous interface; the coating is obtained by prepositioning the slurry of raw material powder on the surface of a tantalum alloy, drying, and then vacuum reaction sintering in one step; the coating has excellent ultrahigh-temperature oxidation resistance, heat scouring resistance and thermal shock resistance, and can effectively protect the tantalum alloy material under the conditions of oxygen, heat scouring and strong thermal shock at 1000 DEG C to 1800 DEG C; the method can reduce the adverse effects of the melting and sintering process on the microstructure and mechanical properties of the tantalum alloy, avoid the problem of preparing the ultrahigh-temperature ceramic coating on the surface of a tantalum alloy with a complex shape, and has higher coating deposition efficiency and lower cost.

The present invention relates to a release film for lithium transfer and a method for manufacturing the same, and more particularly, to a release film for transferring lithium (Li) to a battery current collector after depositing the lithium (Li) on the release film. The present invention relates to a release film for lithium transfer and a method for manufacturing the same, and more particularly, to a release film for lithium transfer and a method for manufacturing the same, which not only have excellent deposition efficiency, but also have excellent efficiency of transferring lithium deposited on a release film to a current collector by minimizing the generation of pin holes when depositing lithium (Li) on the release film.

The utility model discloses a fluid-magnetic-solid coupling-based cold spraying elbow nozzle and spraying equipment, the fluid-magnetic-solid coupling-based cold spraying elbow nozzle comprises a pipe body and a coil assembly, the pipe body comprises a convergent part, a throat part, an expansion part, a bending part and an extension part, one end of the convergent part far away from the throat part is provided with an opening, and the other end of the convergent part far away from the throat part is provided with an opening. The two opposite ends of the bending part are communicated with the expansion part and the extension part respectively, an outlet is formed in the end, away from the bending part, of the extension part, the bending part is bent, the coil assembly comprises a support and a coil part arranged on the support, the coil part covers part of the bending part and part of the extension part, and the coil part is used for generating a non-uniform magnetic field; spraying particles can be dynamically guided under the action of magnetophoresis force, path deviation caused by inertia is compensated, the directionality and deposition efficiency of the spraying particles are remarkably improved, the problem that a coating is not uniform is solved, the spraying particles are concentrated in the center of a flow channel through magnetic field regulation and control, the collision frequency of the spraying particles and a bent part is reduced, and the service life of the nozzle is prolonged.

The application provides a triangular silicon core with stable structure, which comprises a silicon core body arranged in axial extension, the silicon core body comprises a working section in the middle, a top cone section arranged at the upper end of the working section, a tail cone section arranged at the lower end of the working section, and transition sections respectively connected between the working section and the top cone section and between the working section and the tail cone section, the working section is in triangular prism structure, and the cross section of the working section is triangular, the top cone section and the tail cone section are gradually contracted in the direction away from the working section for mounting and positioning of the triangular silicon core, and the transition sections are used for gently connecting the working section with the top cone section and the tail cone section, and the application solves the problems of the prior art in silicon material utilization rate, forming speed in the initial deposition stage, stress state in the middle and late stages and crack control.

The invention provides a negative current collector, a preparation method thereof and a sodium ion battery. The negative electrode current collector comprises a base material and a conductive layer arranged on at least one side surface of the base material, the conductive layer comprises a conductive agent, nano metal and a binder; wherein the nano metal is a sodium-philic nano metal. According to the invention, the sodium-philic nano metal is added into the conductive layer, so that the number of sodium ion deposition sites can be increased, and therefore, in the cycle process of the battery, sodium ions are separated from a positive electrode and then directly deposited on a negative electrode current collector to form a negative electrode, and the efficiency, uniformity and stability of sodium ion deposition are improved. Meanwhile, the conductivity of the conductive layer can be improved by adding the sodium-philic nano metal, so that the internal resistance of the base material is greatly reduced, the electrochemical performance of the sodium-ion battery is improved, and the service life of the sodium-ion battery is prolonged. In conclusion, the negative current collector provided by the invention can improve the uniformity and stability of sodium ion deposition, thereby improving the electrochemical performance, cycle life and safety performance of the battery.

The utility model discloses a kind of shower head height direction stepless adjustment mechanism for thin film deposition equipment, it is related to the technical field for thin film deposition equipment, the utility model aims at solving how to adjust the problem of shower head in not opening cavity, the utility model includes vacuum cavity and shower head, the shower head is installed in the inside top of vacuum cavity, insulating ceramic is sleeved on the outer wall of the shower head, annular protrusion is arranged on the inner wall top of the insulating ceramic, the outer wall top of the shower head is formed into the boss that can be clamped below annular protrusion. Shower head height direction can be adjusted within a certain range, by adjusting, an optimal height can be determined, so that plasma field density increases, thin film uniformity is better, improves thin film deposition efficiency and film formation cleanliness, by directly adjusting shower head height outside cavity, reduce opening cavity process, can make maintenance time shorten, improve equipment open rate, cavity particle pollution caused by opening cavity is also reduced simultaneously.

The application discloses a kind of semiconductor production processing equipment, belongs to the field of semiconductor processing.A kind of semiconductor production processing equipment, including feeding box, further comprising: feeding port, symmetrically set up in the side wall of feeding box, the side of feeding box close to feeding port is provided with sealing mechanism, for sealing feeding box;Limiting rail, fixedly connected in the inside of feeding box, the inside of limiting rail is slidably connected with drive motor, the output end of drive motor is fixedly connected with reciprocating screw rod, the end of reciprocating screw rod away from drive motor is fixedly connected with rotating shaft, wherein, reciprocating screw rod is provided with movable disc, movable disc is fixedly connected with multiple groups of pneumatic components between drive motor, when reciprocating screw rod rotates, drive movable disc reciprocating movement along reciprocating screw rod, intermittently compresses pneumatic component;The application can overcome the problem of low semiconductor deposition efficiency, poor deposition quality.

The invention relates to a vapor deposition device for a lithium battery silicon-carbon composite material and a preparation method, the vapor deposition device comprises a supporting assembly, a heating assembly and a deposition assembly, the supporting assembly comprises a bottom box, a case and a top box; the heating assembly comprises a lower shell, an upper shell, heat preservation pieces and heating pieces, and the heat preservation pieces and the heating pieces are installed on the upper shell and the lower shell correspondingly. The deposition assembly comprises a storage tank, a feeding pipe, a discharging pipe, a filtering part, a material turning plate and an air extracting pump, the storage tank is rotationally connected to the lower shell, the feeding pipe communicates with one end of the storage tank, the filtering part is detachably installed at the end, away from the feeding pipe, of the storage tank, the discharging pipe is installed on the filtering part, and the discharging pipe exhausts gas; the turning plate is mounted on the inner wall of the storage tank; and one end of the sucking pump is communicated with the discharging pipe. According to the device, constant negative pressure is kept through the storage tank, the storage tank rotates, porous carbon flies under the action of the material turning plate, silicon-containing gas fully permeates into holes of the porous carbon, deposition is uniform, and the deposition quality and efficiency are improved.

The invention relates to the technical field of electro-deposited aluminum, in particular to a preparation method of electro-deposited aluminum based on a reverse pulse deposition technology, which comprises the following steps: step 1, mixing anhydrous aluminum bromide and xylene, and stirring under the protection of inert gas until the mixture is dissolved to obtain a non-aqueous electrolyte solution; step 2, adding polyethylene glycol into the non-aqueous electrolyte solution, and stirring until the polyethylene glycol is uniformly dispersed to obtain a non-aqueous electrolyte solution containing the polyethylene glycol; 3, putting the cathode substrate into a non-aqueous electrolyte solution containing polyethylene glycol, and carrying out aluminum electro-deposition by adopting pulse reverse current; and 4, after the electro-deposition is finished, taking out the cathode substrate, cooling under the protection of inert gas, carrying out ultrasonic cleaning with absolute ethyl alcohol, and carrying out vacuum drying to obtain the aluminum deposition layer. The aluminum deposition layer prepared by the method has the advantages of grain refinement, smooth surface, compactness and uniformity.