51 results about "Thin layer" patented technology

The application provides a method for stabilizing a powder bed laser melting process, belonging to the technical field of additive manufacturing, comprising determining input energy of a single laser scanning; determining a particle size distribution of a powder bed; determining median particle sizes of powders of each particle size layer of the powder bed according to the particle size distribution of the powder bed; preparing required powders of each level according to the particle size distribution of the powder bed and the median particle sizes of the powders of each particle size layer; and layer by layer laying the powders of each layer on a forming substrate of a laser powder bed melting device according to the particle size distribution and the median particle sizes of the powders of each layer to build the powder bed. The application solves the problems of laser energy transmission attenuation and uneven heat accumulation under the condition of large layer thickness. The high-efficiency forming and high-quality forming are realized under the condition of large layer thickness, the high precision and excellent performance possessed by traditional thin layer printing are obtained while the high printing efficiency is maintained, and a feasible path is provided for the large-scale application of the laser powder bed melting technology in the manufacturing of large and complex metal components.

This invention applies selective laser cladding (SLS) technology to the fabrication of reducer pin tooth housings, designing a lightweight, high-strength pin tooth housing with both material and structural gradients. In terms of materials, a gradient material layer-by-layer printing process is employed, with the outer layer using high-strength alloy steel as the base layer, the middle layer using GCr15 bearing steel powder, and the inner gear surface coated with a thin layer of AlCoCrFeNi high-entropy alloy powder. A certain proportion of transition zone material is incorporated between each layer to enhance the wear resistance and contact fatigue strength of the pin tooth housing. Structurally, a certain structural gradient is used, with a three-layer structure designed using UG 3D modeling software. The top and bottom layers are solid and gapless, while the middle layer uses a negative Poisson's ratio hollow structure, significantly reducing the weight of the pin tooth housing and achieving lightweight design. This dual-gradient design allows the reducer to maintain better overall mechanical performance while achieving a lightweight design.

This invention proposes a method for preparing a multi-curved bulletproof plate, comprising the following steps: S1, mixing diamond, phenolic resin, silicon powder, graphite powder, boron carbide, and silicon carbide in a mixer to obtain a mixture; S2, pressing the mixture into a sample; S3, silicon infiltration firing: modifying and pretreating the silicon particles used for silicon infiltration firing, then performing silicon infiltration firing on the sample, and separating the sample and silicon particles with an alumina plate during silicon infiltration firing. This invention pre-treats silicon particles, causing a thin layer of graphite to adhere to their surface. During the silicon infiltration firing process, the graphite-encased silicon particles first react with the graphite to form a silicon carbide layer. Then, the silicon particles generate silicon vapor, which breaks through the surface silicon carbide layer and reacts with the sample, resulting in a sample surface with only a silicon carbide shell. Surface treatment is easily performed using sandblasting. Furthermore, this invention uses an alumina plate to separate the sample from the silicon block during silicon infiltration firing. The alumina plate is burned off during firing, resulting in almost no silicon residue on the surface of the finished product upon completion.

The invention discloses a surface treatment method of an antibacterial self-cleaning PVC guardrail, and relates to the technical field of coating surface treatment.The surface treatment method comprises the steps that a PVC base material is degreased and dried and activated through plasma / corona, a bondable interface is established, and an instant coating window is limited; depositing an interface anchoring-buffering integrated base coat formed by catechol-functional silane and a hydrotalcite-like dot matrix on the activated surface; a Si-Zr-ORMOSIL composite gradient barrier layer is constructed on the prime coat, cerium oxide is doped in the Si-Zr-ORMOSIL composite gradient barrier layer, and UV-LED low-temperature curing is adopted; a fluoride-free wear-resistant easy-to-clean top layer is formed on the barrier layer, and a functional thin layer is arranged according to windowing rate and thickness mapping and does not make contact with PVC; long-term adhesion, weather resistance and easy cleaning synergism are realized, yellowing and stripping risks are reduced, the antibacterial / self-cleaning function is kept and stably exerted, the process takt is short, and mass production is friendly; quality control can be quantified, and the method adapts to multiple scenes.

The present invention relates to the manufacturing of devices that comprise films having piezoelectric, pyroelectric and / or ferroelectric properties, obtained at room temperature by aerosol deposition (AD). Advantageously, the devices according to the invention are functional without requiring subsequent heat treatment, and can be produced on various types of substrates, rigid or flexible, with varied thicknesses, whether in a thin layer (< 10 μm) or a thick layer (> 10 μm). More particularly, the invention relates to ceramic-polymer composite films having piezoelectric, pyroelectric or ferroelectric properties, obtained by AD, wherein the rate of polymer integrated into the film is controlled in order to obtain films that are functional immediately after deposition. The interconnectivity of the phases and the diameter of the ceramic grains are also controlled, ensuring that the desired functional properties are maintained. The invention further relates to an AD method for producing such devices.

The utility model relates to an analysis piece belongs to biological sample analysis technical field. The analysis piece solves the problem of inconvenient liquid control of traditional glass slide, unable to filter impurities, easy to produce air bubble. The scheme includes first glass slide and second glass slide: first glass slide is equipped with drop hole, vent hole and observation window (comprise first subsidence part and second subsidence part), second glass slide is equipped with liquid storage groove. When two layers are pasted, first subsidence part and liquid storage groove form the first liquid passage cavity with small width for filtering large particle, second subsidence part forms the second liquid passage cavity with large width for liquid flat storage, vent hole is located away from drop hole one end, is used for discharging air to avoid air bubble. When using, liquid is dropped from drop hole, and after filtering through first liquid passage cavity, it flows into second liquid passage cavity and is evenly flat, forms the thin layer suitable for microscope observation. The analysis piece simplifies the operation, improves the observation accuracy, and is suitable for biological sample analysis.

The utility model relates to evaporation device technical field discloses an evaporation device, including evaporation bin, motor, first elbow pipe etc. Motor is located on evaporation bin upper surface, its rotor sleeve joint conducting ring and coaxial installation rotating rod, and rotating rod is linked with conducting ring. First elbow pipe is located in the bottom end of rotating rod, and the bottom end is connected with second elbow pipe through mounting rod, and the surface of mounting rod evenly is equipped with heating plate. Evaporation bin inner chamber bottom has support frame, and the bottom end of second elbow pipe is installed on support frame through bearing. When the device works, motor drives rotating rod to rotate, and conducting ring makes heating plate rotate and continuously electrifies and heats in rotation, forms dynamic heating. The rotation of heating plate makes liquid material form thin layer liquid film under the centrifugal action, increases the contact area of liquid and heating surface, accelerates heat conduction, and the shear force produced by rotation destroys the surface tension of liquid, promotes liquid update, avoids local overheating coking, and effectively improves the evaporation efficiency of sewage.

This invention relates to a long-term protective cleaning method for furnaces, belonging to the field of aluminum production technology for bathroom fixtures. Based on the height of the molten metal surface and the position of the charging port relative to the flame during normal furnace production, the inner surface of the furnace to be coated is divided into three coating areas: a molten pool contact area, a splash scouring area, and a flue gas condensation area. A transition zone is set between adjacent coating areas. Boron nitride coating material is used, combined with gradient control of viscosity and solid content, to ensure high scouring resistance in the molten pool contact area, balanced adhesion inhibition and bonding strength in the splash scouring area, and the formation of a smooth thin layer in the flue gas condensation area to reduce particle deposition. The overlapping coverage of the transition zone and the secondary sealing spraying eliminate interface steps and micropore defects, improving the continuity and stability of the coating, reducing furnace downtime and cleaning costs, and overall improving the furnace's operating efficiency and service life.

This invention belongs to the field of morphology measurement technology and discloses a measuring device and method for measuring the deformation and surface microstructure of stacked sheets. The measuring device includes a light source, a collimating lens, a beam splitter, an objective lens, a compensating optical path difference glass plate, a reflecting mirror, a displacement stage, a beam steering microdevice, a tube mirror, and a camera. During the measurement process, the beam splitter separates the light from the light source into transmitted light and refracted light. The transmitted light passes through the beam steering microdevice and enters between adjacent stacked sheets to become measurement light, which is then reflected to the surface of the stacked sheets. The compensating optical path difference glass plate compensates for the optical path difference generated by the measurement light passing through the beam steering microdevice. The reflecting mirror reflects the refracted light from the beam splitter as reference light into the tube mirror. The tube mirror combines the reference light and the measurement light to form an interference pattern in the camera. The measurement method of this invention can solve the problem of accurately measuring the surface deformation of each thin layer in a stacked sheet and the morphology of the surface microstructure of the stacked sheet.

The application discloses a method for identifying saponin components in ginseng, American ginseng, radix notoginseng, health-care wine and preparations by a thin layer method, and can identify 9 saponin components in ginseng, 8 saponin components in American ginseng, 5 saponin components in radix notoginseng, 10 saponin components in health-care wine and Baoyuan decoction by a simple processing method, thereby providing a basis for identifying multiple components in traditional Chinese medicinal materials, health-care wine and traditional Chinese medicinal preparations and providing a reference for product quality control.

A method and structure for a transfer process for an acoustic resonator device. In an example, a bulk acoustic wave resonator (BAWR) with an air reflection cavity is formed. A piezoelectric thin film is grown on a crystalline substrate. Patterned electrodes are deposited on the surface of the piezoelectric film. An etched sacrificial layer is deposited over the electrodes and a planarized support layer is deposited over the sacrificial layer. The device can include temperature compensation layers (TCL) that improve the device TCF. These layers can be thin layers of oxide type materials and can be configured between the top electrode and the piezoelectric layer, between the bottom electrode and the piezoelectric layer, between two or more piezoelectric layers, and any combination thereof. In an example, the TCLs can be configured from thick passivation layers overlying the top electrode and / or underlying the bottom electrode.

The invention relates to a chemical polishing process for obtaining a batch of smoothed wafers. It comprises supplying several silicon wafers, each with a cutting face; measuring the diffuse reflectivity of the cutting face of each silicon wafer; determining an immersion time per wafer for a set of wafers from among those supplied, each immersion time being a function of the diffuse reflectivity of the corresponding cutting face; and anisotropic wet etching of each wafer in the set of wafers along silicon crystal planes by immersion in an etching solution for the corresponding determined immersion time, to obtain the batch of smoothed wafers. Each immersion time is determined to ensure consistent deposition of a thin layer on the cutting face of each wafer in the batch of smoothed wafers. Figure 1

The application relates to the technical field of metal electrodes, and discloses an aluminum electrode and a preparation process and application thereof. The preparation process of the aluminum electrode comprises the following steps: printing aluminum paste, wherein the aluminum paste comprises aluminum powder, a metal compound, an organic phase, an inorganic glass phase and conductive carbon nanomaterial, the inorganic glass phase comprises rare earth oxides; sintering the aluminum paste: placing the aluminum paste in a pre-sintering section at 150-350 DEG C, so that the organic phase is volatilized and decomposed; placing the aluminum paste in a middle sintering section at 350-600 DEG C, so that the inorganic glass phase is softened into a glass body, and a silicon-oxygen protective thin layer is formed on the doped polysilicon after etching and anti-reflection passivation; placing the aluminum paste in a post-sintering section at 600-700 DEG C, so that a metal-based composite carbon nanomaterial layer is formed on the silicon-oxygen protective thin layer, the aluminum powder is gradually dissolved, and the aluminum layer is formed on the metal-based composite carbon nanomaterial layer after cooling. The aluminum paste is not in contact with the doped polysilicon in the sintering process, and the obtained aluminum electrode can greatly reduce the interface metal composite and contact resistance.

The utility model discloses a kind of PE packaging bag processing blow molding machine cooling device, comprising: cooling liquid tank, cooling liquid tank top is fixedly connected with bottomless heat sink, one end inside bottomless heat sink is equipped with driving mechanism, another end inside bottomless heat sink is equipped with liquid receiving mechanism, through window is set in the middle of the back of bottomless heat sink, through inlet window is set in the middle of the front of bottomless heat sink, one end of the top of bottomless heat sink is fixedly connected with flat mouth pipe;The utility model extracts cooling liquid from cooling liquid tank by liquid pump, is sent to flat mouth pipe by multiple bending type cooling pipe, heat of mould is taken away by increasing contact area, cooling liquid with heat is fan-shaped sprayed to bottomless heat sink from flat mouth pipe, thin layer liquid film is formed on the liquid receiving heat-conducting inclined plate of staggered inclination, air after filtration is inhaled by motor-driven fan, air and flowing cooling liquid are fully contacted, cooling liquid is divided into droplet, realizes depth heat dissipation by penetrating liquid film and droplet gap.

This application relates to the field of precision mechanical design and assembly technology, and provides a method for adjusting the pitch angle of a fixed lens mount for a high-power laser. The method includes: cleaning the surfaces to be bonded on the lens and the curved glass block; applying epoxy resin adhesive to the bonding surface of the lens to form a pre-assembly of the lens and the curved glass block; pre-tightening a stainless steel curved lens mount in a pre-drilled mounting hole in the laser; applying UV adhesive to the curved surface of the curved glass block; bonding the curved surface of the curved glass block with the curved bonding surface of the lens mount; applying uniform pressure along the central axis of the arc to form a uniform thin layer of adhesive and remove air bubbles; adjusting the tilt angle of the lens mount by observing the alignment of the optical path, and swinging the curved glass block and lens along the curved surface direction to adjust the pitch angle of the lens until the optical path reaches the preset direction; irradiating the curved bonding area with a UV lamp to completely cure the UV adhesive, thus completing the pitch angle adjustment and fixation of the fixed lens mount.

The invention relates to a method for transferring a thin layer that comprises carrying out a first step of localised ion implantation of hydrogen, helium, a noble gas, or a mixture of same in a donor substrate in order to create a weakened region; carrying out a second step of ion implantation of hydrogen and / or helium in the donor substrate in order to create a weakened plane delimiting the thin layer; bonding the donor and acceptor substrates by means of molecular adhesion; detaching the thin layer, which comprises a second heat treatment step. A first heat treatment step is carried out on the donor substrate between the first and second ion implantation steps in order to grow microcracks so as to weaken the weakened region. The conditions of the first ion implantation step and of the first heat treatment step are such that the donor substrate is free of bubbles during bonding and such that the weakened region is a fracture initiator.

The invention relates to a method for preparing a substrate comprising a thin layer (3) of piezoelectric material transferred onto a support (5), the method being based on Smart Cut technology comprising an implantation step (S2) of a donor substrate (1) and an assembly step (S4). According to the invention, the preparation method includes, prior to the implantation step (S2), a plasma treatment step (Sp) comprising exposing the donor substrate (1) to a plasma of a neutral gas. Figure 2

The invention relates to a method for preparing a single-domain thin film (4) of piezoelectric material, comprising finishing a first layer (8) transferred onto a substrate (2). The finishing process includes heat treatment of the free face (9) of the first layer, followed by its thinning to form the single-domain thin film (4). According to the invention, the thinning of the first layer (8) comprises reactive ion etching using a plasma prepared by a mixture of a noble gas and a chlorinated gas. Figure 2

A system for measuring the environment using high-frequency ultrasonic pulses to interrogate thin films on the imaging surface of a CMOS integrated GHz Ultrasonic imager substrate. In one embodiment the device uses a Peltier cooler and heater chip to detect the dew point by the act of moisture condensing on the surface. Integrated temperature measurement is enabled by using some of the pixels, isolated from the environment, to be reflectors that measure the phase change in the reflected signal due to the change in the speed of sound in the silicon substrate. In another embodiment a thin film is exposed to gases, changing its ultrasonic impedance, which can be used to extract the film thickness and its ultrasonic properties.

The application discloses a composite coating material with force-induced luminescence function and lubrication failure detection application, relates to the technical field of material lubrication monitoring, and the composite coating material takes epoxy resin as a continuous phase matrix, dopes zinc sulfide copper activated luminescent powder (ZnS:Cu) as a luminescent functional phase, and polytetrafluoroethylene (PTFE) powder as a wear-resistant and lubricating enhanced phase, wherein the mass ratio of the ZnS:Cu luminescent powder and the PTFE powder is 2:1, the mass ratio of the ZnS:Cu luminescent powder and the epoxy resin matrix is 3:10; the ZnS:Cu luminescent powder has a particle size of 28-30 microns and is coated with an Al2O3 thin layer on the surface, and the average particle size of the PTFE powder is 3 microns. A double-mode luminescent coating can be formed by constructing an electrode / driving structure, and the double-mode luminescent coating has force-induced luminescence and electroluminescence functions. After color powder is added to the original components, white light emission can be realized under friction luminescence and electroluminescence, the double-mode luminescent coating is suitable for various metal friction pairs, supports remote monitoring and fault early warning, and has a wide application prospect.

The objective is to provide a method for manufacturing a vehicle wheel and a vehicle wheel that makes it possible to highlight the presence of a logo formed by engraving on the design surface where the metallic color of the metal base material is visible. [Solution] The entire design surface that has been machined on a lathe is polished to form a polished surface. A thin layer of transparent clear paint is applied to the entire polished design surface to form a first clear layer on the polished surface. A portion of the design surface on which the first clear layer has been formed is engraved with a cutting tool, engraving the first clear layer and the metal base material of the wheel body, exposing the metal of the metal base material and leaving the cutting tool marks to form a logo area with multiple engraved lines including sharp convex lines. Without polishing the engraved logo area, a second clear layer is applied to the entire design surface in its original state, with a thickness greater than the film thickness of the first clear layer, thereby maintaining the sharpness of the engraved lines of the logo area and creating a design surface that highlights both the polished surface and the logo area.

The application discloses a coating material for silicone and fiber cloth composite and a forming process. The coating material comprises a bottom layer and a thin layer, the bottom layer contains modified hydrogen-containing silicone oil A (containing polyether and quaternary ammonium salt), the thin layer contains modified hydrogen-containing silicone oil B (containing epoxy group) and modified white carbon black. Through gradient vulcanization of the semi-cured bottom layer and the fully-cured thin layer, a release paper is not needed, the production process is simplified, the cost is low, and environmental protection is good. The coating material has good weather resistance, soft hand feeling and clear surface patterns, and solves the problems of poor interface bonding force, insufficient wear resistance, difficult consideration of hand feeling and mechanical properties and limited decoration of the existing silicone leather.

Method for the reversible surface modification of metal and glass surfaces incompatible with infrared optical measurements for temporary matting, sealing, and preservation for optical measurements using fringe projection, laser, or thermographic methods, wherein a means is first applied to the surface of the object under investigation to produce at least one thin layer with uniform spectral reflectance and scattering properties, enabling optical measurement, wherein an optical measurement is then carried out using fringe projection, laser, or thermographic methods, and wherein the means used to produce the at least one layer, due to its volatility, removes itself automatically and without residue after application by sublimating the reflectance and scattering layers under normal atmosphere after a residence time of a few minutes to several hours.characterized in that an agent is used which has the hydrocarbon adamantane as an essential component, wherein the adamantane is used as a component of a solution consisting of 1 to 15% adamantane and 99 to 85% medium- or low-boiling light naphtha or cyclohexane or where the adamantane is used as a component of a solution consisting of 1 to 15 wt% adamantane and 99 to 85 wt% 2-methylbutane or wherein the adamantane is used in a saturated solution tempered at 50°C as a component of a solution consisting of 5% adamantane and 80% ethanol and 15% medium-boiling light naphtha or wherein the adamantane is used as a component of a supersaturated solution consisting of 15 to 30 wt% adamantane and 85 to 70 wt% ethanol or naphtha or cyclohexane or wherein the adamantane is used in a saturated solution tempered at 50°C as a component of a solution consisting of 15 wt% to 20 wt% adamantane and 85 wt% to 80 wt% medium-boiling light naphtha or cyclohexane.

The present invention relates to a method for manufacturing a composite structure including a thin layer of a single crystal semiconductor, comprising the steps of: a) providing a donor substrate; b) implanting the donor substrate with ions of a light species, except in an annular peripheral region, to form a buried weakened surface, the implantation conditions defining a first thermal budget for blistering and a second thermal budget for splitting; c) forming a stiffening film on the donor substrate having a thickness of 0.5 microns or more, the stiffening film being performed by applying a thermal budget lower than the first thermal budget, the stiffening film leaving bare a number of regions of the front side, the regions having lateral dimensions of 50 microns or less; d) depositing a carrier substrate on the donor substrate, the thermal budget being higher than the first thermal budget; and e) cleaving to form the composite structure.

The utility model discloses a kind of minimalist cylindrical structural members, related technical field of cylindrical battery, including single pass shell, the single pass shell is installed with roll core, the bottom of the single pass shell not opening is equipped with insulating rubber layer, the upside of the roll core is connected with negative electrode current collector on the insulating rubber layer, the copper bar that is fixedly connected on the negative electrode current collector penetrates the roll core, the upper end of the roll core is equipped with and the copper bar is connected with positive electrode current collector;The utility model uses thin layer silicone rubber to realize permanent insulation between negative electrode current collector and shell, replace traditional plastic insulating ring;Adopt negative electrode current collector center welding pure copper bar, penetrate roll core center through hole, positive electrode current collector open center hole and cover insulating ring to form longitudinal conductive isolation channel;Integrally stamping forming aluminum cover plate, negative electrode column is insulated with cover plate by aluminum oxide ceramic ring, cancel traditional lower plastic part, make internal space utilization rate improve.

This utility model relates to an automatic sieving and impurity removal device for submerged arc welding flux in printing plate roller processing, belonging to the field of printing plate roller technology. The device includes a housing and a permanent magnet roller disposed within it. By incorporating a dispersion component, the flux pile can be leveled and dispersed when it falls onto the surface of the conveyor belt. The thickness of the flux passing through the permanent magnet roller can be controlled, ensuring that a single layer or thin layer passes through, reducing the accumulation of particles of different properties in the flux, improving the adsorption effect of the permanent magnet roller on impurities, and effectively reducing flux impurity residue. By integrating the permanent magnet roller, sieving mechanism, and air separation mechanism for coordinated operation, particle size can be precisely controlled; the permanent magnet roller efficiently removes ferrous impurities; and finally, air separation thoroughly removes light non-metallic impurities, effectively improving the overall efficiency of the impurity removal operation.

The application discloses a kind of thermochromic anti-counterfeiting coating and preparation method thereof, belong to optical anti-counterfeiting field.The color-changing anti-counterfeiting coating is composed of three-layer structure, and the upper and lower two layers are the thin layer obtained by heating and curing different concentrations of polymer solution, and the middle layer is the structural color phase change thin layer obtained by spraying structural color phase change coating and heating solvent volatilization, wherein the structural color phase change coating is obtained by mixing structural color nano pigment with monodisperse characteristics and phase change material in ethanol.The thermochromic anti-counterfeiting coating can present different colors when heated to different temperatures, and the coating can recover to the initial color after cooling, and the multiple color changes make it have broad application prospects in the field of high-level anti-counterfeiting.

This invention relates to a method for fabricating an axial vortex generator. A three-dimensional solid model of the axial vortex generator is constructed, and a sag compensation design is implemented for the thin-walled blade structure. Support structures are added, and model slice data is generated. Metal powder is selected, and based on the model slice data, a layer-by-layer scanning strategy is employed for scanning and forming. The laser spot diameter ranges from 15μm to 25μm, and the powder layer thickness ranges from 8μm to 12μm. After forming, the component is separated from the substrate by wire cutting, and the support structure is removed. Compared with existing technologies, this invention, through the synergistic effect of a micro-spot and ultra-thin layer thickness, allows laser energy to be precisely applied to the thin-layer powder, achieving complete interlayer remelting and metallurgical bonding. This eliminates the conditions for crack and porosity formation at the source. CT detection confirms that the formed part has no microcracks and a density ≥99.9%, significantly improving the metallurgical quality of the component.