931 results about "Micron scale" patented technology

The invention discloses a cleaning control method and system based on an electronic cleaning agent, and the method comprises the steps: obtaining the distribution characteristics of pollutants and a material sensitivity judgment result through obtaining the micron-sized particle distribution data, chemical residue concentration data and surface roughness parameters of the pollutants on the surface of an electronic workpiece; according to the pollutant distribution characteristics and the material sensitivity judgment result, matching a candidate formula from a preset cleaning agent formula database, calculating pollutant removal rate predicted values of different concentration and time combinations through a linear regression algorithm, and determining optimized cleaning agent formula parameters and cleaning strength control parameters; and in the cleaning process, the residual quantity of pollutants and the surface damage degree are collected in real time, if the residual quantity of the pollutants exceeds a preset threshold value T1 or the surface damage degree exceeds a preset threshold value T2, cleaning agent injection pressure and cleaning time parameters are dynamically adjusted, and updated cleaning execution parameters are generated. Accurate and efficient cleaning of the surface of the electronic workpiece is achieved.

The invention belongs to the technical field, and discloses a film coating processing technology simulation and optimization system based on digital twinning. The system is composed of a data acquisition module, a feature recognition and analysis module, a behavioral digital twinborn simulation module, a coating uniformity evaluation module, a process parameter optimization module and a coating distribution prediction module. The method comprises the following steps: acquiring a three-dimensional roughness digital model of a base material, accurately identifying a micron-sized local rough region and extracting geometrical characteristic parameters of the micron-sized local rough region; constructing a coating growth behavior digital twinborn model based on the geometrical characteristic parameters and the process parameters, and accurately simulating the coating growth process of the local rough area; and establishing a global coating uniformity quantitative evaluation system, and optimizing a process parameter combination by applying machine learning and a genetic algorithm. The system breaks through the limitation of traditional static shadow hypothesis, real-time tracking and accurate simulation of microstructure evolution in the deposition process are achieved, and the coating growth prediction accuracy is remarkably improved.

The invention discloses a double-PHA barrier system for a paper-based container and a paperboard as well as a preparation method and application of the double-PHA barrier system, and belongs to the technical field of paper-based material surface engineering and green packaging. The system sequentially comprises a paper base material, a water-based PHA dispersion hole sealing layer and a PHA extrusion compact layer from inside to outside. According to the invention, the micron-sized PHA dispersoid without cell debris is utilized, so that an efficient hole sealing effect which is difficult to achieve by a high coating amount in a traditional process can be achieved by only needing an extremely low coating amount, and the pinhole defect of an extrusion layer is eliminated from the source. And in cooperation with the modified PHA extrusion layer with the specific crystallinity, the problem of micro-cracking of a single coating during edge rolling forming is cooperatively solved. According to the system, excellent barrier performance is achieved through a thinner bio-based structure, and meanwhile the system has a wide heat sealing window and excellent repulp recycling performance. Compared with the prior art, on the premise that high performance is guaranteed, the consumption amount of packaging materials and the environmental burden are remarkably reduced.

The invention relates to the technical field of milling cutters, in particular to a multi-tooth micro-blade milling cutter and a manufacturing method and application thereof. The multi-tooth micro-blade milling cutter comprises a cutter handle and a cutter head body, wherein the cutter head body is fixedly connected to one end of the cutter handle; the multiple cutter teeth are arranged on the outer side face of the cutter head body, and each cutter tooth extends to the tail end, close to the cutter handle, of the cutter head body from the top end, away from the cutter handle, of the cutter head body; each cutter tooth comprises a front cutter face, a rear cutter face and a cutting edge, the cutting edge is provided with a plurality of continuously-distributed micron-sized protruding micro-blades, the micro-blades form an arc-shaped sawtooth structure, the micro-blades extend to the front cutter faces and form micro grooves in the front cutter faces, the micro-blades extend to the front cutter faces and form micro grooves in the front cutter faces, and the micro-blades extend to the rear cutter faces and form micro grooves in the front cutter faces. The multi-tooth micro-blade milling cutter has the structure of the front angle of the front cutter face of the milling cutter tooth and the rear angle of the rear cutter face of the milling cutter tooth, the linear cutting blade of the traditional cutter tooth is dispersed into micro blades, the stress concentration of the cutter is reduced, a plurality of convex micro blades are in grinding motion on the machining face in the milling process, and the milling and grinding combined machining effect is formed. Unification of machining efficiency and machining precision is achieved.

The invention discloses a high-temperature-resistant, bending-resistant and high-flexibility polyimide film for flexible display and a preparation method of the high-temperature-resistant, bending-resistant and high-flexibility polyimide film. According to the polyimide film, by introducing the nano silicon dioxide particles and constructing the porous structure design, the problems that a traditional polyimide film is insufficient in stability in a high-temperature environment, cracks are likely to be generated after bending, and the flexibility is poor are effectively solved. The polyimide film disclosed by the invention is prepared by adopting a diamine monomer and a dianhydride monomer as main raw materials, adding nano silicon dioxide particles, and carrying out solution polymerization, gelation, pore regulation and control and thermal imidization processes. The obtained polyimide film has a micron-sized porous structure, keeps stable at a high temperature of 400 DEG C, does not generate cracks after being bent for 100,000 times, has tensile strength of more than or equal to 150MPa, elongation at break of more than or equal to 25% and light transmittance of more than or equal to 85%, and is suitable for a substrate material of a flexible display device.

A micron-sized speckle preparation method for quasi-in-situ OIM-DIC mesoscopic strain field analysis comprises the following steps: (1) polishing the surface of a sample to be detected to obtain a bright and scratch-free mirror surface; (2) preparing Si powder turbid liquid; (3) dipping speckles of a sample to be detected in the Si powder turbid liquid to obtain micron-sized speckles; and (4) observing and shooting speckle morphology, and if Si particles are uniformly distributed and dispersed, applying the Si particles to quasi-in-situ OIM-DIC mesoscopic strain field analysis. The method is simple, convenient and rapid, low in operation and construction cost, high in practicability, good in particle dispersity, high in precision, more suitable for calculation of a quasi-in-situ OIM-DIC mesoscopic strain field, controllable in preparation process, low in cost and free of damage to the surface of a sample, the definition and stability of speckle characteristics are remarkably improved, DIC mesoscopic micron-scale operation under a quasi-in-situ OIM mechanical test can be effectively achieved, and the method is suitable for large-scale industrial production. And the grain and mesoscopic strain field information is successfully coupled.

The invention discloses a microcrystalline texture glass cover plate and a preparation method thereof. The microcrystalline texture glass cover plate comprises a glass body; a series of surface microstructures are arranged on the surface of the glass body, the section of each surface microstructure is in a wave shape, compared with a common glass cover plate, the glass cover plate is endowed with more excellent optical and mechanical performance due to the special structure of the microcrystalline glass, and the requirements of high-end markets are better met when the glass cover plate is applied to consumer electronics cover plates. The diversification of the MASK design provides diversification of the texture effect of the microcrystalline glass, and specific requirements are met. And the surface of the microcrystalline glass is processed more accurately by the yellow light development technology and reaches the micron level. Pyramid morphology of particles on the surface of the microcrystalline glass is regulated and controlled through a wet etching process, uniform etching is carried out, the texture effect is brighter, and the hand feeling is finer and smoother.

The invention discloses an optical microscopy method, system and device for positioning magnetic nanoparticles, and the method comprises the steps: obtaining an interference pattern generated when laser passes through a to-be-detected sample, and distributing the magnetic nanoparticles in the to-be-detected sample; the interference pattern is formed by interference of incident laser and scattered light of the magnetic nanoparticles; determining a distribution function of the interference pattern, and determining the central position of the magnetic nanoparticle according to the interference pattern and the distribution function; the device comprises a laser, an amplification objective lens, a focusing lens, an imaging unit and a processor, light emitted by the laser passes through a to-be-detected sample to generate an interference pattern, the interference pattern is amplified by the amplification objective lens and focused by the focusing lens to be imaged in the imaging unit, and magnetic nanoparticles are distributed in the to-be-detected sample. According to the embodiment of the invention, micron-sized space positioning of the magnetic nanoparticles can be realized, and the method can be widely applied to the technical field of optical positioning.

The invention relates to the field of decorative films, in particular to an indented pattern color scraping decorative film and a preparation method thereof.The indented pattern color scraping decorative film comprises a skin feeling functional layer, a pattern developing layer, a supporting strengthening layer and a coloring strengthening layer, the skin feeling functional layer, the pattern developing layer and the supporting strengthening layer are composited into an integrated structure through hot pressing, and micron-sized air guide grooves are formed in the bonding faces of all the layers; the air guide grooves are arranged in parallel along the extending direction of the dimpled grains, the 60-degree glossiness of the surface of the decorative film is less than 3GU, the pencil hardness is greater than 1H, and the texture spacing difference between the outline edge of the dimpled grains and the printed pattern layer is 0.1-0.5 mm, so that the decorative film is endowed with excellent stereoscopic visual effect and physical property. The dimpled grain structure in the skin-touch functional layer is directly formed on the surface of the skin-touch coating, the problem of interlayer dislocation caused by traditional composite embossing is avoided, it is ensured that the dimpled grain outline is clear, the peeling strength between layers is high, bonding is tighter, and no bubble is left on the bonding face between the layers.

The invention discloses a foot and leg integrated design foot and wheel matched type multi-degree-of-freedom piezoelectric robot and an excitation method thereof, and belongs to the field of centimeter-level small robots. According to the robot, piezoelectric ceramics are pasted on an integrated base body, and the piezoelectric ceramics are divided into two pieces of Y-direction piezoelectric ceramics and two pieces of Z-direction piezoelectric ceramics; when two paths of sine excitation signals with the phase difference of 90 degrees are applied to the Y-direction piezoelectric ceramic and the Z-direction piezoelectric ceramic respectively, the base body beam bends and vibrates in the horizontal (Y-direction) direction and the vertical (Z-direction) direction, the foot bottom end is driven to synthesize an elliptic track in the YOZ plane, and rotation motion is achieved through friction between the foot end and the ground. Similarly, an elliptical track can be synthesized in an XOZ plane under excitation of different signals, and linear motion is achieved through friction between the foot end and the ground; when a pulse signal is applied to the piezoelectric ceramic, the robot moves at a micron-order micro step pitch. The robot has the advantages of being simple in structure, high in response speed, capable of giving consideration to fast macro motion and precise micro motion and the like, and faces scenes such as large-range precise detection.

The invention discloses a method and application for ultrasonic-assisted laser additive manufacturing of a multi-scale structure coupling high-toughness aluminum alloy, and the method comprises the steps that high-Ni-content alloy steel powder is refined through high-energy ball milling, and then the refined alloy steel powder is dispersed and distributed in Al-Mg-Sc-Er-Zr alloy powder; an ultrasonic energy field is introduced to assist selective laser melting to form mixed powder, the ultrasonic energy field assists in generating nonlinear effects such as cavitation, acoustic streaming and heat effect, defects such as air holes and cracks are overcome to eliminate residual stress, and the Marlangoni effect is accelerated to increase the solidification speed; and finally, the high-strength and high-toughness aluminum alloy which has high density and is composed of micron-scale, submicron-scale and nano-scale multi-scale phase structures is prepared. The production cost is low, and the room-temperature tensile properties of the prepared high-strength and high-toughness aluminum alloy are as follows: the strength is greater than 850 MPa, and the fracture strain is greater than 6%.

The invention relates to the technical field of aluminum alloy guide rail machining processes, in particular to a high-precision manufacturing process of an aluminum alloy guide rail for rail transit, and the high-precision manufacturing process of the aluminum alloy guide rail specifically comprises the following steps: step 1, designing and smelting an alloy material, and utilizing component optimization to design an alloy formula to inhibit grain coarsening; impurity control: Fe < = 0.25%, and Mn < = 0.15%; the tensile strength is greater than or equal to 275MPa, and the ductility is greater than or equal to 12%, which is superior to that of similar products (conventionally less than or equal to 10%); micron-order precision control: the cross section dimensional tolerance is less than or equal to + / -0.15 mm (improved by 50% compared with the traditional process); 12 key parameters from smelting to finished products are monitored in real time, and the yield is increased to 99.8% from 92%.

The invention discloses a method for improving the medium-temperature strength of an additive manufacturing Al-Si alloy, and belongs to the field of metal materials. According to the method, the Al-Si alloy serves as a base body, micron-sized AlB2 and Ti powder are added, laser irradiation energy in the additive manufacturing process is used for enabling the micron-sized AlB2 and Ti powder to react, and nanoscale TiB2 and D022-Al3Ti strengthening phases are synthesized in situ so that the medium-temperature strength of the material can be improved. By optimizing the content of the components, the adding proportion of the AlB2 powder and the adding proportion of the Ti powder are controlled to be 1.20-1.60 wt.% and 1.80-2.40 wt.% respectively, and the mass ratio of the AlB2 powder to the Ti powder is 2: 3. Through the synergistic effect of the two nanoscale second phases, the alloy can have high strength in a medium-temperature environment without post-heat treatment, and meanwhile, the high percentage elongation after fracture is kept. The yield strength of the alloy in the environment of 300 DEG C reaches 190 MPa, the tensile strength reaches 200 MPa, the ductility reaches 10%, and the strength upper limit of the selective laser melting near-eutectic Al-Si alloy in the working environment of 300 DEG C is broken through. The mechanical property of the aluminum alloy is comparable with that of Al-Ni, Al-Ce and other heat-resistant aluminum alloys prepared through selective laser melting, and the aluminum alloy is lower in cost and lighter in density.

The invention belongs to the technical field of chromatographic packing, and particularly relates to a double-layer stacking hole type SiO2-coated SiO2 core-shell microsphere as well as a preparation method and application thereof. The core-shell microsphere takes micron-sized non-porous SiO2 as a core and takes a SiO2 nanoparticle stacking layer as a porous shell layer, the porous shell layer sequentially comprises a first SiO2 mesoporous shell layer and a second SiO2 mesoporous shell layer from inside to outside, SiO2 nanoparticles in the first SiO2 mesoporous shell layer are stacked to form a first gap pore channel, and SiO2 nanoparticles in the second SiO2 mesoporous shell layer are stacked to form a second gap pore channel. According to the invention, a porous shell structure with dual or multiple pore size distribution is constructed on the surface of a SiO2 core, and by integrating more than two pore sizes with obvious size difference, exclusive mass transfer paths are provided for solute molecules with different sizes, exclusive mass transfer channels can be provided for small-molecular compounds and macromolecular substances at the same time, and the pore size difference is greatly reduced. Therefore, the selectivity and column efficiency of chromatographic separation are remarkably improved.

The invention relates to the technical field of tungsten metal surface refinement, in particular to a method for refining grains on the surface of a tungsten material based on friction induction and application, and the method achieves grain refinement on the surface of refractory metal through the shear friction force and the thermal-mechanical coupling effect. Firstly, a tungsten material sample is in contact with a friction pair of a friction instrument, then a certain pressure is applied to the surface of the tungsten material through the friction pair, the material is heated to a preset temperature through a temperature control module, then rotary friction is conducted at a certain rotating speed, and after a period of time, a nanoscale gradient structure layer can be formed on the surface of the sample. By means of the method, the grain size can be refined to the nanometer level from the initial micrometer level, and the surface hardness of the material is greatly improved. The method is simple in process, low in cost and obvious in grain refinement effect, and has important engineering application value.

The invention relates to the technical field of laser processing, and discloses a laser processing method of a ceramic substrate, which adopts an ultrashort pulse laser and nanosecond laser dual-laser system process, integrates the advantages of precise surface modification of ultrashort pulse laser and efficient processing of nanosecond laser, and forms a micron-sized porous sacrificial layer on the surface of a ceramic material. Micropores and microcracks on the micron-sized porous sacrificial layer destroy the continuous heat conduction path of the original compact ceramic, and heat is gathered on the micron-sized porous sacrificial layer formed on the surface, so that when subsequent nanosecond laser acts, compared with the original smooth ceramic substrate, the generated cracks are easy to block, two-dimensional cracks are not easy to generate on the surface of the ceramic substrate, and the surface of the ceramic substrate is not easy to crack. And low-power and high-efficiency processing can be carried out on the ceramic material without coating an auxiliary material, and high-absorption and low-heat-influence processing is realized.

The invention belongs to the technical field of angle sensors, and particularly relates to a tilt angle sensor and a preparation method and application thereof. The tilt angle sensor provided by the invention comprises a base body and a micro-channel communicated with any two points in the base body, the micro-channel is filled with gallium-based alloy liquid, the surface of the micro-channel contains a plurality of bulges, and the average height of the bulges is 50-200 microns; the two ends of the micro-channel are sealed by conductive adhesive; the conductive adhesive is connected with the electrode; the matrix is prepared from polydimethylsiloxane. The micro-channel containing the micron-sized bulge structure is arranged in the base body, so that local capillary force gradient can be generated, and the body response speed of the gallium-based alloy liquid is accelerated; and meanwhile, the special structure of the micro-channel has directional textures, so that asymmetric flow resistance and multi-path conductive paths can be generated, and differential resistance changes are generated during inclination to realize multi-directional inclination angle detection. The detection sensitivity and the anti-noise capability of the tilt angle sensor are remarkably improved by inducing a nonlinear flow control effect through the bulges in the micro-channel.

The invention discloses a dry pattern transfer method for an AMB copper-clad ceramic substrate in the technical field of ceramic substrate sintering, and the method comprises the following steps: S1, manufacturing a positioning hole, and forming a process reference; s2, prefabricating a circuit pattern through a stamping process; s3, brazing material layers are printed on the two faces of the ceramic substrate; S4, the copper layer pattern and the ceramic substrate are assembled in an aligned mode; s5, carrying out high-temperature sintering on the copper layer and the ceramic substrate, and carrying out metallurgical bonding; and S6, the sintered substrate is subjected to cleaning, surface treatment and laser precision cutting. According to the method, laser positioning and micron-sized reaming are adopted, an accurate alignment reference is established, mechanical assembly errors are fundamentally eliminated, a copper circuit directly forms a preset pattern on a substrate through cooperation of a copper block pre-forming structure and an accurate brazing process, the lateral corrosion problem of a traditional etching process is avoided, and the production efficiency is improved. The size error of the product graph is reduced, and the product graph accuracy and the machine graph size consistency are improved.

The invention relates to the technical field of paper printing, in particular to a waterproof printing process of a paper printed matter. The method overcomes the problems of poor waterproof effect and poor adhesive force of printed matters caused by imperfect traditional printing processes. According to the method, the printed matter is obtained by pretreating the base material, coating the bottom layer, coating the surface layer and calendering the mirror surface roller; parameters of corona treatment and micron-sized embossing treatment in pretreatment are changed; acrylic resin is modified and then mixed with nano silicon dioxide, and bottom layer coating liquid is prepared; a transition layer is arranged between the bottom layer coating and the surface layer coating; specially-treated hydrophobic nano-alumina is introduced into a surface coating liquid and has a synergistic effect with modified polyurethane, so that the waterproof effect and adhesive force of the printed matter are improved.

The invention relates to the technical field of material surface quality nondestructive testing, and discloses a rapid identification method for surface microdefects of a copper alloy strip, which comprises the following steps: firstly, applying a specific time sequence thermal excitation sequence to a surface to be detected, the sequence comprising a state pre-excitation pulse for inducing nonlinear response of thermal physical properties of a material; secondly, synchronously acquiring whole-process dynamic thermal response under the action of thermal excitation, and constructing a thermal response data cube; thirdly, extracting a time-temperature response curve for each pixel point in the data cube, and calculating a multi-dimensional dynamic thermodynamic feature vector; and finally, inputting the feature vector into a pre-trained supervised learning classification model to obtain a pixel-level classification label, and performing post-processing to determine the type, position and size of the defect. According to the method, the nonlinear and spectral response difference of the material is deeply excavated, the feature vector with high discrimination degree is constructed, and the detection sensitivity and classification accuracy of micron-sized physical and chemical defects can be effectively improved.

The invention provides a preparation method of a nickel-based WC alloy coating on the surface of a glass mold punch. The preparation method sequentially comprises the steps of matrix pretreatment, hypersonic flame spraying, ultrahigh-speed laser remelting and aftertreatment. The nickel-based WC alloy coating is prepared on the surface of the glass mold punch by adopting a supersonic spraying and ultra-high-speed laser remelting composite process, on one hand, a mechanical interlocking framework is formed by adopting nano-scale WC powder and micron-scale WC powder composite double-peak gradient powder, rare earth oxide is doped, nano-particle aggregation is inhibited through a vacuum ball-milling process, and the mechanical interlocking framework is formed by adopting a double-peak gradient powder composite double-peak gradient powder; the compactness of a cladding layer is improved; and on the other hand, the parameters of the composite technology are controlled, it is guaranteed that nanoscale WC is completely dissolved in a molten pool, a W-C-Fe diffusion layer is formed on an interface, a WC / W2C hard phase is separated out after micron-sized WC is partially dissolved, the bonding strength is improved, and the compactness and hardness of the coating are improved.

The invention provides a method for preparing a honeycomb sandwich structure based on laser collaborative explosive welding, and belongs to the technical field of explosive welding. The method comprises the following steps: carrying out laser pretreatment on the surface of a honeycomb core to form a periodically distributed micron-sized pit array; submicron-order holes are constructed in the micron-order pit array based on a nanoimprint lithography method; covering the surface of the plane material with an energetic material layer, and carrying out explosive welding on the plane material and the pretreated honeycomb core by utilizing shock waves generated after the energetic material layer is detonated to obtain a honeycomb sandwich structure; the laser pretreatment adopts femtosecond laser treatment, the power density is 106W / cm < 2 >-107W / cm < 2 >, the pulse width is 100fs-500fs, and the distance between scanning paths is 10mu m-50mu m. According to the method, a metallurgical bonding layer and a residual compressive stress field are formed on the connection interface of the honeycomb core and the plane material through the synergistic effect of laser pretreatment, nanoimprint and explosive welding, crack propagation is inhibited, the fatigue life of a joint is prolonged, and thermal damage is reduced.

The invention relates to a high-toughness high-entropy alloy with an inverse gradient structure and a preparation method of the high-toughness high-entropy alloy, and belongs to the technical field of high-entropy alloy preparation. The high-entropy alloy chilled plate with set chemical components is obtained, and the set chemical components comprise Ni, Co, Cr, Al and Ti; the high-entropy alloy chilled plate is subjected to sectional type heat treatment, so that the grain size of the high-entropy alloy chilled plate is in a decreasing trend from the surface to the inner core and is decreased to the nanoscale from the micron scale, and the high-toughness high-entropy alloy with the reverse gradient structure is obtained; wherein the sectional type heat treatment comprises heat treatment of a heating section, an aging section with set temperature and set pressure and a cooling section which are arranged in sequence. According to the embodiment of the invention, the high-entropy alloy chilled plate is subjected to aging treatment under the set pressure and the set temperature, dynamic recrystallization of the high-entropy alloy chilled plate can be achieved, the purpose of refining grains is achieved, the decreasing effect of heat transfer is intensified, and therefore the high-entropy alloy of an inverse gradient structure is obtained.

The invention relates to the technical field of surface treatment and modification, in particular to a laser cladding process for slender shaft parts and a real-time monitoring method for the width-depth ratio of a molten pool. Comprising the following process steps that S1, dynamic segmented cladding is conducted, the number N of segments is scientifically calculated, and a non-adjacent skip welding strategy is adopted to disperse thermal stress; s2, gradient cooling, quenching, speed-controlled cooling and natural air cooling are carried out, and residual stress and grain coarsening are inhibited; s3, electromagnetic pulse straightening is conducted, the magnetic field intensity B is calculated according to the deformation amount and material parameters, and micron-sized deformation is corrected in a non-contact mode; and S4, closed-loop control is conducted, the width-depth ratio W / D of the molten pool is monitored in real time based on multispectral imaging and a deep learning model, and the laser power P and the clamping force F are dynamically adjusted. By combining thermal conductivity and geometric parameter dynamic segmentation and fusing multispectral intelligent sensing and non-contact straightening technologies, the problems of thermal stress accumulation, uncontrollable deformation and large process fluctuation in slender shaft laser cladding are solved, and the method is suitable for the high-added-value fields such as aerospace and precision machine tools.

The invention discloses a super-amphiphobic flame-retardant ice-resistant coating as well as a preparation method and application of the super-amphiphobic flame-retardant ice-resistant coating with a multi-layer surface coating, and belongs to the technical field of functional materials of electrical equipment. The coating comprises micron-sized ammonium polyphosphate, a nano-sized inorganic filler, fluorinated alkyl silane and a fluorine surfactant, the super-amphiphobic, flame-retardant and ice-resistant coating is constructed through multi-scale components, and the super-amphiphobic, flame-retardant and ice-resistant coating is spontaneously assembled on the surface of a base material in the coating process to form a coating surface with a molecular nanometer, micrometer and macroscopic multi-level structure; the coating shows good super-amphiphobic characteristics, the contact angle of the structure surface after long-time placement under the room temperature condition is basically kept unchanged, the contact angle to water and oil is still larger than 150 degrees after multiple times of cyclic friction and washing, meanwhile, the coating has excellent flame retardance, ice resistance and wear resistance, the icing delay time is greatly prolonged, and the coating has the good anti-freezing effect. And no open fire is generated when the cable is in contact with an external fire source, so that the cable has important engineering application value for electric power facilities under harsh environmental conditions.

A thermal protection structure of a high-temperature and supersonic aircraft belongs to the technical field of thermal protection of aircrafts under high heat flux and comprises a water absorption layer, a front edge area and two side areas, and the front edge area comprises a first evaporative cooling porous medium layer, a cross-scale porous medium layer and a high-temperature-resistant wall surface which are sequentially laid on the outer side of the front edge of the water absorption layer; the two side areas comprise a second evaporative cooling porous medium layer and a third evaporative cooling porous medium layer which are laid on the outer sides of the two sides of the water absorption layer respectively, and a coolant conveying pipeline communicated with the front edge and the two side areas is arranged on the inner side of the water absorption layer; fluid is sucked to the high-temperature-resistant wall face through the capillary acting force of micron-scale and nano-scale pores of the first evaporative cooling porous medium layer and the cross-scale porous medium layer, the millimeter-scale pores of the cross-scale porous medium layer provide steam escape channels, and the high-temperature-resistant wall face blocks direct disturbance of high-temperature main flow to the fluid in the porous medium. Steam outlets on two sides of a front edge stagnation point discharge steam; the device has the advantages of no need of an additional liquid supply power device, high temperature resistance and high cooling efficiency.

The invention discloses a blade-based in-situ measurement film temperature sensor, which belongs to the technical field of film sensors for aero-engines, and comprises a multilayer film structure, the multilayer film structure is arranged on the surface of a blade, the multilayer film structure and the curved surface of the blade are manufactured in a conformal manner, the thickness of the multilayer film structure is micron-sized, and the thickness of the multilayer film structure is micron-sized. And in-situ measurement of the blade surface temperature is realized. According to the invention, non-disturbance temperature measurement is realized through an ultrathin conformal structure, high temperature resistance, fast response and high precision are realized, and the problem of temperature measurement of aero-engine blades under extreme working conditions is solved.

The invention provides a continuous annealing process method for cooperatively regulating and controlling the shape of an ultrathin and wide precise foil, and relates to the technical field of advanced material processing frontier. According to the continuous annealing process method for synergistically regulating and controlling the shape of the ultrathin and wide precise foil, micron-sized precise foils with different marks, the specification of 0.02-0.2 mm and the width of more than 600mm are selected for continuous annealing, and the preparation process comprises the following steps: putting a cold-rolled and cleaned ultrathin and wide foil coiled material into a continuous annealing furnace for annealing treatment, and the method can be suitable for regulating and controlling the structure properties and the plate shapes of various ultrathin precise foils. The method can effectively control the abnormal growth of crystal grains, realizes the fine grain structure of the foil, improves the surface quality and the mechanical property of the ultrathin precise foil, fills the technical defects of the plate shape consistency and the structure property of the ultrathin and wide precise foil after annealing, and has positive significance in promoting the development of the key technical industry in China.

The invention relates to the field of numerical simulation, in particular to a porous ceramic model reconstruction and filtering performance simulation method, which comprises the following steps of: S1, obtaining internal structure image data of a ceramic material through micro-CT (Computed Tomography) scanning with micron-level resolution, and reconstructing a real three-dimensional microstructure of the ceramic material; s2, performing REV extraction and dynamic processing on the three-dimensional geometric model generated in the S1; s3, establishing a flow field model on the CFD, and setting corresponding boundary conditions; s4, the DPM is started, a particle injection source is configured, and particle physical parameters are set; s5, bidirectional coupling solution is executed, and high-precision particle motion and deposition process simulation is achieved; and S6, extracting simulation result data, and if the difference between the simulation result and the reference value exceeds a preset threshold value, returning to S4 and / or S5 to carry out parameter adjustment and model correction. According to the method, effective prediction of the particles in the porous structure can be realized.

The invention belongs to the technical field of crystal growth, and relates to a method and a system for regulating and controlling the crystal orientation in real time in a micron-sized single crystal growth process, which are used for realizing real-time microscopic monitoring on the crystal growth state by collecting inherent physical signals of a crystal growth interface area and generating original signal data. Extracting characteristic parameters associated with crystal orientation deviation from the original signal data, generating a crystal orientation deviation characteristic vector, inputting the crystal orientation deviation characteristic vector into a preset mapping model, generating a crystal orientation deviation quantitative index to calculate a local thermal field regulation and control instruction, the micro heat source array is driven to apply a local thermal field gradient to a target area of a crystal growth interface so as to guide the crystal orientation to return, so that global thermal stress fluctuation and new crystal defect hidden dangers caused by traditional large-range thermal field adjustment are avoided, flexible fine adjustment of the crystal orientation is realized, the internal quality and uniformity of crystal growth are greatly improved, and the crystal growth efficiency is improved. Therefore, the single crystal quality and the yield are obviously improved.