1630 results about "Anodic oxidation" patented technology

The electrochemical mechanical polishing method and device are characterized in that a workpiece clamping device is adjusted according to the size of the semiconductor wafer and is adsorbed on a pressurizing device, and the semiconductor wafer is connected to a positive electrode of a power supply through a conducting ring to serve as an anode of an electrolysis system; the fixed abrasive pad is fixed on the polishing disc through a conductive adhesive and is connected to a power supply cathode through a conductive ring to serve as a cathode of the electrolysis system; during polishing, a polishing solution is connected with a conductive adhesive for fixing the polishing pad through a through hole in the fixed abrasive pad to form an electrolytic tank path, chemical oxidation and anodic oxidation are carried out on the surface of the third-generation semiconductor wafer during polishing to form a passivation oxide layer with low hardness, and valleys of the passivation oxide layer are passivated and protected. And the peak is quickly removed by the fixed abrasive, so that a polishing mode of anodizing and online removing the surface of the third-generation semiconductor wafer is realized. The method has the advantages of high abrasive utilization rate, high material removal rate, good surface quality, recycling of the polishing solution and the like.

The invention relates to the technical field of aircraft part processing, testing or inspection and the like, and provides an aircraft aluminum alloy plate aging evaluation method based on an equivalent circuit model, and the method comprises the following steps: collecting electrochemical impedance spectrums of samples with different exposure age limits, and extracting electrochemical impedance spectrum characteristics of the samples; establishing an equivalent circuit model comprising solution resistance, coating resistance, coating capacitance, Warburg impedance, anodic oxide film charge transfer resistance, interface capacitance, aluminum alloy matrix charge transfer resistance, interface electric double-layer capacitance, inductance and corresponding resistance of the inductance based on the characteristics, wherein the equivalent circuit model comprises the solution resistance, the coating resistance, the coating capacitance, the Warburg impedance, the anodic oxide film charge transfer resistance, the interface capacitance, the aluminum alloy matrix charge transfer resistance and the interface electric double-layer capacitance; and analyzing a resistance curve and a capacitance curve obtained by fitting the model to complete the evaluation of the corrosion and aging degree. According to the method, systematicness and accuracy of aging evaluation are improved, an electrochemical mechanism in the corrosion process can be disclosed, time correlation modeling of the aging process can be achieved, and the method is suitable for long-term service performance monitoring and service life prediction of the aviation aluminum alloy structure.

The invention belongs to the technical field of plasmas, and provides a remote plasma generator, which comprises an ionization cavity, an ignition assembly, a magnetic core assembly and a heat dissipation assembly, and is characterized in that an air channel is formed in the ionization cavity; the ignition assembly is used for conducting excitation ignition on gas in the gas channel to form plasma. The ignition assembly comprises a dielectric sheet, a sealing structure and an ignition structure, and the dielectric sheet is attached to the ionization cavity; the sealing structure is arranged on the outer side of the dielectric sheet; the ignition structure is used for performing excitation ignition on gas; an anodic oxidation coating film is formed on the inner wall of the ionization cavity; an anodic oxidation coating film is formed on the surface of the dielectric sheet through an anodic oxidation process. The anodic oxidation coating film is formed on the surface of the dielectric sheet, the dielectric sheet serves as a dielectric material, meanwhile, the anodic oxidation coating film on the surface is tightly attached to the anodic oxidation coating film in the ionization cavity, the contact surface stress is increased, the dielectric sheet is prevented from cracking, gas corrosion caused by plasma bombardment is effectively reduced, and the service life is prolonged.

The invention discloses an environment-friendly electrolyte for anodic oxidation of titanium and titanium alloy workpieces and an electrolytic coloring method. The electrolyte comprises 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water. The electrolytic coloring method comprises the steps of pretreatment, anodic oxidation coloring and aftertreatment. The pretreatment comprises alkali washing oil removal, water washing and laser treatment; and an electrolyte mixed by 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water is used for anodic oxidation coloring. The post-treatment comprises sealing treatment and drying. According to the technical scheme, the technical problems that the anodic oxidation coloring technology is completely free of fluorine, low in toxicity and safe to operate, and the oxidation waste liquid is free of pollution and easy to treat can be solved, existing pretreatment steps can be simplified, and meanwhile uniform coloring is achieved.

The invention discloses a carbon-doped titanium dioxide nanotube-molybdenum disulfide energy-storage antibacterial material and a preparation method thereof. The preparation method comprises the following steps: carrying out primary anodic oxidation on a clean titanium foil in a mixed electrolyte of ethylene glycol, water and ammonium fluoride; after ultrasonic treatment is carried out in a hydrochloric acid solution for set time, secondary anodic oxidation is carried out, and the mixed electrolyte of the secondary anodic oxidation is the same as that of the primary anodic oxidation; annealing the titanium foil subjected to anodic oxidation twice in an argon atmosphere, putting an annealed sample into a mixed solution of sodium molybdate, a sulfur source and glucose, and carrying out hydrothermal treatment; and the titanium foil subjected to hydro-thermal treatment is cleaned and dried, and the carbon-doped titanium dioxide titanium foil with the surface covered with molybdenum disulfide is obtained. The MoS2-coated carbon-doped titanium dioxide nanotube (TNT-C-atMoS2) with high biocompatibility developed by the invention has a synergistic effect of charge antibiosis and chemical sterilization, so that the problem of intractable biological fouling of a titanium-based metal material in ocean engineering equipment is effectively solved.

The invention discloses a process for improving anodic oxidation consistency of an anode foil for an aluminum electrolytic capacitor, and relates to the technical field of capacitor manufacturing, and the process comprises the steps of multi-stage washing, etching, feeding, multi-stage formation, intermediate treatment, first post-treatment, roasting, second post-treatment, stability treatment, drying, rolling, inspection and packaging. Wherein the multi-stage formation adopts three-stage oxidation of low-temperature and low-current, medium-temperature and medium-current and low-temperature and high-current, so that an oxidation film forms a base layer, a growth layer and a high-density protection layer which are uniformly overlapped layer by layer, and the consistency and compactness of the oxidation film are synergistically improved through dynamic water washing, air drying and temperature field and fluid field regulation and control technologies; the oxide film is repaired through first post-treatment, the pore size of the oxide film is reduced, and the compactness of the oxide film is improved; and high-temperature roasting is combined, and a second post-treatment step is carried out, so that the oxidation film forms an aluminum oxide crystal structure which is stable, high in hardness and compact in structure, and the water resistance and reliability of the finished anode foil are enhanced.

The invention provides an anodic oxidation die-casting aluminum alloy and a preparation method thereof. The anodic oxidation die-casting aluminum alloy comprises the following elements in percentage by mass: 2-4% of Mg element, 0.2-2% of Si element, 1.6-2.4% of Mn element, 0.2-0.3% of Cu element, less than or equal to 2% of Zn element, less than or equal to 0.2% of Fe element, less than or equal to 0.2% of inevitable impurities and the balance of Al, wherein the sum of the mass content of the Mg element and the mass content of the Zn element is 2-4%; the surface chromatic aberration of the anodic oxidation die-casting aluminum alloy is lt; the white brightness L is larger than or equal to 85, the tensile strength ranges from 180 MPa to 210 MPa, the yield strength ranges from 80 MPa to 120 MPa, and the elongation ranges from 3% to 5%. The anodic oxidation die-casting aluminum alloy has excellent flowability and surface glossiness, and is good in surface quality and high in yield.

The invention discloses a high-strength 7xxx series aluminum alloy capable of being anodized and a preparation method thereof. The high-strength 7xxx series aluminum alloy capable of being anodized comprises the following components: less than 0.07% of silicon, less than or equal to 0.12% of iron, 1.2-1.6% of copper, 0.07-0.17% of manganese, 2.10-2.40% of magnesium, 0.003-0.012% of zirconium, 6.2-6.5% of zinc, less than or equal to 0.003-0.020% of titanium and the balance of aluminum and other inevitable impurity elements. The preparation method of the high-strength 7xxx series aluminum alloy capable of being anodized comprises the steps of smelting and casting, homogenizing treatment, hot extrusion and heat treatment and anodizing treatment. A 7xxx series aluminum alloy product prepared through the preparation method has good intergranular corrosion and exfoliation corrosion performance; according to the alloy performance, the tensile strength is larger than or equal to 480 MPa, the yield strength is larger than or equal to 450 MPa, and the ductility is larger than or equal to 9%; in the grain sizes of the profile, the average grain size is less than or equal to 150 microns, and the maximum grain size is less than or equal to 250 microns; and after anodic oxidation treatment, the polishing glossiness is larger than 450 GU, more obvious advantages are achieved, and the good market prospect is achieved.

A method of manufacturing a structure having multi metal layers includes: depositing a top metal layer on a bottom metal layer; forming a patterned photoresist on the top metal layer; etching the top and bottom metal layers through first hollow portions of the patterned photoresist to respectively form a top metal pattern and a bottom metal pattern; forming a second hollow portion in the patterned photoresist to expose a portion of the top metal pattern; etching the top metal pattern through the second hollow portion until a top surface portion of the bottom metal pattern is exposed by the etched top metal pattern, in which an etch selectivity of the top and bottom metal layers in the etching the top metal pattern is greater than 1.0; and anodizing the top surface portion to form an anodized segment of the bottom metal layer.

The invention relates to a metal surface silane coupling agent treatment method, and also relates to a metal material after surface treatment. Meanwhile, the invention also relates to application of the material in a high-frequency high-speed signal transmission base material. The uniform distribution of the coupling agent layer with the nanometer thickness on the metal surface is realized through the reaction of the non-hydrolytic silane coupling agent and the hydroxyl or oxide on the metal surface. The silane coupling agent is not hydrolyzed before reacting with the metal surface, and the number of unreacted silicon hydroxyl groups in the coupling agent layer is very small, so that in the subsequent composite material preparation and application process, the situation that the interface dielectric constant is increased due to a small amount of water molecules formed by condensation of the coupling agent on the metal surface can be avoided; therefore, high-speed transmission of high-frequency signals is interfered, and water molecules induce anodic oxidation wires to cause circuit board failure and other hidden dangers. Compared with traditional metal subjected to surface treatment through a hydrolyzed silane coupling agent, the interface bonding strength between the metal with the silane coupling agent layer with the nanoscale thickness and organic resin is greatly improved.

The invention belongs to the technical field of metal surface treatment, and relates to a preparation method of a metal surface lattice passivation corrosion-resistant film, which comprises the following steps of: polishing and cleaning a metal surface, constructing a three-electrode system, and applying cathode voltage to the metal to carry out surface modification treatment so as to realize metal surface lattice reconstruction, thereby obtaining the metal surface lattice passivation corrosion-resistant film. A compact adsorption layer of corrosion inhibition molecules is formed; the three-electrode system comprises metal as a working electrode, a platinum sheet as an auxiliary electrode and silver / silver chloride or saturated calomel as a reference electrode. According to the method, metal surface lattice reconstruction is achieved through cathode voltage treatment, the technical thought of traditional anodic oxidation is subverted, the passive film forms a regular lattice structure, defects in the film are greatly reduced, permeation of a corrosion medium is effectively blocked, and the corrosion resistance of metal is remarkably improved.

The invention discloses a high-salt-corrosion-resistant concrete pouring material and a preparation method thereof, and relates to the technical field of high-salt-corrosion-resistant concrete, and the high-salt-corrosion-resistant concrete pouring material comprises the following components in parts by weight: 5-10 parts of modified charcoal, 1.5-3 parts of a corrosion inhibitor, 320-360 parts of cement, 650-700 parts of river sand, 20-30 parts of silica fume, 0.3-0.6 part of super absorbent resin, and 0.2-0.8 part of a water reducing agent. According to the high-salt-corrosion-resistant concrete pouring material and the preparation method thereof, a protective film is formed on the surface of a reinforcing steel bar through the corrosion inhibitor, the anodic oxidation reaction is inhibited, the reinforcing steel bar is prevented from being corroded, eugenol releases corrosion inhibition molecules, a hydrophobic protective film is formed on the surface of the reinforcing steel bar, and electrochemical corrosion is inhibited; meanwhile, through the synergistic effect of a physical barrier and chemical passivation, the calcium-aluminum salt-eugenol composite corrosion inhibitor not only can block a corrosion path through physical film formation, but also can inhibit electrochemical reaction through chemical adsorption, so that the corrosion inhibition efficiency is improved.

The invention discloses an anodic oxidation production wastewater treatment system, which relates to the field of sewage treatment. The anodic oxidation production wastewater treatment system comprises a sedimentation tank, wherein a booster assembly and a roller are arranged in the sedimentation tank, and a medicine adding bucket, a grid plate and an aeration pipe are also arranged in the sedimentation tank. A multi-level grid plate is arranged in the sedimentation tank to slow down the flow of sewage, and the sewage is aerated in combination with the aeration pipe to help accelerate the coagulation and precipitation of flocs in the sewage. In addition, a booster assembly is arranged to pressurize the sedimentation environment, increase the dissolved oxygen content in the sewage, and make the sewage produce more bubbles when rolling to help the flocs connect and coagulate with each other, and settle quickly after being blocked by the multi-level grid plate. Finally, an installation frame moving along the bottom wall of the sedimentation tank is arranged to cooperate with a flippable side plate and a rolling plate, so as to scrape off the settled sludge and roll it under pressure through the roller, thereby reducing the water content of the sludge, thereby reducing the water content of the sewage discharge, and facilitating the treatment of the sludge.

The invention discloses an aluminum alloy surface and a treatment method thereof, and relates to the technical field of aluminum alloy surface treatment.The treatment method comprises the steps that the surface of an aluminum alloy is cleaned, subjected to chemical pretreatment, subjected to pulse anodic oxidation and then subjected to sealing treatment; an electrolyte used for anodic oxidation comprises the following components in percentage by mass: 10%-30% of sulfuric acid, 0.5%-1% of tea polyphenol, 0.1%-0.3% of cerous nitrate and 0.2%-0.5% of nano aluminum oxide; the confining liquid for confining is prepared from the following components in percentage by mass: 0.5 to 1 percent of chitosan particles, 0.2 to 0.5 percent of nano zinc oxide and 0.1 to 0.3 percent of cerium complex; wherein the cerium complex is cerium oxalate or cerium acetylacetonate hydrate. According to the aluminum alloy surface treatment method, the surface of the aluminum alloy matrix contains the pulse oxide layer and the closed film layer, and the formed aluminum alloy surface has good mechanical performance, insulating performance and anti-aging performance.

The invention discloses a preparation method of a high-strength 5000 series aluminum alloy sheet for anodic oxidation. An aluminum ingot, an aluminum intermediate alloy ingot and electrolytic aluminum water are used as raw materials, and the high-strength 5000 series aluminum alloy sheet for anodic oxidation is prepared through the steps of smelting, casting, homogenization treatment, hot rolling, cogging cold rolling, intermediate annealing, finished product low-temperature cold rolling, stress relief annealing, cleaning, straightening and trimming and finished product shaft splitting. The tensile strength of the aluminum alloy material with the thickness of 0.5-2.0 mm is larger than or equal to 280 MPa, the yield is larger than or equal to 240 MPa, and the ductility is larger than or equal to 8%. The grain size of any position of the surface of the obtained final product is smaller than or equal to 30 microns, the grain aspect ratio is 1.0-1.6%, it can be guaranteed that no material lines and different color lines appear on a 150 # zircon sand blasting anode, and the requirements for high-strength punch forming and anodic oxidation of the product are met.

The invention relates to the field of material science and mechanical engineering, in particular to a high-strength aluminum-magnesium-silicon material bolt for a new energy automobile and a preparation method of the high-strength aluminum-magnesium-silicon material bolt. The bolt is made of an aluminum-magnesium-silicon alloy, and the alloy contains magnesium, silicon, manganese, iron, chromium, titanium, scandium, rare earth elements and the balance of aluminum. By optimizing the proportion of rare earth elements (yttrium, lanthanum and cerium) and scandium, grains are effectively refined, the tensile strength, the yield strength and the ductility are improved, and meanwhile the corrosion resistance and the fatigue resistance are enhanced. The preparation method comprises the steps that vacuum melting is combined with the ultrasonic-assisted technology, alloy elements are evenly distributed, and then the material structure is optimized through solution treatment at the temperature of 540 DEG C for 1.5 h and aging treatment at the temperature of 160 DEG C for 8 h. And the surface of the bolt is subjected to anodic oxidation and coated with a composite coating containing silicon dioxide nanoparticles, so that the wear resistance and the corrosion resistance are improved. Through verification, the bolt has the excellent performance that the tensile strength is larger than or equal to 490 MPa, the yield strength is larger than or equal to 440 MPa, the ductility is larger than or equal to 8.5%, and the salt spray test time is larger than or equal to 1500 hours, and the fastening requirement of the new energy automobile under the complex working condition is met.

The invention relates to the technical field of aluminum alloy materials, and provides a high-thermal-conductivity 6xxx aluminum alloy, a preparation method thereof and an electronic product structural part. Wherein the 6xxx aluminum alloy comprises the following components in percentage by mass: 0.3 to 0.5 percent of Mg, 0.2 to 0.35 percent of Si, 0.08 to 0.12 percent of Ce, less than or equal to 0.10 percent of Cu, less than or equal to 0.15 percent of Fe, less than or equal to 0.05 percent of Mn, less than or equal to 0.10 percent of Zn, less than or equal to 0.05 percent of Ti, less than or equal to 0.15 percent of total impurities and the balance of Al; and Mg / Si is in the range of 1.3 to 1.5. According to the 6xxx aluminum alloy and the preparation method thereof, the content and the mass ratio of Si and Mn are accurately regulated and controlled, meanwhile, a trace Ce element is added, the thermal conductivity and the anodic oxidation performance of the 6xxx aluminum alloy are improved, solid solution and aging processes are further matched, the beta ''phase and the grain size are controlled, and the alloy has the excellent anodic oxidation performance while having the high thermal conductivity.

The invention relates to the technical field of aluminum plate preparation, in particular to a preparation process of an aluminum plate for an energy-saving and environment-friendly curtain wall material, which comprises the following steps: smelting an aluminum ingot into molten aluminum by using a smelting furnace, adding a refining agent into the molten aluminum, stirring, conveying the refined molten aluminum to a casting machine, and cooling to output a cast ingot; carrying out annealing treatment on the cast ingot, carrying out hot rolling on the annealed cast ingot by using a hot rolling mill so as to output an aluminum plate blank, carrying out surface treatment on the aluminum plate blank by using an anodic oxidation method, and coating the aluminum plate blank with an energy-saving and environment-friendly curtain wall material so as to output an aluminum plate; determining the preparation stability of the aluminum plate based on the temperature rise rate in the smelting furnace; if the preparation stability does not meet the requirement, the rotating speed of a stirrer in the smelting furnace is adjusted; and if the quality characteristics do not meet the requirements, the rolling reduction of the hot rolling mill is adjusted. The preparation stability of the aluminum plate is improved.

The invention relates to the field of titanium and titanium alloy processing, in particular to a photoetching micro-patterning mechanically-stable TNTs film and application thereof, and a preparation method of the photoetching micro-patterning mechanically-stable TNTs film comprises the following steps: (1) carrying out alkali heat treatment on the surface of a titanium-based material; (2) spin-coating photoresist on the surface of the titanium-based material subjected to alkali heat treatment; (3) covering the photoresist by using a mask, and exposing by using ultraviolet light; (4) soaking the exposed titanium-based material in a developing solution; (5) the titanium-based material obtained in the step (4) is soaked in etching liquid, and then ultrasonic cleaning and baking are conducted; (6) carrying out anodic oxidation on the etched region; (7) the photoresist is removed, and a mechanically stable TNTs thin film subjected to photoetching micro-patterning is obtained; the surface structure of the mechanically stable TNTs thin film subjected to photoetching micro-patterning is that TNTs are embedded in a groove formed by etching. Different pattern masks are manufactured through photoetching and wet etching technologies, square, hexagonal and circular (S / H / R) micro-patterns TNTs are formed, and higher stripping resistance and wear resistance are shown; in addition, the micro-pattern TNTs reserve a nanotube structure, so that the growth and differentiation of osteoblasts are facilitated; the micro-pattern TNTs show optimal coating mechanical stability, cytocompatibility and osteogenesis performance in an experimental group, and become an ideal platform for developing a multifunctional implant.

The invention relates to the technical field of aluminum alloy materials, in particular to a high-strength and high-toughness Al-V-Ti-Mn-Mg series aluminum alloy and a preparation method thereof.The high-strength and high-toughness Al-V-Ti-Mn-Mg series aluminum alloy mainly comprises, by mass, 0.05%-0.5% of V, 0.05%-0.5% of Ti, 0.4%-1.2% of Mn, 0.3%-1.2% of Mg, 0.1%-0.3% of Cr, smaller than or equal to 0.15% of inevitable impurity elements, the balance Al and inevitable impurities, and the balance Al and inevitable impurities. And at least one of Sc, Zr and Er, less than or equal to 0.2% of Sc, less than or equal to 0.2% of Zr, less than or equal to 0.2% of Er, and the balance of Al. The high-strength and high-toughness Al-V-Ti-Mn-Mg series aluminum alloy provided by the invention is less in coarse second-phase grains and excellent in anodic oxidation effect, and has excellent corrosion resistance and a small-color-difference coloring effect after anodic oxidation.

A method of manufacturing a structure having anodized parts includes: forming a bottom metal pattern with a dielectric layer thereon on a substrate, in which the dielectric layer has an opening exposing the bottom metal pattern; forming a semiconductor layer to cover the dielectric layer; forming a first metal layer on the semiconductor layer; forming a second metal layer on the first metal layer; forming a mask layer on the second metal layer to expose a portion of a top surface of the second metal layer; etching the second metal layer through the mask layer until a top surface of the first metal layer is exposed, in which an etch selectivity of the second metal layer and the first metal layer is greater than 2.0; anodizing the first metal layer through the mask layer to form an anodized segment; and removing the mask layer.

The invention relates to the technical field of plasmon nano photonics, and discloses a preparation method of a novel gradient metasurface, which comprises the following steps: pretreating an aluminum sheet; prefabricating a pattern on the aluminum sheet and performing anodic oxidation; the preparation method comprises the following steps: preparing an anodized aluminum oxide thin film, fixing the anodized aluminum oxide thin film on a glass sheet, placing the glass sheet fixed with the anodized aluminum oxide thin film in chambering liquid, and taking out the glass sheet to obtain the novel gradient metasurface. By adopting electrochemical and chemical corrosion methods, for gradient metasurfaces with different areas, different sizes and different directions, the diversity of adjustable parameters of the nano array can be enriched, the time is shortened, the cost is reduced, the manufacturing cost and time are reduced to a great extent, and the production efficiency is remarkably improved.

To provide a carrier for analysis that can suppress self-fluorescence.SOLUTION: A carrier 1 for analysis comprises a metal member 10 including a porous body 20, which includes a skeleton 22 formed by gathering a plurality of aluminum particles 21, and a plurality of gaps 23 encircled with the skeleton 22. The skeleton 22 has an outer shell 24, including an anodic oxide film including aluminum oxide, on surfaces of aluminum particles 21, wherein the porous body 20 has a porosity of 30 vol.% or more, the plurality of aluminum particles 21 have an average particle size of 0.1 to 20 μm, and the metal member 10 has an organic acid concentration of 150 / m2 / 100 μm or less.SELECTED DRAWING: Figure 1

The present invention relates to a method for simultaneously achieving a superhydrophobic and superoleophobic surface on 5,000 series aluminum alloy in an anodic oxidation process without a pre-patterning step, wherein the uniform anodic oxide film can be produced even without a pre-patterning step, thus making it possible to reduce manufacturing costs, the anodic oxide film can be imparted with superhydrophobicity and superoleophobicity according to a coating composition in which a cross-linked PDMS derivative represented by chemical formula 1 and an organic solvent are used in a specific mixing ratio, the coating composition has a low manufacturing cost and the coating film thickness can be adjusted to several to several tens of nm, thus enabling application to the coating of a microstructured oxide film, and the method can be useful for creating a machine learning database for developing 5,000 series aluminum alloy surface treatment technology.

The invention relates to the technical field of processing, testing or inspection of aircraft parts, and provides a method for detecting surface defects of an aluminum alloy plate with an epoxy coating. The method comprises the following steps: applying an epoxy coating doped with a zinc yellow pigment to an anodic oxide film to construct a coating test piece with a color difference indication function, and placing the coating test piece in a coastal atmospheric environment for exposure sampling. In the detection process, the gloss loss rate, the chromatic aberration, the contact angle, the defect area proportion and the corrosion current density are collected, a dynamic correction coefficient is calculated according to the hydrolysis degree of the zinc yellow pigment, all parameter thresholds are adjusted in a self-adaptive mode, and a threshold set is constructed. And in combination with scanning electron microscope image segmentation and Tafel extrapolation analysis, multi-source indexes are fused to judge whether the coating is invalid. According to the method, the hydrolysis behavior of the zinc yellow pigment can be tracked in real time, the judgment standards of optical, morphology and electrochemical indexes are automatically corrected, and the accuracy and reliability of failure detection of the epoxy coating aluminum alloy plate under the coastal service condition are improved.

The invention relates to a metal surface treatment production line with a double-position clamping structure, and relates to the technical field of anodic oxidation metal part production lines, the metal surface treatment production line comprises a production pool and a double-position conveying clamping mechanism, a fixed base is installed below the production pool, and the double-position conveying clamping mechanism is installed above the production pool; the double-position conveying and clamping mechanism comprises supporting frames and a material receiving and conveying assembly, the material receiving and conveying assembly is installed at the centers of the two supporting frames through bolts, a first conveying assembly is arranged on the side edge of the material receiving and conveying assembly, and a second conveying assembly is arranged on the side, away from the material receiving and conveying assembly, of the first conveying assembly; a third conveying assembly is arranged on the side, away from the first conveying assembly, of the second conveying assembly. The device has the effects that the production efficiency is greatly improved, meanwhile, the quality and stability of product production are guaranteed, and the manpower demand is reduced.

The invention discloses a low-carbon high-strength die-casting anode aluminum alloy and a preparation method and application thereof, and relates to the field of die-casting aluminum alloys and products thereof. The die-casting anode aluminum alloy is composed of the following components in percentage by mass: 1.61-3.0% of Mn; 0.85 to 4.7 percent of Mg; 0.01 to 3.8 percent of Zn; si < = 0.45%; fe < = 0.55%; cu < = 0.8%; 0.0001% to 0.012% of C; 0.005% to 0.10% of M; 0.002 to 0.6 percent of Ti; 0.001% to 0.4% of B; m is at least one of Nb, Y, La, Er and Sm. The content of impurities is less than or equal to 0.2 wt%; ti, B, C and M are added in the form of an Al-Ti-B-C-M composite fine grain alterant. The die-casting aluminum alloy which is low in cost, uniform in anodic oxidation appearance, free of different colors, excellent in comprehensive performance and capable of forming and machining thin-wall part products can be obtained.

The invention discloses a method for manufacturing anode foil of ultra-high voltage aluminum electrolytic capacitor with high dielectric constant, and belongs to the technical field of anode foil of aluminum electrolytic capacitor. The method comprises: (1) preparation of ultra-high voltage etching foil, including pretreatment of aluminum plain foil, pore formation, secondary pore expansion and tertiary pore expansion of etching foil, etc.; (2) preparation of Ag / TiO2 precursor solution, preparing titanium dioxide gel doped with different Ag contents by sol-gel method; (3) immersion coating treatment, preparing a uniform gel layer on the etching foil by immersion-pulling method; (4) preparation of ultra-high voltage anode foil, anodizing the etching foil after coating the gel layer at high voltage, and then annealing at high temperature. The ultra-high voltage anode foil prepared according to the present invention has a higher specific capacitance, and can also maintain a smaller loss factor tanδ.

The invention belongs to the field of photovoltaic modules, and discloses a perovskite crystalline silicon laminated photovoltaic module and a preparation method thereof.The photovoltaic module comprises front plate glass, and a top cell perovskite layer, a first adhesive film layer, a bottom cell crystalline silicon cell layer, a second adhesive film layer and back plate glass are sequentially laid on one side of the front plate glass; the edges of the top cell perovskite layer, the first adhesive film layer, the bottom cell crystalline silicon cell layer and the second adhesive film layer are wrapped and sealed through a composite frame, the composite frame comprises a substrate with the wall thickness of 0.1-2mm, the surface of the substrate is provided with an anodic oxide layer with the thickness of 4-6mu m, and the surface of the anodic oxide layer is covered with a polyimide layer with the thickness of 30-1mm. The laminated photovoltaic module adopts the composite frame to replace the existing butyl rubber for sealing, so that the metalized edge sealing is perfectly fused into the low-temperature laminating process, the sealing performance is superior to that of the butyl rubber, and the service life of the laminated photovoltaic module is prolonged.

Methods of and apparatuses for the manufacture of biomimetic physical antimicrobial polymer foils are disclosed. An example method of manufacturing includes providing a substrate. The method additionally includes depositing an aluminum-containing layer on the substrate. The method yet further includes anodizing an exposed surface of the aluminum-containing layer in a first bath so as to form a plurality of pores in the exposed surface of the aluminum-containing layer. Moreover, the method includes immersing the exposed surface of the aluminum-containing layer in a second bath, further etching the plurality of pores in the exposed surface of the aluminum-containing layer. Methods also include formation of templated polypropylene and cellulose films.