890 results about "Anodic oxidation" patented technology

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 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 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.

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 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 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.

The invention relates to a method for constructing a composite super-hydrophobic coating through double bonding. The preparation method comprises the following steps: taking a clean copper sheet which is not pretreated as a substrate, dipping the copper sheet in a suspension consisting of nanoparticles and sulfydryl-containing siloxane ethanol, taking out, washing, drying, dipping in a perfluoromercaptan ethanol solution, taking out, washing, and drying to obtain the copper-based super-hydrophobic surface coating. The coating prepared by the method has excellent super-hydrophobicity, icing resistance and stability. Different from an existing conventional preparation method, the method has the advantages that pretreatment operation such as abrasive paper polishing, strong acid etching or anodic oxidation does not need to be carried out on a copper sheet, and micro-nano roughening and low-surface-energy self-assembly can be completed on the copper surface only through two-step normal-temperature dipping. The method is simple in preparation process, mild in condition, free of expensive equipment, thin in coating thickness and small in influence on electric conduction and heat conduction of the copper substrate, intrinsic performance of copper can be reserved, the electric conduction / heat conduction characteristic of the copper substrate is considered, and the method has wide application value and prospects.

The invention provides an anodic oxidation passivation method of a neodymium-iron-boron permanent magnet zinc coating, which comprises the following steps of: performing electrochemical anodic oxidation by taking a neodymium-iron-boron permanent magnet with a zinc coating on the surface as an anode, a Pt sheet as a cathode and a passivation solution as an electrolyte, forming a passivation layer on the surface of the neodymium-iron-boron permanent magnet with the zinc coating on the surface, and cleaning and drying to obtain the neodymium-iron-boron permanent magnet with the zinc coating on the surface. A chromium-free passivation film is formed on the neodymium-iron-boron permanent magnet zinc coating, and passivation of the neodymium-iron-boron permanent magnet zinc coating is completed; the passivation solution is prepared from 10 g / L to 20 g / L of molybdate, 10 g / L to 15 g / L of ammonium fluozirconate, 1 g / L to 10 g / L of etidronic acid, 1 g / L to 10 g / L of sodium dihydrogen phosphate, 1 g / L to 10 g / L of nitric acid, 1 g / L to 10 g / L of phosphoric acid and the balance distilled water. According to the method disclosed by the invention, a complete, uniform and compact passivation film is formed on the surface of the zinc coating after passivation, the corrosion potential is improved while the corrosion current is effectively reduced, and the time for generating a rust spot in a salt spray test exceeds 72 hours.

The application discloses a preparation method of notebook computer shell added with recycled aluminum anodized aluminum strip, and specifically comprises the following steps: raw materials such as recycled aluminum, aluminum ingot and intermediate alloy ingot are subjected to smelting, casting, hot rolling, cold rolling, intermediate annealing, roughening cold rolling and cleaning and straightening to obtain a notebook computer shell added with recycled aluminum 5000 series aluminum plate strip. The average grain size of the aluminum alloy strip is less than 10 microns, the grain aspect ratio is 0.9-1.1, the maximum size of intermetallic compounds is less than 5 microns, the compound proportion difference in unit area is less than 1%, the sand blasting sand type on the surface of the aluminum material is 120-150# iron sand, the roughness Ra after sand blasting is 1.8+ / -0.3 microns, and the anodized surface is fine and free of material lines.

The invention is applicable to the technical field of process optimization, and particularly relates to a method for generating an anodic oxidation current density adjustment scheme based on mutual information entropy, which comprises the following steps of: obtaining process parameters in real time and carrying out adaptive filtering processing to ensure the accuracy and effectiveness of key characteristic parameter extraction and provide a high-quality data basis for optimization. Determining key feature parameters according to the process parameters and a mutual information entropy value of a preset optimization target; screening current density data to be optimized according to the key parameter influence weight; a to-be-selected current density curve matched with a preset oxidation quality standard is extracted from the to-be-optimized data, the deviation between a current value and the curve is calculated to serve as a to-be-selected optimization parameter, and an abstract standard is converted into a concrete basis. A self-adaptive adjustment scheme is generated in combination with to-be-selected parameters, process changes are dynamically adapted, fluctuation caused by static setting is avoided, high consistency of current density control precision and oxidation film quality stability is achieved, the optimization period is shortened, and production efficiency is improved.

The invention belongs to the technical field of catalytic materials, and particularly relates to a nickel-iron-cobalt entropy alloy nanowire three-dimensional interconnection grid film and a preparation method and application thereof. The preparation method comprises the following steps: taking an aluminum sheet containing copper impurities as a substrate, and preparing a three-dimensional ordered porous aluminum oxide template through anodic oxidation; then, the nickel-iron-cobalt entropy alloy nanowire is prepared in a pore channel limited range through direct current co-electrodeposition; the nickel-iron-cobalt entropy alloy nanowire three-dimensional interconnection grid film is obtained after the aluminum substrate and the 3D-AAO template are removed, the material is based on the mixed entropy effect and structural integrated design and can be directly used as a self-supporting electrode for efficiently and stably electrolyzing water for oxygen evolution, the three-dimensional grid structure and the self-supporting characteristic of the material promote electrolyte transmission and gas product desorption, and the oxygen evolution efficiency is improved. The mass transfer efficiency is improved, the use of a traditional binder is avoided, and the electrode stability is enhanced; the problems that an existing medium-entropy alloy catalyst is high in synthesis energy consumption, the catalytic activity is poor under the industrial-grade large-current working condition, active substances fall off in the reaction and the like are solved.

The invention discloses an aluminum alloy profile surface highlight corrosion-resistant treatment process which comprises the following steps: S1, pretreatment including degreasing and alkaline etching; s2, anodic oxidation; s3, chemical brightening treatment; s4, surface wiredrawing; s5, carrying out sand blasting; s6, highlight is conducted; s7, treating with a silane coupling agent; s8, carrying out secondary oxidation treatment; s9, performing nano-composite hole sealing; s10, spraying, printing and chemical brightening are used for replacing traditional mechanical polishing, so that the surface of the aluminum alloy profile is smoother, the uniformity of glossiness is improved, scratches possibly generated by mechanical polishing are avoided, stable chemical bonds are formed between the profile and a hole sealing layer through coupling agent treatment, the surface state is optimized, it can be ensured that a hole sealing agent can be attached more firmly, and the service life of the aluminum alloy profile is prolonged. According to the secondary oxidation treatment, an oxidation film is thickened after highlight treatment, the formed highlight surface is not affected, invasion of a corrosion medium is effectively blocked, nano-scale pores in the oxidation film are filled with nano silicon dioxide, a compact hole sealing layer is formed, and therefore the corrosion resistance of the workpiece is improved.

The invention discloses 7000 series aluminum alloy and a preparation method and application thereof, and relates to the technical field of aluminum alloy. The aluminum alloy comprises Al and the following components in percentage by mass: 6%-7% of Zn; 2.5%-4% of Mg; cu: 0.2%-0.7%; 0.05% to 0.2% of Mn; less than or equal to 0.05% of Cr; ti < = 0.1%; zr < = 0.1%; less than or equal to 0.15% of Si; fe is less than or equal to 0.15%. The aluminum alloy has high strength, high corrosion resistance and excellent anodic oxidation performance, and is suitable for the field of 3C electronic products or automobiles. The invention further provides a preparation method and application of the aluminum alloy.

The invention discloses an aluminum anodic oxidation electrolyte for improving the adhesion density of an electrode foil oxidation film, and relates to the technical field of anodic oxidation, the electrolyte comprises 3%-10% of ammonium dihydrogen phosphate, 0.5%-3% of sulfuric acid, 0.01%-0.2% of nano titanium dioxide or nano aluminum oxide, 0.05%-0.5% of an organic buffer agent, and the balance deionized water; the organic buffering agent is used for stabilizing the pH value in a range of 4.5-6.0; nano titanium dioxide or nano aluminum oxide is used as an oxidation film nucleation center to promote directional crystallization of gamma '-Al2O3; the sulfuric acid component improves the conductivity of the electrolyte; ammonium dihydrogen phosphate generates an aluminum phosphate barrier layer on the surface layer of the oxidation film to enhance the waterproof performance of the film layer; according to the electrolyte, the adhesion density and crystallinity of an oxidation film can be remarkably improved, the uniformity and waterproof performance of a film layer are improved, the specific volume stability and the formation efficiency are improved, and the electrolyte is suitable for continuous production of the high-performance aluminum electrolytic capacitor.

The invention belongs to the field of aluminum alloy processing, and provides a method for evaluating the corrosion resistance of an anodic oxide film and the corrosion capacity of a semi-synthetic cutting fluid, which comprises the following steps of: respectively taking a corrosive liquid or the semi-synthetic cutting fluid as an electrolyte and simulating a corrosive environment, and then taking an aluminum alloy sample as a working electrode to evaluate the corrosion resistance of the anodic oxide film and the corrosion capacity of the semi-synthetic cutting fluid; performing an electrochemical test in a corrosion environment to obtain charge transfer resistance Rct and corrosion current density Icorr, and then calculating a corrosion resistance index CI; the higher the obtained corrosion resistance index CI value is, the higher the corrosion resistance of the anodic oxide film of the aluminum alloy sample is, or the lower the corrosion capacity of the semi-synthetic cutting fluid is. And the corrosion resistance of the anodic oxide film or the corrosivity of the semi-synthetic cutting fluid can be rapidly and accurately evaluated.

The invention discloses a high-performance composite aluminum foil for a battery and a preparation method of the high-performance composite aluminum foil, and relates to the technical field of batteries. The method specifically comprises the following steps that S1, the surface of a composite aluminum foil is subjected to anodic oxidation, and a pretreated composite aluminum foil is obtained; s2, preparation of an organic-inorganic hybrid binder; s3, adding the organic-inorganic hybrid material and an emulsifier into deionized water, and uniformly mixing to obtain an organic-inorganic hybrid binder; s4, the surface of the pretreated composite aluminum foil is coated with an organic-inorganic hybrid binder, drying and curing are conducted, and the high-performance composite aluminum foil is obtained; compared with a traditional aluminum foil, the prepared composite aluminum foil is better in conductivity, longer in cycle life and better in mechanical performance.

The invention discloses a hydraulic valve body unit machining process and device, and relates to the technical field of valve body machining, and the hydraulic valve body unit machining process comprises the steps that a hydraulic valve body unit is placed in an electrolyte tool container, a preset working voltage is set, and an electrolysis environment is formed; a plurality of observation points are arranged on the surface of the hydraulic valve body unit, and real-time thickness data of the oxidation film are obtained; calculating oxidation film growth data of the hydraulic valve body unit according to the oxidation film real-time thickness data of the plurality of observation points; comparing the oxide film growth data with a standard threshold range, and if the oxide film growth data accords with the standard threshold range, adjusting working parameters of an electrolyte tool container according to a comparison result of the oxide film growth data and the standard threshold range; and electrolytic machining is stopped, and the hydraulic valve body unit subjected to anodic oxidation is obtained. The oxidation film growth data are monitored in real time in the anodic oxidation process, and the process parameters are adjusted in real time, so that the oxidation film preparation quality of the valve body workpiece can be effectively improved.

The invention discloses a medical titanium alloy surface modified coating for bone implantation, which is prepared by the following steps: step (1) plasma-assisted nitriding pretreatment: placing a titanium alloy matrix in a vacuum chamber, introducing high-purity nitrogen, hydrogen and argon mixed gas, maintaining the air pressure at 0.15-2.0 Pa, applying-50 to-400 V pulsed bias to the matrix, performing plasma nitriding for 45-90 minutes at the temperature of 450-600 DEG C, and performing plasma nitriding treatment to obtain a titanium alloy surface modified coating; forming a gradient nitriding layer; according to the medical titanium alloy surface modification coating for bone implantation provided by the invention, nitriding reinforcement of a matrix, micro-arc oxidation construction of micropores and anodic oxidation growth of a nano structure are combined, so that the problems that a coating in a single technology is weak in binding force and the nano structure is easy to fall off are solved.

According to the anodic oxidation technology suitable for the 6061 aluminum alloy, multi-component silica sol is adopted for conducting room-temperature dipping hole sealing and low-temperature curing on a 6061 aluminum alloy anodic oxidation film, and technology energy consumption and equipment requirements are reduced. The dense silicon network seals the membrane holes, prolongs the diffusion path of a corrosive medium and prevents the corrosive medium from invading the substrate, thereby greatly improving the corrosion resistance of the membrane layer and inhibiting pitting corrosion.

The invention discloses a medium-high voltage formed foil and a preparation method thereof, and an aluminum electrolytic capacitor, and the method comprises the steps: placing a corrosion foil sheet in vacuum plasma equipment, processing for a set time, introducing oxygen or a mixed gas of argon and oxygen into the vacuum plasma equipment, and carrying out the treatment for a set time; transferring the foil from the vacuum plasma equipment into a first organic solvent tank to be soaked for a certain time, wherein the boiling point of a first organic solvent is lower than 60 DEG C; and performing formation treatment. According to the technical scheme provided by the embodiment of the invention, the etched foil is pretreated, and the carbon content of the surface of the etched foil is reduced or cleared through the synergistic effect of physical cracking and chemical cleaning, so that the surface activity and cleanliness of the etched foil are improved. Meanwhile, according to the pretreatment step, carbon residues are thoroughly removed, pollution of impurity decomposition to a formation tank is avoided, the service life of tank liquid is prolonged, and meanwhile the current efficiency in the anodic oxidation process and the uniformity of an oxidation film can be improved through the corroded foil with the high surface activity and cleanliness.

The invention discloses a preparation method of an AAO / ZnMgAl-LDHs corrosion-resistant composite coating on an aluminum alloy surface, and belongs to the technical field of aluminum alloy surface protection treatment.The preparation method comprises the steps that firstly, an aluminum alloy base material is pretreated, then sulfuric acid and tartaric acid are mixed to prepare an anodic oxidation electrolyte, the treated aluminum alloy base material is placed in the electrolyte to be subjected to an electrified reaction to form an AAO film, and then the AAO film is subjected to heat treatment; and dissolving urea, magnesium salt and zinc salt in deionized water, adjusting the pH value to prepare an LDHs prefabricated solution, placing the aluminum alloy substrate with the AAO film in the LDHs prefabricated solution for in-situ growth, and finally washing and blow-drying to obtain the AAO / ZnMgAl-LDHs composite coating. The method is simple in preparation process, easy to operate, economical, environmentally friendly and good in hole sealing effect, the prepared AAO / ZnMgAl-LDHs composite coating is uniform and compact, the corrosion resistance of the aluminum alloy can be remarkably improved, the surface protection performance of the aluminum alloy can be effectively enhanced, and reliable guarantee is provided for application of the aluminum alloy in a complex environment.

The invention discloses a layered nano-porous copper loaded cuprous oxide / copper oxide nanowire composite material as well as a preparation method and application thereof. The material is a thin strip and comprises an amorphous substrate thin strip, multiple layers of nano-porous copper covering an amorphous substrate and a cuprous oxide / copper oxide two-component heterojunction nanowire loaded on the surface of the nano-porous copper. The preparation method comprises the following steps: firstly, freely dealloying an amorphous ribbon, and adding PVP (Polyvinyl Pyrrolidone) into dealloying corrosive liquid to generate layered nano-porous copper; then, copper hydroxide nanowires grow on the surface of each layer of nano-porous copper in situ through the anodic oxidation technology; and finally, converting the copper hydroxide into cuprous oxide / copper oxide nanowires with different component proportions by regulating and controlling the temperature by adopting a heat treatment process. The prepared composite material has a larger specific surface area and more active sites, and has unique structure and performance advantages in the field of photocatalytic degradation of organic dyes.

The invention discloses a high-strength corrosion-resistant aluminum profile machining process, and belongs to the technical field of metal material surface treatment. According to the aluminum profile machining process, stepped current arcing oxidation and double hole sealing treatment are adopted, and the two innovative points of process steps are connected with each other and have a synergistic effect. The stepped current composite anodic oxidation provides a substrate with an optimized structure and rich active points for double hole sealing, and the double hole sealing furthest consolidates and exerts the corrosion resistance of the composite oxide film. The process conditions are mild, used chemicals are environment-friendly, the addition amount of rare earth elements is small, but the effect is remarkable, and the method is particularly suitable for the 6-series aluminum alloy profile with strict requirements for strength and corrosion resistance.

The invention discloses a ternary alloy hydrogen production electrode which is prepared by the following steps: 1) carrying out electrochemical anodic oxidation treatment on a Ni-Cr-Fe ternary alloy foil to obtain an initial state foil; 2) carrying out carbonitriding treatment on the initial-state foil to obtain an intermediate-state foil; and 3) carrying out CV activation treatment on the intermediate-state foil to obtain the ternary alloy hydrogen production electrode. According to the preparation method, after the foil is subjected to carbon-boron co-permeation treatment and CV activation treatment, the obtained alloy foil has excellent performance in the subsequent electrocatalytic water oxidation process, and B atoms can accelerate electrochemical self-optimization to generate more high-activity Ni < 3 + > and Fe < 3 + > catalytic sites; c atoms can stabilize related active sites through metal carbon bonds, efficient and stable water electrolysis oxygen evolution catalytic performance can be achieved through the synergistic effect of the two, and the catalyst is suitable for being used and popularized in the field of catalysis.

The application relates to the technical field of sodium ion batteries, and particularly discloses a negative electrode sheet based on an anodic aluminum foil and a preparation method thereof, which comprises: a honeycomb-shaped porous current collector including a pure aluminum foil layer and a nano-porous aluminum oxide layer, wherein the nano-porous aluminum oxide layer is obtained by sequentially performing anodic oxidation and acid corrosion on the aluminum foil current collector; a first coating layer, which is a high-specific-energy phosphorus-doped material and is embedded in the porous structure of the nano-porous aluminum oxide layer; and a second coating layer, which is made of hard carbon material and is coated on the first coating layer. In the application, the aluminum foil is treated by anodic oxidation to obtain a honeycomb-shaped nano-porous aluminum oxide layer, and then the thickness and pore size of the oxide layer are regulated by acid corrosion treatment, so that the surface roughness of the aluminum foil is improved, the adhesion between the electrode sheet and the current collector is improved, and the volume expansion of the phosphorus-based material is inhibited through the embedding design of the first coating layer, thereby improving the cycle stability and safety of the battery.

The invention discloses a preparation method of an easy-to-demold concrete test mold with super-hydrophobic and super-smooth inner wall, and belongs to the field of concrete test molds. The method comprises the following steps of: a, spin-coating negative photoresist, and obtaining a substrate with an inverted trapezoidal micron structure on the inner wall in an ultraviolet lithography manner; b, depositing a metal layer through vacuum evaporation; c, removing the metal layer on the upper surface of the inverted trapezoidal micron structure on the inner wall of the substrate; d, obtaining a micro-nano hierarchical structure on the metal layer; e, spin-coating molten wax, and after cooling, filling the micron-sized pores with solid wax; f, depositing aluminum through vacuum evaporation, and performing anodic oxidation to obtain a porous metal aluminum surface; g, solid wax is discharged, lubricating oil is injected, the whole pores are filled with the lubricating oil, and the super-hydrophobic and super-smooth surface is obtained; and h, splicing the base to obtain the easy-to-demould concrete test mould with super-hydrophobic and super-smooth performance. The cohesiveness of the concrete and the inner wall of the test mold is reduced, so that the concrete is easily separated from the inner wall of the concrete test mold.

The application discloses a continuous anodic oxidation production line for curtain wall and a preparation method thereof, wherein the production line is provided with a feeding mechanism, a grinding plate mechanism, a first pressure water washing mechanism, an alkali immersion mechanism, a second pressure water washing mechanism, an oxidation mechanism, a first detection mechanism, a third pressure water washing mechanism, an electrolytic coloring mechanism, a fourth pressure water washing mechanism, a hole sealing machine, a second detection mechanism, a film coating machine and a discharging mechanism; after unwinding the plate material, the plate material is input through the feeding mechanism and then sequentially passes through the above mechanisms to perform first pressure water washing, alkali washing, second pressure water washing, oxidation, first detection, third pressure water washing, electrolytic coloring, fourth pressure water washing, hole sealing, second detection and film coating on the plate material, so as to obtain the curtain wall; and after obtaining the curtain wall, the curtain wall is output through the discharging mechanism, continuous production of the curtain wall is realized, and the curtain wall does not need to be stopped for transfer and plate material carrying; the overall degree of automation is high, and the processing efficiency is high.

The invention discloses an aluminum profile surface oxidation treatment process, and relates to the technical field of aluminum profile surface treatment.The aluminum profile surface oxidation treatment process comprises the steps that an aluminum profile is sequentially subjected to organic solvent degreasing, alkali washing and acid pickling bright dipping, and deionized water cleaning is conducted after each step of operation; taking the pretreated aluminum profile as an anode, placing the aluminum profile in an electrolyte, and carrying out anodic oxidation treatment to obtain a nano-porous aluminum oxide film loaded with functional components; the preparation method comprises the following steps: immersing a nano porous alumina film loaded with functional components into a hole sealing liquid, carrying out permeation crosslinking, realizing directional arrangement of functional groups in a weak electric field, and finally, carrying out oven curing to obtain the intelligent response type multifunctional composite oxide film. The hole sealing liquid contains a difunctional organosilane hole sealing agent. According to the prepared composite oxide film, the hardness and wear resistance of the aluminum profile are remarkably improved, the intelligent characteristics of light response self-cleaning and pH response antibacterial are given to the aluminum profile, the composite oxide film can adapt to complex and changeable application environments, the service life is prolonged, and the maintenance cost is reduced.

The present invention relates to a high-voltage anodization method and an aluminum substrate anodized thereby and, more specifically, to a high-voltage anodization method using a phosphoric acid solution as an electrolyte, which enables stable anodization while applying a high voltage without causing a burning phenomenon on the surface of the aluminum substrate, and an aluminum substrate anodized thereby. The high-voltage anodization method according to the present invention improves a voltage ramping process in anodizing using phosphoric acid so that a high voltage of 190 V or higher can be applied while preventing surface burning of the aluminum substrate, thereby enabling stable anodization of the aluminum substrate. In addition, an anodized membrane manufactured using the aluminum substrate produced by the high-voltage anodization method of the present invention can stably form a hexagonal nanostructure having large pores of 150 nm or greater.