3319results about "Anodisation" 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.

A production device for high-quality corrosion-resistant steel core aluminum stranded wire, comprising a frame stranding machine (1), an electrolyte tank 1 (2), a roller (3) and an electrolyte tank 2 (4) arranged in sequence from top to bottom. The frame stranding machine (1) is arranged vertically to strand an aluminum conductor (6) on a steel core (5). The electrolyte tank 1 (2) contains a cylindrical electrode 1 (7) and an electrolyte. The cylindrical electrode 1 (7) has openings at both ends and is placed vertically with the steel core (5) as an axis. The stranding part is located in the cylindrical electrode 1 (7). The production device for high-quality corrosion-resistant steel core aluminum stranded wire of the present invention places the frame stranding machine vertically and surrounds the stranding part with the cylindrical electrode 1, so that the distance between the steel core and the aluminum conductor and the cylindrical electrode 1 at the stranding part is roughly equal, and the steel core and the aluminum conductor at the stranding part are immersed in the electrolyte at the same depth, so that the ceramic film layer formed on the surface of the steel core and the aluminum conductor is more uniform, which can greatly improve the overall corrosion resistance of the steel core aluminum stranded wire.

Rods, pipes and internal cavities that include a coated surface are described. The rod or pipe can include an alloy layer on an external surface, an internal surface or both. The alloy layer can include molybdenum or tungsten and at least one element or at least one compound comprising one or more of nickel, cobalt, chromium, tin, phosphorous, iron, magnesium or boron.

The invention relates to the technical field of alloy pouring processes, in particular to a magnesium alloy heterogeneous flow overall coordination pouring process which comprises the steps of conducting pouring numerical simulation through simulation software, optimizing pouring design and determining a composite flow guide structure, a mold temperature control scheme and an alloy component regulation and control strategy. Magnesium alloy smelting and refining are conducted; preheating the mold by using an intelligent temperature control system; during the period, the intelligent temperature control system monitors and adjusts the temperature of the mold, and the online alloy adding system and the impurity adsorption filtering device keep the components of the melt uniform and pure; and after pouring is completed, controlling the mold temperature according to a preset cooling curve to slowly and uniformly solidify the melt. The design of the bionic branch-shaped flow dividing structure, the dynamic adjustable flow guide plate and the like reduces casting defects, and the casting forming quality is improved. And on-line alloy adding and impurity adsorption filtering ensure that melt components are stable, and the casting performance is improved.

The invention relates to an optical fiber hydrogen sensor based on a silver film-nanowire hole array structure and a preparation method thereof in the field of photochemical sensors. The optical fiber hydrogen sensor comprises a multimode optical fiber, and a sensing area is formed on the multimode optical fiber; the sensing area is formed by stripping a coating layer with a preset length from the multimode optical fiber, thinning the optical fiber in the area, plating a silver film on the surface of the thinned optical fiber, and adsorbing a nanowire hole array structure which is sequentially and vertically arranged on the surface of the silver film in a liquid level self-assembly manner; the nanowire hole array is of a metal-medium-metal (MIM) structure, a gold-palladium nanowire array is arranged at the bottom, an intermediate medium layer is made of aluminum oxide, and a silver film with a hole array in any shape is arranged at the top. When light is transmitted to a sensing area from a fiber core of the multimode optical fiber, the light and a metal silver film can excite a surface plasmon resonance (SPR) effect, meanwhile, an MIM structure formed by a gold-palladium nanowire, an aluminum oxide dielectric layer and a porous silver film serves as an optical coupling antenna through a local surface plasmon resonance (LSPR) effect at the edge of a top hole, and the optical coupling antenna is used for transmitting the light to the sensing area. Light energy is efficiently converged and excited in an extremely bound gap plasmon (Gap Plasmon) in an aluminum oxide dielectric layer, so that far-unconventional electromagnetic field enhancement is generated in a sensing core area, and the sensitivity of the sensor is greatly improved.

The invention belongs to the technical field of metal material surface treatment, and provides a self-hole-sealing and self-healing aluminum alloy corrosion-resistant coating and a preparation method thereof. The aluminum alloy is subjected to micro-arc oxidation treatment in the phosphate electrolyte containing cerium ions, the self-hole-sealing and self-healing micro-arc oxidation coating is prepared on the surface of the aluminum alloy, and the technical problems that in the prior art, an aluminum alloy micro-arc oxidation coating is poor in hole sealing effect and complex in process are solved. The beneficial effects of providing long-term active corrosion protection for the aluminum alloy and simplifying the process are achieved.

The invention discloses a heat insulation aluminum profile and a preparation method thereof, and belongs to the technical field of aluminum profile preparation. The heat insulation coating is electrostatically sprayed on the surface of the aluminum profile, the coating takes epoxy resin as a matrix, the aluminum profile is separated from the external environment, and the corrosion resistance and the heat insulation performance of the aluminum profile are improved; compared with common nano ATO, the prepared modified nano ATO has better compatibility with an epoxy resin matrix, the agglomeration phenomenon is obviously reduced, and the heat insulation performance of the coating can be greatly enhanced; the prepared modifier can significantly enhance the flame retardance and heat resistance of the coating, can promote curing of epoxy resin, is grafted on nano ATO, and is stable in performance and not prone to falling off; therefore, the prepared aluminum profile is excellent in heat insulation property and corrosion resistance, the coating sprayed on the surface of the aluminum profile has stable and efficient flame retardance and heat resistance, and the aluminum profile has important application value in the technical field of aluminum profile preparation.

The invention relates to the technical field of motor rotors, and discloses a motor rotor and a machining method thereof.The method comprises the steps that hot forging is conducted on an alloy steel base material based on the preset forging and pressing temperature, and multi-layer gradient cutting is conducted on a rotor initial blank; the method comprises the following steps: performing composite deposition treatment on a cylindrical blank based on a magnetic material, placing the magnetic composite blank in a vacuum environment for dynamic heat treatment, performing dynamic balance finishing on the heat treatment blank based on a preset alloy, performing surface strengthening treatment on a balance rotor in a nitrogen atmosphere, and coating the balance rotor subjected to surface strengthening with a preset coating, the motor rotor with the optimized surface is obtained; and dynamic balance trimming is combined with preset alloy characteristics for microstructure regulation and control, and it is ensured that the rotor has excellent operation stability in a high-rotation-speed environment. And finally, surface strengthening treatment is carried out in a nitrogen atmosphere, and a functional coating is used for covering, so that the wear resistance and corrosion resistance of the surface layer are remarkably improved, and the requirements of a motor system on a high-performance rotor under complex working conditions are met.

The invention relates to the technical field of high-corrosion-resistance stainless steel pipe processing, and discloses a high-corrosion-resistance high-molybdenum stainless steel pipe processing technology based on gradient carbide design, which comprises the following steps: applying an axial gradient magnetic field in a stainless steel pipe rolling process, and combining with dynamic strain rate matching rolling to promote molybdenum atom grain boundary migration and inhibit carbide coarsening, so as to obtain a high-molybdenum-resistance stainless steel pipe. Nano carbide smaller than or equal to 50 nm is formed on the surface layer, and submicron carbide of 200-500 nm is formed on the core part; after rolling, micro-arc oxidation and phosphonic acid group silane dipping are immediately carried out to form a self-repairing passivation film; and finally, an alternating magnetic field and pulse current are adopted for cooperative annealing, and a grain boundary molybdenum-poor region and residual stress are eliminated. Through magnetic field-chemical-thermal multi-field coupling, the material has erosion corrosion resistance of a gradient carbide structure, dynamic passive film self-repairing and low-temperature high toughness, and is suitable for long-acting protection of deep sea oil and gas pipelines.

The invention relates to the technical field of anodic oxidation, in particular to an aluminum alloy anodic oxidation process parameter control method and system based on environmental protection, and the method comprises the following steps: based on the anodic oxidation requirements of an aluminum alloy, including the thickness of an oxidation layer, the adjustment of anodic oxidation electrolysis voltage and current, and the matching of the physical characteristics and anodic oxidation requirements of the aluminum alloy; and anodic oxidation parameter optimization information is obtained. According to the method, through dynamic adjustment of electrolysis parameters in the aluminum alloy anodic oxidation process, electric energy consumption is reduced, the temperature of the electrolyte is dynamically adjusted, the oxidation rate is increased, efficient utilization of electrolysis materials is achieved, the utilization rate of the electrolysis materials is optimized, and resource waste and environmental pollution are reduced; by collecting and analyzing energy consumption data and processing efficiency data and regularly evaluating the energy efficiency ratio of the anodic oxidation electrolysis equipment, the equipment maintenance period is optimized, it is ensured that the equipment runs in the optimal state for a long time, energy consumption in the anodic oxidation process is reduced, and continuous stability and high efficiency of the production process are ensured.

The invention belongs to the technical field of metal material surface oxidation, and particularly relates to a gradient micro-arc oxidation preparation system and method. The system comprises a pretreatment device, an electrolyte batching device and a micro-arc oxidation device, and the pretreatment device is used for removing oil stains and oxide layers on the surfaces of workpieces and mechanically polishing the surfaces of the workpieces; the electrolyte batching device is used for mixing and preparing electrolyte used for workpiece micro-arc oxidation; the micro-arc oxidation device comprises a reactor containing electrolyte, and a workpiece is subjected to micro-arc oxidation in the reactor; the pretreatment device, the electrolyte batching device and the micro-arc oxidation device are sequentially connected according to an industrial production sequence. In addition, the invention further discloses a gradient micro-arc oxidation preparation method. The uniform and smooth color gradient effect on the surface of the metal material is achieved by accurately regulating and controlling key parameters such as electrolyte components, voltage, current density, oxidation time and temperature in the oxidation process.

The invention discloses a surface passivating inert metal, a plating solution thereof and a passivating method, and belongs to the technical field of inert metal surface treatment. The plating solution comprises sulfydryl silane, amino silane, acid, deionized water and absolute ethyl alcohol. And the inert metal subjected to surface pretreatment is put into a plating solution to be subjected to electrolytic treatment and dipping treatment correspondingly, and then the inert metal with the silane composite passive film on the surface is obtained through stepped curing treatment. The plating solution is simple in component, stable in system and low in price; the preparation method of the plating solution is simple and easy to operate; the passivating treatment method is short in technological process and high in preparation efficiency; the prepared silane composite passivation film is uniform and compact in structure, colorless and transparent, can keep good gloss of the inert metal surface, and has excellent properties such as oxidation resistance, corrosion resistance and insulation.

A titanium non-stick pan including a pan body. A base material of the pan body being a metal composite plate with a multi-layer composite structure that includes a base metal layer and a titanium metal layer arranged in a stack. The base metal layer is bonded to the titanium metal layer by metallurgical bonding. The titanium metal layer forms a concave-convex structure of a uniform thickness. The concave-convex structure includes a plurality of interconnected concave-convex unit cells, each of which includes first convex parts and a concave part enclosed by the first convex parts. The concave part includes a second convex part disposed in the concave part. The second convex part has a top lower than each first convex part, and a surface of the titanium metal layer at the concave-convex structure forms an oxidation layer with a thickness between 8 μm and 40 μm.

The invention discloses a biomedical magnesium alloy and a preparation method thereof, and belongs to the technical field of magnesium alloy materials. The biomedical magnesium alloy comprises a magnesium alloy matrix, a micro-arc oxidation film layer is arranged on the surface of the magnesium alloy matrix, and a PLGA-HA composite coating is arranged on the surface of the micro-arc oxidation film layer. The micro-arc oxidation film serves as a magnesium alloy surface modification base layer, provides a good adhesion interface for the composite coating and enhances the corrosion resistance of a base body. By introducing the PLGA-HA composite coating on the micro-arc oxidation film on the surface of the magnesium alloy, the PLGA coats and stabilizes HA particles, so that the HA particles are distributed more uniformly, meanwhile, the bonding strength of the HA and the micro-arc oxidation film is improved, the stripping phenomenon of the coating is reduced, and the long-term stability of the coating is ensured. In addition, the composite coating further fills up pores and cracks of the micro-arc oxidation film, and the overall compactness and corrosion resistance are remarkably improved, so that the degradation rate of the magnesium alloy is effectively delayed.

The invention provides a preparation method and application of a corrosion-resistant micro-arc oxidation film layer. The method comprises the following steps: pretreating valve metal and / or an alloy matrix thereof; and the pretreated valve metal and / or an alloy matrix of the valve metal are / is immersed in electrolyte of a bipolar superaudio frequency pulse micro-arc oxidation system, micro-arc oxidation parameters are set as follows: the voltage ranges from-50 V to 600 V, the power output pulse frequency ranges from 1 kHz to 150 kHz, the duty ratio ranges from 0.1 to 0.5, micro-arc oxidation is conducted for a preset duration, and the metal matrix with the corrosion-resistant micro-arc oxidation film layer is obtained. According to the method, the high-corrosion-resistance micro-arc oxidation film layer can be obtained.

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 belongs to the technical field of biological material surface modification, and discloses a medical titanium alloy surface bionic multifunctional composite coating and a preparation method thereof. According to the method, the medical titanium alloy is sequentially subjected to micro-arc oxidation and anodic oxidation, and then the bionic multifunctional composite coating on the surface of the medical titanium alloy is prepared. The purpose of micro-arc oxidation is to prepare a micron porous coating on the surface of the medical titanium alloy. According to anodic oxidation, a series of nano-coatings are synthesized on the surface of the micro-arc oxidation coating, the nano-coatings can be composed of discontinuous cauliflower-shaped nano-particles or can be of a continuous film-forming cauliflower-shaped structure, and the thickness of the nano-coatings can be from the nanometer level to the micrometer level. According to the coating, the biological function is further improved through the nano coating while the mechanical anchoring effect of the micron porous structure on new bone tissue is maintained. Even if the coating is damaged by external force, the high binding force of the coating does not cause the failure of the coating, and the coating also has good wear resistance and corrosion resistance.

The invention provides a biological magnesium alloy micro-arc oxidation coating supercritical hole sealing method based on a thermodynamic sedimentary phase diagram, which comprises the following steps: establishing deposition-dissolution balance of metal ion phosphide and hydroxide of a phosphate conversion film in a supercritical carbon dioxide environment at different pH values to obtain the thermodynamic sedimentary phase diagram; selecting a NaH2PO4 solution according to a thermodynamic sedimentary phase diagram, and adding NaHCO3 to obtain a hole sealing solution; the hole sealing solution is injected into a reaction kettle to be heated, and then a refrigerator is started to convert generated carbon dioxide gas into supercritical carbon dioxide; and the biological magnesium alloy subjected to micro-arc oxidation is placed in the hole sealing solution in the reaction kettle to be pressurized, and holes of the micro-arc oxidation coating on the surface of the biological magnesium alloy are sealed. The invention provides a supercritical hole sealing method for a biological magnesium alloy micro-arc oxidation coating based on a thermodynamic sedimentary phase diagram. And the hole sealing effect is good.

The invention discloses an electric engine assembly integral forming process based on precision integral casting, which comprises the following steps: designing a split type precision mold through computer aided design software, and carrying out nitriding treatment to improve the performance; selecting a specific aluminum alloy raw material, performing vacuum induction melting and refining, and injecting the aluminum alloy raw material into a preheated and sprayed mold cavity in a low-pressure casting manner; and demolding after air cooling and water cooling are combined, then after-treatment procedures such as deburring and heat treatment are conducted, and finally detection and assembly are conducted. A conformal cooling water channel design and an ultrasonic-assisted smelting technology are adopted in the process innovation, and the casting process is monitored in real time. According to the process, manufacturing procedures are reduced, compared with a traditional mode, the production efficiency is improved by 30%-50%, the cost is reduced by 20%-30%, the assembling problem is effectively avoided, the sealing performance and reliability of the electric engine are improved, the service life of the electric engine is prolonged, high integration is achieved, and the modern industrial requirement is met.

The invention relates to the technical field of material surface treatment, and discloses a preparation method of a microcapsule-based self-repairing coating, the self-repairing coating and a light metal alloy. The preparation method of the self-repairing coating comprises the following steps: adding microcapsules into a mixed solution of epoxy resin and a curing agent, and stirring to obtain a coating; the surface of a base body is coated with the paint, and a self-repairing coating is obtained; the preparation method of the microcapsule comprises the following steps: preparing a prepolymer solution which comprises the following components: urea and formaldehyde; preparing an oil-in-water emulsion, namely adding tung oil into a surfactant solution, and emulsifying to obtain the oil-in-water emulsion; and mixing the prepolymer solution and the oil-in-water emulsion to obtain the microcapsule. When the self-repairing coating is damaged, the microcapsules at the damaged part are broken, the core material tung oil is released, the core material flows in the coating and fills the damaged part, and the damaged part is repaired, so that the automatic repairing effect is achieved, the corrosion speed of an alloy matrix is slowed down, and the corrosion resistance is improved.

The invention discloses a coating with in-situ plugging and active protection functions as well as a preparation method and application thereof, and belongs to the technical field of metal material surface treatment. An innovative electrolyte design scheme is provided, the commercial 5083 aluminum alloy is subjected to micro-arc oxidation in a phosphate system containing specific cerium salt and a complexing agent, film layer growth and in-situ chemical blocking of micropores are completed in one step, the process is simple, and the obtained coating has excellent blocking firmness and corrosion resistance, has an active protection function and is suitable for large-scale industrial production. And a new solution is provided for improving the durability of the 5083 aluminum alloy in a harsh marine environment.

The invention discloses an integrated preparation method of a large-thickness high-density electrical insulation-corrosion-resistant ceramic coating on the surface of a heat dissipation substrate for a high-power device, and relates to the technical field of surface treatment of aluminum alloys and composite materials thereof. The method comprises the following steps: placing a pretreated substrate as an anode and a stainless steel plate as a cathode in a basic arc suppression type electrolyte, and performing low-temperature soft plasma electrolytic oxidation on the surface of the pretreated substrate by using an asymmetric bipolar pulse micro-arc oxidation technology to grow a large-thickness high-density ceramic layer in situ; specifically, low-temperature soft spark discharge is induced by inserting additional negative pulse voltage, the plasma temperature and energy are stabilized, spark discharge is uniform, and the density is increased by an order of magnitude, so that continuous bombardment with no damage to the surface flatness as the plasma intensity upper limit is carried out on a passive film on the surface of a substrate; and the defects such as pores and cracks are continuously healed and repaired, and the densification of the coating is promoted, so that the aluminum oxide coating with large thickness, high density, high electrical insulation and corrosion resistance is obtained.

The invention relates to the technical field of metal-based composite materials, and discloses a preparation method of a silicon carbide reinforced aluminum-based composite material for electronic packaging, the method that pre-oxidation is conducted on the surfaces of silicon carbide particles first and then vacuum micro-evaporation titanium plating is conducted is adopted, the wettability with an Al matrix is obviously improved, generation of an interface reaction brittle product Al4C3 is inhibited, and the performance of the silicon carbide reinforced aluminum-based composite material is improved. Defects such as gaps in the composite material are reduced, and the mechanical property of the composite material is improved; the silicon carbide reinforced aluminum-based composite material is prepared by adopting a non-pressure infiltration method, so that the production time is obviously shortened, infiltration can be successful by taking a small amount of time, and the process is stable; the interface phase TiC / Ti5Si3-Al coating not only improves the electrical conductivity and thermal conductivity of the silicon carbide powder, but also enhances the adhesive force of the silicon carbide powder and an aluminum base; al2O3 is gradually adsorbed and deposited on the surface of the material by adopting a micro-arc oxidation process, so that the corrosion resistance of the aluminum silicon carbide composite material is enhanced, and the requirements of a contemporary packaging material on high heat dissipation and corrosion resistance can be met.

The invention discloses a selective exchange film sealing concentrated solution based on layered double hydroxides. The selective exchange film sealing concentrated solution comprises divalent metal ions, a corrosion inhibitor, a pH buffering agent and a wetting agent. The invention also discloses a preparation method and application of the compound. The closed thin film obtained based on the layered double-metal hydroxide selective exchange thin film closed concentrated solution has excellent compactness, double protection on the aluminum alloy anode oxide film is achieved through selective exchange of interlayer anions of the closed thin film, and the corrosion resistance of the aluminum alloy anode oxide film is improved and enhanced; and on the premise that the aluminum alloy anode oxide film is protected from being corroded, the alkali resistance of the aluminum alloy anode oxide film is improved and enhanced, and the color fixing performance of the dye is achieved.

The invention discloses a method for in-situ growth of a large-thickness high temperature resistance / heat insulation / radiation heat dissipation integrated thermal protection coating with a multistage gradient hole structure on the surface of thin-wall metal, and relates to the technical field of thermal protection coatings. The invention aims to solve the problems of how to finely regulate and control the pore size, pore content and pore distribution in the coating and how to improve the heat insulation performance and radiation heat dissipation performance of the coating. According to the method, electric parameters are regulated and controlled on the thin-wall metal surface in an electrolyte system in a multi-step grading mode, and in-situ preparation of the large-thickness high-temperature-resistant / heat-insulation / radiation heat dissipation integrated thermal protection coating with the multi-stage gradient hole structure is achieved. According to the invention, the multi-stage gradient pore structure coating is innovatively constructed by adopting multi-step hierarchical electrical parameters, so that the internal pore characteristics of the coating can be effectively controlled, the integrated improvement of heat insulation, radiation heat dissipation and high temperature resistance can be realized, and a new way is opened up for the in-situ preparation of a large-thickness and high-performance thermal protection coating.

The invention relates to the technical field of lamps, in particular to a plating forming process of a lamp. The problems that the interface bonding force of the coating and the matrix is insufficient and the corrosion resistance of the coating is poor are solved. According to the method, micro-arc oxidation is carried out in the pretreatment stage, a compact Al-Si-O ceramic layer is generated on the surface of a high-aluminum matrix in situ, and in combination with deep diffusion of plasma siliconizing, a transition area with gradient Si distribution is constructed; the pitting corrosion resistance of the coating is optimized through the component gradient design of the inner-layer coating, the middle-layer coating and the outer-layer coating; the surface of the coating lamp is subjected to checkerboard scanning by using short pulse laser, so that the porosity and microdefects of the surface of the coating are improved, and the corrosion resistance of the coating is enhanced; a uniform oxynitride passivation film is generated on the surface of the coating in situ through low-temperature plasma post-oxidation-nitridation treatment, the defect that a film layer is easy to strip in a traditional passivation process is avoided, and the corrosion resistance of the material in long-term service can be stably maintained.

The embodiment of the invention provides a foldable structural member, a preparation method thereof and foldable electronic equipment. The foldable structural member comprises a first middle frame and a second middle frame, a first protection layer and an injection molding layer are sequentially arranged in corresponding areas of the first middle frame and the second middle frame in a stacked mode, and an anti-corrosion layer is arranged between the injection molding layer and the first protection layer. According to the special anti-corrosion design, feasibility is provided for the magnesium alloy to serve as a metal body of a rotating open area in the foldable structural part, and therefore the structural part can be used for providing lighter and thinner foldable electronic equipment.

The invention relates to the technical field of electrolytic aluminum foil preparation, in particular to a surface treatment method for sintered aluminum foil. The surface treatment method of the sintered aluminum foil comprises the following steps of (1) aluminum foil surface treatment, (2) mixed slurry preparation, (3) slurry coated aluminum foil preparation, (4) rolling, (5) sintering and (6) formation. According to the surface treatment method of the sintered aluminum foil, uneven thickness and capacity of the aluminum foil caused by agglomeration of the aluminum powder are avoided, and the problems that in the rolling and sintering process of traditional aluminum foil, due to lamination of the aluminum foil, the aluminum foil and the aluminum foil are sintered together, interlayer adhesion is caused, the aluminum powder layer falls off, and the service life of the aluminum foil is prolonged are solved. And the capacity is reduced.

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 belongs to the technical field of photoelectric catalytic materials, and particularly relates to an experimental method for rapidly preparing a copper oxide nanowire and application of the copper oxide nanowire. The preparation method comprises the following steps: adopting a copper net as a substrate, rapidly preparing a Cu (OH) 2 nanowire array on the surface of the copper net through a constant-voltage anodic oxidation method, rapidly dehydrating Cu (OH) 2 through high-temperature heat treatment, and preparing the CuxO nanowire array in situ. Compared with the existing P-type semiconductor material, the material has a wider visible light absorption range as a photoelectric catalytic material, and has better performance in the fields of hydrogen production through photoelectric water decomposition and photo-assisted Li-CO2 batteries. The problem of low light energy utilization rate is solved, and the copper oxide nanowire material is beneficial to separation of photo-induced electrons and hole pairs, so that the charge-discharge voltage close to a theoretical value can be measured when the copper oxide nanowire material is used as the positive electrode material of the Li-CO2 battery.