1110results about "Anodisation" patented technology

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 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 a rare earth element doped stainless steel oxygen evolution electrode and a preparation method thereof, and belongs to the technical field of electrode preparation. The preparation method of the stainless steel oxygen evolution electrode comprises the steps that stainless steel with impurities removed serves as an anode and is placed in an alkaline solution with the concentration being 7-12 mol / L, cyclic voltammetry is adopted, stainless steel treated through cyclic voltammetry is obtained, and the potential window is-0.3 V to 1.5 V; the stainless steel is placed in an alkaline solution with the concentration being 1-2 mol / L and serves as an anode for electrolysis, and anodic oxidation stainless steel is obtained; the anodic oxidation stainless steel is placed in a cerium ion solution, a cyclic voltammetry method is adopted, the stainless steel serves as an anode to be treated, and a stainless steel oxygen evolution electrode is obtained through electro-deposition; wherein the potential window is-1.5 V to 1.0 V (+ / -0.5 V). The preparation method is simple, the cost is low, large-scale preparation is easy, long-time, high-temperature and other complex preparation processes are not needed, and when the electrode is used as an electrode for electrolyzing oxygen evolution in water, the electrode has excellent catalytic activity and shows huge application prospects in large-scale industrial hydrogen production through water electrolysis.

The invention relates to the field of preparation of lubricating materials, in particular to a preparation method of composite phase change lubricating gel based on temperature-friction force synergistic response. The lubricating gel adopts a sandwich layered structure; the bottom layer is a porous ceramic layer formed by micro-arc oxidation, is filled with a disulfide bond dynamic network polymer and is anchored on a metal substrate; the middle layer comprises a microencapsulated phase change material which is dispersed in a polyurethane network containing dynamic disulfide bonds and is wetted with ionic liquid; the surface layer is an epoxy resin coating rich in boron nitride nanosheets, and a rapid heat conduction channel is constructed. Compared with the prior art, the lubricating state can be automatically adjusted in the friction process without external energy input, and the method has the advantages of being sensitive in multi-field coupling response, capable of achieving automatic antifriction protection, high in extreme working condition adaptability and the like.

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 application provides an aluminum alloy, which comprises the following components in percentage by mass: Zn 4.0-5.0%, Mg 1.2-1.8%, Cu 0.1-0.3%, Zr 0.08-0.12%, Ti 0.02-0.06%, Fe less than or equal to 0.25%, and the balance of Al. The alloy elements containing Zn 4.0-5.0%, Mg 1.2-1.8%, Cu 0.1-0.3%, Zr 0.08-0.12%, Ti 0.02-0.06% and Fe less than or equal to 0.25% are added into a smelting furnace together with pure aluminum, smelted at 700-750 DEG C to form a melt, refined by blowing in inert gas or adding a refining agent, and the gas and inclusions are removed. The application utilizes the shearing force generated by the different rotating speeds of the upper and lower rollers of a differential rolling mill to break the coarse structure, refine the grains, and increase the dislocation density. The aluminum alloy is rolled at 480-500 DEG C to reduce the deformation resistance, promote dynamic recrystallization, maintain the processing performance, and further enhance the performance by 60-70% of the total deformation. After rolling, the aluminum alloy is subjected to multi-directional forging, the strain direction is changed multiple times, the grains are broken, the structure is homogenized, and anisotropy is eliminated, so that the comprehensive performance and application range of the aluminum alloy profile are improved. The problem that the structure cannot be refined and the dislocation density cannot be increased during the rolling process is solved.

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.

To provide an alloy member which is excellent in adhesion to a resin film.SOLUTION: An alloy member 200 includes a base material 101 containing magnesium and lithium, and a corrosion prevention film 102 which is provided on the base material 101, and contains magnesium, phosphorus and fluorine. The corrosion prevention film 102 has at least one first recess 111 on a surface opposite to the base material 101, and the surface of the first recess has at least one second recess 112 smaller than the first recess.SELECTED DRAWING: Figure 8

The invention relates to the technical field of surface strengthening treatment and coating preparation, in particular to a micro-arc oxidation electrolyte, a preparation method of the micro-arc oxidation electrolyte and a preparation method of an oxide ceramic coating on the surface of a magnesium-copper dissimilar metal material component. The invention provides a micro-arc oxidation electrolyte. The micro-arc oxidation electrolyte comprises a main film-forming agent, an arcing aid, a pH regulator, a corrosion inhibitor and water, the main film-forming agent comprises ammonium fluozirconate and / or potassium fluozirconate; the arcing aid comprises one or more of disodium hydrogen phosphate, sodium dihydrogen phosphate, ammonium dihydrogen phosphate and diammonium hydrogen phosphate; the corrosion inhibitor comprises one or more of hexamethylenetetramine, ammonium bifluoride and triethanolamine. The micro-arc oxidation electrolyte breaks through the problem that valve metal and non-valve metal cannot be subjected to arc discharge at the same time for micro-arc oxidation treatment in the micro-arc oxidation process.

The invention discloses an aluminum alloy hard oxidation process, and relates to the technical field of aluminum alloy part surface treatment, the aluminum alloy hard oxidation process comprises the following steps: S1, pretreatment: oil removal, alkali corrosion treatment and acid pickling neutralization; s2, hard oxidation is conducted, specifically, the pretreated workpiece is put into an oxidation tank with electrolyte and a stirring system to be subjected to stirring and oxidation treatment; and S3, post-treatment: cleaning with hot water, sealing with nickel acetate and drying in a drying oven. The process mainly comprises the following steps: carrying out pretreatment of oil removal by an organic solvent, alkali etching and acid pickling, combining sulfuric acid-citric acid-monopotassium phosphate composite electrolyte, pulsed power supply and gradient boosting oxidation, carrying out ultrasonic stirring and precise temperature control hard oxidation, and finally carrying out nickel acetate sealing aftertreatment. The four industrial problems of poor batch consistency of oxidation films of aluminum alloy workpieces, non-uniformity of complex workpieces, high energy consumption and poor compatibility to high alloy materials are thoroughly solved, and the oxidation film which is high in hardness, uniformity and corrosion resistance and saves energy is obtained.

The invention provides an electrolyte and a method for carrying out surface treatment on a base material by adopting the electrolyte. The electrolyte comprises the following components in percentage by mass: 6%-12% of an oxidizing agent; 3%-7% of an accelerant; 0.3%-6% of a corrosion inhibitor; 1%-6% of a complexing agent; 0.5%-8% of a wetting agent; and the balance of solvent. According to the method, the oxidizing agent, the accelerant, the corrosion inhibitor, the complexing agent, the wetting agent and other components are added into the electrolyte, so that the base material is subjected to nano corrosion and oxidation treatment in the same tank body, the corrosion precision is controllable, and the technological process is simplified. The same-tank treatment can save chemicals and tank equipment, and the electrolyte does not contain fluorine, chlorine and heavy metals, does not damage an aluminum oxide film, is safe in process, and reduces the wastewater treatment cost.

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 relates to the technical field of metal surface modification, in particular to a magnesium alloy anticorrosive coating and a preparation method and application thereof. The method comprises the following steps: firstly, performing micro-arc oxidation treatment on magnesium alloy to form a substrate layer; then, the micro-arc oxidation coating is subjected to hole sealing treatment through dendritic mesoporous silica loaded with a corrosion inhibitor, and the self-repairing function is given to the micro-arc oxidation coating; then, a layered self-similar coating composed of dendritic mesoporous silica loaded with a corrosion inhibitor and a resin matrix is constructed on the surface of the hole sealing layer, and interface bonding and compactness are enhanced; finally, dendritic mesoporous silica, cellulose nanocrystals, 1H, 1H, 2H, 2H-perfluorodecyl triethoxy silane, organic resin and tetraethoxy silane are introduced, and the super-hydrophobic coating with a micro-nano composite firm structure is formed on the surface layer. The obtained magnesium alloy anti-corrosion coating integrates the characteristics of long-acting corrosion resistance, super-hydrophobicity, self-repairing, high mechanical stability and the like, and the technical problems that a traditional magnesium alloy anti-corrosion coating is prone to physical or chemical damage and insufficient in durability are effectively solved.

The application discloses an amorphous silicon dioxide coating prepared based on micro-arc oxidation, a preparation method and application thereof, and belongs to the technical field of metal surface protection and silicon dioxide coating. In the application, a magnesium alloy, an aluminum alloy, a titanium alloy, a titanium-aluminum base and a nickel-aluminum base are used as anodes and are placed in a micro-arc oxidation tank, a hydrolytic solution of organic silicon is used as an electrolyte, and an amorphous silicon dioxide coating with a thickness of more than 100 mu m can be prepared within 20 minutes through a step-by-step step-incremental constant potential control means. The application utilizes the advantages of the micro-arc oxidation process and the sol-gel process, avoids their shortcomings, and realizes the superimposed synergistic effect of "1+1>2". The process steps of the application are simple, and the application is very suitable for full-automatic operation and processing in industry. The amorphous silicon dioxide coating with the required thickness, wear resistance, corrosion resistance, erosion resistance, oxidation resistance and other characteristics can be prepared by changing the electrolyte concentration, the micro-arc oxidation time and the electric control parameters, or through the conventional micro-arc oxidation constant voltage and constant current control means.

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 sintering process for an aluminum alloy plate of a flat thick film heater. An insulating glass medium is sintered to the surface of the aluminum alloy layer by layer through multiple times of printing and sintering, so that the final thickness of an insulating layer is larger than 200 microns, then the insulating standard indexes such as the withstand voltage of 4200 VDC and the like are achieved, the harsh requirement for ultrahigh high-voltage insulating safety is met, meanwhile, by means of a temperature control sintering furnace, an accurate temperature control curve is achieved, the temperature is slowly increased to 200-300 DEG C at the speed of 3-5 DEG C / min, and heat preservation is conducted; organic carriers can be fully and gently removed, and bubbles, pinholes or cracks caused by sudden volatilization are avoided.

The invention belongs to the technical field of metal substrates, and particularly relates to a graphene composite high-thermal-conductivity aluminum substrate, a preparation method and application. The graphene composite high-thermal-conductivity aluminum substrate comprises a conductive copper foil layer, a graphene composite high-thermal-conductivity layer and an aluminum substrate layer, the graphene composite high heat conduction layer comprises an upper layer, a middle layer and a lower layer, and the upper layer is connected with the conductive copper foil layer and is a heat conduction adhesive layer; the middle layer is a graphene composite sheet layer and is a film layer formed by compounding and hot-pressing graphene and a polymer; the lower layer is connected with the aluminum substrate layer and is a graphene modified aluminum oxide film layer; graphene in the graphene composite sheet layer is arranged in a horizontal orientation manner; graphene in the aluminum oxide film layer is arranged in a vertical orientation manner. According to the graphene composite high-thermal-conductivity aluminum substrate and the preparation method thereof, the graphene is used for constructing a longitudinal efficient heat conduction path and balancing stress, and the obtained graphene composite high-thermal-conductivity aluminum substrate has ultrahigh heat conduction performance, ultralow warping rate and good reliability and can be used in high-performance electronic devices and circuit boards.

The application provides a preparation process of a formation foil and the formation foil prepared by the preparation process, and the preparation process comprises a formation pretreatment, and the formation pretreatment comprises the following steps: S100: performing at least one first film forming treatment on an etching foil, and the first film forming treatment comprises sequentially performing a first boiling treatment, a first weak acid washing treatment and a heating treatment on the etching foil; and S200: performing a second film forming treatment on the etching foil, and the second film forming treatment comprises performing a second boiling treatment and a second weak acid washing treatment on the etching foil. The preparation process of the formation foil and the formation foil prepared by the preparation process can form a hydrated oxide film with a relatively large thickness, no feather-shaped outer layer and uniform crystal nucleus distribution in etching holes, can greatly improve the subsequent formation treatment efficiency, and can effectively reduce the energy consumption of the subsequent multi-stage formation treatment.

The invention relates to the technical field of brass materials, in particular to a high-strength and high-toughness brass material and a preparation method thereof.The preparation method comprises the steps that a porous oxide film layer is prefabricated on the surface of brass through plasma electrolytic oxidation, and an oxide film layer doped with double-bond silver-loaded graphene oxide is constructed on the surface of the brass; the preparation method comprises the following steps: firstly, preparing modified MXene, then preparing a photocurable hole sealing coating for hole sealing treatment, introducing double-bond silver-loaded graphene oxide and the modified MXene as fillers into the photocurable hole sealing coating, firstly performing sulfhydrylation on the MXene by using 3-mercaptopropyltriethoxysilane, and then grafting a double-bond-containing bis-benzimidazole ring derivative through light click to obtain the modified MXene; vinyl-terminated polyurethane is used as a cross-linking agent, o-phenyl phenoxyethyl acrylate, butyl acrylate, glycidyl methacrylate and octadecyl acrylate are compounded to serve as an acrylic monomer, a diluent and a solvent are introduced, a complex cross-linked network is constructed, and the service life of the brass material is prolonged.

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 utility model is suitable for the technical field of anodic oxidation tanks, and provides an anodic oxidation tank with a lifting structure, which comprises a sewage pool for collecting splashed electrolyte, the electrolysis tank is arranged in the sewage pool and is used for storing electrolyte; the electric guide rail is fixed on the outer wall of the electrolysis tank and is used for assisting in adjusting the position of the base material; the electric telescopic rod is arranged on the electric guide rail and is used for assisting in adjusting the height of the base material; the supporting rod is mounted on the electric telescopic rod through a connecting plate; and the hook is movably hung on the supporting rod and is used for supporting a base material. According to the anodic oxidation tank with the lifting structure, the height of a base material can be conveniently adjusted, the position of the base material can be adjusted after machining is completed, the base material can be conveniently kept in a hoisting state for flushing, electrolyte residues are reduced, and meanwhile sewage can be prevented from being mixed into electrolyte.

A preparation method of a 7B04 aluminum alloy surface in-situ synthesis microparticle enhanced thermal control function film layer can effectively improve the density of the film layer, meanwhile, the film layer is high in infrared emissivity and good in thermal control function, and comprises the steps that firstly, the 7B04 aluminum alloy surface, copper oxide and chromic oxide are pretreated, then a micro-arc oxidation electrolyte is prepared, and the 7B04 aluminum alloy surface is subjected to in-situ synthesis; the pretreated 7B04 aluminum alloy is placed in a stainless steel electrolytic cell of micro-arc oxidation equipment, then the micro-arc oxidation electrolyte is added into the stainless steel electrolytic cell, micro-arc oxidation treatment is conducted on the aluminum alloy through a micro-arc oxidation power source, the electrolyte is continuously stirred in the oxidation treatment process, and the aluminum alloy is subjected to micro-arc oxidation treatment; and finally, obtaining an in-situ synthesized microparticle reinforced thermal control functional film layer on the surface of the 7B04 aluminum alloy, washing the film layer with deionized water, and naturally airing the film layer to obtain the 7B04 aluminum alloy. The composition of the micro-arc oxidation electrolyte is designed, in the growth process of a micro-arc oxidation film layer, copper chromite black particles are synthesized in situ through chemical reaction, the particles and the film layer are metallurgically bonded, and the method has actual application and popularization value.

This invention provides a micro-arc oxidation electrolyte for magnesium alloy surface treatment and a method for preparing a micro-arc oxidation film. The micro-arc oxidation electrolyte is an aqueous solution containing sodium silicate, sodium hydroxide, potassium fluoride, and titanium boron carbon nitride conductive nanoparticles; or, an aqueous solution containing sodium silicate, potassium hydroxide, potassium fluoride, and titanium boron carbon nitride conductive nanoparticles. This invention also discloses a method for preparing a micro-arc oxidation film using the aforementioned micro-arc oxidation electrolyte for magnesium alloy surface treatment. The micro-arc oxidation electrolyte of this invention contains conductive ceramic nanoparticles—titanium boron carbon nitride conductive nanoparticles. Using these nanoparticles to perform a micro-arc oxidation reaction on the magnesium alloy surface can improve the microstructure of the micro-arc oxidation film, while simultaneously enhancing the corrosion resistance and wear resistance of the magnesium alloy after micro-arc oxidation treatment, significantly improving the surface protection capability of the magnesium alloy, and extending its service life.

The invention discloses a gradient composite reinforced anti-corrosion treatment method for a metal alloy guardrail, and belongs to the technical field of metal material surface treatment. The method comprises the following steps: carrying out ultrasonic cavitation micro-etching and electrochemical gradient activation pretreatment on the surface of a substrate; a metal ceramic composite layer containing a non-oxide ceramic reinforced phase is generated on the surface in situ through a micro-arc oxidation-chemical vapor deposition coupling process, and a component transition layer is formed with the assistance of vacuum gradient diffusion alloying treatment; and finally, coating an intelligent resin coating containing a corrosion inhibitor capsule and a corrosion indicator, and constructing a super-hydrophobic surface. By constructing a multi-layer composite protection system of the gradient diffusion layer / the metal ceramic layer / the intelligent coating / the super-hydrophobic layer, the anti-corrosion performance is remarkably improved, and the obtained guardrail has excellent bonding strength, wear resistance and long-acting anti-corrosion service life, has the intelligent functions of damage self-repairing and corrosion state visualization and is suitable for popularization and application. The method is especially suitable for harsh service environments.

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 utility model relates to the technical field of micro-arc oxidation reaction equipment, in particular to a micro-arc oxidation reaction device which comprises a support, a reaction cabin and a sealing cover, the reaction cabin is installed on the upper surface of the support, the sealing cover is installed on the upper surface of the reaction cabin, and a stirring mechanism is arranged on the upper surface of the sealing cover. A stirring part of the stirring mechanism is located in the reaction cabin, a jacking mechanism is arranged on the upper surface of the support, a moving part of the jacking mechanism is fixedly connected with the upper surface of the sealing cover, a distribution box is installed on the side surface of the support, and an assisting assembly is arranged on the upper surface of the support. According to the reaction device disclosed by the utility model, by arranging the assisting assembly and the locking assembly, when a user uses the equipment, the stirring structure of the equipment can leave right above the reaction device, so that the interference of the stirring structure on the taking operation when the user takes a workpiece is reduced, and the practicability of the reaction device is further improved.

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.

Disclosed in the present invention is a ceramization composite process applied to a metal substrate, comprising the following steps: 1) performing micro-arc oxidation treatment on a metal substrate; and 2) performing post-treatment on the metal substrate obtained in step 1). In the present invention, micro-arc oxidation treatment is performed on the metal substrate, which may result in micro-arc oxidation ceramic films of different colors on the surface of the metal substrate, the colors are uniform, and the appearance is beautiful; and then post-treatment is performed on the metal substrate to form protection for the micro-arc oxidation ceramic films and fill micro-pores of the micro-arc oxidation ceramic films, such that micro-film pores on the surface of the metal substrate undergone the micro-arc oxidation treatment are sealed, thereby greatly improving the stain resistance, weatherability, and surface hardness of the metal substrate, preventing film layer pulverization or cracking after the metal substrate is impacted, and solving the problems of poor stain resistance caused by the presence of micro-pores on surfaces, poor weatherability and insufficient surface hardness caused by open and unsealed film pores, and high hardness and brittleness of micro-arc oxidation films of existing micro-arc oxidation processes.

The invention discloses a hierarchical voltage control method and device adaptive to aluminum-magnesium-titanium alloy micro-arc oxidation, and relates to the technical field of hierarchical voltage control of aluminum-magnesium-titanium alloy micro-arc oxidation, and the method comprises the steps: constructing a discharge event energy set according to a voltage time sequence and a current time sequence of an aluminum-magnesium-titanium alloy micro-arc oxidation process, calculating a thermal load agent quantity and a thermal mismatch index sequence; and determining a safety threshold and sensitivity, adjusting the voltage upper limit and the cathode duty ratio based on the sensitivity, and performing qualification judgment in combination with the thermal mismatch index sequence and the safety threshold. Discharge and thermal stress can be accurately regulated and controlled, film layer cracking and particle pollution are reduced, and the film layer quality consistency is improved.