52 results about "Micro arc oxidation" patented technology

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 application relates to the technical field of power connection device manufacturing, in particular to a manufacturing method of a track socket busbar, a composite busbar and a track socket, and aims to solve the problems that although a traditional silver plating process can delay copper-based oxidation, the silver layer is easy to wear and the cost is high, and although a micro-arc oxidation layer of an aluminum-based busbar has insulation, a porous structure is easy to absorb moisture, leading to a decrease in corrosion resistance. The application forms a silver-nickel alloy layer with metallurgical bonding through laser surface alloying, generates an in-situ ceramic insulation layer through micro-arc oxidation, and realizes stable compounding of copper-aluminum substrates by using a mechanical occlusion structure, so that the advantages of synchronously improving the electric conductivity and the corrosion resistance and solving the interface delamination problem are achieved.

This application discloses an adaptive control method and electronic device for PVD and micro-arc oxidation equipment. The method includes: constructing a parameter inversion model characterized by a forward mapping relationship between prior distributions of process parameters and physical constraints; establishing a causal topology based on the mapping relationship, and identifying anomaly types by calculating the joint probability density of the two hypotheses; executing different strategies according to the anomaly type: shielding faulty sensors and reconstructing signals when measurement anomalies occur, and calculating parameter corrections through online optimization when mechanistic anomalies occur; performing safety verification and smoothing filtering on the corrections based on safety constraint envelopes; and generating an interpretable report containing root causes, contribution levels, and maintenance guidelines. This application achieves accurate anomaly type differentiation and robust adaptive control through physical-data decoupling modeling and causal reasoning, significantly improving the stability, safety, and interpretability of processes in complex industrial environments.

This invention belongs to the field of metal surface treatment technology, specifically relating to a method for preparing a corrosion-resistant and wear-resistant composite film with strong adhesion on a magnesium alloy wheel substrate. It is applicable to the surface protection of lightweight automotive components. The method involves using an AZ91D magnesium alloy wheel, pre-treating it with a weakly alkaline composite electrolyte, and preparing a MAO coating using micro-arc oxidation. The MAO-coated magnesium alloy wheel is then immersed in a composite sol and gelled for 1-2 hours in an environment with 60%-80% humidity to form a semi-solidified transparent gel film. Subsequently, it is dried in an oven at 60-80℃ for 1 hour, and finally heated to 150-400℃ and held for 1.5 hours to complete the curing. Following this, a diamond thin film is deposited using MPCVD vapor deposition. This invention solves the core pain points of magnesium alloys being easily worn and corroded, achieving ultra-hard protection.

This invention discloses an anti-scaling and anti-wax alloy material for circulating water systems and its surface treatment method, relating to the field of scale inhibition and prevention. The material includes an alloy matrix, the chemical composition of which, by mass percentage, is as follows: Cu 60-75%, Zn 15-28%, Al 3-8%, Ni 1.2-3.5%, Sn 0.5-2.0%, rare earth composite agent 0.1-0.8%, B 0.02-0.15%, with the balance being unavoidable metallurgical impurities. The metallographic structure of the alloy matrix is ​​ultrafine equiaxed crystals with an average grain size ≤5μm and a material density ≥99.5%. This invention utilizes a Cu-Zn-Al-Ni-Sn alloy system with a specific ratio of rare earth composite agent and trace amounts of boron, supplemented by ultrafine equiaxed crystal structure control, and then undergoes a composite surface treatment involving plasma nitriding, micro-arc oxidation, and vacuum impregnation with fluorosilane. The resulting anti-scaling and anti-wax alloy material for circulating water systems possesses both stable mechanical and electrical properties and excellent adaptability to the water environment.

The application belongs to the technical field of surface modification, and relates to a preparation method of a flame-retardant ceramic coating based on yttrium oxide concentration regulation, comprising the following steps: dissolving sodium hydroxide and sodium fluoride with a specific mass ratio into a sodium silicate salt electrolyte, and adding a Y2O3 solution with a specific concentration into the electrolyte to obtain a first mixed solution; then placing a magnesium alloy substrate in the first mixed solution, and performing micro-arc oxidation treatment to obtain a magnesium alloy-flame-retardant ceramic composite, and finally obtaining a flame-retardant ceramic coating on the surface of the magnesium alloy substrate through post-processing. The mass ratio of sodium hydroxide and sodium fluoride, the concentration of the sodium silicate salt electrolyte, and the Y2O3 solution with an appropriate concentration are cooperatively regulated to realize accurate regulation of the performance of the flame-retardant coating on the surface of the magnesium alloy, so as to meet the actual application requirements of the flame-retardant performance of the magnesium alloy material for high-temperature key components, and promote the wide application of the magnesium alloy under high-temperature and flammable working conditions.

A biodegradable magnesium metal fixation pin for oral tissue fixation and its preparation method are disclosed. The fixation pin includes a pin head and a pin body. The entire fixation pin is made of 99.9-99.99% high-purity magnesium substrate, with no alloying elements added and an impurity content ≤0.01%. The surface of the fixation pin is sequentially coated with an oxide film layer and a polydopamine / hydroxyapatite composite coating. The oxide film layer has a thickness of 5-15 μm and a porous structure with pore sizes of 1-5 μm. The oxide film layer is prepared by a micro-arc oxidation process. The polydopamine / hydroxyapatite composite coating has a thickness of 10-20 μm, wherein the mass fraction of hydroxyapatite is 30-50%. This biodegradable magnesium metal fixation pin for oral tissue fixation features a reasonable structural design, excellent mechanical properties, and controllable degradation behavior.

The present disclosure provides a method for preparing a white ceramic coating on a titanium alloy surface and a white ceramic coating, and relates to the technical field of titanium alloy surfaces, and comprises the following steps: mechanically polishing a titanium alloy sample to obtain a polished titanium alloy sample; performing ion nitriding treatment on the polished titanium alloy sample to prepare an ion nitriding layer; the ion nitriding layer only comprises a diffusion layer; and performing micro-arc oxidation treatment on the titanium alloy sample comprising the ion nitriding layer to prepare a white ceramic coating. The present disclosure can prepare a white ceramic coating with high reflectivity.

The utility model relates to fluorine pump composite cooling module controller technical field, solved the problem that the lack structure protects the controller, and its easy because long time high -power work and produce the heat damage situation. Specifically for a kind of fluorine pump composite cooling module controller, including controller shell, the inside of controller shell is provided with metal heat conduction interlayer, metal heat conduction interlayer inboard is installed with heating element group, the metal heat conduction interlayer extends to the lateral wall direction of controller shell and forms the radiating fin integrally formed with it, the heating element group and metal heat conduction interlayer keep direct contact to conduct heat to radiating fin;The metal heat conduction interlayer is embedded semiconductor refrigeration piece in the path of extending to form radiating fin, the cold end of the semiconductor refrigeration piece is connected with metal heat conduction interlayer and the hot end is towards the bottom of radiating fin;The metal heat conduction interlayer surface is covered with micro-arc oxidation ceramic layer and is integrated with copper heat pipe inside.

The application relates to the technical field of automobile air conditioning systems, and discloses a temperature compensation device for an automobile air conditioner speed regulating resistor, which comprises a temperature compensation module, a speed regulating resistor module and a support assembly. The temperature compensation device for the automobile air conditioner speed regulating resistor is characterized in that the lead of the thermistor is vertically welded with the compensation circuit board, the constant pressure exerted by the elastic pressing piece in the connecting support is combined, the thermistor is ensured to be in zero-gap contact with the automobile air conditioner speed regulating resistor body, accurate compensation in the whole temperature range is realized, the stability of the fan rotating speed is improved, the connecting support integrates the compensation circuit board and the spring-driven clamping rod structure, the number of parts is reduced compared with a traditional scheme, the heat-conducting sheet is directly connected with the heat-dissipating sheet to replace the external heat-dissipating circuit, the external circuit design is reduced, the specific surface area can be increased through the honeycomb holes, the natural convection efficiency is improved through the micro-arc oxidation layer, the heat-dissipating effect is optimized, and the system complexity is reduced.

The application discloses a kind of sealing methods for the micro-arc oxidation film layer of aluminum alloy surface, belong to surface engineering technical field, to solve the problem that traditional sol sealing agent is difficult to effectively wet, penetrate its micron level pore due to the low surface energy of micro-arc oxidation film, poor hydrophilicity.The sealing method of the application comprises the following steps: a) cleaning and drying the aluminum alloy workpiece that has completed micro-arc oxidation;B) surface activation treatment is carried out to the aluminum alloy workpiece after drying, and the surface activation treatment uses low-temperature plasma treatment or ultraviolet ozone treatment;C) the aluminum alloy workpiece after surface activation treatment is immersed in sealing agent for sealing treatment;D) heat treatment is carried out to the aluminum alloy workpiece after sealing treatment, so that the sealing agent is solidified.

This invention discloses a method for preparing a highly corrosion-resistant micro-arc oxidation coating based on the synergistic effect of cerium salt valence state and voltage. The method involves adding trivalent cerium salt as a modifier to the micro-arc oxidation electrolyte and performing oxidation treatment within a suitable voltage range. Through the synergistic effect of valence state and voltage, a highly corrosion-resistant coating is obtained. The coating prepared by this invention has a uniform surface, a dispersed cerium-rich phase distribution, a dense cross-section, a cross-sectional porosity as low as below 3.11%, and a surface roughness (Sa) of approximately 14.2 nm. The main component of the coating is γ-Al₂O₃, with Ce as the predominant component. 3+ and Ce 4+ The coexistence of two compound states in the coating effectively refines the coating grains, increases the coating density, reduces micro-defects on the coating surface, and ensures that Ce is distributed relatively uniformly in the coating without aggregation.

The application relates to a magnesium alloy micro-arc oxidation process, a magnesium alloy and application thereof, and the process comprises the following steps: firstly, a magnesium alloy workpiece to be treated is pretreated and then placed into an electrolyte; the composition of the electrolyte comprises the following components: 5-10 g / L of sodium silicate, 10-15 g / L of potassium pyrophosphate, 1-3 g / L of sodium aluminate, 3-5 g / L of sodium hydroxide and 1-10 g / L of potassium fluorotitanate; then, the magnesium alloy workpiece is subjected to micro-arc oxidation treatment by using the electrolyte; during the micro-arc oxidation treatment, the pH value of the electrolyte is greater than 12, the treatment temperature is 25+ / -5 DEG C, the current density is 1-5 A / dm2, and the treatment time is 5-60 min; then, the electrolyte is subjected to component analysis according to a preset interval, and the concentration of each component of the electrolyte is adjusted according to the analysis result. The application solves the problems that the yield of magnesium alloy prepared by the current magnesium alloy micro-arc oxidation is low, the corrosion resistance is insufficient, and the magnesium alloy is difficult to be used in a cooling liquid corrosion environment for a long time.

The application discloses a titanium foil-based ceramic filter screen material and a preparation method thereof, and belongs to the technical field of precision filter materials.The titanium foil-based ceramic filter screen material comprises a titanium foil base body and a micro-arc oxidation ceramic layer, and a plurality of laser-prepared through holes are arranged on the titanium foil base body, wherein the micro-arc oxidation ceramic layer is distributed on the surface of the titanium foil base body and the inner walls of the plurality of laser-prepared through holes, so that the technical problems that the toughness, temperature resistance and corrosion resistance of the filter screen are difficult to be considered simultaneously, the micro-arc oxidation on the titanium foil base body is directly broken through to form holes, and the filter screen is easy to break are solved, the technical effect that the filtering precision and the filter screen aperture are controllable, the structure is stable, the performance is excellent, mass production is achieved, and the continuous production of roll-to-roll is suitable is achieved.

The application provides a performance test system and method of a micro-arc oxidation product, which comprises the following steps: obtaining a stable open circuit potential of the micro-arc oxidation product in an electrolyte solution at a preset temperature; taking the stable open circuit potential as a starting point, applying a linear potential signal to the micro-arc oxidation product, and determining a current inflection point of the micro-arc oxidation product corresponding to a micro-arc oxidation coating in an anode region in a potential signal scanning process; extracting an accelerated spectrum of a target environment for corrosion based on a coating integrity factor determined based on the current inflection point; placing the micro-arc oxidation product in a controllable environment box for accelerated corrosion exposure treatment based on the accelerated spectrum of the target environment, and determining a current degradation point of the micro-arc oxidation product corresponding to the micro-arc oxidation coating in the anode region after the corrosion exposure ends; and determining a corrosion resistance grade of the micro-arc oxidation product according to the current inflection point and the current degradation point. The technical scheme provided by the application can realize accurate matching of the corrosion resistance grade of the micro-arc oxidation product under accelerated corrosion test conditions.

This invention discloses a metal-ceramic composite gradient orthopedic implant material and its preparation process. This orthopedic implant material, obtained through gradient structure design, includes a specific intermediate layer thickness and interface structure: Ti matrix → Ti-Al-Si diffusion layer → Al alloy buffer layer → Al2O3 ceramic layer, effectively alleviating contact stress and preventing ceramic layer brittleness. The preparation process involves cladding a silicon-aluminum alloy onto the surface of a titanium alloy Ti-6Al-4V / TC4 using cold metal transfer (CMT) technology. After controlling the layer thickness through precision machining, a dense alumina ceramic layer is grown in situ using micro-arc oxidation (MAO). Finally, a mirror-finish composite gradient material is achieved through ultra-precision grinding. This preparation process solves the problems of easy peeling and poor wear resistance of existing coatings, addressing the clinical challenges of poor wear resistance, insufficient adhesion of ceramic coatings, and easy peeling in traditional titanium alloy implants. It constructs an integrated gradient structure with a "tough titanium alloy matrix – metallurgically bonded transition layer – high-hardness ceramic functional layer."

This invention discloses a wear-resistant treatment process for all-titanium alloy drill pipes, belonging to the field of surface treatment technology for oil drilling equipment. This process provides a differentiated synergistic protection scheme for different wear mechanisms in various parts of the titanium alloy drill pipe (inner wall, outer wall, and joints). The inner surface undergoes Ni-diamond-hBN nanocomposite electroplating and laser remelting sequentially to form a metallurgically bonded friction-reducing and wear-resistant layer; the outer wall undergoes micro-arc oxidation and supersonic flame spraying sequentially to construct a ceramic anchoring layer + metal-ceramic composite system; the joint uses gradient composition laser cladding to form a wear-resistant band, with localized additive reinforcement in its central area. This invention, through multi-technology integration and structural innovation, solves the technical bottlenecks of poor adhesion between a single coating and the titanium substrate, easy peeling, and mismatched wear resistance in different parts, significantly improving the overall wear life and reliability of all-titanium alloy drill pipes under harsh drilling conditions.

The application discloses an electrolyte system for a multi-component ceramic coating on a tantalum alloy surface by micro-arc oxidation, which comprises NH4H2PO4, KOH, glycerol, ethanolamine, Y(NO3)4, soluble zirconium salt and soluble hafnium salt, and deionized water as a solvent; the tantalum alloy is pretreated and then micro-arc oxidized by gradient voltage rise; and the phase composition of the ceramic coating comprises tetragonal ZrO2, tetragonal HfO2 and orthorhombic Ta2O5. The electrolyte system introduces Zr and Hf metal cations to form a multi-component ceramic coating in situ with the tantalum alloy, forms a nanocrystal / sub-micron crystal double-scale structure by gradient voltage rise, improves the micropore structure of the ceramic coating, and improves the compactness, interface bonding strength and high-temperature oxidation resistance of the ceramic coating. The ceramic coating has low crack density and porosity, good interface bonding strength and high-temperature oxidation resistance, and is suitable for the field of aerospace.

The utility model discloses a kind of high-temperature-resistant mobile phone mainboard upper cover assembly, including metal substrate layer and composite heat dissipation layer, metal substrate layer, made of aluminium alloy or magnesium alloy, its outer surface is equipped with micro-arc oxidation insulating layer;Composite heat dissipation layer is inlaid in the inner side of metal substrate layer by hot-pressing process, and is composed of ceramic fiber cloth layer, nano alumina coating and heat-conducting silicone layer sequentially arranged from inside to outside;The thickness of the nano alumina coating is 10-50 μm, and porosity is ≤5%.The high-temperature-resistant mobile phone mainboard upper cover assembly described in the utility model, through the synergistic effect of triple composite heat dissipation structure, significantly improve the heat dissipation efficiency, micro-arc oxidation insulating layer provides stable insulation protection, withstand high-temperature environment, air vent and through type heat dissipation channel enhance air convection, reduce core area temperature.

The application discloses a kind of corrosion-resistant magnesium alloy material and preparation method thereof, it is related to alloy material technical field.The application is when preparing corrosion-resistant magnesium alloy material, pure magnesium, pure zinc, pure aluminum, magnesium gadolinium intermediate alloy and magnesium calcium intermediate alloy are fused and refined to obtain as-cast magnesium alloy;As-cast magnesium alloy is sequentially subjected to solid solution treatment, aging treatment, is extruded and is spun to obtain fine-grained magnesium alloy;After fine-grained magnesium alloy is cut and sampled, micro-arc oxidation is carried out, and then treated by 3-aminopropyl triethoxysilane alcoholysis solution to obtain pretreated magnesium alloy;Urea, formaldehyde are wrapped 2-mercapto benzothiazole to carry out in-situ polymerization to prepare corrosion-inhibiting microcapsule;Dimethyl imidazole, corrosion-inhibiting microcapsule and epoxy resin are spin-coated on the surface of pretreated magnesium alloy to prepare corrosion-resistant magnesium alloy material.The corrosion-resistant magnesium alloy material prepared by the application has excellent corrosion resistance, tensile strength and wear resistance.

The application discloses a heat-resistant and wear-resistant cast aluminum alloy micro-arc oxidation ceramic film and a preparation method thereof, and relates to the technical field of ceramic films. The method comprises the following steps: after the cast aluminum alloy substrate is pretreated, bipolar pulse micro-arc oxidation treatment is carried out in an electrolyte containing silicate, phosphate and citrate; then the substrate is immersed in a rare earth-titanate composite solution containing CeO2, La2O3 and butyl titanate for heat curing, so as to realize pore sealing and heat-resistant modification; and then the substrate is immersed in a wear-resistant composite solution containing alpha-Al2O3, h-BN, KH-560 and PVP, and is subjected to ultrasonic-assisted infiltration and secondary curing to obtain the ceramic film. The heat-resistant modification layer of the rare earth-titanate and the wear-resistant modification layer of alpha-Al2O3 / h-BN are synergistically combined, and the interlayer bonding problem is solved by using KH-560 and PVP, so that the high-temperature oxidation resistance, thermal stability and wear-resistant life of the film layer are significantly improved, and the method is suitable for high-temperature and high-wear working conditions of the cast aluminum alloy.

This invention discloses an aluminum composite panel and its composite processing technology, belonging to the technical field of building decoration materials. The aluminum composite panel includes an aluminum alloy panel, a core layer, and an in-situ anchored gradient interface bonding layer and a bifunctional grafted polyolefin hot melt adhesive film layer sequentially disposed between the two. A porous micro-arc oxidation ceramic substrate film is generated in-situ on the inner surface of the aluminum alloy panel. The gradient interface bonding layer is a silane coupling agent-epoxy functional group grafted modified layer, anchored and filled within the pores to form a continuous transition film. The core layer contains a synergistic halogen-free flame retardant of hydroxylated basalt fibers and needle-like wollastonite fibers. The composite process uses low-temperature reactive hot pressing at 130-160℃ to induce ring-opening chemical bonding of the interface epoxy groups. The aluminum composite panel of this invention has a peel strength ≥160N / 25mm, a retention rate ≥90% after thermal cycling, a flame retardancy rating of V-0, and an impact strength ≥15kJ / m². 2 It combines excellent interface bonding, flame retardant toughness, and environmental protection characteristics.

This disclosure provides a method for preparing a composite coating on a titanium alloy surface and a titanium alloy, relating to the field of alloy coating technology. The method for preparing the composite coating on a titanium alloy surface includes: forming a carbonitriding layer on the surface of a titanium alloy substrate using a liquid-phase plasma process; preparing Al2O3@MoS2 powder using a solid-phase coating process; wherein the Al2O3@MoS2 powder is MoS2 coated with Al2O3 powder; and performing micro-arc oxidation treatment on the titanium alloy substrate with the carbonitriding layer formed on its surface to form a micro-arc oxidation layer on the carbonitriding layer; wherein the electrolyte used in the micro-arc oxidation treatment contains Al2O3@MoS2 powder. This disclosure can improve the performance of titanium alloy surface coatings.

The utility model relates to the technical field of micro-arc oxidation relates to a micro-arc oxidation device with cooling and stirring function, include: the reaction tank is the open structure of upper end, is provided with tubular cathode body along the inner wall of reaction tank, the lower end of reaction tank is fixed through setting fixed structure and is fixed to the workpiece to be processed, tubular cathode body is connected with the negative pole of micro-arc oxidation power supply, the workpiece to be processed is connected with the anode of micro-arc oxidation power supply, tubular cathode body and the reaction tank are all filled with same electrolyte, the tubular cathode body is opened and has the water hole, under the action of cooling machine, when electrolyte carries out cooling circulation, the electrolyte in tubular cathode body will be spouted outward through the water hole, accelerates the circulating flow of electrolyte in reaction tank. The micro-arc oxidation device provided by the utility model solves the problem of the preparation of the micro-arc oxidation layer on the surface of the special-shaped workpiece by optimizing the distribution of the reaction electric field, and improves the coating preparation efficiency.

The application discloses a method for improving the anti-abrasion performance of an aluminum material surface. The technical scheme adopted by the application comprises the following steps: preparing a solution system containing first microparticles; performing micro-arc oxidation treatment on the surface of a sample by using the solution system containing the first microparticles to form a composite micro-arc oxidation film; the composite micro-arc oxidation film comprises a micro-arc oxidation film formed on the surface of the sample and the first microparticles dispersed in the micro-arc oxidation film; the first microparticles are selected from microparticles with a particle size slightly larger than the hole diameter of the micro-arc oxidation film and the same composition as the micro-arc oxidation film; laser treatment: presetting second microparticles on the surface of the obtained sample composite micro-arc oxidation film to form a ceramic powder film, and performing laser treatment on the surface of the ceramic powder film. The application improves the micro-arc oxidation film by using targeted laser treatment technology, greatly reduces the holes and cracks of the micro-arc oxidation film, and thus significantly improves the anti-abrasion performance of the aluminum material surface.

The present application belongs to the field of corrosion and protection of metal-based materials, and particularly relates to a conductive micro-arc oxidation coating of magnesium alloy and a preparation method and application thereof, which comprises the following steps: pretreating a magnesium alloy substrate; configuring a basic electrolyte; preparing a modified electrolyte; and performing micro-arc oxidation treatment to obtain a conductive micro-arc oxidation coating. In addition, the present application also prepares a conductive micro-arc oxidation coating of magnesium alloy by using the above preparation method. The conductive micro-arc oxidation coating uses copper nanowires or silver nanowires, or corresponding derivatives of the copper nanowires or silver nanowires as conductive units. The conductive units and an interface modifier are added into the electrolyte to directly prepare the conductive micro-arc oxidation coating on the surface of the magnesium alloy. The conductive micro-arc oxidation coating has good corrosion resistance, conductivity and thermal conductivity, and can be applied to the fields of light-weight conductive components and electronic device housings, and can effectively avoid the shortcomings of the traditional micro-arc oxidation coating in electrical insulation.

The present application belongs to the technical field of magnesium-zinc magnesium alloy surface treatment, and particularly relates to a method for in-situ growth of different blue ceramic film layers on the surface of magnesium-zinc magnesium alloy. The method comprises the following steps: polishing and cleaning the surface of a magnesium-zinc magnesium alloy sample, then sequentially performing first alkali washing, first water washing, first acid washing, second water washing, second acid washing, third water washing and second alkali washing on the surface of the sample to obtain a pretreated magnesium alloy; placing the pretreated magnesium alloy in an electrolyte for micro-arc oxidation treatment to in-situ generate a blue ceramic film layer on the surface of the magnesium alloy; the electrolyte is a fluorotitanic acid potassium and cobalt sulfate added in a silicate and phosphate composite electrolyte system; or the electrolyte is a fluorotitanic acid potassium added in a phosphate electrolyte system. The present application prepares different blue ceramic film layers, which can improve the ornamental property of magnesium-zinc magnesium alloy components and improve the visual effect.

This invention discloses a surface osteogenic-antibacterial composite coating material based on the principle of magnetically driven biomembrane disruption, its preparation method, and its application. Specifically, AgNRs are prepared using a solvothermal method; a MesoFe3O4 shell is constructed on their surface using a template method to obtain AgNRs@MesoFe3O4 nanomaterials; antibacterial agents are loaded into the nanomaterials using cyclic ultrasonic impregnation-vacuum drying; a microporous array structure is controllably constructed on the surface of titanium-based medical devices using a micro-arc oxidation process; and Zn is introduced onto the medical device surface using an ion implantation process. 2+ To form Zn 2+ Transition layer structure; combining electrophoresis, the above-mentioned drug-loaded nanomaterials are loaded into the above-mentioned micropores, and after rinsing and low-temperature drying, a surface osteogenic-antibacterial composite coating material is obtained; this coating material, driven by a rotating magnetic field, disrupts bacterial biofilms through the movement of drug-loaded nanomaterials, and releases antibacterial agents under near-infrared light irradiation, Zn 2+ The transition layer promotes osteogenic activity.

This invention discloses a closed-loop, uniformly circulated micro-arc oxidation device. The overall design employs a closed structure, comprising five subsystems: an anode device, a lifting device, a cathode device, a liquid supply device, and an electrical system. These subsystems work together to achieve functions such as workpiece clamping and disassembly, solution temperature control and delivery, and uniform electric field discharge during the micro-arc oxidation process. Using this device for micro-arc oxidation effectively solves the problems of poor stability, poor uniformity, and poor consistency in traditional micro-arc oxidation devices regarding solution, temperature, current density, and electric field control. It achieves precise control of process parameters in each stage of micro-arc oxidation, improving product quality consistency and overall performance stability. It possesses advantages such as small size, modularity, integrated automation, high efficiency, and precision, and can be widely promoted for engineering applications. It has practical guiding significance for the process promotion and intelligent development of micro-arc oxidation equipment.