64results about "Surface reaction electrolytic coating" patented technology

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

The application discloses an oral implant neck soft tissue integration site coating and a preparation method thereof. A titanium-based implant is adopted, a microgroove is etched on the surface of the implant, anodic oxidation and hydrogenation are carried out to obtain a nanotube microgroove super-hydrophilic structure, and a hyaluronic acid / chitosan loaded laminin-332 plasmid DNA@zif-8 composite coating is constructed on the micro-nano morphology surface. The micro-nano morphology after laser microgroove and anodic oxidation is improved in the application, is suitable for guiding periodontal cells to grow in, and has better cell affinity; the ph-responsive ZIF-8 transfects Lama 3 genes, promotes hemidesmosome formation, and enhances the purpose of closing the soft group around the implant; ZIF-8 is used as a transfection carrier, has certain antibacterial performance, can effectively correspond to the bacterial environment in the initial implantation period, and can effectively inhibit the growth of bacteria. 2+ The Zn ions generated during the decomposition and delivery of the drug have certain antibacterial performance, can effectively correspond to the bacterial environment in the initial implantation period, and can effectively inhibit the growth of bacteria.

The application provides an aluminum alloy low-temperature oxidation hole sealing reagent and a preparation method thereof, and relates to the technical field of aluminum alloy surface treatment. The aluminum alloy low-temperature oxidation hole sealing reagent comprises the following raw materials in parts by mass: 2-9 parts of lithium salt, 0.1-1 parts of surfactant, 0.2-5 parts of alcohol, 0.5-1 parts of pH buffer, 0.5-5 parts of corrosion inhibitor, 0.5-5 parts of dispersant and 80-100 parts of water. The aluminum alloy hole sealing treated by the reagent has small hole sealing weight loss, high corrosion resistance and high pollution resistance.

This invention discloses a method for increasing the hydrophilicity of titanium / titanium alloy dental implants using an electrochemical approach, comprising the following steps: S1, pretreating the titanium / titanium alloy dental implant to obtain a pretreated titanium / titanium alloy dental implant; S2, sandblasting and drying the pretreated titanium / titanium alloy dental implant obtained in S1 to obtain a treated titanium / titanium alloy dental implant; S3, acid etching the treated titanium / titanium alloy dental implant obtained in S2 to obtain an acid-etched titanium / titanium alloy dental implant; S4, electrochemical activation treatment to obtain an activated titanium / titanium alloy dental implant; S5, continuously rinsing the activated titanium / titanium alloy dental implant obtained in S4 with purified water for 20 seconds and drying it in a vacuum drying oven. This invention uses cyclic voltammetry (CV) electrochemically to activate the titanium / titanium alloy implant, thereby enhancing its hydrophilicity.

The present invention relates to a dental implant comprising a dental implant basic body (10) extending along a longitudinal axis A from an apical end (12) to a coronal end (14) arranged opposite to the apical end, said dental implant basic body comprisingan anchoring part (16) facing the apical end and intended to be anchored in bone of a patient, and a head part (18) facing the coronal end and intended to form the basis on which a suprastructure is mounted. The anchoring part comprises a shaft (20) having a basic form that is substantially cylindrical or that tapers in the direction toward the apical end in a cone-like manner. At least a portion of the shaft forms a bone tissue contact region (22), the outer surface of which forming a bone tissue contact surface (30). Coronally to said bone tissue contact region a soft tissue contact region (24) is arranged, the outer surface of which forming a soft tissue contact surface (32). According to the invention, the dental implant further comprises nanostructures formed on the soft tissue contact surface, said nanostructures extending in at least two dimensions to 200 nm at most.

This invention relates to the field of insulating aluminum busbar technology, and in particular to an insulating aluminum busbar for high-voltage connection in a power battery system, its preparation method, and its application. An insulating aluminum busbar for high-voltage connection in a power battery system includes: a three-dimensionally bent aluminum alloy substrate; a ceramic insulating layer, which covers the outer surface of the three-dimensionally bent aluminum alloy substrate and is metallurgically bonded to it; and two conductive ends, which are located at both ends of the three-dimensionally bent aluminum alloy substrate, with a nickel sheet fixedly connected to each conductive end and covered with a heat-shrink tubing. This application achieves metallurgical bonding between the ceramic insulating layer and the aluminum substrate, resulting in extremely strong bonding and solving the problem of coating peeling. The two conductive ends located at both ends of the substrate ensure the conductivity of the high-voltage connection and provide secondary protection for the welded area through the heat-shrink tubing, improving connection reliability.

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.

This application relates to a passivation treatment solution, aluminum alloy components, and a method for preparing the same. The passivation treatment solution comprises a solvent and components dispersed in the solvent at the following concentrations: fluorozirconate 5 g / L–30 g / L, fluorinated silane coupling agent 10 ml / L–50 ml / L, polyphenol complexing agent 1 g / L–8 g / L, and silicate 5 g / L–25 g / L. The passivation treatment solution, through a multi-component synergistic formulation composed of fluorozirconate, fluorinated silane coupling agent, polyphenol complexing agent, and silicate, exhibits different functions and molecular bridging synergistic effects. After passivation treatment of anodized aluminum alloys, the alkaline corrosion resistance of the aluminum alloys can be significantly enhanced.

The present disclosure generally relates to materials, processes, generators, and / or systems, for generating radioisotope. The present disclosure also generally relates to ceramic materials comprising radioisotope suitable for use in a radioisotope generator. The present disclosure also generally relates to processes, generators and / or systems, for producing and capturing radioisotope. The present disclosure also generally relates to the preparation of radioisotope solutions for use in radiopharmacy and / or other clinical applications.

The application discloses a device and a method for preparing a high-temperature-resistant ceramic coating on a titanium alloy surface through laser-assisted plasma sintering of nanoparticles; the device introduces one or more kinds of nanoparticles such as Al2O3, ZrO2 and CeO2 into an electrolyte column through a lateral nozzle, and the nanoparticles have good dispersibility, so that the loss of laser beams in the electrolyte column caused by a traditional nanoparticle introduction mode is avoided; in the device, laser energy directly acts on the nanoparticles, the nanoparticles are pre-melted or softened after absorbing the energy, and the nanoparticles are rapidly sintered into the coating under the action of a discharge plasma, so that the sintering efficiency of the nanoparticles in a selective area plasma electrolytic oxidation process is improved; the device accelerates the speed of the nanoparticles in participating in the formation of oxides, can improve the coating thickness and the surface micropore sealing effect, and can prepare a multifunctional composite ceramic coating by using nanoparticle solutions with different components and proportions, so that the heat resistance of the titanium alloy is improved.

A process for activating the surface of an electrode based on DLC amorphous carbon by an electrochemical treatment including at least the following steps (i) and (ii), carried out in this order: (i) applying, to the electrode, an electrical excitation in the form of an alternation of cathodic and anodic electrical pulses, these being current or voltage pulses, in contact with an aqueous electrolyte including at least one oxidizing species of a redox pair having a standard potential, at ambient temperature and atmospheric pressure, denoted E0, strictly greater than 0, and at least one base salt; and (ii) applying, to the electrode that was previously subjected to step (i), an electrical excitation in the form of an alternation of cathodic and anodic electrical pulses, these being voltage pulses, in contact with an aqueous electrolyte devoid of electroactive species.

To provide a space purification device that can stably generate a desired amount of hypochlorous acid gas over a long period of time. [Solution] The air purification device includes an electrolytic cell that generates hypochlorous acid, and Cl - The system comprises a supply tank for supplying an aqueous solution to an electrolytic cell, an electrolytic anode, a reversible common electrode, and a regenerative cathode provided in the electrolytic cell, a supply cathode provided in the supply tank, and an anion exchange membrane provided to connect the electrolytic cell and the supply tank. A first aqueous solution is electrolyzed without a membrane using the electrolytic anode and the common electrode used as the cathode to generate hypochlorous acid, and a purification operation is performed in which air introduced from the outside space flows through the electrolytic cell and is released into the outside space together with the hypochlorous acid. If the oxide film on the common electrode decreases due to the purification operation, the membrane-free electrolysis is stopped and the system switches to a regeneration operation to regenerate the oxide film, and the oxide film on the surface of the common electrode is regenerated by applying a voltage between the common electrode, which is set as the anode, and the regenerative cathode.

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.

A method for monitoring and optimizing a sealing process in situ includes sealing a surface of an anodized substrate, providing a test anodized substrate corresponding to the anodized substrate into the same sealing process as the anodized substrate, measuring an electrochemical surface potential of a test anodized substrate that represents the surface of an anodized part, collecting electrochemical surface potential measurement data, analyzing the electrochemical surface potential measurement data, and identifying one or more performance indicators related to seal quality and processing parameters. The method may include optimizing the sealing process using information obtained from analyzing the electrochemical surface potential measurement data, measuring the electrochemical surface potential using a potentiostat and a reference electrode, and measuring an electrochemical surface potential of a test anodized substrate that represents the surface of an anodized part.

The utility model provides a kind of spraying type cooling device for aluminum alloy piece anodic oxidation, including installation table, the top and bottom of installation table are provided with spray cleaning mechanism, the bottom of the below of installation table and located spray cleaning mechanism is placed with water collecting tank, the both sides of installation table top are fixedly installed with two second installation rods, transmission roller is rotatably connected between second installation rod, the surface of transmission roller is provided with transmission belt;The water collecting tank for setting is used to hold cleaning fluid, and the liquid after cleaning is collected to facilitate subsequent discharge, the second installation rod, transmission roller and transmission belt for setting are used to convey the aluminum alloy piece needing cleaning, the spray cleaning mechanism for setting is used to spray the aluminum alloy piece conveyed, increase liquid atomization so that it can evaporate quickly to take away heat to accelerate the cooling of aluminum alloy piece, and the electroplating solution attached to the surface of aluminum alloy piece is cleaned.

This utility model relates to the field of electroplating technology and discloses a stirring device for a dyeing tank. The top of the slide plate is rotatably connected to two slide seats with a fixing bolt. A push seat is sleeved on the outside of the fixing bolt. A fixing seat is fixedly connected to the outside of each of the two slide seats. A second arc-shaped groove is opened on the opposite side of each of the two fixing seats. This utility model allows gas to enter the interior of the air outlet pipe and be sprayed out through the air outlet hole, causing the liquid inside the dyeing tank to churn, thereby achieving a stirring effect and enabling the workpiece to be uniformly dyed. Furthermore, during disassembly and maintenance, the push seat is moved by turning the fixing bolt, so that the second inclined surfaces at both ends of the push seat abut against or away from the outside of the first inclined surface, thereby pushing the slide seat to move and abut against or away from the outside of the air outlet pipe. This allows for quick installation and disassembly of the air outlet pipe without the need to turn multiple bolts, saving time and effort and improving the efficiency of air outlet pipe maintenance.

The application discloses a method for improving color uniformity of an anodic oxidation film layer on a titanium crystal flower surface, relates to the field of titanium and titanium alloy surface treatment, and aims at the problem of color unevenness caused by the inconsistent local film forming rate and uneven film thickness of the titanium crystal flower surface due to the grain orientation difference. The method comprises the following steps: S1, providing a titanium crystal flower product; S2, placing the titanium crystal flower product in an acid electrolyte to perform first-step anodic oxidation; and S3, after the first-step anodic oxidation, re-clamping the titanium crystal flower product to perform second-step anodic oxidation. The method does not need to perform complicated modification on the existing anodic oxidation equipment, nor needs to introduce an external additive, and can effectively improve the color consistency of the anodic oxidation film layer on the titanium crystal flower surface by optimizing a voltage application path, and is suitable for industrial application.

The embodiment of the application provides a titanium dioxide nanotube intermediate layer cooperated with neodymium modified titanium-based lead dioxide hydrophobic electrode and a preparation method and application thereof, and belongs to the technical field of electrocatalytic oxidation anode materials. The titanium-based lead dioxide hydrophobic electrode comprises a titanium base plate, a titanium dioxide nanotube intermediate layer formed on the surface of the titanium base plate, which is a vertically oriented nanotube array structure, and a neodymium modified lead dioxide surface active layer deposited on the surface of the titanium dioxide nanotube intermediate layer; wherein the neodymium modified lead dioxide surface active layer is a super-hydrophobic surface formed by regulating a hydrophobic agent, and the contact angle with water is greater than or equal to 140 degrees. The electrode prepared by the application solves the problems of easy falling off of the active layer and passivation of the titanium base, greatly prolongs the service life of the electrode, and enhances the catalytic activity and corrosion resistance, thereby improving the efficiency of wastewater advanced treatment and salt resource utilization.

The application relates to the application field of high polymer materials in concrete for corrosion prevention of marine and coastal buildings, and particularly relates to a preparation method and application of Al2O3 modified ultrahigh molecular weight polyethylene fiber; the preparation method comprises the following steps: S1, ultrahigh molecular weight polyethylene fiber is subjected to oxidation treatment and drying; S2, the oxidized ultrahigh molecular weight polyethylene fiber is soaked in a coupling agent solution for hydrolysis, and then taken out for drying; S3, an aluminum salt, nitric acid and water are mixed to obtain a hydrolysis solution; the coupling agent grafted ultrahigh molecular weight polyethylene fiber is immersed in the hydrolysis solution; after stirring and reaction, the Al2O3 modified ultrahigh molecular weight polyethylene fiber is prepared. The prepared modified fiber is mixed into cement mortar, so that the combination capacity for chlorine ions can be improved, the durability of concrete in a high-chloride environment can be prolonged, interface cracks can be reduced, the mechanical properties of the concrete can be improved, and the service life can be prolonged.

The present invention relates to a bone implant with a porous lithium tantalate membrane and a method for preparing the bone implant. The bone implant comprises: (1) a substrate; and (2) a porous membrane on the substrate, wherein the substrate is selected from the group consisting of a tantalum substrate, a niobium substrate, a tantalum-niobium alloy substrate and a titanium substrate, and wherein the porous membrane is selected from the group consisting of a porous lithium tantalate membrane, a porous lithium niobate membrane, a porous lithium tantalate-lithium niobate mixture membrane and a porous titanium oxide membrane. The bone implant of the present invention has one or more of the following beneficial effects: (1) The bone implant has excellent corrosion resistance; (2) the elasticity modulus of the bone implant can be adjusted according to process conditions so that it has higher biocompatibility with the elasticity modulus of a human or animal bone (such as an alveolar bone and a cranium); (3) the white color of the bone implant is close to the color of the bone itself and the bone implant has an aesthetic appearance; (4) the bone implant has excellent bacteriostatic properties.

The present subject matter relates to an electronic apparatus (100) that includes an internal circuitry (102a; 102b) and a housing (104) defining an interior volume (108) in which the internal circuitry (102a; 102b) is disposed. The housing (108) includes at least one surface (110a; 110b; 110c; 110d; 111a; 111b; 111c; 111d) formed from a metal substrate (202). An anodized layer (112a; 112b; 112c; 112d) is formed on at least one surface (110a; 110b; 110c; 110d; 111a; 111b; 111c; 111d). This anodized layer (112a; 112b; 112c; 112d) includes a plurality of pores within which fire retardant polymer material (116) is disposed. The present subject matter relates also to a method of manufacturing the electronic apparatus (100).