38 results about "Titanium surface" patented technology

The invention relates to the technical field of etching solutions, and particularly discloses an etching solution for inhibiting etching of metallic titanium and application of the etching solution. The etching solution contains hydrofluoric acid, ammonium fluoride, an additive 1 and an additive 2; wherein the additive 1 is a fluorine capture type inhibitor, and the additive 2 is a surface adsorption type organic protective agent. The etching solution can effectively inhibit the corrosion of a titanium layer while keeping the high etching rate of silicon oxide, obviously improves the etching selection ratio of silicon oxide to titanium, has lower surface tension and higher uniformity, and is suitable for a wet etching scene with a complex structure. The additive 1 captures free fluorine ions through complexation or precipitation, the activity of the fluorine ions is reduced, and therefore the chemical attack on the titanium surface is reduced; and the additive 2 can form a transient adsorption protective film on the titanium surface to further delay the dissolution of titanium. The synergistic effect of the two additives can effectively inhibit titanium corrosion and maintain high etching efficiency.

The application relates to a low-cost surface titanium doping method of a lithium-rich positive electrode material and belongs to the field of lithium ion battery positive electrode materials. Specifically, the method comprises the following steps: placing the positive electrode material into a solution with a specific pH, then continuously stirring and adding a titanium sulfate solution into the solution; filtering the solid powder obtained after reaction for a certain time, drying, and sintering at high temperature to obtain the titanium surface-doped positive electrode material. The lithium-rich positive electrode material prepared by the method has improved first circle coulomb efficiency, discharge specific capacity and cycle performance, the process is simple, the cost is lower than that of an organic titanium source, the method is suitable for large-batch treatment of the lithium-rich positive electrode material, the use demand of the power battery can be met, and the method has a good application prospect.

The invention provides a separation method and a content determination method for titanium foreign matters in a lithium battery positive electrode material, through the step design of material screening, metal titanium particle purification, metal titanium particle digestion and titanium content determination, and by means of a specific mixed acid system, the digestion process is accurately controlled, the positive electrode material is effectively digested, and meanwhile, the titanium foreign matters in the lithium battery positive electrode material are effectively separated. Through the early-stage passivation process, a layer of compact oxidation film with titanium dioxide as the main component can be rapidly formed on the titanium surface, internal titanium is effectively prevented from continuously reacting with nitric acid and hydrochloric acid, and the original form and content of the metallic titanium foreign matter are reserved to the maximum extent; therefore, the content of the titanium foreign matters in the material is accurately measured, and meanwhile, by optimizing a sample pretreatment mode, complex and high-cost operation steps are reduced, and consumption of expensive reagents is reduced. The invention provides a new detection thought and method, fills the blank in the related technical field, and promotes the development and application of the detection technology in the field.

The invention discloses a titanium implant surface hydrogen sequential release soft tissue combination promoting coating and a preparation method and application thereof, and belongs to the technical field of dental material preparation. The preparation method comprises the following steps: preparing micro-arc titanium oxide; the preparation method comprises the following steps: synthesizing mesoporous polydopamine nanoparticles (mPDA NPs) through a soft template method; the preparation method comprises the following steps: dissolving AB in an aqueous solution containing mesoporous polydopamine nanoparticles (mPDA NPs), uniformly mixing, carrying out centrifugal treatment, and collecting precipitate, so as to obtain AB-coated mPDA NPs; loading AB (at) mPDA NPs on the surface of micro-arc titanium oxide, and constructing on the titanium surface to obtain a hydrogen release coating HP-Mti, namely the titanium implant surface hydrogen sequential release soft tissue combination promoting coating. Based on the nano confinement effect, the hierarchical nanostructure limits the hydrolysis of AB, thereby prolonging the hydrogen production time. Meanwhile, the water contact angle is reduced due to the loading of the AB-coated mPDA nano-particles, so that the biocompatibility is favorably improved.

The application discloses a pure titanium nanometer scale oxide layer nanometer probe precise detection method, which comprises the following steps: S1, preparing a titanium sample to be measured, and pretreating the titanium sample to be measured to make the surface of the titanium sample to be measured smooth; S2, selecting multiple test points on the surface of the titanium sample to be measured and marking the test points, using a pressure head of a nano indentation instrument to make an indentation on the marked test points, and obtaining surface indentation data; S3, selecting multiple test points on the cross section of the titanium sample to be measured and marking the test points, using the pressure head of the nano indentation instrument to make an indentation on the marked test points, and obtaining cross section indentation data; S4, summing up the maximum contact depth in the surface indentation data of each test point and taking an average value, and marking the average value as a; summing up the maximum contact depth in the cross section indentation data of each test point and taking an average value, and marking the average value as b; and taking a difference between a and b to obtain an influence value of the oxide layer on the titanium surface. The application can simply and quickly evaluate the influence of the oxide layer on the titanium surface by using the nano indentation method.

This invention belongs to the field of biomass materials technology, specifically relating to a titanium-doped biochar, its preparation method, and its applications. In this invention, supercritical fluid is used for composite processing. Its unique high diffusion and low surface tension characteristics enable uniform distribution of the titanium source within the protein fibers and induce condensation reactions between hydroxyl groups on the titanium surface and carboxyl groups in the protein fibers within the supercritical system, forming high-density Ti-O-C chemical bonds. Furthermore, low-temperature thermal induction is performed based on the supercritical pre-swollen matrix structure to complete the ordered reconstruction of the carbon skeleton structure and the regulation of active sites, achieving in-situ self-doping of N and S while avoiding the TiO2 phase transformation. This further improves the stability and photocatalytic performance of the titanium-doped biochar, enabling visible light response.

The invention belongs to the technical field of composite nano materials, and particularly relates to a two-dimensional transition metal titanium carbide-platinum nano particle composite material and a preparation method and application thereof. The invention relates to a two-dimensional transition metal titanium carbide-platinum nanoparticle composite material. The two-dimensional transition metal titanium carbide-platinum nanoparticle composite material comprises a single layer of Ti < 3 > C < 2 > T < x > and platinum nanoparticles loaded on the single layer of Ti < 3 > C < 2 > T < x >, the single-layer Ti < 3 > C < 2 > T < x > is of a porous sheet-shaped structure, and the size is 0.5-5 [mu] m. The platinum nanoparticles in the obtained two-dimensional transition metal titanium carbide-platinum nanoparticle composite material can be uniformly loaded on the surface of the two-dimensional transition metal titanium carbide and are not easy to agglomerate; the two-dimensional transition metal titanium carbide-platinum nanoparticle composite material has anti-interference performance and long-term stability in biomolecule detection.

The invention discloses a preparation method of a titanium metal surface laser sintering rare earth metal modified polyether-ether-ketone composite material, and belongs to the field of dental implants. The invention aims to solve the technical problem of poor interface bonding property between polyether-ether-ketone and titanium metal. The method comprises the following steps: completely dissolving CeCl3 and urea in an ethanol water solution, immersing hydroxylated polyether-ether-ketone in the CeCl3 solution at room temperature, heating for reaction, cooling to room temperature, cleaning and drying to obtain cerium oxide modified polyether-ether-ketone powder; the surface of a titanium metal substrate is pretreated, the titanium metal substrate is placed in a forming cavity of additive manufacturing equipment, cerium oxide modified polyether-ether-ketone powder is formed in a powder feeding cavity under the protection of inert gas through a laser powder bed melting technology, heat preservation treatment is conducted after printing is finished, and then the method is completed. According to the method, a Ti-O-Ce bonding or CeTiO4 spinel structure is formed on the surface of cerium oxide and titanium, an interface inert layer is broken, chemical bond bonding of polyether-ether-ketone and a titanium matrix is achieved, and the interface bonding strength is remarkably improved.

The application relates to the technical field of dental implants, in particular to a trans-zygomatic implant and a processing technology thereof, and the processing technology comprises variable-distance multi-stage sand blasting and acid etching surface treatment on an anchoring part with threads of the trans-zygomatic implant and electrochemical polishing surface treatment on an extension part without threads. The trans-zygomatic implant is treated by variable-distance multi-stage sand blasting combined with acid etching, so that a uniform micron-level rough base and a multi-stage micropore structure can be formed on the titanium surface, osteoblast adhesion and differentiation are facilitated, the early bone combination speed is accelerated, the combination strength is improved, the early implant loosening risk is reduced, the extension part of the trans-zygomatic implant is treated by electrochemical polishing, a smooth surface can be obtained, plaque adhesion and bacterial colonization are greatly reduced, the implant peri-implantitis risk is reduced, and soft tissue adhesion is promoted; the dual optimization of bone anchoring and tissue adhesion is realized, and the long-term function and health of the trans-zygomatic implant under complex stress are guaranteed.

A liquid chromatography apparatus includes a diffusion-bonded separation column comprising a lower substrate comprising titanium, an upper substrate comprising titanium, and a titanium patterned foil disposed between the lower substrate and the upper substrate. The lower substrate, titanium patterned foil, and upper substrate are diffusion bonded together to form a fluid path extending from an inlet port to an outlet port, wherein walls defining the fluid path within the diffusion-bonded separation column include a titanium surface coating.

Provided are methods and apparatus for bonding metals. In an example, a provided method includes (i) disposing a layer of Vanadium onto a first Titanium surface of a first tangible object, (ii) placing a second Titanium surface of a second tangible object in direct contact with the layer of Vanadium, and (iii) imparting, using a sonotrode, compressive and shear forces to the first Titanium surface, the layer of Vanadium, and the second Titanium surface, to cause plastic deformation that bonds the first Titanium surface to the second Titanium surface.

The invention relates to a material assembling method for a titanium-steel composite plate raw material blank. The method comprises the steps that S1, raw materials are prepared, wherein the raw materials comprise a titanium plate, a steel plate and a frame; s2, the titanium surface is coated with an isolating agent, specifically, the single face, namely the titanium-titanium contact face, of the titanium plate is coated with the isolating agent; s3, titanium plate welding, wherein the two titanium plates are stacked with the separant face as the contact face, and the peripheries of the titanium plates are sealed and welded to form a separant sealing cavity; and S4, assembling the titanium plate and the steel plate: symmetrically assembling the steel plate, the welded titanium plate and the steel plate from top to bottom in sequence. And S5, welding and vacuumizing are conducted, specifically, the frame is arranged between the periphery of the upper steel plate and the periphery of the lower steel plate and connected in a welding mode, and the interior is vacuumized. According to the invention, the problem of joint surface pollution caused by the separant can be effectively avoided, so that the interface bonding strength and bonding rate of the titanium-steel composite plate are improved.

The invention relates to the technical field of medical materials, and particularly discloses a titanium surface composite coating with osteogenesis promoting and antibacterial functions. The micro-arc magnesium oxide coating is arranged on the surface of the titanium substrate; the chitosan coating is arranged on the surface of the micro-arc magnesium oxide coating; the chlorogenic acid is loaded in the chitosan coating; a magnesium-containing porous microstructure is constructed on the surface of a titanium substrate through a micro-arc oxidation technology, so that the biological activity and corrosion resistance of the coating are improved; furthermore, chitosan is used as a biocompatible carrier to load a traditional Chinese medicine active ingredient chlorogenic acid, so that the surface of the implant has excellent osteogenic differentiation promoting capability and broad-spectrum antibacterial property at the same time. Physical modification, biopolymer drug loading and traditional Chinese medicine active ingredients are combined, and the problems that a traditional titanium implant is high in surface biological inertness, infection is likely to be caused and osseointegration is poor are solved through the synergistic effect on the three aspects of the structure, the material and the biological function.

The device (100) of the present disclosure presents an innovative approach to oxidizing hydrocarbon molecules, vital for environmental remediation and industrial processes. It comprises an inner solid cylinder (102) featuring a capping mechanism to encapsulate hydrocarbons, preventing their release, and a strategically positioned titanium surface catalyst (106) for oxidation. An electrical stimulation module delivers electrical charges to the catalyst, promoting rapid oxidation reactions. Additionally, control mechanisms regulate electrical impulse application, ensuring optimal oxidation conditions. The device (100) offers enhanced efficiency and versatility for treating hydrocarbon contamination in various settings. Its advanced design integrates cutting-edge catalytic and electrochemical principles, providing a sustainable solution for mitigating environmental pollution and advancing industrial processes.

The application discloses a preparation method of a one-step coated abalone shell water-soluble matrix promoting bone-coated titanium material, which can be used in the field of bone repair. The method is as follows: dopamine is oxidized into polydopamine, the abalone shell water-soluble matrix is coated and co-deposited on the surface of titanium, and the modified titanium with the function of promoting bone is prepared by using the biomimetic technology, so that Ca / P is deposited. The modified titanium has the functions of promoting bone, strong interface bonding property of the modified titanium surface and natural tissue, good mineralization capacity, biocompatibility and the function of promoting bone, and is expected to become a new type of bone repair material.

The invention belongs to the technical field of preparation of titanium alloy pipe fittings from recycled coarse powder, and particularly relates to a low-cost method for preparing titanium alloy pipe fittings from recycled coarse powder, which comprises the following steps: firstly, recycling titanium alloy coarse powder with the particle size of more than 100 mu m, then exposing a fresh titanium surface through hydrogenation fragmentation by utilizing a hydrogenation dehydrogenation (HDH) technology, adsorbing oxygen in the atmosphere, and diffusing for solid solution; the O content of the powder is increased; interstitial O atoms can be subjected to pinning dislocation, so that the yield strength, tensile strength and hardness of sintered parts are remarkably improved, and low cost and high performance are realized (namely, the O content of powder is improved through HDH, and a basis is provided for good performance of subsequent parts); according to the preparation method, coarse powder with low utilization rate is recycled through a set of complete preparation process, the cost for preparing the titanium alloy pipe fitting is reduced, and meanwhile, the performance of the titanium alloy pipe fitting is improved.

A titanium superhydrophobic surface comprising a coating of a perfluorosilane on contiguous titania micrograins surrounded by crevices, the micrograins comprising a topography of nanopits shaped by contiguous peaks and valleys. The superhydrophobic surface has significantly increased hemocompatibility and enhanced antibacterial properties compared to an unmodified titanium surface. The increased hemocompatibility was confirmed by reduced platelet adhesion, reduced leukocyte adhesion, and reduced thrombus formation. The surface is prepared by a facile hydrothermal treatment of a titanium surface with sulfuric acid, leading to the formation of a unique micro-nano surface topography. The superhydrophobic surface was then achieved by coating the micro-nano titanium surface with a low energy silane using physical vapor deposition.

The invention belongs to the technical field of biomass materials, and particularly relates to titanium-doped biochar as well as a preparation method and application thereof. According to the method, the supercritical fluid is adopted for compounding, uniform distribution of a titanium source in the protein fiber can be achieved through the specific high diffusion and low surface tension characteristics of the supercritical fluid, a condensation reaction of titanium surface hydroxyl and protein fiber carboxyl in a supercritical system is induced, and high-density Ti-O-C chemical bonding is formed; on the other hand, low-temperature thermal induction is performed on the basis of a supercritical pre-swelling matrix structure, ordered reconstruction of a carbon skeleton structure and regulation and control of active sites are completed, N and S in-situ self-doping is achieved, meanwhile, TiO2 phase structure transformation is avoided, the stability and photocatalytic performance of the titanium-doped biochar are further improved, and visible light response is achieved.

The invention discloses a chargeable and dischargeable antibacterial polyimide coating as well as a preparation method and application thereof. The chargeable and dischargeable antibacterial polyimide coating is a chargeable and dischargeable antibacterial polyimide coating obtained by charging a polyimide film containing narrow needle-shaped structure polyimide and conductive carbon powder. The polyimide coating provided by the invention can be used as a medical titanium surface antibacterial coating, has excellent antibacterial performance after being charged, can be repeatedly charged to update the antibacterial performance, and also has good biocompatibility.

The invention discloses preparation and application of a non-covalent / covalent mixed Schottky junction photoelectric sensor. Bismuth oxychloride (Bi12O17Cl2) is loaded on the surface of halogenated titanium carbide (Ti3C2-Cl) in covalent and non-covalent modes, and due to the fact that bismuth oxychloride and halogenated titanium carbide (Ti3C2-Cl) have matched energy band structures, a formed Mott Schottky heterojunction can effectively promote photo-generated electron-hole separation, broaden the light response range and improve the light energy utilization rate and the photo-generated carrier separation efficiency. The photoelectrochemical sensor constructed by the invention realizes high-sensitivity detection of CIP in a wide linear range of 400 pM to 10 M, the detection limit is as low as 121.2 pM, and the photoelectrochemical sensor has high stability, reproducibility and interference resistance, and can be suitable for efficient detection of trace CIP in environment and food samples.

The present application belongs to the technical field of surface modification of biomedical materials, and specifically relates to a method for preparing a gradient-size nanowire coating on a medical titanium surface, comprising the following steps: first, titanium sheets are subjected to acid pickling pretreatment to remove the surface oxide layer, then sodium hydroxide solution is uniformly and slowly added dropwise, and a continuous-size nanowire coating is obtained through a gradient alkali etching method, laying a foundation for accurate screening of the size of the nanowire coating based on the functions of bone integration-related cells. In addition, compared with traditional orthogonal experiment screening materials, this gradient screening can realize accurate screening of the material structure, improve the screening efficiency, and the required equipment is simple, low in cost, and high in operability, and has high practicability.

The invention discloses a bone targeting in-situ bioactive coating implanted into a titanium surface as well as a preparation method and application of the bone targeting in-situ bioactive coating, and belongs to the technical field of biomedical materials. The coating takes an implanted titanium metal material as a matrix, and sequentially comprises a titanium dioxide nanotube loaded with bone targeting ions, a polydopamine middle layer and a polyanion amino acid molecule targeting layer from inside to outside, the preparation method comprises the following steps: (1) constructing a titanium dioxide nanotube; (2) carrying bone targeting ions by adopting a hydrothermal technology; (3) spin-coating a self-polymerization dopamine middle layer; and (4) in-situ grafting of a polyanion amino acid molecular targeting layer. The coating improves the biological activity of the implanted titanium alloy surface, controls the release of Ga < 3 + >, promotes the early adhesion of cells, accelerates the induction of the formation of hydroxyapatite, realizes the early in-situ rapid formation of bone tissues on the implanted titanium interface, and endows the surface with broad-spectrum antibacterial property. The invention provides a new thought for surface modification and biological functionalization of implanted titanium and alloy materials thereof.

The application provides a separation method and content determination method for titanium foreign matters in a lithium battery positive electrode material. Through the step design of material screening-metal titanium particle purification-metal titanium particle digestion-titanium content determination, with the aid of a specific mixed acid system, the digestion process is accurately controlled, the positive electrode material is effectively digested, and the metal titanium foreign matters are ensured not to be digested. Through the early passivation process, a dense oxide film mainly composed of titanium dioxide is rapidly formed on the surface of titanium, effectively preventing the internal titanium from continuing to react with nitric acid and hydrochloric acid, and the original form and content of the metal titanium foreign matters are maximally retained, so that the accurate determination of the content of the titanium foreign matters in the material is realized. Meanwhile, through the optimization of the sample pretreatment mode, the complex and high-cost operation steps are reduced, and the consumption of expensive reagents is reduced. The application provides a new detection idea and method, fills the gap in the related technical field, and promotes the development and application of the detection technology in the field.

The application discloses a preparation method of a medical Ti-Sn-Mo alloy coating on a pure titanium surface and relates to the technical field of titanium alloy industry. The Ti-Sn-Mo alloy coating is prepared by laser cladding technology, the wear resistance of the coating is improved, material wear and host reaction are reduced, the elastic modulus of the Ti-Sn-Mo alloy coating is reduced by introducing Mo elements, the Ti-Sn-Mo alloy coating is closer to human bones, and stress shielding is reduced. Different from traditional TC4 alloy, the Ti-Sn-Mo alloy coating does not contain toxic Al and V elements, the biocompatibility is improved, better metallurgical bonding is realized by laser cladding technology, porosity and inclusions are reduced, a fine microstructure is prepared by rapid heating and cooling, the wear resistance and hardness of the coating are improved, and the problems of the prior art, such as the large difference between the elastic modulus and human bones and the toxicity of Al and V elements to cells, are solved.

The invention provides a titanium surface low-intensity pulse ultrasonic response antibacterial repair-promoting double-component coating as well as a preparation method and application thereof, and belongs to the technical field of biomedical materials. The two-component coating is composed of two inorganic materials including calcium fluoride (CaF2) and magnesium silicide (Mg2Si), the two inorganic materials are mixed and coated on the surface of a titanium (metallic titanium or titanium alloy) matrix, and a firm composite coating is formed through two-stage heat treatment. The double-component coating has the double functions of resisting bacteria and promoting tissue repair; under the non-invasive stimulation of low-intensity pulsed ultrasound (LIPUS), a large number of antibacterial active substances can be instantly generated to efficiently kill pathogenic bacteria; meanwhile, CaF2 and Mg2Si in the coating gradually release bioactive ions such as Ca < 2 + >, Mg < 2 + > and Si-O anions under the action of LIPUS, and regeneration and repair of surrounding tissues (such as bone tissues and soft tissues) are promoted.

The invention provides preparation and application of a titanium surface / implant self-assembly coating, and relates to the technical field of high polymer materials. The preparation and application of the titanium surface / implant self-assembled coating specifically comprise the following preparation steps of S1, pretreatment and modification of a titanium substrate, S2, preparation of the self-assembled coating, S3, characterization of a test piece and S4, evaluation of cytocompatibility, and the prepared finished product is applied to promotion of early osseointegration of a titanium implant in a complex implantation microenvironment. The success rate and the stability of the implant are improved. CeNPs and EGCG are modified on the surface of the titanium implant through a layer-by-layer self-assembly (LBL) technology, and the CeNPs and EGCG on the surface of the prepared implant can be slowly released along with degradation of a sandwich-shaped coating, so that the antioxidant osteogenic activity is synergistically exerted, the osseointegration demand of an organism in a complex implantation microenvironment is met, and more possibilities are provided for early-stage osseointegration of the implant.

The application discloses a high-roughness titanium surface conductive layer and a preparation method thereof, and belongs to the technical field of metal surface processing and modification. 5 ~2×10 6 S / m, and is composed of titanium nitride-doped titanium dioxide; the conductive layer is in-situ grown on a titanium base and has hydrophilicity and corrosion resistance. The preparation method comprises the following steps: (1) acid etching treatment of titanium; (2) primary anodic oxidation of titanium; and (3) secondary anodic oxidation of titanium. The application can simplify the pretreatment process of titanium electrode preparation, reduce the production energy consumption of the titanium electrode, and improve the performance of the titanium electrode. The titanium base surface generating the conductive layer can be directly used in electrochemical application fields such as electroplating and electrodeposition.

The application discloses a forming process and a hot rolling device of a high-thermal-conductivity titanium-aluminum composite plate, and relates to the technical field of titanium-aluminum composite materials.The forming process comprises the following steps: S1, performing laser texturing on the surface of a TC4 alloy titanium plate to remove the oxide layer on the surface of the TC4 alloy titanium plate, and roughening the surface of the TC4 alloy titanium plate to Ra2.0-3.0 microns by laser texturing; S2, preparing a composite plate by hot-rolling compounding of the TC4 alloy titanium plate and a high-strength aluminum plate, and making the titanium surface of the composite plate face the ground; S3, after the hot-rolled composite plate, making the composite plate pass through guide rollers in an upwardly inclined manner and then discharge in an inclined downward manner; S4, cutting the discharged composite plate into a plurality of plates with the same size according to a set size, and making the plates be arched; and S5, cooling the plates, and the beneficial effects are that the oxide on the surface of the TC4 alloy titanium plate is removed and new titanium alloy is exposed by laser texturing, the metal combination and mechanical engagement of the titanium-aluminum interface are significantly enhanced, and the thermal conductivity and the combination strength of the composite plate are fundamentally improved.

The application discloses a process for reducing the iron and oxygen of titanium sponge in the technical field of titanium sponge production, which comprises the following steps: cleaning a reactor, assembling a titanium infiltration frame, adding titanium sponge for titanium infiltration, and assembling the reactor; putting the assembled reactor into a distillation furnace, increasing the temperature of the furnace to a certain temperature, and then baking the reactor; increasing the temperature of the distillation furnace to a specified temperature; rapidly increasing the temperature of the distillation furnace after constant temperature, and simultaneously performing vacuumizing to perform first titanium infiltration; taking out the titanium infiltration device after furnace cooling, disassembling the reactor. Assembling the reactor, leak detection after vacuumizing in a reduction furnace, and argon filling. Adding a small amount of liquid magnesium to assemble the reactor, increasing the temperature, and adding a small amount of titanium tetrachloride to perform second titanium infiltration. The reduction, distillation and crushing obtain the titanium sponge. The process in the application can remove the water adsorbed on the surface of the reactor and the large cover after cleaning and the water adsorbed on the surface of titanium used for titanium infiltration, and avoids the influence of oxygen and hydrogen on the titanium infiltration process.

The invention discloses a cementum-imitating ultrastructure titanium alloy surface modification method and application thereof, and belongs to the technical field of biomedical material surface modification.The cementum-imitating ultrastructure titanium alloy surface modification method comprises the steps that S1, pretreatment is conducted, specifically, a titanium base material is subjected to ultrasonic cleaning with distilled water and absolute ethyl alcohol in sequence; immersing into mixed acid of nitric acid and hydrofluoric acid, and shaking and pickling for 1-3 minutes; s2, anodic oxidation: taking a titanium sheet as an anode and an inert electrode as a cathode; the electrolyte is an ethylene glycol aqueous solution containing 0.1-0.5 wt% of ammonium fluoride; applying direct-current constant voltage, and performing anodic oxidation; and S3, post-treatment: cleaning with acetone, absolute ethyl alcohol and distilled water in sequence, and carrying out vacuum drying. The titanium surface ultrastructure constructed by the method is similar to a cementum microstructure; an approach and an anchoring point are provided for attachment and penetration of surrounding soft tissue collagenous fibers; and popularization, application and industrial production are facilitated.