79 results about "Titanium surface" patented technology

The invention discloses a method for laser-induced color texture pattern on titanium surface, comprising: step 1: grinding, polishing and cleaning the titanium alloy surface, drawing a pattern on the titanium alloy surface by using a laser, and continuously adjusting the parameters of the laser until a processing database in which the parameters of the laser and the color of the titanium alloy surface pattern are mutually correlated is obtained; step 2: using a colorimeter to measure and calibrate the color of the pre-drawn pattern with Lab values, calculating the color difference between the color of the pre-drawn pattern and each color in the processing database, and when the color difference is less than or equal to a predetermined value, selecting the parameters of the laser corresponding to the corresponding color for processing; the invention induces the generation of oxide film layers of different thicknesses and types on the titanium surface by a laser heat source with adjustable pulse width, makes the film layer present different colors through the interference, reflection and absorption of light, adjusts the spot size, controls the scanning speed, and is equipped with a high-speed galvanometer scanning system to realize the preparation of various fine patterns.

The invention relates to the technical field of metal surface treatment monitoring, and discloses a black titanium surface coloring intelligent monitoring system, which comprises a spectrum acquisition module, an environment disturbance acquisition module, an environment disturbance comparison module and the like. The spectrum acquisition module dynamically adjusts a sampling frequency and a wavelength range in combination with environmental disturbance parameters; the environment disturbance acquisition module acquires information such as a temperature gradient change rate and an environment humidity fluctuation rate, and the environment disturbance comparison module generates a comprehensive index according to the information and judges an environment disturbance level. And the equipment state acquisition and comparison module monitors internal operation parameters of the system, generates an equipment health index and deals with abnormity. The spectrum and model synchronization module matches and evaluates the coloring quality by using wavelet transform and a pre-training model, and the coloring abnormity analysis module identifies defects. In addition, the system is also provided with a dynamic calibration module. The system can accurately monitor black titanium surface coloring, and the production efficiency and the product quality are improved.

The invention aims at disclosing 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 composites.The forming process comprises the following steps that S1, laser texturing is conducted on the surface of a TC4 alloy titanium plate so as to remove an oxide layer on the surface of the TC4 alloy titanium plate, and the roughness of the surface of the TC4 alloy titanium plate is textured to Ra2.0 micrometers to Ra3.0 micrometers through laser; s2, the TC4 alloy titanium plate and the high-strength aluminum plate are prepared into a composite plate through a hot rolling composite technology, and the titanium face of the composite plate faces the ground; s3, the hot-rolled composite plate passes through a guide roller in an upward inclined mode and then is discharged in an inclined downward mode; s4, the discharged composite plate is cut into a plurality of plates with the same size according to the set size, and the plates are arched; the method has the beneficial effects that oxides on the surface of the TC4 alloy titanium plate are removed through laser texturing, new titanium alloy is exposed, metal bonding and mechanical meshing of a titanium-aluminum interface are remarkably enhanced, and the heat conduction performance and bonding strength of the composite plate are fundamentally improved.

The preparation method of the titanium alloy containing the rare precious metal elements comprises the following steps that raw materials are prepared, specifically, micro-particle sponge titanium with the particle size being 0.5-2 mm is included; rare precious metal powder; industrial alcohol; the particle size of the national standard grade sponge titanium is 3-12.7 mm; mixing the materials for the first time; s201, the surface of the micro-particle sponge titanium is wetted with alcohol and stirred; the micro-particle sponge titanium and rare precious metal powder are evenly mixed according to the mass ratio of (14-15): 1, the rare precious metal powder adheres to the micro-particle sponge titanium, and mixed powder is formed to serve as intermediate alloy; material mixing is conducted again, specifically, the intermediate alloy and the national standard grade sponge titanium are evenly mixed according to the preset mass ratio, and a pre-smelting alloy is obtained; the pre-smelted alloy is fed into a die cavity of a hydraulic machine to be pressed into an electrode block, and the pressure is 50-60 MN; a plurality of electrode blocks are welded into a consumable electrode in a vacuum plasma welding mode, and the pressure of a furnace chamber is 10000-25000Pa; and the consumable electrode is subjected to secondary smelting through a vacuum consumable smelting method, and the titanium alloy is obtained.

The invention relates to an anti-aging MPP (modified polypropylene) single-wall corrugated pipe and a preparation method thereof, and belongs to the technical field of high polymer materials, and the anti-aging MPP single-wall corrugated pipe is prepared from the following raw materials: polypropylene resin, modified nano titanium dioxide, a toughening agent, a defoaming agent, talcum powder and a microencapsulation antioxidant. Wherein the modified nano titanium dioxide is prepared by coating the surface of the nano titanium dioxide with an amorphous silicon dioxide layer and synchronously doping zinc oxide quantum dots, and after the modified nano titanium dioxide is added, the resistance effect of the corrugated pipe on ultraviolet radiation can be remarkably enhanced, aging is delayed, and the physical property stability is improved. The microencapsulated antioxidant is formed by wrapping an antioxidant 1010 with a polyurea formaldehyde shell layer, and the shell layer contains amino groups, so that the antioxidant can be slowly released to inhibit oxidation and aging, the compatibility and stability of the material can be enhanced, the comprehensive performance of the corrugated pipe is finally effectively improved, and the service life of the corrugated pipe is prolonged.

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.

A method for in situ construction of a photoresponsive ternary heterostructure on a titanium surface is disclosed. This method addresses the limited effectiveness of existing single heterostructure types in separating photogenerated holes and electrons. The method includes: 1. micro-arc oxidation; 2. microwave hydrothermal treatment; 3. ion exchange treatment; and 4. heat treatment. This method is used to in situ construct a photoresponsive ternary heterostructure on a titanium surface.

A method for in situ construction of a wide-band visible / ultraviolet dual heterostructure of titanium dioxide @ sodium titanate and titanium dioxide @ tungsten trioxide on a titanium surface, relating to methods for constructing dual heterostructures. The present invention addresses the problem of existing TiO2 photocatalysts having poor degradation capabilities for organic dye wastewater and being non-recyclable. The method includes: 1. micro-arc oxidation treatment; 2. microwave hydrothermal treatment; 3. ion deposition exchange treatment; and 4. de-crystallization treatment. The present invention is used to in situ construct a wide-band visible / ultraviolet dual heterostructure of titanium dioxide @ sodium titanate and titanium dioxide @ tungsten trioxide on a titanium surface.

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.

The present invention provides a preparation method and application of an antibacterial coating on a titanium surface, belonging to the technical field of metal surface treatment. The preparation method includes: pickling the surface of a titanium material to obtain a pickled titanium material; alkalizing the pickled titanium material in an alkaline solution to form a sodium titanate layer and obtain an alkalized titanium material; vertically placing the alkalized titanium material in a reaction solution containing an iron source and a sulfur source for a hydrothermal reaction to obtain a titanium material with an FeS2 coating; wherein, the iron source in the reaction solution includes any one of ferric chloride, ferrous gluconate, ferrous sulfate, and ferric nitrate, and the sulfur source includes any one of tetraethylthiuram disulfide, thiourea, and thioacetamide. This method prepares a dense-structured FeS2 coating with good bonding force to the pure titanium substrate on the surface of pure titanium by using the vertical solvothermal method, which can improve the antibacterial performance of the pure titanium material and further enhance the biocompatibility of the medical pure titanium material.

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 provides a preparation method and application of a titanium surface antibacterial coating, and belongs to the technical field of metal surface treatment.The preparation method comprises the steps that the surface of a titanium material is subjected to acid pickling, and an acid-pickled titanium material is obtained; the acid-washed titanium material is placed in alkali liquor to be alkalized, a sodium titanate layer is formed, and an alkalized titanium material is obtained; vertically placing the alkalized titanium material in a reaction solution containing an iron source and a sulfur source, and carrying out a hydrothermal reaction to obtain a titanium material containing a FeS2 coating; wherein the iron source in the reaction solution comprises any one of ferric chloride, ferrous gluconate, ferrous sulfate and ferric nitrate, and the sulfur source comprises any one of tetraethylthiuram disulfide, thiourea and thioacetamide. According to the method, a FeS2 coating which is compact in structure and good in bonding force with a pure titanium substrate is prepared on the pure titanium surface through a vertical solvothermal method, the antibacterial performance of the pure titanium material can be improved, and then the biocompatibility of the medical pure titanium material is improved.

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 provides a preparation method of an antibacterial and antioxidant TiO2-CMO composite coating triggered by near-infrared light. Firstly, a porous TiO2 substrate is formed on the surface of pure titanium through micro-arc oxidation, a spongy micro-nano layered structure is constructed through an alkali liquor hydrothermal method, and then the performance is optimized through annealing treatment. On the basis, CMO NPs nanoparticles are loaded by utilizing a polymerization reaction of chitosan oligosaccharide and ammonium molybdate, so that the layered porous TiO2-CMO composite coating is formed. The coating can kill more than 50% of adhesion bacteria at normal temperature, the antibacterial rate is increased to 98% when the coating is irradiated by near-infrared light, and meanwhile, the coating shows excellent oxidation resistance, biocompatibility and anti-inflammatory / angiogenesis promoting activity. By integrating micro-arc oxidation, hydrothermal reaction, annealing treatment and nano-particle loading technologies, multiple biological functions are successfully given to the surface of the titanium implant, and an innovative solution is provided for surface modification of orthopedic implant materials.

The invention discloses a method for in-situ construction of a ternary heterostructure with light response on a titanium surface, and relates to a method for constructing a ternary heterostructure. The invention aims to solve the problem that the existing single heterostructure type has a limited effect on separation of photo-generated holes and electrons. The method comprises the following steps: 1, micro-arc oxidation treatment; 2, microwave hydrothermal treatment; 3, ion exchange treatment; and 4, heat treatment. The method is used for in-situ construction of the ternary heterostructure with the light response on the titanium surface.

A titanium surface treatment method for manufacturing a polymer-titanium joint structure having excellent bond strength is provided. A titanium surface treatment method for bonding with a polymer composite includes a first etching step wherein the titanium surface is etched by acidic solution; a first surface treatment step wherein the titanium surface is treated by ultrasonic wave; a second etching step wherein the titanium surface is etched again by acidic solution; a second surface treatment step wherein the titanium surface is treated again by ultrasonic wave; a first silane coupling treatment step wherein the titanium surface is treated by ultrasonic wave; a third surface treatment step wherein the titanium surface is treated again by ultrasonic wave; and a second silane coupling treatment step wherein the titanium surface is treated by anodic oxidation.

The invention discloses a method for in-situ construction of a wide-range wavelength visible / ultraviolet titanium dioxide-sodium titanate and titanium dioxide-tungsten trioxide dual heterostructure on the surface of titanium, and relates to a method for constructing the dual heterostructure. The invention aims to solve the problems that the existing TiO2 photocatalyst is poor in organic dye sewage degradation capability and cannot be recycled. The method comprises the following steps: 1, micro-arc oxidation treatment; 2, microwave hydrothermal treatment; 3, ion deposition exchange treatment; and 4, decrystallization and crystallization treatment. The method is used for in-situ construction of a wide-range wavelength visible / ultraviolet titanium dioxide-sodium titanate and titanium dioxide-tungsten trioxide dual heterostructure on the surface of titanium.

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 present invention provides a surface-modified medical titanium material with antibacterial effect, a preparation method and an application thereof, and belongs to the technical field of surface modification of metal materials. The surface-modified medical titanium material of the present invention is modified on the surface of pure titanium to achieve antibacterial effect, specifically by using gold nanoparticles as a carrier to load polyhexamethylene biguanide hydrochloride, thereby obtaining a modified titanium material with both antibacterial effect and extremely low cytotoxicity. The preparation method of the surface-modified medical titanium material comprises the following steps: using piranha lotion to obtain a plurality of hydroxyl functional groups on the titanium surface, then using 3-aminopropyltrimethoxysilane for grafting and loading, and then using gold nanoparticles and polyhexamethylene biguanide hydrochloride respectively to obtain a titanium modified material loaded with gold nanoparticles and polyhexamethylene biguanide hydrochloride through electrostatic adsorption. The pure titanium modified material prepared by the present invention has a significant antibacterial effect and has no toxic effect on cells, and can effectively prevent and treat postoperative infection of titanium implants.

The invention discloses a method for solving tungsten and titanium corrosion residues of an on-chip thin-film resistor, and belongs to the field of semiconductor chip manufacturing, and the method comprises the following steps: firstly, etching most tungsten and titanium on a prepared metal and thin-film resistor interconnected silicon wafer by using hydrogen peroxide, which is equivalent to main etching; wherein the thin-film resistor is provided with a tungsten-titanium barrier layer; secondly, carrying out wet-process organic cleaning to remove residual reaction byproducts on the tungsten-titanium surface; and finally, removing residual tungsten and titanium by using hydrogen peroxide, which is equivalent to over-etching. Compared with the prior art, the method provided by the invention is high in operability, and a conventional wet process acid tank can meet process requirements; the cost is low, and the used chemical corrosive liquid and special gas are common materials for a semiconductor integrated circuit production line; and the application prospect is wide, and the corrosion of the chromium-silicon thin-film resistor metal interconnection layer can be completed in the manufacturing process of an analog integrated circuit.

The utility model discloses a biosensor and a sensing system with a high-density loading function, which comprise an optical fiber body, a sensing area is formed on the optical fiber body, and a gold film layer, a titanium boride and gold nanoparticle film layer are respectively attached to the surface of the sensing area from inside to outside. According to the utility model, through the design of the gold film-titanium boride film-gold nanoparticle composite structure, the surface electric field intensity of the gold film is improved by utilizing the high carrier mobility and high light absorptivity of titanium boride, so that the sensitivity of the sensor is improved; by utilizing mutual coupling of titanium boride surface plasmon polaritons and local plasmon polaritons generated by the gold nanoparticles, an enhanced local electric field is generated between a titanium boride film and the gold nanoparticles, so that the interaction between surface plasmon waves and a to-be-detected substance is enhanced, the detection sensitivity is improved, the gold nanoparticles provide high-density probe load, and the detection sensitivity is improved. According to the utility model, the composite structure improves the detection range and the application scene through dielectric-plasma cooperative response.

The invention discloses an environment-friendly residual titanium composite cleaning agent and a use method thereof, and belongs to the technical field of titanium recovery. In order to solve the problems of an existing residual titanium cleaning process, the environment-friendly residual titanium composite cleaning agent and the cleaning use method are developed, the environment-friendly residual titanium composite cleaning agent is a mixed aqueous solution of caustic alkali and Na4P2O7, the concentration of the caustic alkali is 10-50 g / L, and the concentration of the Na4P2O7 is 10-40 g / L; under the ultrasonic condition, the composite cleaning agent is used for cleaning residual titanium, and then water washing and drying are conducted. The caustic alkali and the Na4P2O7 are compounded, the dosage of the caustic alkali and the dosage of the Na4P2O7 are optimized, efficient oil removal and impurity removal of the residual titanium are achieved under the low alkalinity through the synergistic effect of saponification and microwave dispersion, the content of pollutants on the surface of the residual titanium is remarkably reduced, the removal rate of the element O of the residual titanium is larger than or equal to 60%, the removal rate of the element N is larger than or equal to 97%, and the removal rate of the element C is larger than or equal to 98%; the method has the advantages of low cost, simple operation, environmental friendliness and the like.

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.

The invention discloses an osteogenesis-promoting and anti-infection difunctional porous metal antibacterial coating material based on a bimetal ion electroplating and electrolytic pore-forming technology and a preparation method of the porous metal antibacterial coating material. The preparation method comprises the following steps: 1) ultrasonically cleaning a titanium substrate by using an environment-friendly degreasing agent and deionized water to remove impurities and chemical films on the surface of titanium; 2) forming a copper transition layer on the surface of the substrate by using a chemical deposition process; 3) designing a Cu < 2 + > / Mg < 2 + > composite electrolyte formula, and further introducing a copper-magnesium composite coating on the surface of the transition layer in combination with a bimetal ion electroplating process; (4) an alkaline stripping solution is designed for electrolytic stripping of magnesium, and a porous copper coating is obtained; and (5) a sample is soaked in a blood vessel promoting medicine, and after ultrasonic soaking, low-temperature nitrogen drying, dark vacuum packaging and irradiation sterilization are conducted, the required porous copper coating material with the osteogenesis promoting and anti-infection functions is obtained. The coating material can induce cell adhesion and ingrowth at the same time, synergistically promote bone formation, and opens up a brand new strategy for bone repair.

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.

The present invention discloses a titanium implant surface coating that promotes bone integration and a preparation method thereof, wherein a hydrogel coating is constructed on the titanium surface by initiating free radical polymerization through ultraviolet-triggered surface catalysis. The present invention constructs a hydrogel coating on the titanium implant surface, and loads two drugs that can induce macrophages to polarize to M1 and M2 types respectively by means of swelling absorption and reversible chemical bonds, thereby achieving precise induction of the sequential M1 / M2 polarization of macrophages accumulated at the bone-titanium interface, thereby achieving the synergistic effects of antibacterial, bone tissue healing, inhibition of fibrosis and promotion of bone integration.

Chemical treatment methods have been identified as a simple and effective means of improving the bonding between injection-molded polymers and titanium surfaces. This method forms an oxide layer on the titanium surface, which includes layered double hydroxides. The layered double hydroxides both increase the bonding strength and minimize air or water leakage. This method enables the use of titanium alloys combined with injection-molded polymer structures in robust, lightweight, and waterproof enclosures for consumer electronics.