230 results about "Porous titanium" patented technology

The invention discloses a porous titanium-based implant with a photo-thermal surface and a preparation method and application of the porous titanium-based implant, and belongs to the technical field of biomedical materials. The preparation method comprises the steps that a porous titanium substrate is prepared through 3D printing, then flowing acid etching treatment and anodic oxidation treatment are conducted in sequence, then the porous titanium substrate is placed in photo-thermal coating dispersion liquid for reaction, cleaning and drying are conducted, and the porous titanium-based implant with the photo-thermal surface is obtained. The photo-thermal coating dispersion liquid is obtained by dispersing MXene-ZnO composite particles in a dopamine hydrochloride solution. The porous titanium-based implant provided by the invention can be rapidly heated to a proper temperature under the irradiation of near-infrared light, and has good antibacterial, anti-tumor and osteogenesis promoting properties and biocompatibility.

The invention discloses a near-infrared light response titanium-based implant as well as a preparation method and application thereof, and belongs to the technical field of medical materials. The near-infrared light response titanium-based implant provided by the invention comprises a porous titanium substrate, the TiO2 nanotube array is formed on the surface of the porous titanium substrate; the first photo-thermal coating layer is formed on the TiO2 nanotube array; the second photo-thermal coating is formed on the first photo-thermal coating; wherein the first photo-thermal coating is a ZIF-8 coating; and the second photo-thermal coating is a carbon nanotube coating. Through the double-layer photo-thermal system design of the ZIF-8 coating, the photo-thermal conversion efficiency is greatly improved, the controllable photo-thermal response capacity, the long-acting antibacterial and anti-tumor capacity and the dynamic osseointegration capacity are achieved, and the excellent osteosarcoma treatment effect is achieved.

The invention discloses a BDD electrode material and a preparation method thereof. The preparation method comprises the following core steps: pretreating the surface of a porous titanium substrate; depositing a nanoscale TiN film layer on the surface of the pretreated porous titanium substrate in advance; depositing a layer of single-walled carbon nanotube network on the TiN thin film layer by using an electrophoretic deposition method; growing a highly-doped BDD layer on the single-walled carbon nanotube network by adopting a plasma enhanced chemical vapor deposition technology; repeating the two steps to form a multi-layer SWCNT / BDD composite structure, and controlling the thickness of the multi-layer SWCNT / BDD composite structure to be 1-50 microns; and finally, depositing a low-doped BDD active layer with the thickness of 1-5 microns by adopting a hot filament chemical vapor deposition (HFCVD) technology. According to the pulse laser assisted preparation process provided by the invention, the femtosecond laser pulse is introduced to replace traditional plasma treatment, so that the process flow is simplified, and the efficiency is improved; according to the technology, the process is simplified, the quality of the TiN film is improved through accurate energy input, and a new way is opened up for further improving the performance of the BDD electrode.

The invention discloses a preparation method of a noise-reducing anti-corrosion multifunctional coating, which comprises the following steps: mixing a polydimethylsiloxane prepolymer with a curing agent, casting on a glass sheet, curing, demolding to obtain a film substrate, and carrying out laser perforation treatment on the film substrate to obtain a low-frequency noise-reducing film substrate; taking the low-frequency noise reduction film substrate as a directional receiving plane, and performing electrostatic spinning treatment to obtain the low-frequency noise reduction film; uniformly mixing aliphatic isocyanate, polyether polyol, a chain extender, a catalyst, a conductive filler, a heat-conducting filler, porous titanium dioxide, a defoaming agent, a dispersing agent and a latent curing agent, and treating to obtain an anti-corrosion damping coating; the surface of a target base body is sequentially coated with the anti-corrosion damping coating, the low-frequency noise reduction film and the anti-corrosion damping coating, and the noise reduction and anti-corrosion multifunctional coating is obtained; the problems that in the prior art, due to separation of low-frequency noise reduction and anti-corrosion functions, construction is complex, cost is high, the effect is limited, and signal transmission quality and equipment durability are difficult to consider at the same time are solved.

Disclosed in the present application are a negative electrode material and a preparation method therefor, a negative electrode plate and a battery. The negative electrode material has a core-shell structure, wherein the inner core is boron-doped graphite, and the shell comprises porous titanium oxide, amorphous carbon and a conductive agent. By coating the boron-doped graphite with the shell comprising the porous titanium oxide, the amorphous carbon and the conductive agent, all the components cooperate with each other, such that not only is the ion / electron transport rate of the negative electrode material significantly improved, and the conductivity improved, but intercalation of lithium ions of a lithium battery, which is formed by the negative electrode material, can also be improved, the loss of irreversible capacity of the battery is reduced, and the first efficiency and rate capability of the battery are improved. Especially, due to the use of the porous titanium oxide, the structure of the negative electrode material is also more stable, thereby significantly improving the cycle performance of the battery.

The invention discloses a titanium-based implant with antibacterial and osteogenesis-promoting properties as well as a preparation method and application thereof, and belongs to the technical field of crossing of biomedical materials and biomedicine. The selective laser melting porous titanium alloy is used as a matrix, micro-arc oxidation and hydro-thermal treatment are utilized, and the multifunctional composite coating with the antibacterial function and the osteogenesis promoting function is constructed on the surface of the selective laser melting porous titanium alloy; the microstructure and the biological performance of the coating are regulated and controlled by doping functional elements, so that the antibacterial performance and the osteogenesis promoting performance of the coating are optimized.

The invention relates to the field of adsorption materials, and provides a preparation method of a multi-dimensional layer adsorption material for wastewater treatment. Firstly, a titanium-containing precursor solution is prepared through an ice template method, and an oriented porous titanium dioxide precursor framework is formed; and then, carrying out high-temperature calcination to obtain the columnar porous titanium dioxide adsorption material. Then, in-situ growth of an iron-containing metal organic framework (MOF) nanowire is carried out in the pore channel of the titanium dioxide adsorption material, and directional growth of the nanowire is realized by controlling the concentration of metal salt, a solvent system and magnetic field induction. And finally, multi-stage purification and structure stabilization treatment are adopted, so that the mechanical stability and the adsorption performance of the material are improved. By optimizing the pore structure and MOF loading, the adsorption capacity and degradation efficiency of the material to pollutants are improved, the problems that a traditional material is insufficient in mechanical strength and poor in stability are solved, and the material is suitable for efficient wastewater treatment.

The invention discloses a photo-thermal-electric coupling titanium-based implant as well as a preparation method and application thereof, and belongs to the technical field of biomedical materials. The photo-thermal-electric coupling titanium-based implant provided by the invention comprises a porous titanium substrate and a hydrogel layer, the surface of the porous titanium substrate is of a TiO2 nanotube array structure; up-conversion nanoparticles and g-C3N4 nanoparticles are arranged between the porous titanium substrate and the hydrogel layer, and the up-conversion nanoparticles are NaYF4 up-conversion nanoparticles co-doped with Yb < 3 + > and Er < 3 + >; carbon nanotubes and medicinal active ingredients are loaded in the hydrogel layer. According to the titanium-based implant, collaborative coupling in light-heat-electricity multi-energy forms is achieved, the titanium-based implant is endowed with the integrated function of light response, heat conversion, electric signal conduction and local treatment, and an integrated solution with structural supporting, biological activity regulation and treatment effects is provided for bone tissue defect repair.

The invention discloses an anode porous transmission layer for PEM water electrolysis hydrogen production and a preparation method of the anode porous transmission layer. The preparation method comprises the steps that firstly, a porous titanium plate and a titanium mesh are washed and dried after being subjected to acid pickling; secondly, absolute ethyl alcohol, polyvinyl butyral and titanium powder are evenly mixed to be prepared into slurry, and the slurry is sprayed to the two sides of the dried titanium mesh; and 3, stacking the porous titanium plate and the titanium mesh sprayed with the slurry, and forming metallurgical bonding through vacuum diffusion welding to obtain the anode porous transmission layer. The porous titanium plate and the titanium mesh are metallurgically bonded to prepare the anode porous transmission layer, the platinum plating amount is effectively reduced and the catalyst utilization rate is improved by regulating and controlling the thickness and the pore structure of the porous titanium plate and the plate-mesh stacking mode, and the gas-liquid transmission efficiency of the anode porous transmission layer is improved; and the anode porous transmission layer with strong mechanical support and high gas-liquid transmission efficiency is obtained, is suitable for PEM water electrolysis hydrogen production, and meets the development requirements of high efficiency and low cost of hydrogen production through renewable energy source and PEM water electrolysis coupling.

The invention belongs to the technical field of biomimetic materials, and discloses a titanium alloy implant surface biomimetic coating and a preparation method thereof.The biomimetic coating comprises a porous titanium support layer, a micron-sized porous titanium layer is prepared through plasma spraying, and then nano-hydroxyapatite is doped to improve osteoinductivity; the graphene enhancement layer is modified, a graphene oxide film is electrochemically deposited, the graphene oxide film and the titanium substrate are covalently bonded through a silane coupling agent, and strontium ions are loaded to promote osteogenic differentiation; an antibacterial active layer and in-situ reduced graphene oxide form a three-dimensional network conductive structure, tantalum-doped carbon nitride quantum dots are loaded through ultrasonic dispersion and embedded between graphene layers to form an antibacterial phase, and then magnesium silicate nanowires are subjected to hydrothermal growth to form a bioactive phase. Through triple bionic design of porous titanium, ion release / photo-thermal response and PDA adhesion, the bone bonding strength, antibacterial property, wear resistance and corrosion resistance of a coating interface are improved.

The invention discloses a low-temperature-resistant lithium iron phosphate positive electrode material and a preparation method thereof. The low-temperature-resistant lithium iron phosphate positive electrode material comprises the following raw material components in parts by weight: 90-120 parts of a lithium iron phosphate active material, 10-15 parts of a conductive agent, 8-12 parts of a binder, 5-8 parts of an additive and 60-70 parts of a solvent, the lithium iron phosphate active material is lithium iron phosphate coated with a carbon layer on the surface, and at least one metal element of aluminum, magnesium, chromium, vanadium and cobalt is doped in the lithium iron phosphate active material. The additive comprises nitrogen-doped carbon fibers compounded with titanium dioxide and titanium dioxide fibers coated with a polypyrrole layer; wherein the titanium dioxide fiber coated with the polypyrrole layer is obtained by firstly loading a first pyrrole monomer on a porous titanium dioxide fiber and then polymerizing with a second pyrrole monomer. The low-temperature-resistant lithium iron phosphate positive electrode material disclosed by the invention has excellent low-temperature resistance and conductivity, and the electrochemical performance of a battery at a low temperature can be improved.

The invention relates to the technical field of automobile essence preparation, and particularly discloses automobile essence capable of removing formaldehyde and releasing anions and a preparation method of the automobile essence. Comprising the following raw materials in parts by weight: 500-600 parts of deionized water, 18-24 parts of a negative ion release enhancing component, 12-20 parts of an aldehyde removing component, 30-40 parts of absolute ethyl alcohol, 8-14 parts of a dispersing agent, 14-18 parts of phenoxyethanol, 22-26 parts of an initiator solution and 6-10 parts of citral. A negative ion release enhancing component and a formaldehyde removal component are added, the negative ion release enhancing component is prepared by modifying core-shell particles with a silane coupling agent, the outer layer of each core-shell particle is of a porous titanium dioxide structure, the inner core of each core-shell particle is modified electrical powder, and the formaldehyde removal component is prepared by carrying out a ring-opening esterification reaction on sodium alginate and allyl glycidyl ether, so that the formaldehyde removal effect is improved. And then carrying out chemical cross-linking with hydroxypropyl acrylate and methacrylic acid, thereby coordinating and enhancing the formaldehyde removal capability, the anion release capability and the antibacterial effect.

The invention relates to the field of coatings, and discloses a high-strength, breathable and waterproof non-woven fabric coating. The coating is formed by applying a composite modified coating on a non-woven fabric base layer and drying the coating. The composite modified coating comprises: waterborne polyurethane, a modified additive, a leveling agent, a defoamer, a thickener, a film-forming aid and deionized water. The modified additive is prepared by grafting modified mesoporous titanium dioxide and modified graphene oxide with isocyanate propyl triethoxysilane. The modified mesoporous titanium dioxide is formed by aldehyde-modifying mesoporous titanium dioxide with 3-aminopropyl triethoxysilane and glutaraldehyde and then grafting pentaethylenehexamine. The modified graphene oxide is formed by modifying graphene oxide with zinc acetate dihydrate. The composite modified coating is prepared by adding the modified additive and compounding the composite modified coating with a non-woven fabric base material. The prepared non-woven fabric coating has good hydrophobicity, high tensile strength and elongation at break, and excellent antibacterial performance.

The invention relates to a porous titanium-iron-zirconium-based hydrogen storage alloy block and a preparation method thereof, the alloy block is an alloy block capable of circularly absorbing and releasing hydrogen at normal temperature, and pores and fresh surfaces without hindering hydrogen absorption are uniformly distributed inside and on the surface of the alloy block; the alloy block body comprises a Zr3Fe phase and a TiFe phase; the pores comprise three-dimensional communicating pores and isolated closed pores, and the isolated closed pores account for 1.0%-5.0% of the volume of the whole pores; and the porosity of the alloy block body is 10%-50%. A one-step sintering method is adopted, the process is simple and convenient, the cost is low, the problem that components are not uniform in a smelting method is solved, and part of holes can be defined after sintering necks are formed among powder in the sintering process. And meanwhile, the dual effects of a chloride pore-forming agent and a deoxidizing agent are fully exerted, spontaneous deoxidation is performed in the sintering process, a porous structure is formed, and the hydrogen absorption and desorption dynamic performance of an alloy block is improved through cooperation with Zr3Fe generated in situ in the material.

The invention provides a polyurethane coating which is a double-component polyurethane coating. The double-component polyurethane coating comprises a component A and a component B. The component A is composed of the following components in parts by weight: 120-180 parts of waterborne polyurethane acrylate, 40-60 parts of a waterborne polyurethane / boron nitride compound, 2-5 parts of a photoinitiator, 0.5-3 parts of an auxiliary agent and 40-70 parts of water. The component B is prepared from the following components in parts by weight: 5 to 10 parts of porous titanium dioxide loaded with copper ions or zinc ions and 90 to 100 parts of ethanol. According to the wear-resistant light-cured polyurethane coating provided by the invention, step-by-step layered coating is carried out on the surface of a base material, and a wear-resistant polyurethane coating is obtained.

The application provides a preparation method of a high-performance porous titanium-based intermetallic compound filter and relates to the technical field of filter preparation.The method comprises sequentially performing titanium raw material hydrogenation, micron-sized titanium hydride powder preparation, mixed powder preparation, mixed powder dehydrogenation alloying, micron-sized alloy powder preparation, cold isostatic forming mold preparation of the porous titanium-based intermetallic compound filter, titanium-based filter compact preparation and porous titanium-based intermetallic compound filter preparation.The application uses off-grade titanium as a matrix raw material, adds alloying elements such as aluminum and iron, combines the hydrogenation-dehydrogenation process with high-energy ball milling, and then realizes near forming of the porous titanium-based intermetallic compound filter through cold isostatic pressing and vacuum sintering.The prepared filter has high porosity, uniform pore size distribution and excellent corrosion resistance, can be used stably for a long time in a high-temperature and strong-corrosion environment, can realize efficient and high-precision purification of titanium tetrachloride, and is beneficial to industrial large-scale production and popularization.

A porous titanium sheet configured to function as an anode side gas diffusion layer of a proton exchange membrane (PEM) electrolyzer is formed by a powder technique, such as tape casting or powder metallurgy.

To provide an electrolysis method for water, a manufacturing method for hydrogen, and a manufacturing method for a cell of a PEM type water electrolysis apparatus, in which a titanium porous body within the cell has a relatively smooth surface on an electrolyte membrane side, has air permeability or liquid permeability, and can exhibit relatively high electrical conductivity.SOLUTION: An electrolysis method for water according to the present invention is a method for water electrolysis using a PEM type water electrolysis apparatus comprising a cell including a stack comprising a cathode, an electrolyte membrane, a porous transport layer, and an anode, where the porous transport layer has a titanium porous body, where, at a surface of the titanium porous body facing the electrolyte membrane, an average area of pores opening into the surface is 5 μm2 or more and 45 μm2 or less, where a standard deviation of the area of the pores is 90 μm2 or less, where a number of the pores existing within a rectangular region having an area of 22,000 μm2 and an aspect ratio of 4:3 is 120 or more, and where the PEM type water electrolysis apparatus is used with a pressure acting in a stacking direction of the cathode, the electrolyte membrane, the porous transport layer, and the anode being 6 MPa or more at a time of assembling the cell.SELECTED DRAWING: None

The application provides a TPMS porous titanium-based composite structure based on selective laser melting and a preparation method thereof, relates to the technical field of titanium-based composite materials, and the method takes TC4 titanium alloy powder as a matrix, introduces TiB2 ceramic particles as a reaction precursor, uses high-energy laser action to induce in-situ reaction of TiB2 and the titanium matrix in the selective laser melting process, and generates TiB reinforcing phases; on the basis, a porous structure with periodic continuous curved surface characteristics is constructed by combining a three-period minimal surface structure design method, and the synergistic regulation of material performance and structural performance is realized; it is verified that by regulating process parameters such as laser power, scanning speed and scanning interval, the stable forming of the TPMS porous structure can be realized, and the TiB reinforcing phases are uniformly distributed in the structural matrix; the prepared structure has good mechanical response characteristics while keeping high forming precision, and presents stable deformation behavior and continuous energy absorption process under the action of compression load.

The present invention belongs to the technical field of functional semiconductor materials, and particularly relates to a titanate nanofiber material, a preparation method thereof and an application. The preparation method of the titanate nanofiber material of the present invention comprises the following steps: (1) uniformly mixing a block copolymer, a titanium source and a solvent to obtain a precursor spinning solution; (2) electrospinning the precursor spinning solution to obtain precursor nanofibers, and calcining the precursor nanofibers to obtain porous titanium oxide nanofibers; (3) adding the porous titanium oxide nanofibers into an alkali metal hydroxide solution, and heating under ultrasonic conditions to obtain the titanate nanofiber material. The titanate nanofiber material of the present invention presents a multi-level structural morphology feature, and has advantages such as a large specific surface area, a high porosity and a large number of active sites.

The invention relates to the technical field of polymer coatings, in particular to a solvent-free permeation-resistant anti-corrosion polymer coating and a preparation method thereof. The invention relates to a preparation method of a solvent-free permeation-resistant anti-corrosion polymer coating. The preparation method comprises the following steps: preparation of an MXene nanosheet, preparation of a modified MXene filler, preparation of a slow-release corrosion inhibitor and preparation of a polymer coating. The double modified MXene and the slow-release corrosion inhibitor are adopted to synergistically improve the corrosion resistance of the coating. Modified MXene is subjected to intercalation modification by tannic acid and phytic acid, so that the modified MXene has physical barrier and chemical corrosion inhibition characteristics, the compatibility with a resin interface is enhanced, and the permeation resistance of a solvent-free coating is improved; according to the slow-release corrosion inhibitor, porous titanium-based oxide is used for loading MBT, slow release is triggered when the coating is damaged, active repairing is achieved, the pain point that a traditional coating is damaged and fails is solved, and the corrosion resistance in the severe environment is greatly improved.

The invention belongs to the technical field of medical materials, and discloses a novel titanium-based implant material with oxygen-releasing, antibacterial and osteogenesis-promoting properties and a preparation method of the novel titanium-based implant material. The titanium-based implant material comprises a titanium substrate and calcium peroxide on the surface of the titanium substrate. The invention provides a method for modifying a compact or porous titanium-based implant material by using calcium peroxide. The characteristic that calcium peroxide reacts with water to release oxygen, hydrogen peroxide and calcium ions and the biological activity of calcium ions in the aspect of bone repair enable the titanium-based implant material to have application potential in the aspects of preventing / relieving / treating implant bacterial infection, large-size bone defect oxygen supply insufficiency and poor osseointegration.

The invention belongs to the technical field of implant materials, and discloses a porous titanium-based implant material surface calcium-phosphorus coating and a preparation method thereof. According to the method, a porous titanium-based implant material is used as a cathode, an annular platinum electrode is used as an anode, the cathode is located in the center of the annular electrode, a solution containing calcium and phosphorus is used as an electrolyte, biomimetic mineralization is carried out under the condition of pulse micro-potential, and the calcium-phosphorus coating is formed on the surface of the porous titanium-based implant material. According to the method, the biomimetic mineralization process of the surface of the beam structure in the porous titanium-based material is regulated and controlled by adopting the annular electrode and the weak electric field, migration of ions and ion groups in the porous scaffold is improved by adjusting the current of the annular electrode and combining the biomimetic mineralization process, and the porous titanium-based implant material uniformly covered with the calcium-phosphorus coating is obtained. The method is simple, and uniform covering of the calcium-phosphorus coating of the porous titanium-based implant material is achieved.

The invention discloses a titanium-magnesium nail plate system capable of promoting fracture healing and a manufacturing and forming method. The manufacturing and forming method comprises the steps that a bone fracture plate digital model containing a bone trabecula simulation porous area and a partition filling cavity is established according to a bone anatomical structure, and a titanium-based workpiece of a porous structure is manufactured through selective laser melting forming; a titanium-zinc-calcium component gradient transition layer is constructed layer by layer on the surface of the porous inner wall of the titanium-based workpiece through a directional deposition process, interface bonding is strengthened through low-temperature heat treatment, and the titanium-based workpiece with a gradient interface is obtained; the titanium-based workpiece with the gradient interface is placed in an inert atmosphere, after heating is conducted, molten magnesium or magnesium alloy is injected into all the cavities through a partitioned vacuum pressure injection technology, and after cooling is conducted, a titanium-magnesium composite workpiece is formed; through a customized and interface-controllable manufacturing method, a high-strength titanium skeleton and a degradable healing-promoting magnesium material are firmly combined, and integrated design and manufacturing of mechanical support and biological activity of the internal fixation device are achieved.

The application belongs to the field of ceramic materials, and particularly relates to a preparation method of a porous titanium boride alloy / hydroxyapatite fluoride composite material. 10 (PO4)6OH 2‑2x F 2x Wherein, x is 0.1-0.6; in the mixture, the weight ratio of TC4, TiB2 and FHA is 86-94:3-7:3-7; the sintering temperature is 1000-1100 DEG C. The application also includes the composite material prepared by the preparation method and the application of the composite material in oral implant materials. The preparation method can realize synergy, improve the strength and biological activity of the material based on the combination of components, proportions and sintering processes.

The invention discloses a method for preparing a porous titanium-based material with low mass transfer resistance by using magnetic field induction, and relates to the technical field of electrode manufacturing, and the method comprises the following steps: preparing titanium powder slurry containing magnetic components and titanium powder slurry without magnetic components, and preparing a double-layer or multi-layer composite structure from different slurries; directionally arranging the magnetic components by using a magnetic field; the sintering treatment enables the magnetic components to be decomposed or sintered to generate a directionally-arranged supporting structure, and the directionally-arranged supporting structure is obtained; and continuously sintering at the temperature higher than the first temperature interval, and pickling to remove the directionally arranged support structure to obtain the porous titanium-based material with the dual-scale pore structure, the problems that in the prior art, mass transfer efficiency is low, mass transfer resistance is large, a directional through pore structure is difficult to achieve, cooperative construction of pores with different pore diameters is difficult, the functionality of the pores is single, and the pores are prone to being polluted are solved.

The invention belongs to the technical field of electrode materials, and particularly relates to an electrode foil, a preparation method thereof and an aluminum electrolytic capacitor. The preparation method of the electrode foil comprises the step of forming the porous titanium dioxide film on the surface of the aluminum foil before the aluminum foil is pretreated. The preparation method is easy to operate and control, the porous titanium dioxide film is formed on the surface of the aluminum foil before pretreatment, preparation of the electrode foil with uniform surface hole forming and consistent tunnel hole length is achieved, and the electrode foil prepared through the method is high in capacity and good in bending performance.

The invention provides a porous titanium black ceramic body, a preparation method and application thereof and an electro-catalysis device. The preparation method comprises the following steps: carrying out sintering molding on a mixture of TiOx powder and a metal oxide type ionic crystal or firstly molding and then sintering to prepare a ceramic body containing the TiOx powder and the metal oxide type ionic crystal; carrying out acid pickling on the ceramic body to obtain a porous TiOx ceramic body; in the TiOx powder, x is more than 0 and less than or equal to 1; or carrying out sintering molding on the mixture of the TiO2 powder and the metal Mg, or firstly molding and then sintering to prepare a ceramic body containing the TiOx powder and the magnesium oxide; carrying out acid pickling on the ceramic body to obtain a porous TiOx ceramic body; in the TiOx powder, xlt is greater than or equal to 1; 2. The porous titanium black ceramic body has conductivity close to metal grade, a through porous structure and full-ceramic chemical stability, the preparation method is simple, the cost is low, and industrial production is facilitated.

A sheet-shaped porous titanium body is disclosed. The thickness of the sheet-shaped porous titanium body is 40 μm or more and 500 μm or less, and the porosity is 30% or more and 50% or less. The surface roughness of a first main surface of the sheet-shaped porous titanium body is lower than the surface roughness of a second main surface opposite the first main surface. In the peripheral portion of the sheet-shaped porous titanium body, the number of first protrusions having a height of 30 μm or more protruding from the first main surface is equal to or less than the number of second protrusions having a height of 30 μm or more protruding from the second main surface in the peripheral portion.

The invention provides a method for preparing a high-performance surface modified titanium filter through titanium waste recovery, and relates to the technical field of filter preparation. The method sequentially comprises the steps of titanium raw material hydrogenation, micron-sized titanium hydride powder preparation, porous titanium filter cold forming die preparation, titanium filter compact preparation, porous titanium filter preparation and high-performance surface modification titanium filter surface modification. The filter prepared from the titanium waste has the advantages of long service life, high filtering precision, short production flow and low production cost; the problems that an existing filter used for filtering titanium tetrachloride is short in service life, prone to perforation and breakage, insufficient in filtering precision and high in cost are solved. The preparation technology of the filter has no special limitation on raw material components, can meet the requirements under different production environments and conditions, and has wide applicability.