26 results about "Sintered titanium" patented technology

This invention provides a method for measuring pulsed laser parameters based on titanium nanofilms, belonging to the field of pulsed laser parameter measurement methods. The method first prepares titanium nanoparticle ink; then, a titanium deposition layer is prepared by inkjet printing or spin coating; finally, the titanium deposition layer is placed within the laser scanning range, a single-point or line scanning mode is set, and images of the sintered titanium region are recorded. The corresponding laser parameters are obtained through image processing software analysis. This method can intuitively, conveniently, and cost-effectively obtain key pulsed laser parameters, and can accurately obtain parameters such as spot size and repetition frequency.

The invention provides titanium-doped iron phosphate and a preparation method and application thereof, and belongs to the technical field of battery materials.The preparation method of the titanium-doped iron phosphate comprises the steps that an iron source solution and titanium source slurry subjected to crystal transformation treatment are mixed to obtain first slurry; a phosphorus source solution and a pH regulator are sequentially added into the first slurry, and second slurry with the pH larger than 2 is obtained; filtering the second slurry to obtain a first filter cake, rinsing the first filter cake, and dispersing the first filter cake with a phosphoric acid solution to obtain a third slurry; after the third slurry is aged, the obtained aged slurry is filtered, washed, dried and sintered in sequence, and titanium-doped iron phosphate is obtained. The titanium source slurry subjected to crystal transformation treatment is introduced into an iron phosphate synthesis system, hydrated titanium dioxide in the sintered titanium source slurry is converted into anatase titanium dioxide, the anatase titanium dioxide and iron phosphate form an interstitial solid solution, and the prepared titanium-doped iron phosphate has a relatively high iron-phosphorus ratio, so that the capacity performance of a secondary battery is improved.

The invention relates to the technical field of cooking heaters, and discloses a preparation method of a cooking heater based on a titanium alloy ceramic film, which comprises the following preparation steps: 1) sintering titanium alloy ceramic on a bottom plate to form a bottom insulating layer; 2) arranging a heating body; 3) sintering titanium alloy ceramic on the bottom insulating layer to form a top insulating layer; (4) a top plate is arranged on the top insulating layer, and the top plate, the top insulating layer, the heating body, the bottom insulating layer and the bottom plate are combined to form a heating plate of an integrated structure; (5) a tray body is provided, an inner cavity is formed in the tray body, and the inner cavity is sunken downwards to form a sunken cavity; the heating plate covers the bottom of the inner cavity, and the heating plate and the tray body are connected to form an integrated structure; the titanium alloy ceramic has the advantage of better energy storage, so that heat transfer of the heating body is facilitated; and secondly, the heating plate and the tray body are connected to form an integrated structure, so that heat of the heating plate is conveniently transferred into the inner cavity of the tray body, high-efficiency heat transfer is realized, and the energy consumption is low.

This application discloses a bipolar plate, electrolysis chamber, and electrolyzer, relating to the field of water electrolysis hydrogen production technology. The bipolar plate comprises a plate body; a portion of the plate body arches away from one side thereof to form a raised structure; the raised structures are multiple and evenly spaced; and a buffer zone with a zigzag profile is formed between the raised structures near the water outlet or water inlet of the plate body. This design eliminates the need for multiple layers of sintered titanium mesh, effectively reducing process assembly difficulty and cost. It also reduces water / air inlet resistance and water / air outlet resistance, while ensuring effective contact area on the plate body, lowering layer resistance and operating voltage, and improving hydrogen production efficiency.

The present invention discloses a method for sintering titanium alloy by ultraviolet light assisted activation and its product and application, belonging to the technical field of titanium alloy activation sintering preparation, wherein the method comprises: mixing hydrogenated dehydrogenated titanium powder and intermediate alloy powder required for preparing target titanium alloy according to the target titanium alloy component ratio to obtain original powder; using ultraviolet light to irradiate the original powder from different angles, performing activation treatment, obtaining activated powder, pressing the activated powder into blanks, sintering the blanks, and obtaining titanium alloy. The titanium alloy powder used in the present invention can effectively improve the diffusion speed and uniformity of alloy elements after ultraviolet light assisted activation, ultraviolet light irradiates the original powder from different angles for activation treatment, reduces the sintering temperature of titanium alloy to a certain extent, improves the sintering density, and improves the mechanical properties of the material. Since the preparation method is simple and easy to operate, it is often used in modern industrial production processes, which is convenient for preparing large-scale titanium alloy structural parts.

The application provides a powder sintered titanium diffusion layer and a preparation method and application thereof, and belongs to the technical field of regenerative fuel cells, and comprises the following steps: preparing a coating A and a coating B, coating the coating A on a substrate to obtain a green film, coating the coating B on the surface of the green film to obtain a composite green film, and performing pretreatment, degreasing and sintering on the composite green film to obtain a powder sintered titanium diffusion layer with a hydrophobic Ti6O surface. The application provides a powder sintered titanium diffusion layer and a preparation method and application thereof, and realizes simple preparation of a titanium-based diffusion layer with adjustable surface hydrophilicity and hydrophobicity.

The invention discloses a preparation method of a hard alloy numerical control blade sintering boat coating, which comprises the following steps: S1, preparing raw materials: weighing required amounts of purified water, methyl cellulose and titanium nitride powder according to a weight ratio of (90-110): (0.5-1.5): (10-20); s2, adding purified water and methyl cellulose into a stainless steel barrel, setting the rotating speed of a digital display speed measurement electric stirrer to be 400-800 revolutions per minute, and stirring for 3-5 hours at room temperature; s3, titanium nitride powder is added, stirring continues to be conducted for 10-15 minutes at the room temperature, and coating preparation is completed. The method has the following advantages that the components are simple, raw materials are convenient to prepare, the preparation process is simple, the labor intensity is low, the sintered titanium nitride powder can be recycled and reused, the cost is saved, production is flexible, and small-scale, medium-scale and large-scale production can be achieved.

The application provides a sintered titanium plate (1) for hydrogen production by electrolysis of water, comprising a support (2) for providing support for the sintered titanium plate, and a titanium layer (3), wherein a plurality of mesh holes (21) are arranged on the support (2) in a regular or irregular distribution; the titanium layer (3) is composed of titanium powder, and covers at least one side of the support (2) and is integrally formed with the support (2) to form a plate-shaped body; the thickness of the sintered titanium plate (1) is 0.01-0.05 mm through the combination of the support (2) and the titanium layer (3), and the sintered titanium plate (1) has good mechanical strength, water permeability and electrical conductivity.

The application relates to an equipment and process for sintering a titanium alloy based on a graphite vacuum sintering furnace, which comprises a furnace body, a graphite box arranged in the furnace body, a vacuum pumping device communicated with the graphite box, a heating device comprising a water-cooled medium-frequency induction coil assembly, a heat-conducting insulation assembly and an auxiliary temperature control assembly, the heat-conducting insulation assembly being connected with the water-cooled medium-frequency induction coil assembly and the auxiliary temperature control assembly and being arranged in heat conduction and insulation between the water-cooled medium-frequency induction coil assembly and the auxiliary temperature control assembly, the water-cooled medium-frequency induction coil assembly being arranged outside the graphite box and used for heating the graphite box, and the auxiliary temperature control assembly being used for heat exchange with the water-cooled medium-frequency induction coil assembly when the water-cooled medium-frequency induction coil assembly heats the graphite box, so as to assist in adjusting the temperature rise of the graphite box when the water-cooled medium-frequency induction coil assembly heats the graphite box. The application can make the adjustment process quickly respond in place and shorten the response time, and can also guarantee the adjustment accuracy in place and the precision of the adjustment process.

This invention discloses an infrared detection device and method for membrane electrode leakage. The device includes a leak detection base plate, a leak detection upper plate, an infrared camera assembly, and a four-column press. The upper surface of the leak detection base plate has a groove, within which a lower sintered titanium felt is embedded. The upper surface of the first sintered titanium felt is flush with the upper surface of the leak detection base plate, forming a flat support surface. A positioning assembly on the leak detection base plate passes through a positioning hole on the membrane electrode under test. A second sintered titanium felt and a titanium mesh are sequentially arranged above the membrane electrode under test. The leak detection upper plate is pressed onto the titanium mesh. An infrared camera captures the temperature distribution image of the upper surface of the membrane electrode under test, and the presence of a high-temperature region determines whether leakage has occurred. This invention achieves non-destructive testing consistent with the actual operating conditions of the membrane electrode, and has the advantages of high detection accuracy, high speed, no damage to the membrane electrode, simple structure, and low energy consumption.

The invention provides a high-strength and high-toughness titanium alloy as well as a heat treatment method and a preparation method thereof, and the high-strength and high-toughness titanium alloy comprises the following elements in percentage by weight: 5.0-5.6% of Al; 4.5 to 5.2 percent of Mo; v: 4.8 to 5.5%; 2.8%-3.5% of Cr and Fe; and the balance of Ti. The preparation method comprises the steps that weighed titanium alloy raw materials are subjected to powder mixing, pre-diffusion, cold pressing blank making, vacuum sintering and multi-stage heat treatment, and the multi-stage heat treatment process comprises the steps that a sintered titanium alloy blank is put into a furnace at the temperature of 20-60 DEG C below the phase transformation point, heat preservation is conducted for 1-2 h, and then water cooling is conducted to the room temperature; then putting into a furnace at the temperature of 780-880 DEG C, preserving heat for 2-3 hours, and then water-cooling to room temperature; then, feeding into a furnace at the temperature of 710-770 DEG C, preserving heat for 1-2 hours, and then air-cooling to room temperature; and finally, feeding into a furnace at the temperature of 650-710 DEG C, preserving heat for 2-4 hours, and then air-cooling to room temperature to obtain the high-strength and high-toughness titanium alloy. The high-strength and high-toughness titanium alloy comprises a primary alpha phase, a grain boundary discontinuous alpha phase, a secondary alpha phase and a residual beta phase, and the strength and toughness are remarkably improved while the lightweight requirement is met.

The present invention provides an electrolytic cell structure for electrolyzing water, comprising: a membrane electrode, an electrode structure, and an end plate. The electrode structure comprises an anode and a cathode structure distributed on opposite sides of the membrane electrode. The anode and cathode structures are sequentially provided with titanium plates and electrode plates in a direction away from the membrane electrode. The titanium plates are circumferentially sleeved with a sealing frame. A flow channel is provided on the side facing away from the membrane electrode. A through hole is provided on the electrode plate, and a flow channel is formed between the flow channel and the through hole. The end plates are respectively arranged on the side of the anode and cathode structures facing away from the membrane electrode. A first water inlet and an oxygen outlet are provided on the end plate adjacent to the anode structure, and at least a hydrogen outlet is provided on the end plate adjacent to the cathode structure. The present invention uses a porous powder sintered titanium plate. When water flows in the flow channel of the titanium plate, it will naturally penetrate to the surface of the membrane electrode for water replenishment, thereby improving the water replenishment conditions of the membrane electrode and improving the performance of the electrolytic cell. At the same time, it simplifies the manufacturing difficulty of the flow channel and reduces processing costs.

A method (100) of obtaining a full-density sintered titanium component can include providing (110) a titanium component having a starting density of 92% or less. The titanium component can be heated to and held at a sintering temperature (120) under a sintering atmosphere containing hydrogen with a pressure during sintering less than 0.2 MPa. This can sinter (130) the titanium component to greater than 92% theoretical density forming a sintered component. The sintered component can be held (140) at a densification temperature while applying a gaseous pressure of 0.2 MPa to 100 MPa with a densification atmosphere, to hot isostatically press (HIP) the sintered component to full density having greater than 99.5% relative density to form the full-density sintered titanium component.

The invention discloses an iridium-based perovskite coating titanium anode and a preparation method and application thereof, and belongs to the technical field of oxygen evolution type precious metal coating titanium anodes. The preparation method comprises the following steps: dissolving potassium hexachloroiridate in ethylene glycol, then dropwise adding a prepared mixed solution obtained by dissolving strontium nitrate and citric acid in deionized water, and fully stirring to prepare an MIrO3 coating solution; the ratio of the alkaline earth metal nitrate to the potassium hexachloroiridate is (2: 1)-(5: 1); preparing a coating: uniformly coating the pretreated titanium base material with an MirO3 coating solution, and sintering; the sintered titanium anode is subjected to acid pickling; and coating, sintering and acid pickling are repeated until the iridium content in the titanium anode MirO3 coating reaches 5-10 g.m <-2 >. The nano material prepared by the method is in a three-dimensional porous nano-particle shape, the content of iridium in the coating is remarkably reduced, the electrochemical activity of a titanium anode surface coating catalyst is improved, and the service life of the titanium anode surface coating catalyst is prolonged. The preparation process is simple, feasible, safe, green and low in cost.

The invention relates to equipment and technology for sintering titanium alloy based on a graphite vacuum sintering furnace, and the equipment comprises a furnace body which is internally provided with a graphite box; the vacuumizing device is communicated with the graphite box; the heating device comprises a water-cooling medium-frequency induction coil assembly, a heat conduction and insulation assembly and an auxiliary temperature control assembly, and the heat conduction and insulation assembly is connected with the water-cooling medium-frequency induction coil assembly and the auxiliary temperature control assembly and is arranged between the water-cooling medium-frequency induction coil assembly and the auxiliary temperature control assembly in a heat conduction and insulation mode; the water-cooling medium-frequency induction coil assembly is arranged outside the graphite box and used for heating the graphite box, and the auxiliary temperature control assembly is used for exchanging heat with the water-cooling medium-frequency induction coil assembly when the graphite box is heated by the water-cooling medium-frequency induction coil assembly so as to assist in adjusting the temperature rise when the graphite box is heated by the water-cooling medium-frequency induction coil assembly. The adjusting process can be quickly responded in place, and the response time is shortened; meanwhile, accurate and in-place adjustment can be guaranteed, and the precision of the adjustment process is guaranteed.

The invention relates to the technical field of sintered titanium-iron-boron magnets, and discloses a preparation method of sintered neodymium-iron-boron with high bending strength, and main alloy elements comprise 27.2-29.3% by mass of R (R is a rare earth element which must contain any one of Nd and Pr), 0.93-1.0% by mass of B, 0.03-0.1% by mass of Ti, # imgabs 0 # by mass% Cu, 0.03-0.1% by mass of Al, # imgabs 1 # by mass% Ga and # imgabs 2 # by mass% Co. According to the preparation method of the high-bending-strength sintered neodymium iron boron, when main alloy elements meet the formula (1), the R2Fe14B main phase main body in a main alloy casting piece reaches 98.5% or above, and high residual magnetism can be kept; when the auxiliary alloy elements meet the formula (2) and the formula (3), the formed low-melting-point magnet intergranular phase is good in wettability and beneficial for improving the intrinsic coercive force of the magnet, most importantly, Al-Cu elements are mainly distributed in the grain boundary, the interface mismatching degree of the main phase and the thin-layer Nd-rich phase is obviously reduced, and then the bending strength of the magnet is obviously improved.

This invention relates to a battery stack (2) comprising a plurality of individual cells (9, 10, 11, 12), each individual cell (9, 10, 11, 12) comprising: a membrane electrode system (3) having a cathode (6), an anode (4), and a membrane (5) located between the cathode and the anode; an anode gas diffusion layer (7) or a sintered titanium component, the anode gas diffusion layer being disposed on the exposed side of the anode (4) and having a first thickness gradient along the machine transverse (y); and a cathode gas diffusion layer (8) disposed on the exposed side of the cathode (6), the cathode gas diffusion layer having a second thickness gradient along the machine transverse (y), wherein: in a In a single cell (9, 10, 11, 12), the anode gas diffusion layer (7) and the cathode gas diffusion layer (8) are arranged relative to each other such that a first thickness gradient of the anode gas diffusion layer (7) and a second thickness gradient of the cathode gas diffusion layer (8) are opposite; or in two or more single cells (9, 10, 11, 12), each anode gas diffusion layer (7) is arranged relative to each other such that the total thickness gradient of these anode gas diffusion layers (7) is minimized and / or in two or more single cells (9, 10, 11, 12), each cathode gas diffusion layer (8) is arranged such that the total thickness gradient of these cathode gas diffusion layers (8) is minimized.

A long-acting electrolytic bath comprises a left end plate, a right end plate and a temperature sensor for detecting the temperature of the electrolytic bath, a left isolation pad, a left positive plate, a porous sintered titanium plate, a catalyst-free coating film, a porous sintered titanium plate, a negative plate, a porous sintered titanium plate, a catalyst coating film, a porous sintered titanium plate, a right positive plate and a right isolation pad are sequentially stacked between the left end plate and the right end plate from left to right; the positive plate and the negative plate on the left side supply power to the electrolysis unit where the catalyst-free coating film is located; the right positive plate and the right negative plate supply power to the electrolysis unit where the catalyst coating film is located; positive electrode cavities are formed between the left positive plate and the catalyst-free coating films and between the right positive plate and the catalyst coating films, and negative electrode cavities are formed between the catalyst-free coating films and the catalyst coating films; a water inlet and an oxygen outlet in the end plate are connected with the positive electrode cavity, and a hydrogen outlet in the end plate is connected with the negative electrode cavity. According to the utility model, a double-membrane overlapping mode is adopted, so that the service life of the electrolytic bath is prolonged.

This utility model relates to the field of catering products technology and discloses a titanium enamel antibacterial cookware, including a tableware body. The tableware body has a titanium alloy base layer inside, and a sintered titanium enamel layer is provided on the inner surface of the titanium alloy base layer. Antibacterial particles are uniformly dispersed on the inner side of the sintered titanium enamel layer, and an outer ceramic layer is provided on the outer side of the titanium alloy base layer. The titanium alloy base layer provides a high-strength support skeleton, and the sintered titanium enamel layer on its surface forms a dense protective barrier. The antibacterial particles (nano-titanium dioxide and silver particles) embedded in this layer constitute the core antibacterial mechanism. When the tableware is exposed to natural light or artificial light, the antibacterial particles trigger a photocatalytic reaction, continuously releasing reactive oxygen free radicals and silver ions, directly destroying bacterial cell membranes and blocking DNA replication, achieving an ultra-high broad-spectrum antibacterial rate. This design breaks through the limitation of traditional coatings being easily worn off. The Mohs hardness of the sintered titanium enamel layer ensures that the antibacterial particles are firmly encapsulated. Even with long-term wear and tear, the inner particles can still slowly release antibacterial factors.

The utility model provides a composite sintered titanium plate and a water electrolysis hydrogen production electrolytic bath using the composite sintered titanium plate, and the composite sintered titanium plate comprises at least one layer of supporting net (10) which is of a preset net structure; the at least one layer of sintered titanium plate (11) is bonded with the at least one layer of supporting net (10) through a preset plate body structure; wherein the at least one layer of sintered titanium plate (11) and the at least one layer of supporting net (10) are integrally formed into a composite plate (1) with a preset thickness; according to the composite sintered titanium plate, the bonding face of the sintered titanium plate (11) and the supporting net (10) can be set to be in a specific shape, the sintered titanium plate (11) is pressed to be thin on the basis that higher sintering bonding strength is formed, and the water permeability or the water passing performance is improved.

The graphite furnace comprises a shell, a carbon felt layer and a graphite furnace body which are sequentially arranged from outside to inside, a middle area is formed between the graphite furnace body and the carbon felt layer, and a graphite cavity is formed in the graphite furnace body. The method comprises the following steps that a degreased part obtained after a TC4 titanium alloy green body is degreased is put into a graphite cavity to be sintered, so that a TC4 titanium alloy sintered part is obtained, and the sintering process sequentially comprises a thermal degreasing stage, a vacuum sintering stage, a first cooling stage and a second cooling stage; in the thermal degreasing stage, high-purity argon is introduced into the graphite cavity so that the graphite cavity can keep the argon atmosphere; in the vacuum sintering stage and the first cooling stage, high-purity argon is introduced into the graphite cavity and the middle area so that the graphite cavity and the middle area can keep the argon atmosphere. The problem that carbon pollution and oxygen pollution exist when TC4 titanium alloy is sintered in an existing graphite furnace is solved.

The present invention discloses a fine-grained and highly dense titanium aluminide alloy and a preparation method thereof. The raw materials of the fine-grained and highly dense titanium aluminide alloy include Ti, Al, and YbB6, wherein the mass fraction of YbB6 is 0.2 - 0.5%. YbB6 powder is added to the titanium aluminide alloy. During the sintering process, YbB6 reacts with Ti and Al, absorbs the oxygen entering the matrix, and generates rare earth oxide Yb2O3, achieving the purpose of purifying the matrix and having the effect of oxide dispersion strengthening at the same time. At the same time, a second phase TiB with a dispersed distribution is generated. While the grain refinement effect is further optimized, the strength of the sintered titanium aluminide alloy is greatly improved, thereby obtaining a titanium aluminide alloy with fine grains, high density, high strength, and good toughness.

The invention provides a heat treatment method of an injection-molded titanium alloy and a high-strength and high-toughness titanium alloy, and the heat treatment method comprises the following steps: S1, presetting a titanium alloy powder raw material, and carrying out powder injection molding on the titanium alloy powder raw material to obtain a sintered titanium alloy; s2, the sintered titanium alloy is heated to the solid solution temperature in a sintering furnace under vacuum, heat preservation is conducted, then the sintered titanium alloy is cooled to the room temperature, and the titanium alloy subjected to solid solution is obtained; and S3, the titanium alloy subjected to solid solution treatment is heated to the aging temperature in vacuum, heat preservation is conducted, then the titanium alloy is cooled to the room temperature, and the high-strength and high-toughness titanium alloy is obtained. The titanium alloy powder can be prepared through a powder injection molding technology, the high-strength and high-toughness titanium alloy with the density larger than 99.0% and excellent mechanical performance is obtained after heat treatment, the room-temperature tensile strength of the titanium alloy is larger than 1300MPa, the yield strength of the titanium alloy is larger than 1200MPa, and the ductility of the titanium alloy is larger than 6.0%.

Disclosed are titanium alloys for use in additive manufacturing that comprise a titanium material and a beta eutectoid stabilizer. The beta eutectoid stabilizer can be present in an effective amount to produce an equiaxed grain structure when the titanium alloy is melted or sintered during an additive manufacturing process. Also provided are methods of forming objects via additive manufacturing processes as well as methods of forming titanium alloys for use in additive manufacturing.

The invention discloses a method for preparing a high-gloss titanium alloy, and belongs to the field of powder metallurgy. The preparation method comprises the following steps: firstly, taking Ti-6Al-4V and Ti-6Al-4V-0.5 Fe powder as raw materials, and carrying out pressing or injection molding to obtain a green body; then, the green body sample is subjected to degreasing and pressureless vacuum sintering to obtain a titanium alloy sintered sample, and the sintered sample is subjected to surface nitriding modification and precise polishing treatment; finally, the surface glossiness of the titanium alloy nitrided for 1 hour reaches 607 + / -5 Gu, the microhardness reaches 705 + / -88 HV1.0, and the roughness is lower than 0.041 [mu] m. By adding a trace amount of Fe element (0.5 wt.%) and liquid phase sintering to refine grains and reduce pores, nitriding treatment is performed after sintering to form an extremely thin and compact titanium nitride layer, and then multi-stage precision polishing is matched, so that the surface hardness is improved, the roughness is remarkably reduced, the glossiness is improved, and the method has the characteristics of simple process, economy, high efficiency, suitability for large scale and the like.

Disclosed is a method for producing titanium or a titanium alloy, with which titanium or a titanium alloy having an oxygen concentration of 0.15 mass% (1,500 mass ppm) or less is produced by melting, casting, or sintering titanium (Ti) or a titanium alloy using a container that contains a rare earth metal oxyhalide salt as a main component. With the method for producing titanium or a titanium alloy, titanium or a titanium alloy having a low oxygen concentration is produced by melting, casting, or sintering titanium or a titanium alloy using a container of a rare earth metal oxyhalide, to which a rare earth metal and a rare earth metal halide salt are added as auxiliary agents, so as to directly remove impurity oxygen in the titanium or the titanium alloy by utilizing a generation reaction of a rare earth metal oxyhalide salt.