109 results about "Titanium foil" patented technology

The invention provides a composite material with excellent heat insulation performance, which relates to the field of fireproof heat insulation structures, and sequentially comprises a fireproof layer, a transition layer, a first protection layer, a first heat insulation layer, a second heat insulation layer and a second protection layer, wherein the fireproof layer adopts an intumescent fireproof coating, the transition layer adopts a primer, the first protection layer and the second protection layer adopt metal titanium foils, the first heat insulation layer adopts an aerogel felt, the second heat insulation layer adopts a phase change material, the phase change material is formed by compounding a phase change raw material and a base material, and the phase change raw material is microcapsules. A packaging material of the microcapsule is a mixture of melamine, formaldehyde and urea, and a phase change inner core of the microcapsule is paraffin; the base material is epoxy resin. The composite material not only has the characteristics of excellent fireproof and heat-insulating performance, thin thickness, light weight, good long-term stability and the like, but also has the advantages of simple structure, convenience in installation, wide application range and the like.

The invention relates to a bimetallic porphyrin / GO / TiO2 nanotube composite photocatalytic material and application thereof. The bimetallic porphyrin / GO / TiO2 nanotube composite photocatalytic material is prepared by the following preparation method: preparing Ni-CoTCPP; the preparation method comprises the following steps: preparing a bimetallic porphyrin solution, immersing TiO2NTs into the porphyrin solution, stirring, taking out a titanium foil, and drying at room temperature to prepare Ni-CoTCPP / TiO2NTs; and soaking the Ni-CoTCPP / TiO2NTs into the suspension of GO, stirring, taking out the titanium foil, and drying at room temperature to obtain the Ni-CoTCPP / GO / TiO2NTs. The bimetallic porphyrin / GO / TiO2NTs ternary composite material is constructed through the action of porphyrin in photosynthesis, various targets in the field of photocatalytic CO2 reduction are achieved, and selectivity of products can be controlled while photocatalytic activity is improved.

The invention discloses a carbon-doped titanium dioxide nanotube-molybdenum disulfide energy-storage antibacterial material and a preparation method thereof. The preparation method comprises the following steps: carrying out primary anodic oxidation on a clean titanium foil in a mixed electrolyte of ethylene glycol, water and ammonium fluoride; after ultrasonic treatment is carried out in a hydrochloric acid solution for set time, secondary anodic oxidation is carried out, and the mixed electrolyte of the secondary anodic oxidation is the same as that of the primary anodic oxidation; annealing the titanium foil subjected to anodic oxidation twice in an argon atmosphere, putting an annealed sample into a mixed solution of sodium molybdate, a sulfur source and glucose, and carrying out hydrothermal treatment; and the titanium foil subjected to hydro-thermal treatment is cleaned and dried, and the carbon-doped titanium dioxide titanium foil with the surface covered with molybdenum disulfide is obtained. The MoS2-coated carbon-doped titanium dioxide nanotube (TNT-C-atMoS2) with high biocompatibility developed by the invention has a synergistic effect of charge antibiosis and chemical sterilization, so that the problem of intractable biological fouling of a titanium-based metal material in ocean engineering equipment is effectively solved.

The invention discloses a medium-strength high-plasticity Ti-Ta alloy resistant to boiling concentrated nitric acid corrosion. The medium-strength high-plasticity Ti-Ta alloy is composed of, by mass, 5.5%-6.5% of Ta, 0.16%-0.6% of O and the balance Ti and inevitable impurities. In addition, the invention further discloses a preparation method of the Ti-Ta alloy, sponge titanium, Ti-Ta intermediate alloy scraps and titanium dioxide powder wrapping titanium foil are mixed and then smelted, and a mixture is obtained; and then rolling and annealing to obtain the Ti-Ta alloy. The alpha-type titanium alloy with a uniform structure and a single phase is obtained through oxygen microalloying, so that the alloy has excellent mechanical properties and nitric acid corrosion resistance and also has excellent welding performance and machinability, the alloy is simple in component, the preparation method is short in period and high in efficiency, the strong plasticity and the nitric acid corrosion resistance are synergistically improved, and the preparation method is suitable for industrial production. Basic data support and candidate materials are provided for reinforcement and corrosion prevention of metal structure materials for spent fuel aftertreatment equipment and design of new materials.

The invention discloses a preparation method of a V-MOF nano material, which comprises the following steps: dissolving vanadium salt in absolute ethyl alcohol to form a solution A, and dissolving organic ligands 2-bromoterephthalic acid and diluted hydrochloric acid in absolute ethyl alcohol to form an organic ligand solution B; mixing the solution A and the organic ligand solution B, and performing stirring reaction to obtain a mixed solution C; reacting the mixed solution C under an ultrasonic condition to obtain a mixed solution D; the mixed solution D is subjected to a constant-temperature hydrothermal reaction, and after the hydrothermal reaction is finished, a product is cleaned to obtain the V-MOF nano material. According to the application of the V-MOF nano material in the aqueous zinc battery, the V-MOF nano material is prepared into electrode slurry, the surface of a titanium foil is coated with the electrode slurry, and the electrode slurry is dried to serve as an electrode plate of the aqueous zinc battery. The prepared vanadium-based nano material has high conductivity and cycling stability, the electrochemical performance of the aqueous zinc battery can be improved, the preparation process is simple and easy to operate, and the sea urchin-shaped V-MOF nano material can be obtained.

The invention discloses a TA4-xB alloy and a preparation method thereof, the content of B in the alloy is 0.01-0.5 wt%, and the balance is Ti and other impurities. The preparation method comprises the following steps: dividing sponge titanium and TiB2 wrapped by pure titanium foil into three equal parts, smelting in three times by adopting a vacuum non-consumable arc smelting furnace to obtain three button ingots, then putting the three button ingots into the smelting furnace for secondary smelting to obtain an alloy ingot, and finally overturning and repeatedly smelting the alloy ingot obtained by cooling after secondary smelting for three times. A TA4-xB alloy cast ingot with uniform components is obtained through smelting, the cast ingot is machined through a cast ingot machine and subjected to forging-free direct rolling to form a plate, the rolling temperature is 940 DEG C, the finish rolling temperature is 880 DEG C, five passes of rolling are conducted, the rolling deformation of the first pass is 50% or above, and the accumulative deformation is 90%. According to the method, a proper amount of B element is added, a TiB phase is generated in the TA4 titanium material, grains are refined, and then the mechanical property of the TA4 titanium material is improved through multi-pass large-deformation rolling. The method is low in process cost, short in flow, good in material comprehensive performance and free of large-scale equipment transformation.

The present invention provides a method for preparing an AgCuTi active solder, relating to the technical field of brazing materials. The preparation method comprises the following steps: pretreating a titanium foil, sequentially electroplating the surface with silver and copper, and diffusing the electroplated titanium foil in a vacuum environment at 600-700°C for 24 hours to obtain the AgCuTi solder. The method provided by the present invention can easily and conveniently prepare sheet- and strip-shaped AgCuTi active solders, and the active solders are less susceptible to the presence of CuTi intermetallic compounds while exhibiting good performance.

This invention provides a method for preparing (002) crystal-plane oriented metallic zinc and its application. The invention employs a two-electrode electrochemical deposition technique, using iron foil, titanium foil, or copper foil as the working electrode, commercial zinc foil as the counter electrode, and an aqueous zinc salt solution as the electrolyte. Constant current density discharge deposition is used to deposit (002) crystal-plane oriented metallic zinc on the working electrode; the constant current density is 50 mA cm⁻¹. ‑2 ~200 mA cm ‑2 The (002) crystal-plane oriented metallic zinc prepared by this invention can be used in rechargeable zinc-ion batteries. The two-electrode electrolytic cell device used in the preparation of metallic zinc in this invention is simple, the preparation process is straightforward, and the preparation method is more universal. The (002) crystal-plane oriented metallic zinc prepared according to the method of this invention can suppress zinc dendrite growth and hydrogen evolution, thereby improving the service life of rechargeable zinc-ion batteries.

The embodiment of the invention provides a preparation method of a titanium foil strip with high elongation and good surface microcosmic quality. The preparation method comprises the steps that a sponge titanium raw material is smelted and machined through a primary electron beam cold hearth smelting furnace; the titanium metal plate blank is coated with an anti-oxidation coating to form an anti-oxidation coating; the titanium metal plate blank coated with the anti-oxidation coating is subjected to heating, heat preservation, hot rolling and continuous annealing shot blasting acid pickling treatment; the hot-rolled titanium coil is subjected to first-rolling-process cold rolling, and continuous annealing, shot blasting and acid pickling are conducted after cold rolling; carrying out multi-rolling-process cold rolling and semi-finished product annealing by adopting a cold rolling unit and an argon protection cover type furnace; carrying out finished product rolling on the annealed master tape by adopting a cold rolling unit; performing finished product heat treatment on the titanium strip by adopting an argon shield continuous annealing furnace; and straightening the annealed titanium strip by adopting a tension straightening machine. According to the embodiment of the invention, the titanium foil strip with high elongation and good surface microcosmic quality is obtained, and the prepared titanium foil strip is excellent in forming performance and surface microcosmic quality.

The invention discloses a manganese metal organic framework material preparation method, which comprises: dissolving an organic ligand trimesic acid in a solvent to form a solution A, and dissolving manganese acetate tetrahydrate and a surfactant in the solvent to form a solution B, the solvent being an aqueous solution of ethanol; slowly dropwise adding the solution B into the solution A, uniformly stirring, and standing for reaction, wherein the molar ratio of trimesic acid to manganese acetate tetrahydrate is 1: (1.5-3.2); and after the reaction is finished, cleaning a product and drying to obtain the manganese metal organic framework material. According to the application of the manganese metal organic framework material in the aqueous battery, the manganese metal organic framework material is prepared into electrode slurry, the surface of a titanium foil is coated with the electrode slurry, and the electrode slurry is dried to serve as an electrode plate of the aqueous battery. The manganese metal organic framework material with the uniform flower-ball shape is prepared, embedding and disengaging of Zn < 2 + > in the charging and discharging process are effectively promoted, and the electrochemical performance of the water-based zinc battery is improved.

The present invention relates to the technical field of high thermal conductivity copper-based electronic packaging materials, and discloses a method for preparing a Cu / graphene film layered composite material, characterized in that the steps are as follows: Step 1: Process copper foil, titanium foil, and graphene film into a disc with a diameter of 30 mm, and then use a puncher to punch holes in the disc; The above-punched disc is ultrasonically pickled in a hydrochloric acid solution, and then washed with anhydrous ethanol and dried in a drying oven; Step 2: The disc obtained in step 1 is molded in the order of Cu-Ti-GN-Ti; Step 3: After the mold in step 2 is pre-pressed by 10MPa in advance, it is placed in a sintering furnace cavity for sintering. In the present invention, the layered material uses Cu as a skeleton to ensure that the material has a certain strength, and Cu and graphene together serve as a heat dissipation body, so that the thermal conductivity of the layered material is much higher than that of pure copper. At the same time, because the density of graphene is low, it is only one-tenth of pure copper, which reduces the density of the layered material and is suitable for lightweight production.

The application relates to a preparation method of a tin dioxide negative material, and belongs to the technical field of lithium battery negative material synthesis. The application aims at solving the problems of the existing SnO2 negative material, such as large volume effect in the charging and discharging process, easy falling off on the current collector, complex preparation process of the SnO2 negative material and high cost. The preparation method comprises the following steps: S1, preparing a micro-arc oxidation electrolyte; S2, placing a titanium foil and the micro-arc oxidation electrolyte in a micro-arc oxidation electrolytic tank, taking the titanium foil as a positive electrode and a stainless steel plate as a negative electrode; and S3, micro-arc oxidation. The application is used for the preparation of the tin dioxide negative material.

The invention discloses an activating and collecting device for laser inertial confinement fusion, which comprises a fixing ring, a foil supporting plate, a collecting foil, an activating medium, a background foil, a collector supporting plate and a collector shell, and is characterized in that a vanadium foil is arranged in the collecting foil, graphite paper is arranged in the collecting foil, and the activating medium is arranged in the collecting foil. An aluminum foil and a titanium foil are arranged in the collecting foil, the collecting foil comprises a vanadium foil, graphite paper, the aluminum foil and the titanium foil, the thickness of the collecting foil is micron dimension, the diameter of the collecting foil is smaller than 150mm, the surface of the collecting foil needs to be polished until the surface roughness is smaller than or equal to 1mu m rms, and by activating a medium and reducing the consumption of DIM, the medium can be activated while neutrons are activated, and the surface roughness of the collecting foil is smaller than or equal to 1mu m rms. The reliability of different collected materials and the collection efficiency of different products of the four materials in an ICF extreme environment can be measured in one time through the vanadium foil, the graphite paper, the aluminum foil and the titanium foil of the collection foil, and the experiment efficiency is improved.

This invention discloses a vacuum hot pressing process for titanium foil, comprising the following steps: S1, roll cutting; S2, sheet cleaning; S3, loading fixture; S4, vacuum hot pressing; ensuring the sheet surface is clean and dust-free during the cleaning process; the loading fixture ensures the sheet is flat and the fixture is locked; the vacuum heat treatment process ensures the vacuum degree of the heat treatment furnace, and the heat preservation temperature is adjusted according to the flatness standard; high-purity argon gas is introduced during the cooling process to ensure that no micro-oxide layer is generated on the sheet surface, thereby improving the surface quality of the titanium foil.

The invention provides a preparation method of a protection and heat insulation composite structure, and relates to the field of functional composites.The protection and heat insulation composite structure comprises a first protection layer, a composite heat insulation layer and a second protection layer, the first protection layer and the second protection layer are each of a metal embossed titanium foil structure, and the composite heat insulation layer is formed by alternately stacking heat resistance layers and reflecting layers; the preparation method comprises the steps that the protective layers are obtained through the embossing process, the reflecting layer is obtained through the magnetron sputtering and imidization process, the thermal resistance layer and the reflecting layer form the composite thermal insulation layer through the sewing process, and integration of the first protective layer, the second protective layer and the composite thermal insulation layer is achieved through the welding process. The protection and heat insulation composite structure prepared by the method can effectively avoid the problems of connection gaps, poor long-term connection stability, large thickness, large weight and the like, and has the advantages of good heat insulation performance, light weight, high efficiency, good long-term protection stability and the like.

The invention belongs to the technical field of mass spectrometry analysis and research, and discloses a laser-based metal film vibration mass spectrometry sampling method which comprises the following specific steps: step 1, dissolving a to-be-detected sample to prepare a saturated solution of melamine, taking ethanol as a solvent, and oscillating the prepared solution by using an ultrasonic oscillator to ensure that the solution is in a uniform dispersion state; a sample is uniformly sprayed on titanium foil, a laser thermal mechanical effect is accurately regulated and controlled, non-contact desorption is realized by utilizing mechanical vibration wave conduction with optimized thickness of the titanium foil, the problem of molecular cracking caused by direct irradiation of traditional laser is effectively avoided, a uniform sample layer is formed through ultrasonic dispersion pretreatment and warm lamp temperature control drying, and the thermal mechanical effect of the titanium foil is accurately regulated and controlled. Dynamic sampling of a three-position translation table and laser parameter adaptation are combined, meanwhile, a cooperative adjustment mechanism of thermal expansion response of a titanium foil substrate and the distance of an ion source can be compatible with diversified sample analysis, and stable and repeatable long-time mass spectrum detection is achieved on the premise that the integrity of a molecular structure is maintained.

The invention discloses an SPS preparation method and application for sintering and connecting TZM and graphite by using titanium hydride powder in the field of connection of TZM / graphite dissimilar materials, and particularly relates to a TZM / graphite composite material obtained by performing sintering diffusion connection on the TZM and graphite dissimilar materials by using the titanium hydride powder as a middle layer material through an SPS technology. The method has the following advantages that the titanium hydride powder serves as an interlayer material, compared with existing used titanium powder or titanium foil, the titanium hydride powder is environmentally friendly and low in component content, the titanium hydride powder can release hydrogen and generate elemental titanium within the temperature range of 400-800 DEG C, oxidation of titanium can be reduced while a base metal oxide layer can be removed, interdiffusion and solid solution of interface Mo and Ti atoms are promoted, and the service life of the interface Mo and Ti is prolonged. And a good metallurgical bonding interface is formed through reaction with the graphite side, and the TZM / graphite composite material which is free of crack defects, high in interface bonding strength and good in durability is obtained.

The invention relates to a substrate (2) for depositing a film (5), comprising a base layer (3) based on a titanium foil and an intermediate layer (4) based on titanium oxide. The titanium oxide layer is constructed on the titanium foil. Further, a thin film ceramic layer (5) (high-k dielectric barium titanate (BZT)) may be deposited on the intermediate layer (4). The invention further relates to a thin-film device (2) comprising the substrate (2) and a ceramic thin-film layer (5), and to a production method. Furthermore, an electrode, a capacitor, a multilayer capacitor and a medical device comprising the base layer (3), the intermediate layer (4) and the ceramic layer are disclosed.

The badminton racket comprises a badminton racket body, the badminton racket body comprises a racket frame, a racket rod and a handle which are integrally arranged, the racket rod comprises an outer carbon fiber layer and an inner titanium foil film layer, and the racket rod is formed by winding and curing the carbon fiber layer and the titanium foil film layer. According to the badminton racket, the titanium foil film layer is additionally arranged on the racket rod, and the titanium foil film is light in weight and higher than carbon fiber cloth in strength, so that the rigidity and the stability of the racket rod can be improved under the condition that the weight is not obviously increased; the titanium foil film has a good damping characteristic and can absorb vibration during ball hitting, the cushioning effect is improved, and the ball hitting accuracy and the hand feeling comfort degree are improved; the four layers of carbon fiber cloth are laid at the angles of 0 degree, 45 degrees, 90 degrees and 135 degrees respectively to form a structure shaped like a Chinese character'mi ', so that the racket rod is firmer and more durable and not prone to being broken and bent. The racket is novel in structure, capable of effectively improving the hitting feeling of the racket body and suitable for popularization.

The utility model relates to the technical field of titanium foil adhesive tapes, in particular to a high-shielding composite titanium foil adhesive tape. The titanium foil adhesive tape comprises a titanium foil adhesive tape body and a circular frame, the inner wall of the titanium foil adhesive tape body and the circular frame are fixedly installed, the inner surface of the circular frame is fixedly connected with two fixing rods, the ends, close to each other, of the two fixing rods are fixedly connected with a cylinder, one end of the cylinder is rotationally connected with a rotating shaft, and the rotating shaft is fixedly connected with the titanium foil adhesive tape body. An L-shaped plate is fixedly connected to one end of the rotating shaft, a pull rod is slidably inserted into the L-shaped plate, a pull plate is fixedly connected to one end of the pull rod, an abutting plate is fixedly connected to the end, away from the pull plate, of the pull rod, and the abutting plate is slidably connected with the surface of the titanium foil adhesive tape body. The titanium foil adhesive tape solves the problems that when the titanium foil adhesive tape body is used, if the titanium foil adhesive tape body is not flat, an air gap exists, the contact area between the titanium foil adhesive tape body and an adhered object is reduced by the air gap, and the viscosity of the titanium foil adhesive tape body cannot be fully exerted.

The invention discloses a preparation method of a polymer copolymerization modified aqueous zinc ion battery negative electrode, and belongs to the technical field of zinc ion batteries. According to the technical scheme, the preparation method comprises the following steps: carrying out copolymerization reaction on aniline and fluoroaniline, freeze-drying to obtain an aniline-fluoroaniline copolymer, slowly stirring the aniline-fluoroaniline copolymer, zinc powder and a solvent, adding a conductive agent and a binder, and rapidly stirring to prepare slurry; and coating a copper foil or a titanium foil with the slurry to obtain the polymer copolymerization modified aqueous zinc ion battery negative electrode. The polymer copolymerization modified aqueous zinc ion battery negative electrode has the beneficial effects that the polymer copolymerization modified aqueous zinc ion battery negative electrode has good electronic conductivity and excellent interface regulation and control capability, zinc dendrite growth and hydrogen evolution reaction can be effectively inhibited, and the diffusion efficiency of zinc ions is improved, so that the cycling stability and the battery performance of the zinc negative electrode are remarkably improved; the technical problems that an existing modification material is poor in adhesion, low in conductivity, serious in electrode polarization and the like are solved.

The invention discloses a manufacturing process of a high-strength high-temperature-resistant steel material, the steel material adopts a surface layer-transition layer-matrix composite reinforced structure, and the matrix is prepared from the following elements in percentage by mass: less than or equal to 0.030 wt% of C, 16.0-18.0 wt% of Cr, 10.0-14.0 wt% of Ni, 2.0-3.0 wt% of Mo, less than or equal to 2.00 wt% of Mn, less than or equal to 1.00 wt% of Si, less than or equal to 0.045 wt% of P, less than or equal to 0.030 wt% of S, less than or equal to 0.11 wt% of N and the balance of Fe and inevitable impurity elements; the transition layer comprises pure titanium foil and 0.1-0.3% (wt%) of Y2O3, and a Ti-Fe intermetallic compound interface is formed through vacuum hot pressing; and the surface layer adopts a plasma spraying TiC ceramic layer. According to the gradient composite design, through structural innovation and process cooperation, the steel material has better surface hardness, interface bonding strength, matrix tensile strength and high temperature resistance, directional regulation and control of the material performance are achieved, and wide application prospects are shown in the fields of aerospace, biomedicine, energy storage and the like.

The invention discloses a method for improving the performance of a TA4-0. 1B titanium material, and belongs to the technical field of titanium metal material preparation. The oxygen content of the TA4-0. 1B titanium material is controlled to be 0.2-0.4 wt%, and the TA4-0. 1B titanium material contains B with the fixed addition amount being 0.1 wt%, and the balance Ti and inevitable impurities. In the preparation process, TiO2 powder and TiB2 powder are wrapped by pure titanium foil to form a plurality of material bags, the material bags are divided into three equal parts, and sponge titanium is divided into four equal parts; raw materials are sequentially filled in a layered manner according to a manner of'titanium sponge, material package, titanium sponge, material package, titanium sponge, material package and titanium sponge 'and are pressed into columnar material blocks as consumable electrodes. The obtained electrode block is smelted twice through a vacuum self-consuming electric arc smelting furnace, a TA4-0. 1B-xO alloy cast ingot with uniform components is obtained, and the TA4-0. 1B-xO alloy cast ingot is machined through an ingot casting machine and subjected to non-forging direct rolling to form a plate; through fixation of the B content and graded regulation and control of the oxygen content, balance between high strength and high plasticity is achieved, and the yield ratio of the alloy can be effectively improved through coordinated regulation and control of the two elements, so that the application of TA4 titanium materials in the fields of aerospace, medical implants, high-strength structural parts and the like is expanded.

The application relates to the technical field of foil production, in particular to a low-cost high-strength precise titanium foil production process for 3C flexible screens; the process comprises the following steps: S1, blanking: taking a plate or a coiled strip as raw material; S2, rolling: feeding the raw material into a rolling mill to roll to obtain a semi-finished product titanium foil; S3, annealing: feeding the semi-finished product titanium foil into a vacuum furnace to perform annealing treatment to obtain a titanium foil. When the deformation rate is relatively large, the first lubricant at high temperature is sprayed to improve the plastic deformation capacity of the raw material, then the two lubricants are combined, the stress concentration in the raw material is reduced, the processing defects on the surface of the raw material are reduced, and when the deformation rate is relatively small, the second lubricant at low temperature is sprayed, the size of the raw material is more stable, and the machining precision is improved.

The application relates to the field of photocatalysis, in particular to a composite material for photocatalytic degradation of PFOA and a preparation method thereof. The composite material comprises the following steps: step one: using titanium foil as an anode and a nickel sheet as a cathode, carrying out anodic oxidation, and then annealing to obtain TiO2-NT; step two: first, acid pickling TiO2-NT, and then preparing TiO2-NT suspension liquid; adding chloroplatinic acid, a dispersing agent and potassium borohydride into the TiO2-NT suspension liquid to prepare a Pt / TiO2-NT composite material; step three: coating ammonium perrhenate on the Pt / TiO2-NT composite material, and then sintering, repeating 1-2 times to obtain a modified Pt / TiO2-NT composite material; and step four: preparing a MIP-Pt / TiO2-NT composite material through a molecular imprinting technology.

The invention relates to the technical field of metal layered composite materials, in particular to a preparation method of a graphite film / titanium alloy layered composite structure, which comprises the following steps: carrying out plasma treatment on the surface of a graphite film; placing the graphite film and the titanium foil which are subjected to plasma treatment on a substrate, and alternately carrying out ultrasonic consolidation layer by layer to obtain a layered composite material prefabricated blank; and the layered composite material prefabricated blank is put into a vacuum hot pressing furnace to be subjected to bending forming and interface reaction in sequence, and the graphite film / titanium alloy layered composite structure is obtained. The preparation method of the graphite film / titanium alloy layered composite structure aims at solving the problems of heat resistance of titanium alloy used in a high-temperature environment and structural instability caused by overhigh local temperature.

The invention relates to the technical field of bimetal layered composite materials, in particular to a magnesium / aluminum composite plate with synergistically improved strength and plasticity and a preparation method of the magnesium / aluminum composite plate. The preparation method comprises the steps that (1) the magnesium plate, the aluminum plate and the titanium foil are subjected to heat preservation treatment at different temperatures, the heat preservation temperature of the magnesium plate is higher than that of the aluminum plate, and the temperature difference between the magnesium plate and the aluminum plate ranges from 40 DEG C to 70 DEG C; the holding temperature of the titanium foil is lower than that of the aluminum plate, and the temperature difference between the titanium foil and the aluminum plate is 20-50 DEG C; and (2) the magnesium plate, the aluminum plate and the titanium foil which are subjected to heat preservation treatment are stacked according to the sequence of the aluminum plate / the titanium foil / the magnesium plate / the titanium foil / the aluminum plate, then one-pass large-variable rolling forming is conducted immediately, and the magnesium / aluminum composite plate is formed. The method not only can improve the tensile strength of the magnesium / aluminum composite plate, but also can improve the elongation of the magnesium / aluminum composite plate, so that the strength and plasticity of the magnesium / aluminum composite plate are synergistically improved.

The invention discloses a process method for improving the single-time synthesis yield of colorless diamond. The process method comprises the steps of preparing a prefabricated catalyst layer, prefabricating a carbon source layer, assembling, synthesizing at high temperature and high pressure and the like. The preparation of the prefabricated catalyst layer and the prefabricated carbon source layer is performed through one-time synthesis, and the catalyst and the graphite are subjected to pre-nitrogen removal treatment, so that the nitrogen removal efficiency is improved, the use amount of titanium foils can be reduced, and the production cost is reduced; on the other hand, the density of catalyst and carbon source finished products is effectively improved, the contractibility is reduced, the uniformity is improved, the synthesis stability is good in a long process period, the growth cavity is expanded to the maximum extent, the synthesis space is fully utilized, and the single-time synthesis yield can reach 100 ct or above. The prefabricated catalyst layer and the prefabricated carbon source layer are prepared through one-time synthesis, the contractibility of the catalyst and carbon source finished product can be effectively reduced, the uniformity of the catalyst and carbon source finished product can be improved, the current can not be reduced in the synthesis process, and precise fine adjustment is achieved.

This invention relates to the field of plate heat exchanger material processing technology, specifically to a method for preparing corrosion-resistant titanium alloy foil for plate heat exchangers. The preparation method includes the following steps: S1, preparing titanium alloy ingots; S2, preparing billets to be rolled; S3, cooling and cold rolling; S4, post-treatment. This invention involves depositing boron oxide powder within micro-etched micropores, and then coating the surface of the titanium foil with a composite liquid of mesoporous ceramic powder loaded with ostinidine. This forms a protective layer with antibacterial and corrosion-resistant properties on the surface of the warm-pressed titanium alloy billet, thereby preventing direct contact between corrosive media and the titanium alloy foil, reducing the corrosion rate. Furthermore, in plate heat exchangers, coating the titanium alloy with this ostinidine-loaded mesoporous ceramic powder solution helps reduce the growth of microorganisms on the surface of the titanium alloy foil, improving the hygienic performance and operating efficiency of the heat exchanger.

The application discloses an anti-aging and anti-impact AMB silicon nitride ceramic copper-clad plate and a preparation method thereof. The AMB silicon nitride ceramic copper-clad plate is prepared from a ceramic substrate, a first metal foil, a second metal foil, a nano metal layer and a copper-clad plate. The first metal foil is a copper foil or a first alloy foil, and the second metal foil is a titanium foil or a second alloy foil. The inner surface of the copper-clad plate is coated with a nano metal organic solution, and the nano metal layer is formed after drying. The first metal foil, the second metal foil and the two surfaces of the ceramic substrate are sequentially pasted from outside to inside, and the anti-aging and anti-impact AMB silicon nitride ceramic copper-clad plate is obtained by welding. The AMB ceramic copper-clad plate prepared by the method has higher bonding strength, anti-aging performance and anti-impact performance than a conventional silver-copper-titanium solder paste product, has advanced overall performance, and is simple in process, low in cost and suitable for industrial promotion.