81 results about "Titanium carbide" patented technology

To provide a friction material that exhibits superior wear resistance and fade resistance under high load conditions, among other frictional performance characteristics. [Solution] A friction material comprising a fibrous base material, a friction modifier, and a binder, wherein the copper content is 0.5% by mass or less in terms of copper element, the fibrous base material contains steel fibers, the steel fiber content is more than 20% by mass and less than 50% by mass, and the friction modifier contains titanium carbide powder.

The application provides a flexible encapsulated aerogel composite material and a preparation method thereof. The flexible encapsulated aerogel composite material uses titanium carbide as a conductive filler, uses carboxylated cellulose nanofiber as an aerogel skeleton, and uses a thermoplastic polyurethane / silicon wrapped ammonium polyphosphate composite material as an encapsulated outer layer. The flexible encapsulated aerogel composite material prepared by using the technical scheme has super-high electromagnetic shielding efficiency, can obviously reduce the fire risk of the aerogel, and reduce the release of heat and toxic smoke gas in the combustion process, so that the application of the flexible encapsulated aerogel composite material in wearable materials, home decoration, aerospace, electronic communication, transportation and the like is effectively widened.

This invention discloses a wheat-specific fertilizer suitable for rice-wheat rotation and its preparation method, comprising the following steps: mixing equal volumes of carboxymethyl chitosan solution, composite biochar dispersion, and agar solution, then adding sodium tripolyphosphate solution dropwise, stirring, allowing to stand, dialyzing, and freeze-drying to obtain hydrogel particles; swelling the hydrogel particles in a mixed aqueous solution of urea and superphosphate, filtering, and vacuum drying to obtain the wheat-specific fertilizer suitable for rice-wheat rotation; this invention uses a coating material to coat composite biochar powder, nitrogen fertilizer, and phosphate fertilizer, and improves the utilization rate of nitrogen and phosphate fertilizer through the slow-release effect of the coating material; by adsorbing fixed trace metal elements through the coating material, the slightly acidic state of the phosphate fertilizer during dissolution is used to convert the adsorbed fixed trace metal elements into a free state, and then titanium aluminum carbide promotes the movement of the free trace metal elements, thereby promoting the absorption and utilization of trace metal elements by wheat roots and improving wheat yield and quality.

The application discloses application of a titanium carbide loaded osmium metal hydrogen evolution and deuterium evolution catalyst in water electrolysis separation of hydrogen isotopes, the carrier of the hydrogen evolution and deuterium evolution catalyst is titanium carbide, the active component is osmium metal loaded on the carrier, and the loading amount of the osmium metal is 7-15% of the mass of the carrier. The hydrogen isotope separation efficiency is improved by improving the composition and structure of the hydrogen evolution and deuterium evolution catalyst. The osmium metal is loaded on the titanium carbide base, the hydrogen evolution selectivity is improved and the energy consumption is reduced through strong mutual action of the metal-carrier.

This disclosure relates to the field of titanium extraction technology from blast furnace slag, and particularly to a method for controlling the titanium carbide content using iron oxide powder, comprising the following steps: Step 1, when the slag generated by the carbon-blending of titanium-containing blast furnace slag reaches the smelting endpoint, a sample is taken to detect the mass percentage of titanium carbide in the slag; Step 2, when the mass percentage exceeds a set threshold, iron oxide powder is added to the slag to control the mass percentage within a reference range. This disclosure solves the problem of easy bending of titanium slabs with large aspect ratios during the upsetting process. This disclosure also solves the problem of high TiC content in existing titanium-containing blast furnace slag carbon-blending processes. By adding iron oxide powder to react with excess TiC in a directional manner, the TiC content can be stably controlled within a reference range, effectively reducing slag viscosity, ensuring smooth slag discharge, and avoiding safety hazards such as equipment blockage; at the same time, it improves the temperature control effect of the subsequent boiling chlorination reaction, and improves the efficiency and quality of subsequent titanium resource recovery.

The utility model relates to hard alloy material heat treatment technical field, more specific is tungsten-containing titanium carbide hard alloy heat treatment device, including heat treatment box, the inside of heat treatment box is surrounded and is installed multiple electric heating roller I, is installed rotatable alloy positioning spare on the heat treatment box of multiple electric heating roller I inboard, the upper end of heat treatment box is covered with the box cover. Alloy insert fittings include motor through motor frame fixed connection at the bottom surface of heat treatment box, the output shaft of motor is connected with the pivot through the shaft coupling, the pivot rotation is connected in the bottom center position of heat treatment box, and the pivot is fixedly connected with the turntable, and two vertical frames are symmetrically fixed on the turntable in the inside of heat treatment box, and the inner positioning plate is fixed between two vertical frames, and multiple insertion holes are arranged around on the inner positioning plate. Advantageous effect is to make each alloy piece be in the state of mutual independence, can make each piece of alloy heat fully.

The application relates to the technical field of materials, in particular to an anti-erosion low-carbon backing brick refractory material and a preparation method thereof, which comprises fused magnesia coarse aggregate, fused magnesia medium aggregate, fused magnesia fine powder, zircon carbide anchoring modified flaky graphite, boron-doped lignin-based titanium carbide composite powder, nano hafnium carbide and phenolic resin binder; the synergistic protection of the three functional components of the zircon carbide anchoring modified flaky graphite, the boron-doped lignin-based titanium carbide composite powder and the nano hafnium carbide effectively solves the problems that, under the VD vacuum degassing working condition, the MgO in the existing low-carbon magnesia-carbon backing brick reacts with residual carbon in the brick to cause gasification, and the antioxidation additive promotes the reaction and aggravates the damage to the brick structure.

This invention discloses a method for preparing a silver-cobalt bimetallic single-atom supported titanium carbide / titanium dioxide photocatalyst and its application in the selective photocatalytic reduction of carbon dioxide to methane. The method uses layered titanium carbide (Ti3C2 MXene) as a substrate, utilizing its abundant titanium vacancies to achieve in-situ anchoring of silver and cobalt atoms under mild conditions, obtaining atomically dispersed Ag and Co bimetallic single-atom active sites. Subsequently, a titanium dioxide (TiO2) layer is grown in-situ on the Ti3C2 MXene surface through hydrothermal treatment, constructing a tightly coupled Ti3C2 / TiO2 heterostructure, thereby forming a bimetallic single-atom photocatalytic interface with a synergistic effect. The prepared photocatalyst is applied for the first time in the field of photocatalytic carbon dioxide reduction, exhibiting excellent carbon dioxide photoreduction performance under visible light irradiation without sacrificial reagents, and showing high selectivity and a high methane formation rate. The preparation process of this invention is simple and highly controllable, and the obtained bimetallic single-atom photocatalyst provides a new catalyst design concept and technical solution for the high-selectivity conversion of carbon dioxide and the development of related new energy technologies.

The application provides a dual-mode immune probe based on a titanium carbide SERS substrate and rare earth doped sodium yttrium fluoride nanoparticles and a preparation method and application thereof, and comprises a titanium carbide / molybdenum disulfide composite immune substrate and a NaYF4:Yb,Er immune probe, wherein 78% Y, 20% Yb and 2% Er are contained in the NaYF4:Yb,Er, and the preparation method comprises the following steps: (S10) preparing titanium carbide powder by using an acid etching method; (S20) preparing a titanium carbide / molybdenum disulfide composite immune substrate; and (S30) preparing a NaYF4:Yb,Er immune probe, and the application is suitable for application in detection of prostate cancer, and the detection has high efficiency, high accuracy and high sensitivity, and is suitable for clinical popularization and application.

This invention discloses a high-temperature oxidation-resistant and wear-resistant titanium carbide reinforcement layer on the surface of titanium alloys and its preparation method. This titanium carbide high-temperature oxidation-resistant and wear-resistant reinforcement layer is generated in situ on the surface of a titanium alloy substrate using nanodiamond as the carbon source. The layer is mainly composed of titanium carbide and forms a metallurgical bond with the titanium alloy substrate. Its thickness is no more than 10 μm and it is dense and uniform. This invention overcomes the bottlenecks of existing surface modification technologies, providing reliable technical support for the widespread application of titanium alloys in high-end fields such as aerospace, energy, and chemical engineering, and has significant economic and social benefits.

The application discloses a kind of preparation and application of N, P doped titanium carbide nano quantum dot fluorescent probe, belong to fluorescence sensing technical field.The application uses ethylenediamine, diammonium hydrogen phosphate as nitrogen source and phosphorus source respectively to synthesize the N, P doped Ti3C2MXene quantum dot of blue light emission, and the N, P doped Ti3C2MXene quantum dot has good stability and high quantum yield.Based on the fact that tetracycline (TC) can quench the fluorescence of N, P doped Ti3C2MXene quantum dot fluorescent probe, the N, P doped Ti3C2MXene quantum dot fluorescent probe is used for tetracycline detection.The fluorescent probe has high selectivity, wide linear range and high sensitivity, providing a new method for tetracycline detection in milk.

This invention relates to the field of silicon nitride composite materials, specifically to a solid solution reinforced silicon nitride-based network structure ceramic material, its preparation method, and its application. The invention involves a first mixing and coating of silicon nitride powder and a sintering aid, followed by a first sintering to obtain a single-layer shell-coated powder. A second mixing and coating with TiC is then performed, followed by a third mixing and coating with ZrB2. After pre-pressing and shaping, a second sintering is conducted to obtain a silicon nitride-based titanium carbide-zirconium boride solid solution network ceramic. By sequentially coating TiC and ZrB2, this invention achieves direct physical contact between TiC and ZrB2, significantly shortening the atomic diffusion path during sintering and forming a high-performance (Ti,Zr)(C,N) solid solution phase. Utilizing the solid solution strengthening effect and unique network structure of the TiC-ZrB2 system, the technical barrier of difficult physical contact and solid solution reaction between multiple reinforcing phases is successfully overcome, achieving a synergistic improvement in the material's strength and toughness.

The application discloses a preparation method of a titanium carbide doped polymer solid electrolyte, which can effectively reduce the crystallinity of PEO, enhance the ionic conductivity of the polymer solid electrolyte and widen the electrochemical window by grafting PCL (polycaprolactone) on the surface of a two-dimensional material titanium carbide (MXene) and blending the PCL with a PEO (polyethylene oxide) blend.The steps adopted by the application are as follows: firstly, PCL is grafted on the surface of MXene through a one-pot method; then, the grafted material is mixed with PEO and LiTFSI (lithium bis(trifluoromethanesulfonyl)imide) in a certain proportion, is subjected to ultrasonic oscillation and is uniformly mixed by heating; finally, the solution is poured on a glass culture medium, the solvent is volatilized at room temperature, the solvent is removed by heating, and a solid polymer electrolyte film is obtained.The polymer solid electrolyte film prepared by the method of the application has good mechanical properties, high ionic conductivity, a wide electrochemical stability window, stable charge and discharge processes of an assembled battery and excellent cycle performance.

This invention relates to the field of diamond heat sinks, specifically a diamond heat sink and its preparation method, comprising: in-situ growth of a silicon carbide nanowire array on a diamond surface; sputtering a titanium carbide layer on the diamond surface using magnetron sputtering to obtain a titanium carbide / silicon carbide nanowire array composite structure; placing solder paste between the diamond and a metal sheet to form a brazed component, wherein the titanium carbide / silicon carbide nanowire array composite structure in the brazed component faces the side of the solder paste; and finally vacuum brazing. This invention has good process compatibility, is easy to realize industrial application, and effectively solves the problems of weak interface bonding, high thermal stress, and high interface thermal resistance when connecting diamond films and metals. It has important application value for heat dissipation of high-power electronic devices.

The application discloses an alloy material and a preparation method and a mold thereof. The alloy material comprises tungsten carbide, a binder phase, tantalum carbide, chromium, and a carbon compound, wherein the carbon compound comprises at least one of titanium carbide, niobium carbide and vanadium carbide. The mold prepared from the alloy material can be used for preparing lithium battery tabs. The material has good wear resistance, and is not prone to wear, corner collapse, fatigue cracks and the like in high-frequency and high-impact tab stamping operations, so that the service life of the mold is long, and the production continuity and tab forming precision are not affected.

This application provides a current collector, electrode sheet, secondary battery, battery module, battery pack, and electrical device. The current collector includes a substrate and an adsorption coating disposed on the substrate. The adsorption coating includes a binder and titanium carbide with a two-dimensional layered structure. The two-dimensional layered titanium carbide has multiple layers of stacked titanium carbide nanosheets, and the interlayer spacing H between adjacent titanium carbide nanosheets satisfies: 3nm ≤ H ≤ 5nm. The current collector, electrode sheet, secondary battery, battery module, battery pack, and electrical device of the embodiments of this application have a strong carbon dioxide adsorption capacity, which can improve the stability of the secondary battery during operation and extend its cycle life.

This invention belongs to the field of micro-electromechanical biosensing technology, specifically relating to a flexible sensor for real-time monitoring of gallic acid content in plants, its preparation method, and its application. The flexible sensor includes a flexible substrate and a working electrode, a reference electrode, and a counter electrode disposed on the substrate. The working electrode is a laser-induced graphene electrode (LIG) with its surface sequentially modified with black phosphorus nanosheets (BP), sheet-like titanium carbide (MXene), and manganese phosphorus sulfur (MnPS3). This flexible sensor can achieve online detection and analysis of gallic acid in plant tissues at different stages. Because it is a patch-type adaptive sensor for plant surfaces, it does not cause fundamental damage to the detected material, allowing the material to continue growing until maturity. Furthermore, the layer-by-layer assembly of the working electrode with black phosphorus nanosheets, MXene, and MnPS3 achieves highly sensitive detection of gallic acid, offering advantages such as lightweight portability, excellent electrical performance, and high integration.

To provide brake discs that are highly resistant to corrosion and wear, less prone to delamination and interlayer break-up, and ensure thermal and mechanical performance, thereby demonstrating long-term reliability. [Solution] The brake band is made of gray cast iron or steel, and the disc has a base layer that covers at least one of the two braking surfaces of the brake band. The base layer consists of a titanium and / or titanium alloy matrix containing one carbide and defines the tribologically active surface of the disc. Alternatively, the base layer consists of a layer of titanium and / or titanium alloy, and the coating layer on top of it consists of a layer based on one or more carbides and defines the tribologically active surface of the disc. The one or more carbides are selected from the group consisting of titanium carbide, tungsten carbide, chromium carbide, niobium carbide, molybdenum carbide, and silicon carbide. An intermediate fusion layer exists at the interface between the base layer and the gray cast iron or steel brake band. The base layer has a crystalline structure, and its growth direction is mainly perpendicular to the braking surface.

This invention discloses a method for preparing a flexible temperature sensor based on a calcium ion-silk fibroin-two-dimensional material composite film, comprising the following steps: 1) preparing two-dimensional titanene; 2) preparing silk fibroin; 3) adding the obtained silk fibroin and polyvinyl alcohol to a calcium-containing composite film. 2+ A mixed solution was obtained by adding formic acid to the solution; Ca 2+ The concentration of Ca²⁺ is 0.3 mol / L~0.5 mol / L; 4) After dispersing the two-dimensional titanium carbide in deionized water, it is added to the mixed solution obtained in step 3), and stirred to obtain an electrospinning solution; the two-dimensional titanium carbide is 1 wt%~5 wt% of the silk fibroin protein content; 5) The electrospinning solution obtained in step 4) is electrospinned to obtain a spun film, and this film is encapsulated with polydimethylsiloxane to obtain a flexible temperature sensor. Ca²⁺, as a "molecular solder", firmly and intelligently integrates the flexible silk fibroin protein matrix with the highly conductive two-dimensional titanium carbide pathway, constructing a dynamic sensitive network that can work efficiently and stably under temperature field.

The application discloses a 45 steel based on a double slow cooling process and a preparation process thereof, and belongs to the technical field of 45 steel preparation, and comprises a 45 steel base material and a modified titanium carbide reinforced alloy composite coating formed on the surface of the 45 steel base material; the 45 steel base material is prepared through smelting, continuous casting, three-section slow cooling after continuous casting, rolling, four-section slow cooling after rolling and annealing processes; the modified titanium carbide reinforced alloy composite coating comprises an alloy matrix and modified titanium carbide powder dispersed in the alloy matrix; the modified titanium carbide powder comprises a titanium carbide core, an ion implantation modification layer formed on the surface of the titanium carbide core and a nano-oxide coating layer coated on the surface of the ion implantation modification layer. Through the above mode, the double slow cooling pretreatment process of the 45 steel base material is used, and the stress hidden danger is further eliminated from the base material side, so that a reliable guarantee is provided for long-term service of the composite coating.

This invention proposes a wear-resistant coating for brake discs and its preparation method, belonging to the field of surface modification technology. This invention prepares an Fe-Ti-C-B alloy coating on the working surface of a steel-based brake disc using laser cladding technology. Through precise alloy composition design, the high-temperature lubricating phase titanium boron compound and the hard phase titanium carbide are simultaneously precipitated in situ from the alloy during laser cladding, forming a eutectic network structure of titanium carbide and titanium boron compound. This achieves a seamless, all-metallurgical bond with the substrate. The titanium boron compound undergoes a tribochemical oxidation reaction under the coupling effect of high temperature and shear stress, generating a glassy lubricating film for self-lubrication, eliminating the need for external solid lubricants. This invention achieves a seamless, all-metallurgical bond between the coating and the substrate, with the hard phase and the high-temperature lubricating phase interlocking and coexisting at the nanoscale. It possesses a wide-temperature-range self-lubricating function, improving the coating's structural integrity, wear resistance, and lubrication synergy. It is suitable for steel-based brake discs in fields such as rail transportation, high-speed trains, and construction machinery.

This invention discloses a high-temperature oxidation-resistant strengthening surface layer for nickel-based alloys and its method. The layer is formed on the surface of a nickel-based alloy substrate, creating a continuous interface with the substrate through metallurgical bonding. It utilizes nanodiamond as a carbon source and is formed through vacuum heat treatment to create either a grain-refining region or a grain-refining region combined with a titanium carbide ceramic layer. The grain-refining region forms a continuous, defect-free cross-section with the nickel-based alloy substrate. The titanium carbide ceramic layer is generated in situ by the reaction of nanodiamond with a pre-formed titanium layer during vacuum heat treatment. This invention can form grain-refining regions on the surface of nickel-based alloys, or further form a uniform and dense titanium carbide ceramic layer, significantly improving the surface hardness, wear resistance, and high-temperature oxidation resistance of nickel-based alloys.

The application provides a substrate with an erosion-resistant coating and a manufacturing method thereof, a polycrystalline diamond composite material, a drill bit and a drill head, wherein the substrate with the erosion-resistant coating comprises a tungsten carbide-cobalt substrate and an erosion-resistant coating coated on the surface of the tungsten carbide-cobalt substrate; the erosion-resistant coating comprises one or a combination of several of titanium nitride, titanium carbide and titanium aluminum nitride. The application also provides a polycrystalline diamond composite material comprising the substrate with the erosion-resistant coating, a drill bit made of the polycrystalline diamond composite material and a drill head comprising the drill bit. The substrate with the erosion-resistant coating, the polycrystalline diamond composite material made of the substrate, the drill bit made of the composite material and the drill head comprising the drill bit all have excellent corrosion resistance (i.e. electrochemical corrosion resistance) and erosion resistance, so that the service efficiency of the drill bit can be improved and the service life of the drill head can be prolonged.

This invention discloses a method for determining the solution treatment temperature required for heating high-titanium microalloyed high-strength structural steel slabs, relating to the field of hot rolling technology. The method includes the following steps: S1, calculating the solution treatment temperature of niobium-titanium carbide; S2, normalizing the solution treatment temperature calculated in step S1 to obtain a normalization temperature T1; S3, using T1 as the center temperature and with a gradient of 10℃, setting several adjustment temperatures to heat and solution treat the high-titanium microalloyed high-strength structural steel slabs, followed by rolling them into hot-rolled coils. The microalloying elements in the high-titanium microalloyed high-strength structural steel include Ti. This invention establishes a method for determining the solution treatment temperature required for heating high-titanium microalloyed high-strength structural steel slabs. This method determines the most reasonable solution treatment temperature required for hot rolling of high-titanium microalloyed high-strength structural steel slabs, which is beneficial for fully utilizing the strengthening effect of microalloying elements, achieving economical and efficient production while ensuring that the product strength meets requirements.

The present invention provides elastic wave devices, filters, and multiplexers capable of improving power handling. [Solution] The elastic wave device comprises a piezoelectric layer 15, a first layer 31 provided on the piezoelectric layer 15 which is a titanium aluminum nitride layer, a chromium aluminum nitride layer, a chromium nitride layer, a diamond-like carbon layer, or a titanium carbide nitride layer, and a second layer 32 provided on the first layer 31 which is a metal layer formed of a metal with a lower electrical resistivity than the first layer 31, and includes a pair of comb-shaped electrodes 22 including electrode fingers 23.

This invention discloses a field-effect transistor sensor based on titanium carbide MXene / MIP, its fabrication method, and its application, belonging to the field of chemical sensor technology. The sensor includes a substrate, a transistor, and a sensing electrode. The sensing electrode is connected to the transistor gate via a wire, and its surface is sequentially modified with a titanium carbide MXene layer and a molecularly imprinted polymer layer targeting perfluorooctanoic acid (PFOA). The fabrication method includes: preparing an MXene dispersion by etching using a LiF / HCl system, drop-coating it onto a conductive substrate, electropolymerizing it using PFOA as a template to form a MIP layer, and finally assembling it with the transistor. This invention utilizes the high conductivity of MXene and the specific recognition capability of MIP to convert the interfacial potential change caused by PFOA binding into a significant drain current change through a solution gate control mechanism. This sensor is simple to fabricate, low in cost, and has good stability, enabling highly sensitive and specific detection of trace amounts of PFOA in aqueous solutions, and is suitable for on-site environmental monitoring.

Device with: a first group of nanostructures (66) on a substrate (50), wherein the first group of nanostructures (66) has a first channel region; a second group of nanostructures (66) on the substrate (50), wherein the second group of nanostructures has a second channel region; a dielectric gate layer (112) enclosing each of the first and second groups of nanostructures (66); a first work function setting layer (114A) on the dielectric gate layer (112) of the first group of nanostructures (66), wherein the first work function setting layer (114A) surrounds each of the first group of nanostructures (66) and the first work function setting layer (114A) has an n work function metal; an adhesive layer (114B) on the first work function setting layer (114A), wherein the adhesive layer (114B) encloses each of the first group of nanostructures, and the adhesive layer (114B) comprises titanium aluminum carbide, tantalum aluminum carbide or silicon-doped tantalum aluminum carbide; a protective layer (114F) between the first work function setting layer (114A) and the adhesive layer (114B) on the first group of nanostructures (66), wherein the protective layer (114F) surrounds each of the first group of nanostructures (66) and comprises amorphous silicon; wherein the adhesive layer (114B) fills a region between respective parts of the protective layer (114F) on adjacent nanostructures of the first group of nanostructures (66) and thus separates the respective parts of the protective layer (114F) on adjacent nanostructures of the first group of nanostructures (66); a second work function setting layer (114C, 114D) on the adhesive layer (114B) of the first group of nanostructures (66) and on the dielectric gate layer (112) of the second group of nanostructures (66), wherein the second work function setting layer (114C, 114D) has a p-work function metal and the p-work function metal is different from the n-work function metal; and a fill layer (114E) on the second exit work adjustment layer (114C, 114D).

The application belongs to the technical field of electrochemical water decomposition, and discloses carbon-coupled nickel-iron bimetallic hydroxide and an in-situ rapid preparation method and application thereof. The in-situ rapid preparation method comprises the following steps: 1) dispersing two-dimensional titanium carbide loaded with single atoms in a water-ethanol mixed solution to obtain a suspension A; and 2) spraying the suspension A to the surface of a clean iron-nickel alloy, and air-drying, so that carbon-coupled nickel-iron bimetallic hydroxide is generated on the surface of the iron-nickel alloy by in-situ construction. The single atoms include one or more than one of Mn, Fe, Co, Ni, Cu and Ru. The method is convenient and efficient, and can realize the in-situ construction of carbon-coupled nickel-iron bimetallic hydroxide on the surface of the iron-nickel alloy in one step within 30 minutes, and is easy to scale up. The nickel-iron bimetallic hydroxide is applied as an efficient catalyst for oxygen evolution reaction in the field of electrochemical water decomposition, effectively improves the electron transmission efficiency inside the catalyst under industrial large current density, and reduces the oxygen evolution overpotential.