559 results about "Titanium carbide" patented technology

The invention relates to the technical field of flux-cored wires. The preparation method comprises the following steps: weighing the following raw materials in parts by weight: 4-6 parts of chromium carbide powder, 7-9 parts of molybdenum powder, 6-8 parts of nickel powder, 10-15 parts of niobium powder, 15-18 parts of tungsten carbide powder, 7-11 parts of a modified titanium carbide agent, 5-8 parts of a blending agent added based on boron and 2-4 parts of 30-mesh natural graphite; 1-2 parts of sodium fluosilicate; 1-2 parts of aluminum powder; and 70-75 parts of iron powder. The flux-cored wire can adapt to complex service environments of parts such as rollers and continuous casting crystallizers in the metallurgical industry, the service life of the parts subjected to surfacing repair is prolonged, the production efficiency of the parts subjected to surfacing repair is improved, the obtained flux-cored wire achieves balance of high-temperature performance, mechanical performance and low-temperature stability, and the comprehensive applicability of products is improved.

The invention belongs to the field of preparation of a lithium ion battery positive electrode material, and particularly relates to an organic metal framework coated lithium cobalt oxide positive electrode material as well as a preparation method and application thereof. According to the scheme, a lithium cobalt oxide material, methanol, dimethyl imidazole cobalt, titanium carbide and sodium dihydrogen phosphate monohydrate are mixed according to the mass ratio of 1: (0.070-0.080): (0.001-0.002): (0.001-0.003): (0.001-0.002) and sintered, and the lithium cobalt oxide positive electrode material coated with the organic metal frame is obtained. According to the scheme, by utilizing the synergistic effect of a metal organic framework coating layer formed by pyrolysis of dimethyl imidazole cobalt, a three-dimensional conductive network constructed by titanium carbide and a phosphate interface layer, the mechanical strength of the coating layer is synergistically improved, lithium ion diffusion is accelerated, the internal resistance of the battery is reduced, the side reaction of an electrode / electrolyte is reduced, and the volume expansion of lithium cobalt oxide and cobalt dissolution are inhibited; and the high-temperature cycling stability and the rate capability of the lithium cobalt oxide battery are obviously improved. Meanwhile, the invention also provides an application of the organic metal framework coated lithium cobalt oxide positive electrode material in a battery.

This invention discloses an Al-Ti-C-Ce master alloy using titanium carbide as both Ti and C sources, its preparation method, and its application. Titanium carbide powder is mixed with aluminum powder and ball-milled to obtain an Al-coated TiC core-shell composite powder. The core-shell composite powder is pressed into preforms. These preforms are then pressed into the bottom of molten aluminum in batches using graphite bell jars. The mixture is first held at 760-850℃, then cooled to 700-750℃. An Al-30Ce master alloy is then added, followed by a second holding period. The mixture is then slag-removed and refined, and finally cast into a mold to obtain the Al-Ti-C-Ce master alloy. The Al-Ti-C-Ce master alloy provided by this invention refines the grain size of A356 alloy to 106 μm (ASTM grade 5), and even in low-content systems, a grain size refinement level of less than 120 μm can be maintained.

The invention relates to the technical field of welding materials, in particular to a titanium carbide reinforced iron-based wear-resistant corrosion-resistant flux-cored wire for surfacing on the surface of a conveying roller. According to the specific technical scheme, the flux core comprises, by mass, 10%-20% of graphite, 25%-35% of ferrotitanium, 2%-6% of ferrovanadium, 3%-8% of electrolytic manganese metal, 2%-10% of ferromolybdenum, 5%-15% of ferrosilicon, 2% of aluminum-magnesium alloy and the balance Fe powder. According to the flux-cored wire prepared through the flux core, the surfacing alloy obtained through electric arc surfacing is good in surfacing manufacturability, attractive in weld joint forming and small in surface air hole number, and the flux-cored wire has high hardness, high-temperature abrasion resistance and corrosion resistance.

The invention discloses a nano-diamond reinforced powder metallurgy brake pad friction body material and a preparation method thereof, and relates to a brake pad friction body material and a preparation method thereof. The problem that in the prior art, the stability of a braking system of a train at a high running speed cannot be achieved is solved. The friction body material comprises a matrix component, a lubricating component, a friction component and a basic reinforcing component, wherein the sum of the mass percentages of the matrix component, the lubricating component, the friction component and the basic reinforcing component is 100%; wherein the mass percent of the copper powder in the matrix component is 50%-70%, and the mass percent of the iron powder in the matrix component is 10%-30%; the mass percent of the lubricating component is 10%-20%; the mass percent of the friction component is 1%-5%; the mass percent of the nano-diamond in the enhanced component is 0.1%-1%; the friction component is composed of one or more of silicon dioxide, aluminum oxide, titanium carbide, tungsten carbide, silicon carbide powder and zirconium oxide powder; the lubricating component is composed of one or more of graphite, carbon nanotubes and molybdenum disulfide. Belongs to the technical field of powder metallurgy.

The application discloses a high-temperature-resistant and high-barrier composite film and a preparation method thereof, and relates to the technical field of layered products, which comprises A, B and C layers in sequence; the A layer comprises a temperature-resistant layer, a substrate layer and a barrier layer in sequence; the B layer comprises a substrate layer, a connecting layer, a barrier layer, an aluminum plating layer and a protective layer in sequence; the C layer is a heat-sealing layer; the preparation raw materials of the temperature-resistant layer material comprise aluminum oxide and titanium nitride; the preparation raw materials of the barrier layer material comprise ethylene-vinyl alcohol copolymer, succinamic acid, furoinic acid and carbon nanotubes; and the preparation raw materials of the heat-sealing layer material comprise titanium carbide, high-density polyethylene, metallocene polyethylene and zinc stearate. The high-temperature-resistant and high-barrier composite film provided by the application has excellent high-temperature resistance and barrier properties.

The invention relates to the technical field of brake pads, in particular to a brake pad capable of reducing abrasion of a brake disc and a preparation technology thereof.The brake pad comprises, by weight, 20%-32% of reinforcing fibers, 12%-18% of a binder, 22%-34% of a friction regulator and 24%-38% of filler and functional additives, the reinforced fibers are at least one of titanium carbide coated carbon fibers, steel fibers and aluminum silicate ceramic fibers. According to the invention, the reinforced fibers construct a high-strength heat conduction network, and heat is quickly dispersed to reduce thermal stress concentration; the binder ensures the structural stability at high temperature; the friction regulator optimizes a friction coefficient curve through the synergistic effect of lubrication and friction increasing, and high-temperature fluctuation is avoided; the filler and the functional additive enhance the heat absorption and buffering capability, and adjust pores to relieve thermal shock. All the components have a synergistic effect, so that hot cracks of the brake disc can be reduced, and the crack resistance and the brake stability under extreme working conditions are improved.

The invention provides a PCBN composite material and a preparation method thereof.The preparation method comprises the steps that two or more of zirconium oxide, titanium nitride, silicon nitride, titanium diboride, silicon carbide, titanium carbide, titanium carbonitride, aluminum oxide and aluminum nitride are mixed, and ceramic composite powder is prepared; the CBN micro powder and a metal binding agent are subjected to ball milling and mixing, and CBN pre-composite micro powder is prepared; mixing the CBN pre-composite micro powder with the ceramic composite powder to obtain a premix, placing the premix in a mold for pre-pressing to obtain a blank piece, and then assembling the blank piece for sintering to obtain a PCBN composite material; the mass percentage content of the ceramic composite powder is 5%-40%, the mass percentage content of the metal binding agent is 15%-30%, and the mass percentage content of the CBN micro powder is 45%-65%. According to the method, the toughness and the stability of the PCBN cutter can be improved on the premise of low content of CBN (Cubic Boron Nitride).

Tungsten powder, molybdenum powder, titanium carbide powder and tungsten-copper composite powder are mixed to obtain mixed powder, the mixed powder is pressed and formed to obtain a formed blank, the formed blank is sintered to obtain a ceramic reinforced tungsten framework, the ceramic reinforced tungsten framework is subjected to copper infiltration treatment, and the tungsten-infiltrated copper material is obtained. Titanium carbide and molybdenum are introduced when the tungsten framework is sintered, the strength of the tungsten framework is effectively improved through the solid solution strengthening effect of molybdenum and the second phase strengthening effect of titanium carbide, then the high-temperature strength of the tungsten infiltrated copper material is remarkably improved, meanwhile, the density of the material can be reduced, and weight reduction of tungsten infiltrated copper is achieved. Besides, in the process of sintering the ceramic reinforced tungsten framework, superfine tungsten-copper composite powder is introduced, the sintering performance of the tungsten framework can be remarkably improved, the subsequent copper infiltration effect can be optimized, and therefore the tungsten infiltrated copper material is uniform in component structure, the ablation resistance of the light ablation-resistant tungsten infiltrated copper material is excellent, and the density is greatly reduced compared with existing tungsten infiltrated copper.

The invention discloses a PET solid medicinal hard sheet and a preparation method thereof, the PET solid medicinal hard sheet comprises PET, a stabilizer, a plasticizer, a lubricant and an antioxidant, the stabilizer comprises a modified nano titanium carbide sheet, hydroxymethyl cellulose and a stability regulator, the modified nano titanium carbide sheet contains Ti3C2A, and A is an oxygen-containing or fluorine-containing functional group. According to the invention, the interaction between the modified nano titanium carbide sheet and hydroxymethyl cellulose is utilized to form a sheet-line combined structure with a limiting effect on the plasticizer, so that the emigration rate of the plasticizer is greatly reduced, and meanwhile, the stability of the material is also well promoted.

The invention relates to the technical field of alloy powder preparation, and particularly discloses alloy powder for laser surfacing and a preparation method thereof, and the alloy powder for laser surfacing comprises 8-12% of nickel (Ni), 4-6% of chromium (Cr), 2-3% of molybdenum (Mo), 1-2% of boron (B), 10-15% of titanium carbide (TiC), 0.5-1% of yttrium oxide (Y2O3), 0.5-1% of silicon (Si), 0.1-0.3% of carbon (C) and the balance of iron (Fe). Fe is used as a matrix, corrosion-resistant and solution strengthening elements such as Ni, Cr and Mo are accurately matched, a low-content Y2O3 rare earth element and a TiC nano strengthening phase are introduced, Y2O3 effectively inhibits grain coarsening in the surfacing process, the brittleness problem caused by the traditional high rare earth content is avoided, TiC nano particles are evenly dispersed in the matrix and form a composite strengthening structure with a Cr7C3 hard phase, the hardness of a surfacing layer is improved, and the hardness of the surfacing layer is improved. The wear-resistant life is prolonged.

The invention relates to the field of laser cladding powder, in particular to wear-resistant and corrosion-resistant laser cladding powder and a preparation method thereof. The laser cladding powder is used for solving the problem that a cladding layer formed by existing laser cladding powder is poor in abrasion resistance and corrosion resistance. According to the laser cladding powder, the carbon nano tube loaded lanthanum-yttrium oxide powder and the copolymer coated titanium diboride powder are added, and the carbon nano tube and the lanthanum-yttrium oxide have a synergistic effect to refine grains, so that the corrosion resistance of a cladding layer is improved, and the carbon nano tube has good wear resistance; after the surface of the titanium diboride powder is coated with the copolymer, the dispersity of the titanium diboride is improved, a product decomposed by the copolymer reacts with the titanium diboride under the action of laser to generate titanium carbide, and the wear resistance of a cladding layer is enhanced; the laser cladding powder is suitable for prolonging the service cycle of a mold, can be used for surface strengthening of mine equipment parts, enhances the wear resistance and corrosion resistance of the mine equipment parts, reduces the maintenance frequency of the equipment, and can provide an effective solution for surface strengthening of parts in various industrial fields.

The invention belongs to the field of metal material processing, and particularly relates to a multi-element nickel alloy composite welding wire with low thermal crack sensitivity and a preparation method of the multi-element nickel alloy composite welding wire with the low thermal crack sensitivity. The welding wire comprises the following powder raw materials in parts by weight: 0.01 to 0.05 percent of C, 0.10 to 0.20 percent of Si, 28.5 to 30.5 percent of Cr, 7.0 to 11.0 percent of Fe, less than or equal to 1.0 percent of Mn, 1.0 to 2.0 percent of Co, 4.0 to 5.0 percent of Mo, 0.001 to 0.005 percent of B, 0.1 to 0.2 percent of Al + Ti, 0.005 to 0.020 percent of Zr, 1.0 to 2.0 percent of Nb, 0.1 to 0.4 percent of Ta, 0.5 to 1.0 percent of Sn, 0.20 to 0.30 percent of RE, less than 0.005 percent of S, less than 0.005 percent of P and the balance of Ni. And the plating layer comprises a titanium carbide layer and a nickel layer from inside to outside. A welding wire raw material is subjected to smelting, high and low temperature refining, annealing, forging and rolling, multi-pass drawing-annealing, solid solution-aging treatment and acid pickling, coating and plating to obtain the nickel-based alloy welding wire, and the problems that in the prior art, when a nickel-based alloy welding material is used for welding, cracks are prone to being generated, and the strength is low due to hot corrosion can be effectively solved.

The invention discloses a heat treatment process for spring processing and production, and belongs to the technical field of metal material heat treatment, the heat treatment process for spring processing and production comprises the following steps: detecting element content through laser-induced breakdown spectroscopy, and dynamically adapting parameters such as quenching temperature by using a reinforcement learning algorithm; calculating the critical concentration of titanium carbide based on JMatPro, monitoring the component gradient of a cladding layer in real time, and adjusting the laser power, the powder feeding rate and the cladding path; acquiring temperature field and stress field data by using a sensor, and adjusting the magnetic field intensity, the pre-deformation amount and the flow velocity of a cooling medium; a metallographic image is analyzed through a convolutional neural network, subzero treatment is intelligently triggered, and tempering parameters are optimized; and according to the surface roughness, parameters are reversely corrected, and self-optimization is carried out through the block chain. Intelligent and accurate regulation and control of the whole process of component detection, process control and quality detection are achieved, the mechanical property and production efficiency of the spring are improved, and the method has the advantages of dynamic adaptation, real-time monitoring, multi-field coupling control, data closed-loop optimization and the like.

The invention belongs to the field of high-thermal-conductivity composite materials, and particularly relates to a 3D printing copper-diamond composite high-thermal-conductivity material and a preparation method thereof.The 3D printing copper-diamond composite high-thermal-conductivity material comprises a copper matrix and diamond particles dispersed in the copper matrix, and the surfaces of the diamond particles are provided with metal coatings; the copper matrix is formed by copper powder with the particle size of 10-100 microns, and the volume fraction of the diamond particles in the composite material is 40%-50%; according to the method, the titanium plating layer is prepared on the surface of the diamond, the stable titanium carbide transition layer is formed through the reaction of titanium and carbon, the interface thermal resistance between the diamond and copper is remarkably reduced, the interface bonding strength is improved, and heat conduction is facilitated. The selected area green laser 3D printing technology is adopted, a green laser device shows remarkable advantages in the field of 3D printing of copper alloy, and the heat conductivity of the prepared composite material can reach and is remarkably higher than that of pure copper by optimizing the diamond volume fraction and 3D printing process parameters.

The application discloses a kind of hard alloy cutter materials for deep hole machining, the cutter material is composed of the following weight percentage components: tungsten carbide: 75%~85%, wherein 0.2~0.4 μm superfine tungsten carbide particles account for 60%~80%, 0.4~0.8 μm tungsten carbide particles account for 20%~40%; Cobalt: 10%~15% titanium carbide: 2%~5%; Tantalum carbide: 1%~3%; Niobium carbide: 0.5%~2%; Vanadium carbide: 0.3%~1.0%; Chromium carbide: 0.2%~0.8%; Rare earth element: Y2O3 Or La2O3: 0.1%~0.5%. The application breaks through the bottleneck of high temperature wear, insufficient strength and short service life of traditional hard alloy in deep hole machining through three-dimensional innovation of component design, structure control and surface strengthening, and provides an efficient solution for precision deep hole machining of high hardness materials.

Various examples are provided related to ultrathin polymer-derived ultra-high temperature ceramic (UHTC). In one example, a ceramic coating includes a polymer-derived ceramic (PDC); an UHTC; and a ceramic adhesive comprising alumina (Al2O3). For example, the PDC can include silicon carbide and the UHTC can include a titanium carbide. A thickness of the ceramic coating can be less than 1 mm. In another example, a method includes providing the ceramic coating and applying the ceramic coating to a surface of a structure. For example, the structure can be an aircraft, a ship, a missile, or a rocket.

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 invention discloses a cerium dioxide doped nickel phosphide cobalt loaded titanium carbide Mxene composite electrocatalytic material and a preparation method thereof, and belongs to the technical field of electrocatalytic materials. According to the invention, single / few-layer Ti < 3 > C < 2 > T < x > MXene is successfully synthesized by adopting LiF + HCl as an etching agent through a simple in-situ generation method, and a terminal functional group on the surface of the Ti < 3 > C < 2 > T < x > MXene can attract metal active components; niCoP nano-particles are prepared through a hydrothermal method and a thermal phosphating process and are loaded on a few layers of Ti < 3 > C < 2 > T < x > M < Xene > material, CeO2 NPs are attached to NiCoP and Ti < 3 > C < 2 > T < x > M < Xene > sheet layers, and the difunctional CeO2-NiCoP / Ti < 3 > C < 2 > T < x > M < Xene > composite electro-catalytic material is obtained. The preparation method is simple and efficient; the prepared composite electro-catalytic material can show excellent HER and OER catalytic activity and stability.

The invention relates to the technical field of nano repair materials, in particular to a ship remanufacturing nano repair material and a preparation method and application thereof, and the nano repair material comprises the following raw materials in parts by weight: 30-35 parts of nano tungsten carbide, 25-30 parts of nano titanium carbide, 25-30 parts of nano silicon carbide, 10-15 parts of modified boron nitride powder and 6-9 parts of a carbon nanotube doping-based additive. According to the nano repairing material, nano tungsten carbide, nano titanium carbide and nano silicon carbide are blended to serve as a base body, meanwhile, the added modified boron nitride powder and the added carbon nano tube doped increasing agent are mutually blended, matched, optimized and improved, and the obtained nano repairing material product has excellent wear resistance, impact resistance and pollution resistance; the performance of the product can be harmoniously improved, and the heat-resistant, corrosion-resistant and stable effects of the product are remarkable.

The invention provides a lithium manganese iron phosphate / titanium carbide heterojunction positive electrode material, a preparation method thereof, a positive plate and a lithium ion battery. The chemical structural formula of the lithium manganese iron phosphate / titanium carbide heterojunction positive electrode material is LiMn1-xFexPO4 / Ti3C2, wherein x is more than or equal to 0.1 and less than or equal to 0.9. In the lithium manganese iron phosphate / titanium carbide heterojunction positive electrode material, a part of titanium ions occupy an M site in lithium manganese iron phosphate to form a metal-hole pair, so that the Jahn-Teller effect can be reduced, the dissolution of manganese ions caused by lattice distortion in the circulation process can be reduced, and the service life of the lithium manganese iron phosphate / titanium carbide heterojunction positive electrode material is prolonged. Further, the structural stability and the cycle performance of the lithium manganese iron phosphate / titanium carbide heterojunction positive electrode material can be improved. Besides, reversible high capacity is realized by constructing a heterostructure and titanium carbide absorbing and utilizing lattice oxygen, and a stable positive electrode / electrolyte interface is obtained, so that a positive electrode system is favorably stabilized, and stable output of electrochemical performance is favorably promoted.

The invention discloses an in-situ composite titanium carbide reinforced titanium-based alloy and a preparation method thereof. The in-situ composite titanium carbide reinforced titanium-based alloy comprises the following chemical components in percentage by mass: 0 < = N < = 0.010%, 0 < = H < = 0.015%, 0 < = O < = 0.2%, 0.10-0.40% of C and the balance of Ti and inevitable impurities. The preparation method comprises the following steps: mixing the titanium powder and the graphite powder, and carrying out metal laser powder bed fusion printing. According to the invention, through in-situ synthesis of nano TiC particles, the size and morphology of the TiC particles are regulated and controlled, so that the mechanical property of the titanium-based alloy is greatly improved. The titanium-based alloy with high strength and excellent elongation is obtained by using a trace interstitial element C, and is independent of solid solution strengthening, second-phase dispersion strengthening or work hardening ways of expensive rare metals such as V, Mo, Nb and the like, so that green and low-cost preparation of the titanium alloy is facilitated.

The invention provides a preparation method and application of a fabric-based composite photocatalytic material, and belongs to the technical field of functional textiles. The preparation method comprises the following steps: mixing titanium carbide with bismuth vanadate and stannic oxide, carrying out ultrasonic treatment, sequentially adding waterborne polyurethane and a cotton fabric, reacting, and drying to obtain the fabric-based composite photocatalytic material. The bismuth vanadate / tin dioxide / titanium carbide (MXene) composite material prepared by a water bath method is prepared by taking waterborne polyurethane as a cross-linking agent and loading a catalyst onto a cotton fabric through multiple times of water bath oscillation, and has excellent photocatalytic performance and recoverability. The fabric-based composite photocatalytic material provided by the invention solves the key problems of insufficient catalytic efficiency, difficult recovery and the like of a bismuth vanadate single-phase material and a binary composite material.

The invention relates to a high-wear-resistance floor coating based on TiC hybrid resin and a preparation process of the high-wear-resistance floor coating, and belongs to the technical field of floor coatings. The high-wear-resistance floor coating is prepared from a component A and a component B in parts by weight, wherein the component A is prepared from 90 to 100 parts of modified waterborne epoxy resin emulsion; the component B comprises the following components in parts by weight: 20-30 parts of modified fibrous wollastonite, 0.5-1.5 parts of a flatting agent, 0.5-1 part of a defoaming agent, 1-2 parts of a wetting dispersant, 30-45 parts of a water-based amine curing agent and 20-40 parts of water; the weight ratio of the component A to the component B is 1: (0.75-0.85); titanium carbide subjected to amination and surface grafting polycaprolactone treatment is added into the coating, so that the wear resistance of the floor coating can be improved.

The application relates to a sodium ion battery negative electrode material and a preparation method and application thereof, and belongs to the technical field of sodium ion batteries. The sodium ion battery negative electrode material comprises sodium titanate and a composite coating layer coated on the surface of the sodium titanate, and the composite coating layer comprises titanium carbide and carbon; the mass ratio of the sodium titanate, the titanium carbide and the carbon is (70-90):(5-15):(2-10). Through the compounding of the sodium titanate and the composite coating layer (titanium carbide and carbon), the conductivity is significantly improved, the 10C capacity retention rate is increased from 30% to 70%, and the coulomb efficiency is increased from 65% to 95%.

The invention relates to the technical field of functional materials, in particular to a tungsten hard alloy and a preparation method and application thereof. According to the invention, yttrium oxide and cerium oxide with specific contents are compounded for use, so that the hardness of the tungsten hard alloy is further improved. Moreover, through graphene oxide, on one hand, the hardness of the tungsten hard alloy is improved, on the other hand, the integrality and the machining performance of all the components are enhanced, and it is guaranteed that yttrium oxide is effectively combined with cerium oxide, tungsten carbide and titanium carbide. By introducing the iron powder and the cobalt powder, on one hand, the bonding effect is achieved, and on the other hand, the synergistic effect of yttrium oxide, cerium oxide and graphene oxide is promoted, so that the tungsten hard alloy with higher hardness is formed on the premise that the overall performance of the tungsten-titanium-cobalt hard alloy is guaranteed. The tungsten hard alloy provided by the invention can meet the performance requirements in the field of cutting or precision parts, can be processed into cutting tools or precision parts, and has a wide application prospect.

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.

The invention provides a method for connecting titanium aluminum carbide and niobium and a connector, and relates to the technical field of welding, the method comprises the following steps: splicing a titanium aluminum carbide base material and a niobium base material together to obtain a to-be-connected assembly; under the preset air pressure, the to-be-connected assembly is heated to the preset temperature at the preset heating rate for spark plasma sintering, the to-be-connected assembly is cooled to the room temperature at the preset cooling rate, and a connector is obtained; wherein the preset heating rate is 50 DEG C / min or above, the preset temperature ranges from 1200 DEG C to 1500 DEG C, and the preset cooling rate is 50 DEG C / min or above. By the adoption of the method, cracking of the connector can be restrained, generation of brittle intermetallic compounds (Nb-Al) can be avoided, the interface bonding strength can be improved, and therefore the strength of the connector is improved.

The invention discloses high-strength wear-resistant wind power ductile iron and a processing technology thereof, and belongs to the technical field of casting. The processing technology of the high-strength wear-resistant wind power ductile iron comprises the following steps: A1, sequentially adding waste steel, a carburant, pig iron, foundry returns and ferroniobium into an intermediate frequency furnace, standing after all furnace charges are molten, and removing slag; a2, a spheroidizing agent, a nucleating agent, metal antimony, titanium carbide and a covering agent are sequentially added to the bottom of a steel ladle, and then molten iron in the step A1 is poured into the steel ladle for spheroidizing and inoculation; a3, the molten iron obtained after spheroidizing and inoculation is subjected to slagging-off and then poured into a casting mold, and a stream inoculant is added in the pouring process; a4, after pouring is finished, slowly cooling in the sand mold to below 400 DEG C, and removing a casting from the casting mold; and A5, the casting is subjected to pulse current quenching treatment and then subjected to pulse current normalizing treatment, and the high-strength wear-resistant wind power ductile iron is obtained. The prepared high-strength wear-resistant wind power ductile iron is high in strength and good in wear resistance, and the low-temperature impact performance meets the requirement of QT500-14AL.

The invention relates to the technical field of coatings, and discloses a waterproof composite coating for a non-stick pan and a preparation method of the waterproof composite coating, the composite coating sequentially comprises a transition bonding layer, a waterproof blocking layer and a surface non-stick layer from inside to outside, and each layer is prepared from raw materials in a specific proportion. The transition bonding layer takes titanium carbide, potassium feldspar and the like as main raw materials, the waterproof blocking layer comprises bisphenol A epoxy resin, modified tea polyphenol and the like, and the surface non-stick layer takes polytetrafluoroethylene as a core. The preparation method sequentially comprises the steps of substrate pretreatment, transition bonding layer preparation, waterproof barrier layer preparation and surface non-sticky layer preparation, and the process is simple and controllable. The composite coating has excellent waterproof performance, firm binding force with a base body and good non-stick performance, the service life of the non-stick pan can be effectively prolonged, health risks caused by coating damage are reduced, and the composite coating is suitable for large-scale production.