223 results about "Si element" patented technology

The invention relates to a 5xxx series aluminum alloy additive part and a preparation method thereof, relates to the technical field of additive materials, and aims to solve the problem of urgent development of a process capable of effectively improving the strength of the 5xxx series aluminum alloy additive part without any subsequent treatment. According to the main technical scheme, the preparation method of the 5xxx-series aluminum alloy additive part comprises the following steps that 5xxx-series aluminum-magnesium-based aluminum alloy powder and CNT are subjected to powder mixing treatment, and composite powder is obtained; wherein in the 5xxx series aluminum-magnesium-based aluminum alloy powder, the mass fraction of the Mg element is larger than 4% and not larger than 12%, the mass fraction of the Si element is smaller than 0.4%, and the mass fraction of the Cu element is smaller than 0.2%; in the composite powder, the mass fraction of the CNT is greater than 0.5% and not higher than 5%; the composite powder is formed into a blank, and the blank is made into a bar; and the bar is subjected to friction extrusion deposition treatment, and the 5xxx series aluminum alloy additive part is obtained. The method is used for preparing the 5xxx series aluminum alloy additive part with excellent tensile strength and yield strength, and subsequent heat treatment is avoided.

The invention relates to a preparation method of a seawater wear and corrosion resistant high-entropy alloy coating, and belongs to the technical field of coating preparation and treatment. The preparation method comprises the steps that matching calculation is conducted according to the chemical formula FeCrCoMnSix of the high-entropy alloy, Fe, Cr, Co, Si and Mn-Fe alloy powder are weighed, and x is equal to 0.1-1; the weighed powder is mixed and then subjected to ball milling, and a mixture is obtained; mixing the mixture with an adhesive, coating the mixture on a substrate to form a plurality of prefabricated layers, distributing the prefabricated layers on the substrate in parallel, and then drying the coated substrate; under the protection atmosphere of inert gas, the dried base body coated with the prefabricated layer is subjected to multi-channel laser cladding; and then annealing treatment is conducted, and the high-entropy alloy coating is obtained. According to the method, the seawater corrosion resistance and wear resistance of the high-entropy alloy coating are improved by adjusting the content of the Si element, utilizing the laser cladding technology and further performing annealing treatment.

The invention relates to the field of additive manufacturing nano precipitated phase reinforced refractory high-entropy alloys, in particular to an additive manufacturing nano precipitated phase reinforced refractory TiNbVAlSix high-entropy alloy. The high-entropy alloy comprises the following chemical components by atomic percent: 45-55% of Ti; 15%-25% of Nb; v, 15%-25%; 8%-15% of Al; and 0-9% of Si. The alloy is prepared through a laser directional energy deposition additive manufacturing method, precipitation of a nano Ti5Si3 phase at the grain boundary and in grains is promoted through addition of the Si element, microstructure characteristics of a disordered BCC phase, an ordered B2 phase and the nano Ti5Si3 phase are formed, and the content of the nano Ti5Si3 phase is in direct proportion to the content of the Si element. The high-entropy alloy has the performance characteristics of light weight and high strength, can meet the requirements of part of aerospace parts, and has important value for development and application of TiNbVAl and related light refractory high-entropy alloy systems.

A phosphor plate includes a plate-like composite including a base material and a phosphor contained in the base material, in which the base material contains spinel, the phosphor includes a phosphor containing a Si element, and in an X-ray diffraction pattern of the phosphor plate using a Cu-Kα ray, in a case in which peak intensity corresponding to the spinel having a diffraction angle 2θ in a range of 36.0° or more and 37.4° or less is set to 1, total intensity of peaks having a diffraction angle 2θ in a range of 32.5° or more and 34.5° or less satisfies 0.5 or less.

An object of the present invention is to provide a novel technology capable of achieving high-quality SiC seed crystal, SiC ingot, SiC wafer and SiC wafer with an epitaxial film. The present invention, which solves the above object, is a method for producing a SiC seed crystal for growth of a SiC ingot, the method including a heat treatment step of heat-treating a SiC single crystal in an atmosphere containing Si element and C element. As described above, by heat-treating the SiC single crystal in an atmosphere containing the Si element and the C element, it is possible to produce a high-quality SiC seed crystal in which strain and crystal defects are suppressed.

The invention provides an aluminum alloy wire and a preparation method thereof. The aluminum alloy wire comprises the following elements in percentage by mass: 0.1 to 7.0 percent of Zn element, 0.2 to 9.6 percent of Mg element, 0.1 to 6.0 percent of Cu element, 0.01 to 1.2 percent of Mn element, 0.1 to 2.0 percent of Fe element, 0.1 to 2.5 percent of Si element, less than or equal to 0.15 percent of inevitable impurities and the balance of Al element, the surface brightness L of the aluminum alloy wire is greater than 60, and the surface brightness color difference E is less than or equal to 0.5; the average roughness Sa is less than or equal to 0.4 mu m, and the maximum peak height Sp is less than or equal to 2.0 mu m; the aluminum alloy wire does not crack after 85% compression deformation; under the test conditions that the temperature is 35 DEG C, and the aluminum alloy wire is placed in a mixed solution of a 57g / L NaCl solution and a 10mL / L H2O2 solution to be soaked for 6 hours, the corrosion depth of the aluminum alloy wire is smaller than or equal to 10 micrometers.

The invention discloses a high-entropy alloy wear-resistant coating with a silicon-containing transition layer for improving the wettability of a copper surface and a laser cladding method, and relates to the technical field of alloy coatings. The method comprises the following steps: providing silicon-containing transition layer alloy powder and CoCrFeNiTi series high-entropy alloy powder; providing a copper base material, and cleaning the surface to be cladded of the copper base material; cladding silicon-containing transition layer alloy powder on the surface of the copper base material by adopting a laser cladding process under a protective atmosphere to form a silicon-containing transition layer; and under the protective atmosphere, CoCrFeNiTi series high-entropy alloy powder is cladded on the surface of the silicon-containing transition layer through a laser cladding process, and the high-entropy alloy wear-resistant coating is formed. According to the high-entropy alloy coating disclosed by the invention, the Si element in the transition layer can be subjected to interface reaction with a copper substrate to form a Cu-Si solid solution phase with low interface energy, so that the interface tension between copper and a subsequent cladding coating is remarkably reduced, and the wettability between the copper substrate and a coating material is fundamentally improved; the high-entropy alloy coating is successfully cladded on the copper surface with poor wettability.

The invention provides an aluminum alloy and a preparation method thereof, and the aluminum alloy comprises the following elements in percentage by mass: 0.30-0.50 wt.% of Si, 0.30-0.50 wt.% of Fe, 0.30-0.50 wt.% of Cu, 0.30-0.50 wt.% of Mn, 0.30-0.50 wt.% of Mg, 0.30-0.50 wt.% of Zn, 0.30 0.45 wt.% to 0.65 wt.% of Fe; 0.40 wt.% to 0.80 wt.% of Cu; mn: 1.25 wt.% to 1.35 wt.%; less than or equal to 0.05 wt% of Mg and less than or equal to 0.10 wt% of %, 0.02 wt.% to 0.05 wt.% of Ti; other single impurities: less than or equal to 0.05 wt.%; the total of other impurities is less than or equal to 0.15 wt.%; and Al: the balance. According to the aluminum alloy and the preparation method thereof, the content of high-strength elements in the aluminum alloy is increased, the content of Mn elements and the content of Fe elements are increased, meanwhile, the Si element is added and matched with the Fe element, the strength and hardness of the aluminum alloy can be effectively improved, and especially the remarkable effect is achieved after cold machining such as rolling; and meanwhile, it is guaranteed that the aluminum alloy has good ductility, the tensile strength of the aluminum alloy is larger than 150 MPa, the ductility of the aluminum alloy is lower than 17%, and the aluminum alloy has good mechanical performance.

This invention provides a copper alloy and its preparation method. The copper alloy has the following mass percentage composition: Ni: 0.5–2.0 wt%, S: 0.3–0.8 wt%, P: 0.1–0.3 wt%, Sn: 0.1–0.2 wt%, Si: 0.05–0.2 wt%, with the balance being Cu and unavoidable impurities. The microstructure of the copper alloy contains Cu₂S particles. This invention designs the composition and microstructure of the copper alloy, particularly controlling the content range of Ni, P, and Si elements to give the material high strength and high conductivity. Furthermore, the addition of S element forms Cu₂S particles, thereby improving the material's machinability and facilitating its fabrication into connector components.

The invention provides a 5G50 aluminum alloy plate strip for anodic oxidation and a preparation method of the 5G50 aluminum alloy plate strip. The 5G50 aluminum alloy plate strip for anodic oxidation comprises the following elements in percentage by mass: 0.01%-0.10% of Si element, 0.04%-0.15% of Fe element, 3.0%-4.0% of Mg element, 0.2%-1.2% of Mn element, less than or equal to 0.02% of inevitable impurity element in total content, less than 0.05 wt% of single impurity element and the balance of Al. Wherein after the aluminum alloy plate strip is subjected to anodic oxidation treatment, the surface of the aluminum material has no heterochromatic stripe defect, and the chromatic aberration E is less than 0.15. The 5G50 aluminum alloy plate strip for anodic oxidation can give consideration to both high surface quality and excellent mechanical performance, is widely applied to 3C consumer electronics, and can achieve the practical effects of falling resistance, light weight and attractive appearance of the product.

The invention discloses a preparation method of a high-strength and high-conductivity aluminum alloy profile, which comprises the following steps: 1) carrying out solution treatment on an aluminum alloy raw material to obtain a supersaturated solid solution; (2) the supersaturated solid solution is subjected to low-temperature extrusion treatment, and the aluminum alloy profile is obtained; and thirdly, the aluminum alloy profile is heated, and the high-strength and high-conductivity aluminum alloy profile is obtained. According to the method, hot extrusion is replaced by low-temperature extrusion, so that the aluminum alloy profile generates a remarkable cold hardening effect, the strength of the alloy is greatly improved, meanwhile, severe plastic deformation at the extrusion temperature generates a large number of intragranular dislocations, Mg and Si elements are promoted to be quickly and fully dispersed and separated out, the alloy generates a precipitation strengthening effect, and the conductivity is improved.

The invention provides welding wire steel for welding ultralow-temperature high manganese steel, a welding wire, a preparation method of the welding wire and a welding method. The welding wire steel for welding the ultralow-temperature high manganese steel comprises the following components in percentage by mass: 0.05 to 0.1 percent of C; 0.5 to 0.6 percent of Si; 24% to 25% of Mn; p is less than or equal to 0.01%; s is less than or equal to 0.01%; 0.05% to 0.1% of Al; 0.12 to 0.2 percent of Ni; 0.02% to 0.06% of N; 0.08% to 0.15% of Ti; v, 0.08% to 0.15%; 0.08% to 0.15% of Nb; 0.05% to 0.1% of Mo; and the balance of Fe and inevitable impurities. The welding wire composition design is optimized, only a small amount of Ni element is added, W and other high-melting-point elements are not added, and a small amount of C, N, Ti, V, Nb and other alloy elements are transited to a welding seam through the welding wire, so that nitride, carbide and other pinning grain boundaries are formed in the welding seam at the high temperature, austenite grain growth is effectively prevented, the austenite grain size is reduced, and the low-temperature impact toughness of the welding seam is improved; in addition, a small amount of Si element is transited to the welding seam through the welding wire, molten pool fluidity is improved, slag floating is promoted, and slag inclusion of the welding seam is avoided.

The invention discloses hard alloy welding powder for valve sealing surface surfacing and a preparation method of the hard alloy welding powder. The welding powder comprises 1.20%-1.40% of C element, 2.70%-3.5% of Si element, 3.00%-4.50% of Mn element, 24.00%-26.00% of Cr element, 2.00%-2.20% of Mo element, 3.50%-4.50% of Ni element, smaller than or equal to 0.20% of Co element, smaller than or equal to 0.02% of B element, smaller than or equal to 0.10% of N element and the balance Fe element. The preparation method comprises the following steps: weighing raw materials, mixing and smelting the raw materials to obtain alloy liquid; and the alloy liquid is subjected to gas atomization to prepare powder, and the hard alloy welding powder is obtained after screening. The Co element content is strictly limited, and meanwhile the hardness and other performance can meet the design requirement; the preparation method is simple and reliable in process.

The invention relates to a TiC-SiC reinforced 304 stainless steel composite coating based on high-speed laser cladding and a preparation method of the TiC-SiC reinforced 304 stainless steel composite coating. The composite coating with 304 stainless steel as a metal matrix phase and TiC and SiC as ceramic reinforced phases is prepared on the surface of a steel matrix by adopting a high-speed laser cladding technology. In the cladding process, the TiC ceramic particles keep stable in structure, the SiC ceramic particles are subjected to controllable partial decomposition, the Si element released through decomposition forms a Si enrichment area on the interface of the ceramic particles and the metal matrix, and the C element released through decomposition reacts with the metal matrix to generate a carbide phase. Therefore, the composite coating which is compact in structure and good in interface bonding is obtained and is suitable for surface protection of steel components serving under the working condition of coupling abrasion and corrosion.

The invention relates to the technical field of alloys, and discloses a high-strength and high-toughness die-cast Al-Mg-Si alloy and a preparation method thereof, and the Al-Mg-Si alloy comprises the following components by weight percent: 5.5-8.5% of Mg, 0.5-1.5% of Mg, 0.5-1.5% of Si, 0.5-1.5% of Al, 0.5-1.5% 2.8 to 4.0% of Si; 0.5 to 0.8 percent of Mn; be: 0.004% to 0.006%; 0.001 to 0.01 percent of Na (sodium); 0.01%-0.2% of a rare earth metal element; the rare earth metal element is at least one of La single rare earth or Ce single rare earth; 0.02 to 0.1 percent of V; the Mg element and the Si element also need to meet the following requirements in percentage by mass: Mg / Si is more than 1.73 and less than 2.5; the total amount of the other impurities is less than or equal to 0.2%; and the balance of Al. The alloy has the characteristics of high strength and high toughness under the condition of a die-casting state, and has important application value.

The application relates to the technical field of zinc-aluminum coating detection, in particular to a method for rapidly detecting the contents of Zn, Al and Si elements in a zinc-aluminum coating; the method comprises the following steps: ultrasonic cleaning of the zinc-aluminum coating to be detected to obtain a pretreated sample; glow surface analysis of the pretreated sample by using a glow spectrum method, drawing of a horizontal and vertical coordinate graph, and obtaining of an Fe-h curve graph, a Zn-h curve graph, an Al-h curve graph and a Si-h curve graph; according to the curve graphs, the total mass of Zn, Al and Si is respectively calculated; the thickness of the zinc-aluminum coating to be detected is calculated by taking the Fe-h curve graph as a standard curve; according to the curve graphs and the thickness of the zinc-aluminum coating to be detected, the average mass of Zn, Al and Si is respectively obtained; and according to the average mass and the total mass, the average mass fraction of Zn, Al and Si is obtained. The method can avoid the substrate effect of the zinc-aluminum coating in the detection process, so that the accuracy of the zinc-aluminum coating detection is improved.

A method for modifying a high-strength titanium-based amorphous composite material with Si element comprises the following steps: 1. selecting raw materials; 2. surface treating the raw materials; 3. batching the raw materials; placing the treated bulk raw materials together in a vacuum arc melting furnace; 4. melting the initial alloy ingot; 5. melting the target alloy ingot; 6. spray casting; cutting, polishing, and cleaning the alloy ingot obtained in step 5 to obtain an alloy material to be placed in a quartz glass tube with a small hole at the bottom; evacuating the spray casting furnace chamber and then filling it with high-purity argon gas; and heating the alloy material in the quartz glass tube by energizing the induction coil of the spray casting furnace to obtain (Ti 48 Zr 20 Nb 12 Cu5Be 15 ) 99.9～99.7 Si 0.1～0.3 The amorphous composite material is in a rod shape. The present invention obtains uniform structure, high strength and good plasticity by introducing an appropriate amount of silicon element and controlling its process parameters, thereby solving the problem of unsatisfactory plasticity of amorphous composite materials at room temperature in the prior art.

The invention discloses a processing technology of a lightweight high-hardness high-strength aluminum profile, and relates to the technical field of aluminum alloy processing. According to the method, the 7050 aluminum alloy profile is smelted, the extra Si element is added in the smelting process, the content of the Si element in the 7050 aluminum alloy sheet is increased, the metastable Al-Si phase in the alloy is increased, meanwhile, nano TiC is added, the prepared aluminum alloy profile is effectively refined, then multi-stage artificial aging treatment is adopted, more energy is provided for nucleation of a precipitated phase in the aluminum alloy, and the aluminum alloy can be effectively refined. And finally, the recast 7050 aluminum alloy profile is subjected to anodic oxidation surface treatment, a hard compact oxidation film is formed on the surface of the aluminum alloy profile, the porosity of the surface of the aluminum profile is reduced, the hardness of the aluminum profile is enhanced, and the service life of the aluminum profile is prolonged. The aluminum profile prepared through the method is high in strength and hardness, and cracks are effectively reduced in the automobile lightweight application process.

The invention provides a heat treatment-free ZL101A aluminum alloy and a preparation method thereof. The heat-treatment-free ZL101A aluminum alloy is prepared from the following components in percentage by mass: 6.5 to 7.5 percent of Si element, 0.2 to 0.4 percent of Mg element, 0.05 to 0.9 percent of Sc element, 0.05 to 0.9 percent of Er element, 0.1 to 0.2 percent of Ti element, less than or equal to 0.1 percent of Mn element, less than or equal to 0.2 percent of Fe element, less than or equal to 0.2 percent of Cu element and the balance of Al element, wherein reinforcing particles are further added into the heat treatment-free ZL101A aluminum alloy, and the mass ratio of the reinforcing particles in the heat treatment-free ZL101A aluminum alloy is 0.1%-3%. According to the heat-treatment-free ZL101A aluminum alloy, the mechanical property of the heat-treatment-free ZL101A aluminum alloy is improved, and the strength and toughness of the heat-treatment-free ZL101A aluminum alloy in a cast state are improved.

A main object of the present disclosure is to provide an electrode layer of which volume change amount is suppressed. The present disclosure achieves the object by providing an electrode layer including a composite particle, wherein the composite particle includes: a plurality of active material containing a Si element or a Sn element; and a binder; and when R designates an average particle size of the composite particle in a thickness direction of the electrode layer, and d designates a thickness of the electrode layer, a rate of the R with respect to the d, which is R / d, is 0.20 or less.

The composite active material includes an electrode active material including an Si element and having a void therein, and a coating layer covering the surface of the electrode active material and including a solid electrolyte. A composite active material is provided in which BET specific surface area of the composite active material is less than or equal to 40 m2 / g, and the coverage by the coating layers is 20% or more.

The application relates to a feed for metal injection molding, a preparation method of the feed and a metal product, wherein the preparation method of the feed comprises the following steps: S1, obtaining the following components according to weight parts: 40-50 parts of Fe elements, 2-8 parts of Ni elements, 20-25 parts of Cr elements, 20-25 parts of Co elements, 2-8 parts of Mo elements, 2-8 parts of Cu elements, 0.1-3 parts of Si elements, 1-3 parts of Mn elements, mixing and then heating to melt the material, and then adopting a high-pressure water-gas combined atomization method to obtain mixed powder; S2, obtaining a forming agent; S3, preheating the mixed powder obtained in S1 under vacuum conditions, then adding the forming agent into the mixed powder for mixing, and then performing plasticizing extrusion granulation to prepare the feed. The feed can meet the size precision requirements of MIM injection, green compact degreasing sintering and related post-process machining, the existing MIM materials on the market cannot simultaneously meet the problem of high polishable hardness, and the obtained metal product has the comprehensive advantages of appearance and hardness.

Provided is a method for manufacturing a powder magnetic core capable of improving insulating properties. This method for manufacturing a powder magnetic core comprises: a first step (step S10) in which a metal magnetic material powder comprising a plurality of metal magnetic material particles, a resin, and a metal soap are mixed to obtain a granulated powder; a second step (step S20) in which the obtained granulated powder is press-molded to obtain a molded body; and a third step (step S40) in which the obtained molded body is annealed. In the first step, the mixed metal soap is in a liquid state at 25 DEG C and contains Si element.

The invention belongs to the technical field of composite aluminum alloy, and discloses an aluminum alloy composite board and a corrosion-resistant aluminum alloy composite board. The aluminum alloy composite board is of a double-layer structure which comprises a core layer and a corrosion-resistant layer; the core layer comprises a Si element, a Fe element, a Cu element, a Mn element and a Mg element, and the anti-corrosion layer comprises a Zn element, the Si element and the Fe element; the corrosion-resistant aluminum alloy composite board is obtained by carrying out zinc impregnation treatment on the aluminum alloy composite board. And after zinc impregnation treatment, the difference value between the potential of a Zn-element-free diffusion area of the anti-corrosion layer and the potential of the innermost layer of the core layer is smaller than or equal to 150 mV. The corrosion-resistant aluminum alloy composite board shows excellent layered corrosion in a corrosion environment.

A composite active material has an electrode active material and a coating layer. The electrode active material includes an Si element. The coating layer coats a surface of the electrode active material. The coating layer contains a hydride solid electrolyte.

The invention provides a 7xxx series aluminum alloy plate strip for anodic oxidation with a high recovery ratio and a preparation method of the 7xxx series aluminum alloy plate strip. The 7xxx series aluminum alloy plate strip comprises the following elements of 0.06%-0.12% of Si element, 0.10%-0.25% of Fe element, 4.5%-5.5% of Zn element, 2.0%-3.0% of Mg element, 1.2%-2.0% of Cu element, 0.05%-0.15% of Mn element, 0.10%-0.15% of Er element, 0.10%-0.12% of Zr element, 0%-0.03% of Ti element and the balance aluminum element. The aluminum alloy plate strip is prepared through the steps of reclaimed material grading pretreatment, low-liquid-level semi-continuous casting, multi-stage homogenizing heat treatment, hot rolling, cold rolling, solid solution, pre-stretching, two-stage aging and the like. Through joint optimization of material components and the process, the finished plate strip has excellent mechanical performance, an oxidation film is uniform in color and luster, and salt mist resistance, friction resistance and the like are achieved.

The invention discloses an additive manufacturing method of a high-temperature-resistant titanium-based composite material with good room-temperature strong plasticity matching, relates to the field of metal-based composite materials, and aims to solve the problem that the high temperature resistance and near-net forming cannot be considered at the same time when an existing titanium-based composite material, especially titanium alloy TA15, TiB2 and Si powder is used as a reinforced phase additive for manufacturing the titanium-based composite material. The method comprises the steps that TA15 titanium alloy powder serves as a base body, TiB2 and Si powder serves as a reinforcing phase, a titanium-based composite material is prepared through the selective laser melting technology, then annealing heat treatment is conducted, and the additive manufacturing method is completed. According to the method, the problems that the titanium-based composite material prepared through selective laser melting is poor in room-temperature plasticity and insufficient in heat resistance are remarkably improved, the microstructure of the material is improved through annealing heat treatment, residual stress is released, silicide is separated out through introduction of the Si element, the high-temperature strength of the material is improved, the room-temperature plasticity of the material is remarkably improved, and the heat-resistant temperature of the material is remarkably improved.

The invention discloses an aluminum alloy for simulating a neutron irradiation transmutation silicon effect and a manufacturing method thereof, and belongs to the field of aluminum alloys. The manufacturing method of the aluminum alloy for simulating the neutron irradiation transmutation silicon effect comprises the following steps: determining the Si element content in the alloy according to the state of the aluminum alloy to be simulated, and preparing a supersaturated solid solution raw material with corresponding components, an aluminum alloy bar is prepared through a powder metallurgy process, and an aluminum alloy structure for simulating the generation of the transmutation silicon effect is obtained through heat treatment. According to the aluminum alloy preparation method, the simulated alloy can be prepared to effectively simulate a precipitated phase structure formed by transmutation reaction after the aluminum alloy is irradiated by neutrons for a long time, and the aluminum alloy preparation method plays an important role in researching the influence of irradiation transmutation products on the performance of the aluminum alloy; the current situation that irradiation performance evaluation of a metal material with a solid transmutation product is extremely dependent on neutron irradiation resources is relieved, the research efficiency is improved, and therefore the design level and the safety performance of an aluminum alloy structural part in a research reactor are improved.

The application relates to an agate color coated workpiece and a preparation method thereof. The preparation method comprises the following steps: S1, depositing a transition layer on a base material by adopting a magnetron sputtering mode; S2, depositing a TiAlN intermediate layer on the transition layer in S1 by adopting the magnetron sputtering mode; and S3, depositing a TiAlSiN agate color coating layer on the TiAlN intermediate layer in S2 by adopting the magnetron sputtering mode. In step S3, the sputtering power of the Si target is controlled, so that the percentage of Si elements in the deposited TiAlSiN layer is 7%-8%. The application obtains a special agate color coated workpiece, and the workpiece has high hardness and wear resistance, and has a wider application prospect.

The invention relates to the technical field of inorganic material preparation, in particular to a ZIFs material for long-acting capture of CO2, a preparation method and application of the ZIFs material in carbon neutralization. The ZIFs material is obtained by carrying out surface coating on ZIFs-8 particles, the ZIFs material contains an Si element; the D90 particle size value is selected from 350-800nm, and the specific surface area is selected from 300-600m < 2 > / g. According to the invention, self-assembly coating is carried out on the surface of the ZIF-8 material, so that the ZIFs-based material which has good adsorption performance on CO2 and has good hydrophobicity and weather resistance is prepared.