553 results about "Thermal spray coating" patented technology

The invention discloses a thermal spraying coating thickness online optimization control method based on digital twinning, and relates to the technical field of intelligent manufacturing, and the method comprises the steps: synchronously collecting multi-modal online observation data and process control observation data in a thermal spraying process, carrying out the time-space alignment, and generating a multi-modal observation set; performing adaptive optimization of multi-modal uncertainty gating on the candidate control set according to the credible thickness field confidence distribution map to generate a control instruction sequence; and the control instruction sequence acts on the thermal spraying process, response feedback data are continuously collected in the execution period, a new multi-mode observation set is generated according to the response feedback data, and real-time closed-loop optimization control is kept. According to the method, the thickness field with high credibility and the credible thickness field confidence distribution diagram can be generated through forward generation and uncertainty quantification of physical guidance, and depth coupling of multi-modal data and physical rules and accurate mapping of uncertainty are achieved.

The invention relates to the technical field of atomization powder making, in particular to a plasma rotating electrode atomization powder making system and method based on target particle size powder, and the system comprises a bar chamber used for storing electrode bars; the material pushing chamber is communicated with the bar material chamber, and a material pushing mechanism and a driving mechanism are arranged in the material pushing chamber; and the atomizing chamber is arranged on one side of the material pushing chamber. The powder characteristic monitoring device is used for monitoring the state of the powder for powder making in real time, process fluctuation can be detected in real time, parameters can be adjusted in time, hysteresis of traditional off-line sampling inspection is avoided, different production modes can be switched by controlling the distribution uniformity characteristic and the distribution width characteristic of the powder at the same time, and the production efficiency is improved. For example, the strict requirements of 3D printing for narrow-distribution and high-uniformity powder are met, for example, for wide-distribution powder needed by thermal spraying, the same equipment can achieve higher production flexibility, and diversified production requirements are met.

A method includes receiving, by a computing device, an image indicative of a cross-section of a thermally-sprayed layer. The thermally-sprayed layer defines a porosity comprising a void volume of the thermally-sprayed layer. The image comprises a matrix of pixels, each pixel in the matrix of pixels defining a respective luminance value of a plurality of luminance values. The method includes identifying, based on the luminance values, at least one pixel that is indicative of a void volume in the thermally-sprayed layer. The method includes calculating, based on the at least one pixel that is indicative of the void volume in the thermally-sprayed layer, a total porosity of the thermally-sprayed layer. The method includes determining, by the computing device and based on the at least one pixel that corresponds to a void volume in the thermally-sprayed layer, a quantification of a spatial homogeneity of the porosity of the thermally-sprayed layer.

The application belongs to the technical field of surface modification, and discloses a method for constructing a ceramic-based self-lubricating, high-wear-resistant and strong-corrosion-resistant coating based on thermal spraying technology and application. The method uses a thermal sprayed ceramic coating as a template, introduces a solid-liquid reversible lubricating phase, and after being heated and melted, the solid-liquid reversible lubricating phase is penetrated into inherent pores and micro / nano cracks in the ceramic coating through a vacuum impregnation process, and is solidified and retained in the defects after cooling, so that a new ceramic-based self-lubricating and strong-corrosion-resistant composite coating is finally obtained. The preparation method is simple, fast and efficient, and does not affect the mechanical properties of the ceramic coating, and the ceramic-based self-lubricating and strong-corrosion-resistant composite coating has low friction coefficient and excellent wear resistance and corrosion resistance.

The invention relates to the technical field of metal powder preparation, and discloses a high-zinc alloy powder preparation method and system.The method comprises the steps of raw material pretreatment and vacuum deep degassing, vacuum melting and active degassing, flow stabilization and diversion and gas-liquid synergistic atomization, solidification and collection under the protective atmosphere, and aftertreatment and packaging under the oxygen-free environment; the system is composed of a vacuum deep degassing unit, a vacuum melting and active degassing unit, a gas-liquid collaborative atomization unit, a powder collecting and cooling unit and an anaerobic operation and packaging unit. The high-quality zinc alloy powder which is low in oxygen content, high in sphericity degree and uniform in component can be stably prepared, and the method is suitable for being applied to the fields of additive manufacturing and thermal spraying.

The invention discloses a gradient coating preparation method combined with a gas phase aluminizing process, and relates to the technical field of thermal spraying, and the gradient coating preparation method comprises the following technological processes: S1, carrying out sand blasting treatment on a common gas turbine hot part material GH3536, and then carrying out transferred arc activation treatment on the sand-blasted surface by using vacuum plasma equipment; s2, Ni < 23 > Co < 20 > Cr < 12 > Al < 4 > Ta < 0.6 > Y powder is sprayed; s3, spraying of Ni < 23 > Co < 20 > Cr < 10 > Al < 0.6 > Y powder is conducted; s4, spraying of Ni20Cr10Al powder is carried out; s5, Ni5Al powder is sprayed; s6, a beta-NiAl layer containing an Al2O3 protective film is prepared on the surface of the coating and the surface of the part through the gas phase aluminizing technology; gradient coatings with different components are prepared through atmospheric plasma spraying, and finally a beta-NiAl layer containing an Al2O3 protective film is formed on the surfaces of the gradient coatings through gas phase aluminizing.

The invention discloses metal ceramic MAX-phase composite powder for spraying and a preparation method of the metal ceramic MAX-phase composite powder, and belongs to the field of metal ceramic composite materials. The method comprises the following steps: mixing Ni powder, Cr powder and Cr2AlC nano powder with deionized water, a binder and a dispersant according to a specific ratio, and carrying out wet ball milling to prepare uniform slurry; carrying out spray granulation to obtain primary spherical powder; and finally, carrying out spheroidizing treatment on the primary powder by adopting radio frequency plasma under the protection of inert gas to obtain a final product. The core of the preparation method is that through an optimized two-step process, many limitations in the application aspect of an existing MAX phase material are solved, and the composite powder which is high in sphericity degree, good in flowability, compact in interior and stable in MAX phase component is successfully prepared. The powder can be directly used for thermal spraying, and an ideal raw material is provided for preparing a high-performance MAX-phase metal ceramic coating.

The invention discloses a preparation method of a high-wear-resistance tungsten carbide coating for the inner surface of stainless steel, and belongs to the technical field of high-wear-resistance coating materials.The preparation method comprises the steps that a stainless steel sample is put into an electroplating pool to be electroplated, and a middle transition layer is formed on the surface of the stainless steel sample block; and the electroplated stainless steel sample block is subjected to surface cleaning and then placed in a CVD reaction hearth to be subjected to vapor deposition, and a tungsten carbide coating is formed on the surface of the stainless steel sample block. The method solves the problems that the inner surface of the stainless steel cannot be effectively coated, the coating thickness is not uniform, the coating hardness is insufficient and the like through conventional PVD, thermal spraying and other surface treatment processes, preparation of the high-hardness and high-thickness tungsten carbide coating on the inner surface of the stainless steel is achieved, the coating binding force is good, and the coating quality is high. The stainless steel can be widely applied to complex-structure stainless steel parts in the fields of aerospace, power generation equipment, petrochemical engineering and the like.

The invention discloses a laser cladding high-entropy alloy carbide ceramic coating and a preparation method thereof, and belongs to the technical field of high-entropy alloy coatings. A laser cladding technology is adopted, a matrix and high-entropy alloy-phenolic resin composite powder are subjected to in-situ melting through a high-energy laser beam, firm metallurgical bonding between the coating and the matrix is achieved, elements at an interface are in gradient transition, and the shear strength exceeds 100 MPa. The single-layer deposition thickness can reach more than 500 microns and can reach the centimeter level through multi-layer accumulation, so that the coating thickness capability is remarkably improved; the prepared coating is high in compactness, the porosity is lower than 5%, and the key technical contradiction that the thickness and the compactness cannot be synergistically optimized in traditional thermal spraying is effectively solved. Besides, the in-situ carbonization reaction under the methane atmosphere is innovatively adopted, the complex high-temperature synthesis process of traditional high-entropy carbide powder is avoided, the preparation cost is greatly reduced, the preparation period is greatly shortened, and the method has the remarkable advantages of being efficient, low in cost and high in performance.

A metal alloy powder composition consisting essentially of Nickel (32 to 42 wt %)-Aluminum (40-50 wt %)-Molybdenum (10-20 wt %)-Boron (0.1-2.0 wt %) in the particle size between 125 to 5 microns range and manufactured as an alloy by gas or water atomization process. This composition reduces the melting point of the alloy and minimizes the oxidation of aluminum in the alloy during thermal spray. This improves the integrity of the coating on electrodes in the alkaline water electrolysis application and the life of electrodes.

The invention provides a high-temperature-resistant flame-retardant double-component spraying polyurea coating which is prepared from a prepolymer component A and a secondary amine modified chain extender component B. The secondary amine modified chain extender is obtained by reacting hyperbranched polyethyleneimine with carboxylated graphene oxide and ammonium polyphosphate, the modified chain extender has a three-dimensional dendritic structure and amido, the cross-linking density can be improved and the mechanical property can be enhanced by reacting with an isocyanate-containing component, and meanwhile, a rigid structure and a functional group with flame retardance are introduced, so that the polyurea coating has high temperature resistance and flame retardance; the coating has a great application prospect in the aspect of being used as an internal heat insulation spraying polyurea coating.

The invention provides a method for preparing spherical aluminum tantalum alloy powder based on segmented voltage molten salt electrolysis. The method comprises the following steps: mixing Ta2O5 powder with a pore-forming agent and a conductive agent, pressing into a sheet, sintering at high temperature to prepare a Ta2O5 cathode sheet, carrying out segmented electrolysis in cryolite-based molten salt by taking graphite as an anode, and carrying out electrolysis at low voltage in the first stage, so that Ta2O5 is subjected to solid-state electrodeoxidation to be converted into tantalum particles; and then, the voltage is increased, aluminum ions in the molten salt are electrically deposited on the surfaces of the tantalum particles to form metal aluminum, aluminum-tantalum alloying reaction is induced, and the alloy product spontaneously forms spherical particles through the reaction heat release effect. The spherical aluminum tantalum alloy powder has the advantages of being short in technological process and low in cost, and the spherical aluminum tantalum alloy powder is uniform in particle size, high in sphericity degree, good in fluidity and suitable for the technical fields of laser beam / electron beam 3D printing, cladding forming, injection forming, thermal spraying and the like.

The invention relates to the technical field of image data processing, in particular to a thermal spraying coating quality detection system and method based on machine vision, and the method comprises the steps: collecting image index parameters; analyzing the image index characterization value based on the image index parameter; based on a comparison result of the image index characterization value and a preset image index characterization threshold value, determining whether the target sample coating image meets a standard or not; in response to the condition that the coating image of the target sample meets the standard, collecting performance index parameters of the target sample in a historical period; analyzing a performance index characterization value based on the performance index parameter; determining whether the coating quality of the target sample meets a standard or not based on a difference result between the performance index characterization value and a preset performance index characterization threshold value; and in response to the condition that the coating quality of the target sample does not meet the standard, determining a corresponding processing strategy based on a difference value between the performance index characterization value and a preset performance index characterization threshold value. According to the invention, the quality detection efficiency of machine vision is improved through self-adaptive regulation and control.

This invention discloses a laser thermal spraying gun, belonging to the field of laser additive manufacturing technology. It includes a connecting base, an air knife assembly, an inner nozzle, an outer nozzle, a cooling jacket cover, and a cooling jacket tube. The outer nozzle includes a powder feeding body and a Laval tube. The Laval tube has diffusion holes inside. The Laval nozzle accelerates the airflow through a tapered-expanding structure, forming a high-speed, high-temperature jet environment. This ensures the powder is fully preheated and uniformly dispersed before reaching the substrate. Combining the Laval tube with laser spraying combines the advantages of laser cladding and thermal spraying technologies. The accelerated effect of the Laval airflow, under high temperature and high pressure, allows the powder to fully contact the laser heat source over a sufficiently long flight distance through the Laval nozzle. This enables the powder to form a metallurgical bond with the substrate in a molten state, achieving a bonding strength 2-3 times that of traditional thermal spraying. This method is suitable for confined spaces used in the protection and repair of turbine blades from water erosion.

A method includes receiving, by a computing device, a raw image indicative of a cross-section of a thermally-sprayed layer. The image includes a matrix of pixels, and each respective pixel in the matrix of pixels defines a luminance value. The method may further include determining, based on the luminance values, at least one pixel that corresponds to an oxide component in the layer and removing the at least one pixel that corresponds to the oxide component in the layer to generate a modified matrix of pixels. The method may further include generating an oxide-filtered image based on the modified matrix of pixels. The method may further include converting, by the computing device and based on the luminance values, the oxide-filtered image into a binary image and determining, by the computing device and based at least partially on the binary image, a porosity of the coating layer.

The invention relates to the technical field of metal material surface modification, in particular to AlCrCuMoNi high-entropy alloy powder with high temperature, wear resistance, corrosion resistance and good heat conduction, a coating and a preparation method thereof.The high-entropy alloy powder with the particle size being 15-45 microns and suitable for thermal spraying is prepared through a mechanical alloying method, and then the high-entropy alloy powder is prepared through an oxygen-kerosene supersonic flame spraying technology; the preparation method comprises the following steps: spraying high-entropy alloy powder on the surface of a key part matrix by taking high-entropy alloy as a matrix, oxygen as a combustion improver, kerosene as a fuel, high-purity nitrogen as a powder feeding carrier gas and air as a cooling medium to prepare an AlCrCuMoNi HEA coating; al, Cr, Cu, Mo and Ni elementary substance powder is subjected to ball milling according to the required molar ratio through a mechanical alloying method, AlCrCuMoNi HEA powder is obtained, the coating is prepared through the hypersonic flame spraying technology, the method is suitable for improving the high-temperature abrasion resistance and hot corrosion resistance of the surfaces of key parts in the industries of energy, metallurgy, chemical engineering and the like, and the service life of boiler pipes is prolonged.

This invention relates to a coating alloy, based on Iron Boride (Fe2B), a powder developed for bonding the surfaces of steels. Coatings made with the powder of this invention, using methods such as fusion or thermal spraying, provide an increase in surface hardness, wear resistance, and corrosion resistance of metallic materials, especially steels, and therefore represent a significant alternative to bonding through thermochemical methods. The alloy powder developed in this invention essentially contains iron (Fe) and boron (B) elements, with a boron (B) content between 7.1 % and 10% by weight.

The present invention relates to a technical field related to grinding processing, and specifically provides a grinding device for thermal spray coating, comprising: a rack magazine, a collecting moving mechanism is provided at the lower inner side of the rack magazine, a supporting mechanism is provided inside the rack magazine, a frame is fixedly installed above both ends of the rack magazine, a connecting plate is commonly installed between the two groups of the frames, a slide is provided on the outer side of the connecting plate, a driving propulsion mechanism is provided inside the slide, and a slide rod is slidably provided at both ends of the inner side of the slide, and a rotating shaft is rotatably inserted at the lower inner ends of the two slide rods, and the two rotating shafts are fixedly connected to a connecting seat at one end away from the slide rod, and a support block is fixedly installed on one side edge of the two connecting seats, which is rotatably installed with an annular shell corresponding to the inner side of the support block, a gear ring is fixedly installed on one side of the annular shell, and a meshing mechanism is provided on one side of the gear ring. The present invention can adapt to a variety of radians, and sufficient grinding can remove uneven spraying areas and reduce the loss of the grinding structure.

This invention provides a carbon fiber reinforced polymer (CFRP) composite material that enhances the anchoring effect of the metal layer to the CFRP substrate and improves adhesion. [Solution] The CFRP composite material comprises a base material made of CFRP, a first metal layer laminated on the surface of the base material, and a second metal layer laminated on the surface of the first metal layer. The surface of the base material has carbon fiber cutting grooves formed to a depth in which the carbon fibers in the base material are actually cut, and the first metal penetrates into the grooves and is fixed therein. The manufacturing method includes (1) forming the cutting grooves, (2) laminating the first metal layer by thermal spraying (with penetration into the grooves), and (3) laminating the second metal layer by plating.

The invention relates to the technical field of coating preparation, in particular to a niobium alloy surface thermal spraying coating, a preparation method and application, according to the method, a silicide coating is prepared on the niobium alloy surface, halide reaction embedding siliconizing treatment is conducted, and the niobium alloy surface thermal spraying coating is obtained; the silicide coating is prepared on the surface of the niobium alloy through the thermal spraying technology, the rough surface can be formed, anchoring sites are provided for follow-up halide reaction embedding siliconizing treatment, in the follow-up halide reaction embedding siliconizing treatment process, silicon is diffused to a base body to react to form a siliconizing diffusion layer, and metallurgical bonding of a coating-base body interface is achieved. In addition, a continuous transition area is formed between the siliconizing diffusion layer and the silicide coating, stress concentration caused by component mutation is reduced, the risk of interface cracking is effectively reduced, the service life of the coating is prolonged, and the problems that in the prior art, the interface bonding force between a thermal spraying MoSi2-based silicide coating and a base body is poor, and the service life is short are solved.

The present invention belongs to the technical field of thermal spraying equipment, specifically a thermal spraying equipment for annular workpieces, comprising a base and a workpiece fixing assembly, wherein the workpiece fixing assembly comprises a positioning roller, an automatic telescopic rod and a lifting roller, wherein two positioning rollers and two lifting rollers are provided and are symmetrically arranged, and the workpiece fixing assembly adjusts the distance between the positioning roller and the lifting roller by the telescopic movement of the automatic telescopic rod, and the change in the distance between the positioning roller and the lifting roller can achieve the fixing of the annular workpiece from the inside or outside. When fixing the workpiece, the automatic telescopic rod will drive the lifting roller to rise and fall, and the lifting roller will change the distance between the positioning roller and the positioning roller when rising and falling, thereby achieving the fixing of the workpiece from the outside or inside of the workpiece, and when fixing from the inside, it is convenient to spray the outer wall of the workpiece, and when fixing from the outside, it is convenient to spray the inner wall of the workpiece, thereby achieving the effect of facilitating spraying and improving spraying efficiency.

The invention relates to spherical high-entropy carbide powder and a preparation method of a SiC / high-entropy carbide coating. According to the method, normal-pressure carbon thermal reduction synthesis of high-entropy carbides is realized in a common box-type furnace and in an air atmosphere through a local atmosphere isolation structure of'laying graphite paper, upper graphite powder and covering activated carbon ', then a compact SiC transition layer is generated in situ on a substrate by utilizing a two-step method of'plasma spraying of a pure silicon layer and then high-temperature embedding carburization', and the high-entropy carbide is prepared. And finally, the high-entropy carbide coating is prepared through a thermal spraying method. The process is simple, the cost is low, large-scale preparation is easy, the high-temperature wear resistance and the ablation resistance of the coating can be remarkably improved, and the harsh requirements of the aerospace field and the like for the ultra-high-temperature protective coating are met.

The application belongs to the technical field of faucet valve processing, and particularly relates to a tungsten carbide processing technology for a faucet valve sealing structure. The tungsten carbide coating formed by the shielding part and the valve plug surface in one body during spraying causes damage to the coating on the valve plug surface when the shielding part is disassembled, and affects the spraying quality. The following scheme is proposed, including base pretreatment, complete cleaning of the spraying surface by using alkaline cleaning liquid + mechanical treatment to remove surface oil stains and keep the surface clean; the spraying surface needs to be preheated before sand blasting to remove surface moisture and improve the bonding quality of the powder and the surface of the part, and the suitable preheating temperature of the base surface is 60-90 DEG C. The tungsten carbide processing technology for the faucet valve sealing structure has the effect of guaranteeing the spraying quality of the tungsten carbide coating. When spraying, the device can separate the coating of the base passage area from the coating of other parts before the spraying of the tungsten carbide coating is completed, so that damage to the coating after the spraying is completed is avoided.

The application discloses a kind of plasma spraying self-reduction TiC / Ti composite coating and its preparation method and application, belong to thermal spraying coating field, TiC powder, deionized water and binder are mixed and stirred and ball milled, and TiC spherical powder is prepared by spray granulation;Using plasma spraying process, TiC spherical powder is sprayed on substrate, so that TiC occurs self-reduction reaction to generate Ti metal phase, and forms plasma spraying self-reduction TiC / Ti composite coating on substrate;In plasma spraying self-reduction TiC / Ti composite coating, Ti metal phase is distributed between TiC ceramic phase, and forms layered inlay structure.The application uses TiC powder as raw material, and generates Ti metal bonding phase in situ by adjusting and controlling plasma spraying process parameters during spraying process, avoids additional metal bonding phase and subsequent annealing treatment, simplifies process flow and reduces cost.The bonding strength of the prepared plasma spraying self-reduction TiC / Ti composite coating can reach 52.40 MPa at most, which significantly improves the problem of large brittleness and poor interface bonding of traditional TiC coating.

The invention relates to a working roll for rolling metal products, in particular for rolling metal strips, comprising: a metal matrix; and a wear-resistant protective layer at least partially arranged on the base body, the wear-resistant protective layer being a thermally sprayed protective layer; wherein the particle size of the wear-resistant protective layer is less than or equal to 50 m, preferably less than or equal to 45 m, particularly preferably less than or equal to 30 m or less than or equal to 20 m.

The application relates to a preparation method of a metal-based ceramic composite material and the metal-based ceramic composite material, and steps are as follows: 1. ceramic particle screening and pretreatment: screening and polishing are sequentially performed on the ceramic particles, and the Al2O3 and B4C powder mixture is uniformly sprayed on the surface of the polished ceramic particles in a thermal spraying mode; 2. ceramic preform preparation: after the pretreated ceramic particles, a bonding agent and a mixed powder are uniformly mixed, the mixture is filled into a mold, one-time solidification treatment is performed, a preliminarily formed ceramic preform is obtained, secondary solidification treatment is further performed, and the ceramic preform is obtained; 3. metal-based ceramic composite material pouring forming: the ceramic preform is placed in a casting cavity, metal liquid pouring is performed, and after cooling, the composite material is taken out; 4. heat treatment: the composite material is sequentially subjected to multi-stage normalizing heat treatment and tempering heat treatment, and the metal-based ceramic composite material is obtained. The application solves the problems of ceramic particle peeling and composite layer cracking of the existing composite material.

A process for thermally spraying metal oxide coated ceramic particles onto a substrate comprising:(I) obtaining a plurality of metal oxide coated particles of silicon carbide, silicon nitride, boron carbide or boron nitride; and(ii) thermally spraying the particles of step (I) onto a substrate

The invention provides a thermal barrier coating high temperature resistance CMAS sedimentability evaluation method and system, and the method comprises the steps: preparing CMAS simulation particles with uniform particle size distribution through a spray granulation technology; spraying the CMAS to the surface of a thermal barrier coating sample to be evaluated by using a thermal spraying technology, observing the deposition state of the CMAS on the surface of the sample through a scanning electron microscope, carrying out image analysis and statistics based on the deposition state, and calculating the area deposition rate of the CMAS; performing three-dimensional shape reconstruction on the CMAS simulation particle sediment on the surface of the sample through a laser confocal microscope, and calculating the volume deposition rate of the CMAS based on reconstruction data; and comparing the area and volume deposition rate of the thermal barrier coating to be evaluated with a reference thermal barrier coating serving as a benchmark, and quantitatively evaluating the high-temperature CMAS deposition resistance of the thermal barrier coating to be evaluated. According to the method, the deposition behavior of the high-temperature CMAS on the surface of the thermal barrier coating is evaluated and measured, and the anti-CMAS performance of the thermal barrier coating in a real service environment is evaluated more accurately.

This invention discloses a composite thermal spray powder for wear-resistant coatings and its preparation method, relating to the field of thermal spray materials technology. The composite thermal spray powder for wear-resistant coatings comprises, by weight, the following components: 18-26 parts of a metal matrix material, 54-66 parts of a hard reinforcing phase, 8.5-12.5 parts of nano-Ti powder, 2.6-3.3 parts of a reactive carbon source, 0.8-1.5 parts of a buffer carbon source, 0.8-1.2 parts of a transient liquid phase additive, 1.5-2.5 parts of a lubricating functional component, and 0.5-1.5 parts of a modified coating material. The composite thermal spray powder for wear-resistant coatings provided by this invention has the following beneficial effects: precise and stable introduction of the reinforcing phase, and stable self-lubricating properties.

The invention relates to a zinc-tin alloy rotating target material preparation process based on a thermal spraying process. The zinc-tin alloy rotating target material preparation process comprises the following steps: (a) providing a pure zinc wire and a pure tin wire as raw materials; (b) the stainless steel back pipe is pretreated; (c) setting flame thermal spraying process parameters; (d) double-wire synchronous spraying is carried out; (e) dynamic component control: adjusting the wire supply speed according to the target alloy proportion; (f) temperature control: maintaining the surface temperature of the target material through back pipe water cooling and surface nitrogen cooling; and (g) post-processing: turning and polishing to obtain the final target material layer. According to the zinc-tin alloy rotating target material preparation process based on the thermal spraying process, a zinc-tin alloy wire material is replaced with pure zinc and pure tin wire materials, so that the production cost is reduced, and the size, purity, density and the like of the zinc-tin alloy target material meet the requirements of a subsequent sputter coating process; and the thermal spraying process for preparing the zinc-tin alloy target material is simple and low in cost.