50 results about "Surface conductivity" patented technology

The invention provides a method for preparing a high-performance lithium manganese iron phosphate positive electrode material based on a manganese iron phosphate precursor, and relates to the technical field of batteries. A method for preparing a high-performance lithium manganese iron phosphate positive electrode material based on a manganese iron phosphate precursor comprises the following steps: S1, mixing a phosphorus source, an iron source and a manganese source in a water medium, adding a surfactant, and carrying out ball milling, drying and sintering to obtain the manganese iron phosphate precursor; and S2, mixing the manganese iron phosphate precursor, a lithium source, a carbon source, a doping agent, an auxiliary agent and deionized water, and carrying out ball milling, drying and sintering to obtain the lithium manganese iron phosphate positive electrode material. The method can improve the surface / interface stability while improving the surface conductivity of the material, thereby prolonging the cycle life of the battery and improving the charge-discharge capacity of the battery.

The invention discloses a high-temperature test method for a power semiconductor device, and relates to the technical field of quantum thermal control, and the method comprises the steps: collecting a temperature field and surface conductivity data of an edge region of the power semiconductor device in real time, and synchronously applying an electric stress of a specified working voltage to the power semiconductor device; an internal thermal displacement field is reconstructed based on the temperature field, a calibration thermal displacement field is generated, and the topological number of the edge area is calculated in combination with the surface conductivity data; generating a thermal failure risk distribution map according to the spatial position of the peak value of the thermodynamic entropy yield, and locking a high-entropy variable power dense region; and the electric stress applying direction is dynamically adjusted in association with the high-entropy variable power dense area, and a thermal failure diagnosis report is output after a full-period high-temperature test is completed. According to the method, submicron-level real-time positioning of the thermodynamic entropy generation peak value under the high-temperature working condition is achieved through collaborative mapping of the quantized calibration thermal displacement field and the tensor field of the classic temperature gradient.

The invention discloses a high-gain diamond logic phase inverter and a preparation method thereof, and aims to solve the problem that the voltage gain of an existing logic phase inverter is relatively small. According to the high-gain diamond logic inverter, a diamond substrate is subjected to hydrotreating through hydrogen plasma to form the diamond substrate with a hydrogen terminal, a conducting channel is formed after the surface of the hydrogen terminal is in contact with air, and a first source electrode, a first drain electrode, a second source electrode and a second drain electrode are arranged on the diamond substrate. A first ferroelectric medium layer and a second ferroelectric medium layer are deposited on a diamond substrate, a first grid electrode is arranged on the first ferroelectric medium layer, and a second grid electrode is arranged on the second ferroelectric medium layer. According to the invention, an electron beam evaporation process is adopted to form an orthorhombic phase on a ferroelectric material deposited at a low temperature, the ferroelectric material has convertible ferroelectric characteristics, and ultra-steep sub-threshold swing is realized; the surface conductivity can be regulated and controlled by treating the surface of the hydrogen terminal diamond through the oxygen plasma, current matching is achieved, and the logic inverter works in a deep subthreshold region.

The invention discloses a niobium-doped and carbon nanotube continuously coated lithium iron nickel phosphate material and a preparation method thereof, and belongs to the technical field of lithium ion battery positive electrode materials. The niobium source and the phosphorus source are added step by step, the concentration gradient distribution of the niobium element in the material is realized, and niobium is preferentially doped in the [100] crystal orientation through three-section temperature control sintering, so that the bulk phase conductivity and the lithium ion mobility are remarkably improved, and the capacity loss caused by excessive doping is avoided while the lattice structure is stabilized. In addition, the carbon nanotubes and the nitrogen-containing carbon source have a synergistic effect, Li-N-C covalent bonds are formed on the surface of the material, the interface stability is enhanced, the interface side reaction is effectively inhibited, and the surface conductivity is improved. According to the method, through double modification of doping and coating, the problems of low conductivity and poor cycling stability of the lithium iron nickel phosphate material are successfully solved, and the final product shows excellent rate capability and long cycle life.

The present invention relates to the technical field of surface modification of biochar, and discloses a method for enhancing the surface conductivity of biochar, a composite material loaded with transition metals thereof, and applications. Aiming at the problem of poor conductivity of biochar, in the present invention, lignocellulose or cellulose is impregnated in a solvent containing transition metal ions and nitrogen / oxygen / phosphorus heteroatoms, and a metal-heteroatom-cellulose complex precursor is formed through a hydrothermal reaction, and then through high-temperature calcination and pickling treatment, a composite material with a high-conductivity carbon layer and a stable transition metal nanoflower structure is prepared. This method utilizes the strong complexation of transition metals with cellulose and the solvent to form a metal-heteroatom-doped carbon layer on the surface of biochar, which has excellent interfacial electron transfer ability (R ct = 1.671 Ω). The obtained material has both a high specific surface area, a porous structure, excellent oxygen electrocatalytic activity, and acid corrosion resistance stability, and can replace noble metal catalysts and be applied to energy devices such as fuel cells.

The invention relates to the technical field of lithium ion batteries, in particular to a regenerated graphite negative electrode material containing a nitrogen-carbon layer and a preparation method and application thereof.The preparation method comprises the steps that waste graphite powder obtained by conducting microwave pretreatment on waste lithium ion battery negative electrode pieces and a nitrogen-containing organic sugar solution are mixed, and after a reaction, the regenerated graphite negative electrode material containing the nitrogen-carbon layer is obtained; a precursor of the coated graphite negative electrode material is obtained; and carrying out microwave heat treatment on the precursor of the coated graphite negative electrode material to obtain the regenerated graphite negative electrode material containing the nitrogen and carbon layer. In a microwave heat treatment process, graphite is rapidly heated under the action of microwaves, heat is directly conducted to a nitrogen-containing organic sugar coating layer on the surface of a precursor, in-situ carbonization of the nitrogen-containing organic sugar coating layer is rapidly and uniformly realized to form a nitrogen-containing carbon layer, and existence of nitrogen atoms on the surface of regenerated graphite reduces the adsorption energy of a negative electrode to Li < + > and promotes migration of Li < + >; and the nitrogen-containing carbon layer can effectively repair the surface defects and damage of the waste graphite, so that good rate capability is embodied.

The invention discloses normal-temperature nickel-free conductive confining liquid for an aluminum alloy anode oxide film, a preparation method and a confining method. The sealing liquid comprises a sealing agent and a pH regulator; the sealing agent is prepared from the following components according to volume mass: 700 to 800 ml / L of solvent, 0.2 to 1.5 mol / L of main salt, 2.0 to 40.0 g / L of film-forming agent, 0.2 to 30.0 g / L of film-forming accelerant and 50 to 100 ml / L of deionized water, the pH value of the sealing agent is regulated to 0.1-1.2 by adopting a pH regulator; the main salt is any one or a mixture of two of anhydrous stannous chloride and stannous chloride dehydrate. The confining liquid is free of nickel and fluorine, free of other harmful heavy metals, energy-saving, free of sewage discharge, resistant to corrosion and conductive, and suitable for protection treatment of aluminum components with surface conduction requirements. The aluminum alloy anode oxide film is subjected to sealing treatment, and a nickel-free sealing film which is excellent in corrosion resistance and has electrical conductivity can be obtained.

The invention provides a method and a system for detecting the conductivity of a metal surface of a nano-silver coating. The method comprises the following steps: acquiring induction signals of a coating metal sample under alternating electromagnetic fields with different test frequencies; selecting a test frequency as a selected test frequency, determining an electric field reflection relation of an interface between a coating and a substrate in the coating metal sample according to the induction signal under the selected test frequency, and identifying electromagnetic attenuation of induced eddy current flowing through different depths of the coating metal sample based on the electric field reflection relation; according to all the electromagnetic attenuation amounts, the accumulated migration amount of the charge skin effect in the coating metal sample under the selected test frequency is recognized; and determining a frequency constraint condition of conductivity detection according to the accumulated migration volume under all the test frequencies, and detecting the surface conductivity of the coating metal sample according to the frequency constraint condition. By adopting the scheme of the invention, the influence of the surface roughness on the eddy current detection can be limited while the interference of the skin effect is avoided.

The present specification discloses a titanium plate for a bipolar plate, having excellent surface conductivity and excellent durability. The titanium plate for a bipolar plate, according to the present invention, comprises, by wt%: a base material including 0.001-0.09% of Si, 0.065% or less of Al, and the remainder of Ti and inevitable impurities; and a surface film layer including 0.20% or less of Si, 0.20% or less of O, and the remainder of Ti and inevitable impurities, wherein the surface film layer having the maximum wt% of O can satisfy expression (1). Expression (1): 0.05 ≤ Si / (Ti+O) ≤ 0.4 (wherein Si, Ti, and O indicate wt% of the respective elements.)

The invention relates to the technical field of conductive glass, in particular to high-transmittance ITO conductive glass and a preparation method thereof.The high-transmittance ITO conductive glass is prepared by firstly cleaning a glass substrate, then sputtering a first SiO2 film on the surface of the glass substrate through the magnetron sputtering technology and then sputtering an ITO film on the surface of the first SiO2 film; and sequentially sputtering a second SiO2 thin film, a first Ag thin film, a third SiO2 thin film, a second Ag thin film, a fourth SiO2 thin film, a third Ag thin film and a fifth SiO2 thin film on the surface of the ITO thin film to finally obtain the high-transmittance ITO conductive glass. The method is simple and convenient in process and high in controllability, the used materials are cheap and easy to obtain, and the method has a good industrial application prospect. In the constructed structure, SiO2 and ITO cooperate to form a three-layer antireflection film system, and the visible light transmittance of the composite film layer can be remarkably improved. Meanwhile, by introducing multiple layers of ultrathin silver (Ag) films into the top layer SiO2, a composite nano conductive path is formed, and effective cross-layer transmission of carriers can be realized, so that the surface layer SiO2 is endowed with good surface conductivity.

The invention discloses a modified epoxy insulator for reducing surface charge accumulation and a preparation method thereof, and the method comprises the following steps: (1) dissolving dried nano Al2O3 particles in a curing agent, and dispersing to obtain a nano particle curing agent solution; (2) mixing the nano particle curing agent solution, epoxy resin and an accelerant in a vacuum environment, and curing to obtain a nano modified insulator sample; and (3) carrying out ultrasonic treatment on the nano-modified insulator sample by adopting absolute ethyl alcohol, drying, and then carrying out ozone treatment to obtain the modified epoxy insulator capable of reducing surface charge accumulation. According to the invention, material body transport capability can be reduced, charge accumulation through body transport is inhibited, insulator surface conductance is enhanced, and surface charge dissipation is accelerated.

This enables improved (enhanced) charge trapping capability and suppression of parasitic surface conductivity within the wafer structure. [Solution] The wafer structure 240 includes a trap-rich layer 214 bonded to a handle wafer 224 such that the grain structure within the trap-rich layer 214 becomes coarser adjacent to the handle wafer 224, and the grain size within the grain structure decreases away from the handle wafer 224, thereby improving the trapping efficiency of the wafer structure 240 within the trap-rich layer 214 at the interface (IF) toward the top wafer. A method for manufacturing the wafer structure 240 includes the steps of depositing a trap-rich layer 214 on a top wafer 204 and bonding a handle wafer 224 onto the top wafer 204 such that the trap-rich layer 214 is located between the top wafer 204 and the handle wafer 224.

This enables improved (enhanced) charge trapping capability and suppression of parasitic surface conductivity within the wafer structure. [Solution] The wafer structure 232 includes a trap-rich layer 214 bonded to a handle wafer 224 such that the grain structure within the trap-rich layer 214 becomes coarser adjacent to the handle wafer 224, and the grain size within the grain structure decreases away from the handle wafer 224, thereby improving the trapping efficiency of the wafer structure 232 within the trap-rich layer 214 at the interface (IF) toward the top wafer. A method for manufacturing the wafer structure 232 includes the steps of depositing a trap-rich layer 214 on a top wafer 204 and bonding a handle wafer 224 onto the top wafer 204 such that the trap-rich layer 214 is located between the top wafer 204 and the handle wafer 224.

This application discloses a novel polyimide composite film material with high surface electrical strength, comprising a polyimide base layer and an electrospun polyimide composite nanofiber surface layer, wherein the electrospun polyimide composite nanofiber surface layer contains a metal compound; the thickness of the polyimide composite film material is 25–250 μm. The polyimide composite film material provided in this application is composed of a polyimide resin base layer and an electrospun polyimide composite nanofiber surface layer, which are ultimately subjected to high-temperature imidization. After a chemical reaction, the layers are bonded together to form a single unit, exhibiting strong interlayer adhesion. This novel polyimide composite film material, while maintaining excellent mechanical properties, possesses a lower secondary electron emission coefficient, higher surface conductivity, and faster surface charge dissipation capability, thereby improving the surface electrical strength of the polyimide film material through multiple pathways, meeting the needs of spacecraft manufacturing for insulating materials.

The present application relates to the field of insulating material surface modification, and particularly to a polishing method for improving the surface flashover performance of a three-column insulator, which comprises longitudinally dividing into equidistant annular regions; cleaning the surface of the three-column insulator, measuring the potential, surface conductivity and roughness of each region of the three-column insulator; and polishing in gradient from the high-voltage end to the grounding end. The polishing method for improving the surface flashover performance of a three-column insulator can improve the modification efficiency and modification results of large three-column insulators.

The invention discloses a foam-based copper sulfide smoke agent and a preparation method thereof, and relates to the technical field of interference smoke agents, and the preparation method specifically comprises the following steps: step 1, adding a foaming agent into raw material polyphenyl particles, heating and melting to 250-360 DEG C, and melting and foaming to obtain a foam melt; 2, under the stirring condition, the new electronic interference material is gradually added, the foaming temperature is kept unchanged till the new electronic interference material is evenly dispersed in the foam melt, extrusion granulation is conducted, the particle size is controlled to range from 3 mm to 8 mm, cooling classification is conducted, and the target smoke agent is obtained; and 3, coating the surface of the target smoke agent with conductive carbon paste to obtain the foam-based copper sulfide smoke agent. Compared with the prior art, the device has the advantages that the device can suspend in the air for a long time; the surface conductivity is improved, and the electromagnetic interference and the shielding capability are further improved.

The present application provides a method and system for detecting the conductive properties of a metal surface coated with a nanosilver coating. The method collects the induced signals of the coated metal sample under alternating electromagnetic fields at different test frequencies; selects a test frequency as a selected test frequency, determines the electric field reflection relationship at the interface between the coating and the substrate in the coated metal sample based on the induced signals at the selected test frequency, and identifies the electromagnetic attenuation of the induced eddy current flowing through different depths of the coated metal sample based on the electric field reflection relationship; identifies the cumulative migration amount of the charge skin effect in the coated metal sample at the selected test frequency based on all electromagnetic attenuations; determines the frequency constraint conditions for the conductive properties detection based on the cumulative migration amounts at all test frequencies, and detects the surface conductivity of the coated metal sample according to the frequency constraint conditions. The solution of the present application can avoid the interference of the skin effect while limiting the influence of surface roughness on eddy current detection.

The invention provides a gas sensitive detector based on a halide perovskite material and a preparation method thereof, and relates to the technical field of semiconductor gas detectors. The gas sensitive detector comprises: an insulating base; the gas sensitive material is arranged on the insulating base and is used for carrying out gas detection by utilizing a negative photoelectric effect generated by adsorbing gas, and the gas sensitive material is a manganese-doped Cs4PbBr6 single crystal material. According to the gas sensitive detector, a manganese-doped Cs4PbBr6 material is adopted as a gas detection material of the gas sensitive detector, the adsorption capacity of Cs4PbBr6 crystal to air is enhanced through Mn doping, and adsorbed gas and the surface of the material are subjected to physical reaction and chemical reaction, so that a large number of electron-hole pairs are generated on the surface of the material, the carrier concentration of the surface is increased, the potential barrier is reduced, and the performance of the gas sensitive detector is improved. When a 405nm laser is used for irradiation, photon energy is absorbed by gas adsorbed on the surface of the material, a desorption phenomenon occurs, and the conductivity of the surface of the material is reduced.

The present invention provides a binary high-nickel sodium-ion battery cathode material, a preparation method and an application thereof. The binary high-nickel sodium-ion battery cathode material includes a sodium-ion battery cathode particle material and a Ni-NaP layer coated on the surface of the cathode particle material. By mixing the sodium-ion battery cathode particle material, phosphate, and organic glue and sintering them, the binary high-nickel sodium-ion battery cathode material can be obtained, which can be applied to a sodium-ion battery cathode sheet and a sodium-ion battery. In the binary high-nickel sodium-ion battery cathode material prepared by the present invention, the Ni-NaP layer has strong conductivity, which helps to improve the surface conductivity of the particles, can increase the conductivity of the cathode material, and promotes the transport of ions between the cathode particles.

This invention belongs to the field of thermosensitive materials technology, specifically relating to a nanosheet composite material and its preparation method, a conductive nanocomposite paper with shape memory function, and its application. This invention provides a nanosheet composite material comprising M(OH)(OCH3) nanosheets and polydopamine and a conductive metal loaded on the M(OH)(OCH3) nanosheets; wherein M includes Co and Ni. The conductive nanocomposite paper prepared from the nanosheet composite material provided by this invention, based on the excellent surface conductivity and thermally triggered shape memory characteristics of nanopaper, can be used as a fire alarm paper without direct contact with flames. It can connect to the alarm circuit when abnormal heat accumulation occurs, thereby achieving sensitive early fire alarm.

This invention provides a device and method for testing the surface conductivity of conductive wires in the millimeter-wave to terahertz frequency band, belonging to the field of surface conductivity testing technology. The testing device is designed based on a double-concave quasi-optical cavity and innovatively utilizes the differentiated multi-mode of the quasi-optical cavity to accurately extract key geometric and electrical parameters of the conductive wire: the electric field of the symmetric mode is concentrated on the cavity axis, and the radius of the conductive wire at this position directly affects the coupling volume with the electric field. Therefore, the frequency shift of the symmetric mode is used to calculate the precise radius of the conductive wire based on the principle of shape perturbation; the antisymmetric mode has a zero electric field at the axis and is more sensitive to surface loss. The quality factor variation value is determined using the antisymmetric mode. Finally, based on the cavity wall impedance perturbation theory, combined with the radius and quality factor, the surface conductivity of the conductive wire is measured, achieving accurate measurement of the surface conductivity of a single fine conductive wire in the millimeter-wave to terahertz frequency band.

The invention discloses a second harmonic enhancement method, a semiconductor-graphene nonlinear composite structure is adopted, the semiconductor-graphene nonlinear composite structure comprises at least two anisotropic nano-particles wrapped by graphene, a gap is arranged between every two nano-particles, and the gaps are arranged between every two adjacent nano-particles. The surface conductivity of graphene is composed of in-band conductivity and inter-band conductivity, and the second harmonic scattering efficiency is enhanced by three orders of magnitude through the near-field coupling characteristic between two graphene wrapped nanoparticles. According to the invention, the coupling characteristic between two graphene-coated nano-particles is utilized, so that the enhancement of second harmonic scattering up to 3 orders of magnitude is realized.

The present application relates to the technical field of laundry treatment. Provided is a laundry treatment apparatus. The laundry treatment apparatus comprises a laundry accommodating drum, a lifting rib, and an electrical conductivity measurement device, wherein the laundry accommodating drum has a laundry accommodating cavity; the lifting rib is arranged in the laundry containing cavity; and at least part of the electrical conductivity measurement device is arranged on the outer surface of the lifting rib. At least part of the electrical conductivity measurement device is arranged on the outer surface of the lifting rib, and the electrical conductivity measurement device can be in contact with loads such as laundry in the laundry accommodating cavity, thereby sensing the drying degree of the laundry at a short distance, and the accuracy of determining the drying degree of the laundry in the laundry accommodating drum is thus effectively improved.

The invention relates to a high-conductivity fingerprint-resistant galvanized sheet and a production method thereof. Strip steel comprises the following chemical components: 0.001%-0.460% of C, 0.01%-0.80% of Si, 0.20%-2.60% of Mn, 0.01%-0.50% of Cr, 0.01%-0.25% of Mo, less than or equal to 0.10% of Ni, less than or equal to 0.10% of Cu, less than or equal to 0.500% of Nb, less than or equal to 0.300% of Ti, less than or equal to 0.008% of V, less than or equal to 0.005% of B, 0.015%-0.045% of Al, less than or equal to 0.004% of N, less than or equal to 0.080% of P, less than or equal to 0.012% of S and the balance of Fe and impurities. The surface of the strip steel is plated with a fingerprint-resistant film. For strip steel with different thicknesses and different strength grades, the finishing rolling force, the surface roughness and the film weight of the fingerprint-resistant film are accurately controlled; an air cooling film mode is adopted, and for strip steel of different thicknesses, the plate temperature after drying, the plate temperature after cooling of an ascending section, the plate temperature after cooling of a horizontal section and the plate temperature after cooling of a descending section are accurately controlled; and finally, the surface conductivity of the fingerprint-resistant galvanized sheet finished product is improved.

Disclosed herein is a titanium plate with excellent surface conductivity and excellent durability. The titanium plate for a fuel cell separator according to the present disclosure includes: a titanium (Ti) base material including, in mass%, Si: 0.001 to 0.09%, a remainder Ti, and inevitable impurities; and a surface coating layer in which a content of each of Ti, Si, and O exceeds 0% when measured by angle-resolved X-ray photoelectron spectroscopy using an Al-Kα X-ray source under a condition where a photoelectron takeoff angle is 45°. The surface coating layer satisfies a following formula (1): 0.2≤Siat.% / Tiat.%+Siat.%≤0.8

The invention discloses a synthetic antistatic fiber for sports underwear and the sports underwear, relates to the technical field of textiles, and aims to solve the problem of weak antistatic capability of the antistatic fiber in a dry season. According to the key points of the technical scheme, the composite material comprises a substrate and filler, the substrate is made of polyester fibers, the filler comprises conductive particles, moisture conducting particles and a substrate catalyst, and the mass ratio of the conductive particles to the moisture conducting particles to the substrate catalyst is 20-25: 45-50: 0.1-0.3. The conductive particles and the moisture conducting particles are mixed during spinning of the polyester fibers, the conductive particles are added, so that when the air humidity is small, the conductive particles can provide a conductive path for static electricity, the effect of discharging the static electricity can be achieved, meanwhile, the moisture conducting particles can increase the humidity of the surfaces of the conductive particles, and the moisture conducting effect is improved. Therefore, the surface conductivity of the conductive particles is improved, and the antistatic capability of the conductive particles is improved.

The application provides a long carbon chain modified PA66 composite material and a preparation method thereof, and belongs to the field of polymer material modification. The long carbon chain molecule containing both quaternary ammonium salt cation groups and siloxane groups is combined with functional nanoparticles, and is co-grafted and modified on the surface of the PA66 molecule pre-grafted with amino acids to prepare a PA66 composite film with super-hydrophobic function and antistatic performance, so as to solve the problems that the existing PA66 material has strong hygroscopicity, weak antistatic capacity and cannot be applied in the high-end electronic and semiconductor fields. The long carbon chain modified PA66 composite material prepared by the application has excellent super-hydrophobicity and antistatic performance, and can maintain stable surface conductivity in different humidity environments, and still maintains stability after physical friction and solution erosion, and the preparation process is simple, suitable for large-scale production and application, and shows high development potential.

This invention belongs to the field of flow batteries, specifically relating to a high-strength flexible bipolar plate and its preparation method. The method includes: electrospinning and carbonizing a spinning solution containing polyacrylonitrile, metal salts, and organic acids to obtain carbon fiber filaments; extruding and granulating materials such as PE, EPDM, carbon black, and antioxidants, followed by crushing and grinding to obtain elastomer powder; dissolving polyimide in DMF, adding EPDM-PE powder, and then ultrasonically dispersing and vacuum distilling to obtain a concentrated solution of polyimide-coated EPDM-PE core-shell structure; and hot-pressing the concentrated solution with carbon fiber filaments and graphite, respectively. The bipolar plate prepared by this invention possesses high strength, high conductivity, and good flexibility, with a tensile strength ≥40MPa, surface conductivity ≥256S / cm, and bulk resistance ≤10mΩ·cm². After 100 cycles in a vanadium redox flow battery, its energy efficiency is ≥82.1%, making it suitable for high-performance flow batteries.

The invention discloses a welding post-processing method of a thin-wall high-frequency cavity and the thin-wall high-frequency cavity. The method comprises the step of removing the knife marks of the welded thin-wall high-frequency cavity. And then, carrying out surface fine grinding treatment on the thin-wall high-frequency cavity subjected to the knife mark removal treatment. And then, cleaning the thin-wall high-frequency cavity subjected to surface fine grinding treatment. And then carrying out vacuum annealing treatment on the cleaned thin-wall high-frequency cavity. And finally, the thin-wall high-frequency cavity subjected to vacuum annealing treatment is subjected to sealing storage treatment, so that welding post-treatment of the thin-wall high-frequency cavity is completed. Therefore, the surface conductivity of the thin-wall high-frequency cavity can be effectively improved, and the electromagnetic performance of the thin-wall high-frequency cavity is guaranteed. And moreover, structural deformation is reduced, frequency drift and cracking risks are avoided, the dimensional stability of the thin-wall high-frequency cavity is improved, and the fatigue life of the thin-wall high-frequency cavity is prolonged. In addition, the clean surface of the annealed thin-wall high-frequency cavity can be prevented from being oxidized again, and therefore long-term storage of the thin-wall high-frequency cavity is achieved.