28results about How to "Improve microstructure" patented technology

The application relates to the technical field of zirconium-niobium alloy material processing, in particular to a preparation method of a large-diameter zirconium-niobium alloy pipe for nuclear industry, which comprises the following steps: S1, mixing nuclear-grade sponge zirconium and niobium scraps, or mixing zirconium-niobium alloy, zirconium dioxide and iron; melting the mixture and preparing a zirconium-niobium alloy ingot; S2, sequentially performing large deformation forging in a beta single-phase zone and an alpha+beta two-phase zone; S3, drilling a central hole in the axial direction of a round-forging blank; quenching in the beta single-phase zone; S4, coating an anti-galling agent on the surface of the central hole and heating to prepare a pipe blank in the mode of cross piercing; S5, performing periodic forging and rolling on the pipe blank; S6, annealing the hot-rolled pipe twice; and straightening the hot-rolled pipe after the second-stage annealing. The zirconium-niobium alloy pipe has uniform microstructure, good mechanical properties and corrosion resistance, the production direction of the brittle hydride is nearly parallel to the circumferential direction of the pipe, and brittle damage of the pipe wall thickness caused by the crack propagation of the hydride is avoided.

This invention provides a method for improving the microstructure and corrosion uniformity of low-temperature extruded magnesium alloys, belonging to the field of magnesium alloy preparation and processing. The method includes the following steps: S1: Cutting a low-alloy element content magnesium alloy ingot and removing the surface oxide layer to obtain a cast sample; S2: Performing pulsed current homogenization treatment on the cast sample; S3: Removing the surface oxide layer from the homogenized alloy to process it into an extrusion billet; S4: Performing low-temperature extrusion treatment on the extrusion billet under pulsed current assistance. This invention improves the microstructure and corrosion uniformity of low-temperature extruded magnesium alloys while ensuring high strength and plasticity, and is suitable for the efficient and energy-saving preparation of biodegradable magnesium alloy extruded bars and sheets.

This invention discloses a multi-process synergistic method for strengthening and toughening titanium alloys. The method includes: firstly, pre-treating the titanium alloy surface with sandblasting; then, subjecting the pre-treated titanium alloy to solid embedding carburizing treatment; subsequently, under inert atmosphere protection, sequentially subjecting the carburized titanium alloy to solution treatment, rapid cryogenic treatment, and aging treatment; and finally, shot peening the surface of the heat-treated titanium alloy. This invention solves the problem in existing technologies where a single process is insufficient to synergistically improve the strength and toughness of titanium alloys, achieving a synergistic match between high strength and high hardness on the surface of the titanium alloy material and high toughness in the matrix.

The application relates to the field of ceramic materials, and particularly discloses high-thermal-conductivity alumina ceramics and a preparation process thereof. The high-thermal-conductivity alumina ceramics are prepared from 50-70 parts of alumina powder, 40-50 parts of alumina fiber, 8-15 parts of a sintering aid, 0.7-1.5 parts of a dispersant and 0.2-0.3 parts of a binder, wherein the sintering aid is beryllium-zirconium composite fiber. The high-thermal-conductivity alumina ceramics have excellent thermal conductivity and mechanical properties, and have important application prospects in the field of heat dissipation of high-performance electronic devices. In addition, the preparation process can reduce the sintering temperature of the alumina ceramics, form a more uniform and refined grain system in the alumina ceramics, and significantly improve the thermal conductivity of the alumina ceramics.

This invention discloses a highly wear-resistant and corrosion-resistant multi-principal element alloy and its preparation method, belonging to the field of metallic material preparation technology. It includes four main alloying elements (Al, Cr, Fe, and Ni) and a dopant element (Mn). The chemical composition of the multi-principal element alloy satisfies the general formula Al... a Cr b Fe c Ni d Mn e Where a is the atomic percentage of Al, b is the atomic percentage of Cr, c is the atomic percentage of Fe, d is the atomic percentage of Ni, and e is the atomic percentage of Mn, with the sum of the atomic percentages of each element being 100%. This invention regulates the phase, microstructure, and elemental distribution of the alloy through Mn doping, resulting in an alloy that possesses high hardness, excellent corrosion resistance, and corrosion wear resistance, as well as good plastic processing performance. The supporting preparation method is simple, with controllable parameters and readily available raw materials, making it suitable for large-scale industrial production. It can be widely used in key structural components of marine engineering equipment and other equipment operating under harsh corrosion-wear coupling conditions.

The application discloses a kind of CL-AuNPs@CD-MOF / Zein-PLA antibacterial films and preparation method and application thereof.The application is prepared gold nanoparticle (AuNPs) by green synthesis strategy, with CD-MOF as stabilizer, p-coumaric acid (p-CA) as natural reducing agent, by reducing tetrachloroauric acid (HAuCl4), CD-MOF is obtained by covalent crosslinking modification CL-AuNPs@CD-MOF with diphenyl carbonate (DPC), finally it is introduced into corn alcohol-soluble protein (Zein)-polylactic acid (PLA) composite film, utilize Zein excellent oxygen barrier property and PLA excellent mechanical property mutual coordination, construct the respiration microenvironment with suitable water vapor and oxygen permeability, so as to effectively inhibit the proliferation of microorganism on the surface of agaricus bisporus, and maintain its sensory quality.The composite film has significantly enhanced water stability, realizes the sustained release of gold nanoparticles, can effectively inhibit the microbial infection of agaricus bisporus after harvest.

This invention relates to the field of welding technology, specifically to a method for strengthening the heat-affected zone (HAZ) of thick low-carbon, low-alloy ship steel plates that withstand high heat input welding; more specifically, it relates to a method for strengthening the HAZ of thick low-carbon, low-alloy ship steel plates that withstand high heat input welding and its application. This invention uses a first flux as a printing material, which is melted onto the surface of a steel substrate via arc printing to obtain a steel billet. The first flux is mainly composed of CaF2, SiO2, MnO, and TiO2 in a mass ratio of 25–32:25–32:25–32:4–25. The steel billet is then rolled and welded. This method has advantages such as simple operation, low cost, short time consumption, and high production efficiency. Furthermore, the steel heat-affected zone prepared by this method has a large number of fine, dispersed inclusions and fine grains, greatly improving the mechanical properties of the heat-affected zone.

The application discloses a processing method of a high-entropy alloy, which comprises first laser action, second laser action, electric field action and He + ion irradiation, coupling of the three means, and can realize improvement of the corrosion resistance of the high-entropy alloy, and through accurate matching and regulation of multiple process parameters, a synergistic effect is realized. Specifically, a certain amount of He + ion irradiation can improve the residual stress distribution and mechanical properties of the surface layer of the high-entropy alloy, the electric field action can improve the diffusion of the composition of the high-entropy alloy, and the laser action can optimize the microstructure, so that the pitting corrosion resistance, the crevice corrosion resistance and the stress corrosion resistance of the high-entropy alloy can be significantly improved as a whole, the comprehensive corrosion resistance of the high-entropy alloy is significantly enhanced, and the market application value of the high-entropy alloy is increased, so as to meet the demand of nuclear power plants for corrosion-resistant materials.

This invention provides an inverted perovskite solar cell, its fabrication method, a perovskite film composition, a crystallizing solvate, an electrical device, and its applications. The method includes: seeding crystals on a substrate with a crystallizing solvate before applying a perovskite precursor solution; the general formula of the crystallizing solvate is A. x PbX4·yDMSO, where A is a cation selected from the following substances: ethylenediamine, butanediamine, heptamethamine, phenylethylamine, piperazine, N,N'-dimethylethylenediamine, N-methylethylenediamine, N,N,N',N'-tetramethylethylenediamine, N,N,N'-trimethylethylenediamine, N,N-dimethylethylenediamine; X is selected from I ‑ ,Br ‑ Cl ‑ x is 1-2; y is 1-3. The PCE of the PSC of this invention reaches 26.13%, FF reaches 86.75%, and after 1000 hours of maximum power point tracking, it maintains 93% of the initial PCE and after 900 hours of isothermal heating at 85°C, it maintains 85% of the initial PCE.

This invention discloses a nickel-molybdenum hydrogen evolution electrode based on a surfactant complex, its preparation method, and its application, belonging to the field of water electrolysis for hydrogen production technology. The preparation method includes: pretreating a nickel mesh substrate and using it as the cathode for electrodeposition in an electroplating solution containing nickel salt, molybdate, complexing agent, and a complexed surfactant; the complexed surfactant consists of at least one anionic surfactant and at least one cationic surfactant. This invention, by introducing a complex system of anionic and cationic surfactants into the electrodeposition solution, synergistically regulates the electrocrystallization process, effectively refining the grains of the nickel-molybdenum alloy catalyst layer, increasing the number of active sites, and significantly reducing the hydrogen evolution overpotential. The electrode prepared by this method achieves a hydrogen evolution overpotential of 100 mA / cm². 2 At the specified current density, the overpotential can be as low as 92.8 mV, and it exhibits excellent stability. This method is simple, low-cost, and reproducible, making it suitable for large-scale preparation of high-performance water electrolysis hydrogen production cathodes.

This application relates to the technical field of semiconductor processing equipment components, specifically disclosing a special metal chamfering wheel for semiconductor silicon carbide wafers and its processing technology. The special metal chamfering wheel for semiconductor silicon carbide wafers is mainly made of the following raw materials in weight percentages: 7-8% micron-sized diamond, 23-27% copper-tin powder, 60-65% cobalt powder, 2-3% silver powder, and 2-3% silicon nitride powder. This special metal chamfering wheel, through the interaction of the raw materials, has advantages such as high hardness, good thermal conductivity, excellent wear resistance, and high stability during the grinding process, outperforming traditional chamfering wheels and making it suitable for processing silicon carbide wafers.

This invention discloses a dual-effect concrete internal curing agent that combines shrinkage resistance and reinforcement, and its preparation method. Belonging to the field of building materials technology, the internal curing agent is composed of 100 parts phosphoric acid, 100 parts calcium hydroxide, 15-30 parts anionic or nonionic polyacrylamide, 20-30 parts sodium polyacrylate, 20-40 parts maleic anhydride (MA), 20-40 parts hydroxypropyl methylcellulose, 50 parts amorphous nano-silica particles with an average particle size of 20-50 nm, 5 parts defoamer, and 800 parts deionized water. In preparation, calcium hydroxide is first dissolved in water, then phosphoric acid is added and reacted at 60-80℃ until the pH value reaches 5.5-6.5. Then, nano-silica particles are added sequentially for dispersion, followed by HPMC and PAM, and stirring to obtain the final product. This invention effectively inhibits concrete shrinkage through the synergistic effect of organic polymers, inorganic minerals, and nanomaterials. The 60-day drying shrinkage rate is reduced by up to 77.25%, and the compressive strength is increased by 9.57%. As a water-based preparation, it can be directly incorporated into concrete and is suitable for natural curing in high-altitude and plateau regions.

This invention discloses a multi-element doped porous carbon and its preparation method, belonging to the technical field of porous carbon materials. The preparation method includes the following steps: S1, mixing phenol, 4-(2-epoxyethylenemethoxy)phenol, formaldehyde aqueous solution, and a catalyst to obtain a mixed solution; S2, ultrasonicating modified graphene oxide in anhydrous ethanol to obtain a modified graphene oxide solution; S3, adding the modified graphene oxide solution to the mixed solution, heating and reacting, then adding a curing agent, stirring, and after the reaction is complete, dehydrating, drying, grinding, and curing to obtain a modified graphene oxide / phenolic resin; S4, carbonizing the modified graphene oxide / phenolic resin to obtain a carbonized material; S5, activating the carbonized material to obtain multi-element doped porous carbon. This invention ultimately yields multi-element doped porous carbon with both high conductivity and abundant pseudocapacitive active sites.

This invention discloses a vacuum heat treatment equipment and method for ultra-high strength and toughness alloy steel, relating to the field of alloy steel heat treatment technology. It includes a support base and a temperature control unit, a vacuum pump, a vacuum pipe, a gas extraction interface, and a fixing frame mounted on the support base. A heat treatment component is fixedly connected to the upper surface of the temperature control unit, and a sealing moving component is installed on the upper surface of the heat treatment component. A graded quenching component is fixedly connected to the outer surface of the sealing moving component. A concave rolling roller and a U-shaped bar work together to solve the problem of uneven heat treatment of the workpiece. In existing equipment, the workpiece is fixedly placed, and its bottom forms a "thermal shadow zone" due to continuous contact with the support, resulting in delayed cooling, lower hardness, and coarser microstructure in this area. This invention uses a concave rolling roller with a grooved surface, allowing cylindrical workpieces to automatically roll to the center of the groove for precise positioning. Combined with the U-shaped bar, which drives the workpiece to reciprocate during heat treatment, it ensures the uniformity of the workpiece's circumferential properties.

This invention discloses halloysite-reinforced polyurethane sponge solar interfacial evaporation material and its preparation method, comprising the following steps: Step 1, pretreating halloysite to obtain pretreated halloysite nanotubes; Step 2, pretreating polyurethane sponge to obtain activated polyurethane sponge; Step 3, preparing a mixed dispersion by reacting dopamine hydrochloride with the pretreated halloysite nanotubes, immersing the activated polyurethane sponge in the mixed dispersion and magnetically stirring to induce a self-polymerization reaction of dopamine hydrochloride, followed by rinsing and drying to obtain the halloysite-reinforced polyurethane sponge solar interfacial evaporation material. The material obtained by this invention exhibits good bonding between halloysite and polyurethane sponge.

This invention relates to the technical field of temperature control in thin plate welding, and discloses a temperature gradient control system and method for thin plate welding. The control method, applied to a welding temperature gradient control device, specifically includes the following steps: S11: Obtaining the material, thickness, and geometric features of the target weld of the thin plate to be welded; loading a welding process parameter database based on the geometric features; the database includes recommended welding speeds, heat input power, and matching initial temperature gradient parameters for different plate thicknesses and materials. This invention achieves high-precision, real-time shaping of the spatial temperature gradient during thin plate welding by introducing independent closed-loop control of the core molten pool zone, heat-affected zone, and peripheral low-temperature zone, combined with dynamic fusion calibration of multi-source temperature data. Simultaneously, the feedforward-feedback composite control welding robot, deeply coupled with the welding path, can predictively adjust the temperature field, ensuring gradient stability throughout the entire welding path.

The application provides a high-toughness (alpha+beta) dual-phase magnesium-lithium alloy rod and a preparation method thereof, and contains, in percentage by mass, Li: 8-11%, Al: 2-6%, Sn: 1-5%, rare earth elements (RE): 0.5-4%, Ca: 0-1%, Mn: 0-1%, Ag: 0-0.5%, and the balance of magnesium and inevitable impurities, wherein the total amount of the impurities in the magnesium-lithium alloy material is less than 0.1 wt.%. The processing procedure comprises vacuum melting to prepare an ingot, homogenization annealing, upsetting-extruding pre-deformation, blank straightening and cutting, multi-pass upsetting-drawing forming, low-temperature aging treatment, and mechanical processing of the rod. The application adopts a method combining multiple plastic deformations for the (alpha+beta) dual-phase magnesium-lithium alloy, promotes grain organization refinement and uniform distribution of strengthening phases, significantly improves the organization uniformity and mechanical properties, and finally prepares the high-toughness (alpha+beta) dual-phase magnesium-lithium alloy rod, with a rod diameter of greater than or equal to 200 mm, a room-temperature tensile strength of greater than or equal to 330 Mpa, and an elongation of greater than or equal to 10%.

This invention relates to a high-performance polymer-cement-based composite repair material and its preparation method. The high-performance polymer-cement-based composite repair material, by mass fraction, comprises the following components: 690-710 parts cement; 130-150 parts fly ash; 45-55 parts silica fume; 200-210 parts mixing water; 950-1050 parts fine aggregate; 21-23 parts modified polymer; 9-10 parts expansion agent; 4-5 parts water-reducing agent; 5-6 parts modified fiber; and 0.16-0.18 parts defoamer. This invention utilizes nano-toughened modified polymer and modified fiber. The nano-modified polymer improves the microstructure of the repair material, while the modified fiber limits shrinkage and enhances the crack resistance of the matrix. The synergistic effect of both effectively improves the toughness and mechanical properties of the repair material, ensuring that early cracking does not occur.

This invention provides an autoclaved aerated concrete (AAC) block and method for preparing it using phosphogypsum and glass powder. It belongs to the field of bulk solid waste resource utilization technology. It is an AAC block and method that enables large-scale, high-value synergistic utilization of phosphogypsum and glass powder, overcoming the problem of high dependence on natural resources in existing technologies. The product prepared by this method not only realizes the resource utilization of solid waste, but also achieves breakthroughs in key physical properties, with comprehensive advantages of being lightweight, high-strength, and having excellent thermal insulation properties.

The application discloses a kind of concrete internal curing agent for high-temperature underground chamber and its preparation method, belong to concrete material technical field.The internal curing agent is composed of sealing film liquid and superabsorbent polymer, sealing film liquid is compounded by epoxy modified polyurethane emulsion, nano silicon dioxide, carboxyl-containing acrylate copolymer, temperature-sensitive polyether polyol and coupling agent in proportion, form the core-shell structure with sealing film liquid as shell, SAP as core, with good high-temperature resistance and alkali resistance.The internal curing agent does not affect the working performance of concrete, in the high-temperature environment of 30~90 DEG C, when the hydration process of cement causes the pH value of pore solution in concrete to rise, the temperature of concrete rises and internal water shortage occurs, sealing film gradually ruptures under the synergistic effect of high temperature and high alkali, releases the water stored by SAP, provides the required free water for the continuous hydration of cement in concrete, effectively improves the strength and durability of concrete under high-temperature conditions.

This invention provides a copper-core aluminum-clad composite wire and its preparation method, belonging to the field of metal composite wire preparation technology. The invention constructs a composite alloy interface between the copper core and the aluminum cladding layer, synergistically reinforced by functionalized carbon nanotubes. An acid-treated carbon nanotube, nickel powder as the bonding agent, and selenium powder with refined grains are made into a slurry and coated onto the copper core. Then, hydrostatic extrusion achieves a tight composite with the aluminum tube. In subsequent drawing and annealing processes, high temperature drives the in-situ reaction of nickel and aluminum to generate intermetallic compounds, while the carbon nanotubes form a relatively stable bond with them, thereby improving interface strength and inhibiting cracking. Finally, a copper-core aluminum-clad composite wire with good interfacial bonding, mechanical properties, and electrical conductivity is obtained.

The utility model belongs to raw material battery production technical field, concretely is a kind of device that increases fuel cell mould pressing plate raw material uniformity, including mix even inner tube and mix even outer tube, the interlayer space between mix even outer tube and mix even inner tube is filled with heating liquid, mix even inner tube is connected with vacuumizing device by filter assembly, the filter assembly includes dust cloth bag for filtering raw material, in the utility model, by filling into heating liquid between mix even outer tube and mix even inner tube interlayer space, for heating the raw material in mix even inner tube, the mobility of raw material in mix even inner tube can be improved by heating raw material, it is favorable to improve the effect of mixing, the structural performance of raw material can be improved, reduce the agglomeration phenomenon, mix even inner tube is connected with vacuumizing device by filter assembly, prevent raw material oxidation, improve the purity of raw material, it is favorable to optimize the microstructure of raw material.

The application relates to the technical field of alloy coating materials, and particularly discloses a high-pressure hot-pressing die oxidation-resistant coating and a preparation method thereof. The high-pressure hot-pressing die oxidation-resistant coating comprises a transition layer and a functional layer arranged outward from a die base body, the transition layer is a TiN-SiC gradient composite layer, the functional layer takes Al2O3-NiCrAlY as a base body, and is compounded and doped with double-modified nano ZrB2 and rare earth CeO2; the double-modified nano ZrB2 is ZrB2 particles coated with a silane coupling agent KH-560 and a NiCr alloy. The high-pressure hot-pressing die oxidation-resistant coating has oxidation resistance and wear resistance, and effectively enhances the high-temperature hardness stability and wear resistance of the oxidation-resistant coating.

This invention belongs to the field of magnetic functional materials technology, specifically relating to an amorphous nanocrystalline ribbon and its preparation method. The amorphous nanocrystalline ribbon is composed of the following raw materials in the indicated mass percentages: Nb 5.6-6.5 wt%, Si 9.5-10.5 wt%, B 1-2 wt%, Cu 0.5-1 wt%, Co 0.1-0.2 wt%, Zr 0.05-0.1 wt%, rare earth elements 0.4-1.5 wt%, high-entropy oxide 0.5-1.0 wt%, with the balance being Fe. The high-entropy oxide is prepared by adding ferric chloride, cobalt chloride, nickel chloride, manganese chloride, and scandium chloride to diethylene glycol, heating and stirring under sealed conditions, followed by centrifugation, washing, drying, and calcination to obtain the high-entropy oxide. The amorphous nanocrystalline ribbon prepared by this invention exhibits high magnetic permeability, low coercivity, and high stability within the temperature range of -40℃ to +150℃.

The invention discloses automatic positioning electric arc welding equipment for H-shaped steel machining, and relates to the technical field of metal machining, the automatic positioning electric arc welding equipment comprises a foundation bottom plate, a workbench is arranged on the upper surface of the foundation bottom plate, side sliding frames are arranged on the surfaces of the two sides of the foundation bottom plate, electric driving vehicles are arranged in the side sliding frames, and sliding frame bodies are arranged on the upper surfaces of the electric driving vehicles; a center sliding table is arranged at the center of the sliding frame body, an auxiliary mechanism is further arranged on the upper surface of the foundation bottom plate and comprises a bearing assembly and an adjusting assembly, the adjusting assembly comprises two water conveying pipelines, the two water conveying pipelines are arranged on the side surfaces of the two welding gun lifting bases correspondingly, and the bearing assembly comprises a clamping component; the clamping component comprises two clamping side plates, and in the scheme, the auxiliary mechanism is arranged, so that online self-adaptive compensation of H-shaped steel welding seam assembly errors is achieved, and the welding precision, the quality consistency and the production efficiency are remarkably improved.

This invention discloses a method for preparing hazelnut oil-based oleogel food material, comprising the following steps: (1) Oil extraction: Hazelnuts are soaked overnight, ground with cell wall breaking, stirred under alkaline conditions, filtered, centrifuged, and the cream layer is collected to obtain hazelnut oil. The hazelnut oil is then diluted under acidic conditions to obtain a hazelnut oil suspension; (2) Emulsion template preparation: The gelling agent hydrogel system is stirred in a water bath, and the hazelnut oil suspension and gelling agent are dispersed and sheared. The mixture is adjusted to acidic conditions and refrigerated overnight to prepare a hazelnut oil emulsion gel; (3) Hazelnut oil-based oleogel preparation: The hazelnut oil emulsion gel is freeze-dried, dispersed, sheared, and stirred to obtain a hazelnut oil-based oleogel. This invention breaks through the limitations of existing natural plant oil and oleogel delivery carrier technologies, constructs a hazelnut oil-based oleogel model, and provides a scientific theory and technical method for studying oleogel delivery systems using multifunctional high-internal-phase plant oils.

This invention relates to the field of concrete reinforcing fiber technology, and particularly to a bamboo powder-reinforced polypropylene composite fiber for concrete crack resistance and its preparation method. Through an integrated process of surface chemical modification (introducing bifunctional groups), melt grafting (forming chemical anchoring), and multi-stage stretching (forming a rough structure in situ), the strong interfacial bond between bamboo powder and polypropylene and the simultaneous construction of fiber surface functions are fundamentally achieved. This method not only solves the global problem of bamboo powder easily detaching from the polymer matrix, but also ensures good rheological properties of the melt due to the minimal damage to the polypropylene backbone caused by chemical grafting. This makes it possible to subsequently prepare fine denier fibers (with diameters as low as 30 μm) through high-ratio multi-stage stretching, overcoming the technical bottleneck of traditional modification methods that struggle to balance strong interfacial bonding and high spinnability.

The invention belongs to the technical field of carbon steel surface modification and corrosion protection, and particularly relates to a preparation method of carbon steel surface high-corrosion-resistance electroplated copper. In order to solve the problems that an existing cyanide-free copper plating process is poor in activation, a matrix is prone to damage, and the plating layer binding force and corrosion resistance are insufficient, the four-step process of matrix pretreatment, anode electrolytic activation, cyanide-free citric acid system electrochemical copper plating and high-temperature curing is adopted, and sodium nitrate and sodium chloride mixed electrolyte is used for low-current-density mild activation; and in cooperation with a copper plating solution with specific components and curing at 132-148 DEG C, a plating layer is compact and free of holes, and interface bonding is tight. The method has the advantages of being environmentally friendly, non-toxic, simple and controllable in technological process and the like, the thickness of the obtained copper plating layer is 15-30 microns, the corrosion resistance of the obtained copper plating layer in an alkaline environment is improved by 1.6-3.0 times compared with a traditional copper plating layer, the corrosion rate of the obtained copper plating layer in an alkaline medium is smaller than or equal to 0.06 mm / year, and the corrosion resistance of the obtained copper plating layer is remarkably improved compared with a traditional technology.