31 results about "Zinc based alloy" patented technology

A high-performance near-pure zinc alloy, a preparation method therefor and a use thereof, relating to the technical field of zinc alloys. The alloy component is that the content of Zn is greater than or equal to 99.5%, and the remaining trace alloy elements include at least two of the following 14 elements: Mg, Mn, Li, Cu, Ag, Ca, Sr, Fe, Zr, Ti, Al, C, Ga, and Si. The alloy has the yield strength ≥ 250 MPa, the tensile strength ≥ 320 MPa, the elongation ≥ 25%, the mechanical property change during one year of room-temperature storage ≤ 5%, the maximum bending force ≥ 2 kN, the stress corrosion sensitivity factor ≤ 15%, the size of corrosion pits after 60 days of immersion ≤ 15 μm, and the standard deviation of the size of corrosion pits ≤ 3 μm. The alloy is suitable for the preparation of biodegradable stents, bone implant devices, medical staplers or anastomotic nails for intestines, blood vessels or nerves, vascular clamps, guided bone or tissue regeneration membranes, heart valve protheses, dura mater repair membranes, soluble bridge plugs and fracturing balls for oil drilling, zinc alloy die castings, electroplated zinc materials, building zinc materials, battery-grade zinc, printing-grade zinc, and zinc-based brazing alloys.

The invention relates to the technical field of zinc-based material powder additive manufacturing, in particular to a zinc-based material powder additive manufacturing system and a manufacturing method thereof.The zinc-based material powder additive manufacturing method comprises the following steps that zinc-based alloy powder is obtained and subjected to surface activating treatment through plasma jet; determining cold spraying process parameters based on the oxygen content of the activated powder; cold spraying-laser composite deposition is executed, and compact green bodies are formed on the substrate layer by layer; and the metallurgical bonding state between deposits is determined, and selective laser remelting is triggered to eliminate interface defects. According to the method, a composite oxide layer is generated on the surface of the powder through Ar-mixed gas and plasma jet treatment with the power of 8-12 kW, excessive oxidation can be prevented, the powder activity can be improved, and a good foundation is laid for subsequent spraying deposition.

The invention belongs to the technical field of gas adsorbents, and particularly discloses a high-strength nano-hybrid soluble bridge plug as well as a preparation method and application thereof. The bridge plug body comprises a hollow metal tube, and a plurality of annular grooves are formed in the outer surface of the hollow metal tube around the axis of the hollow metal tube; the carbon nitride film middle layer is located on the outer surface of the bridge plug body; the outermost layer of the polybenzimidazole / nano silicon oxide composite film is positioned on the outer surface of the middle layer of the carbon nitride film; the hollow metal tube is made of zinc-based alloy and comprises, by mass, 5%-7% of titanium, 2%-4% of magnesium, 0.5%-2% of bismuth and the balance zinc. The bridge plug disclosed by the invention is high in plugging strength, controllable in dissolution time and suitable for a high-temperature and high-salt or acid environment, the particle size of residues after dissolution is small, the harsh requirements of ultra-deep well fracturing can be met, and the bridge plug is prepared by adopting a one-step forming process, so that the production cost is remarkably reduced.

The method relates to a press-hardened component with a tensile strength Rm>1600 MPa, in particular >1800 MPa, and especially >2000 MPa, wherein the component is manufactured from a steel material, wherein the steel material is a boron-manganese steel, which has a carbon content >0.30 mass %, wherein the steel material is hot rolled or hot rolled and cold rolled to a strip with a thickness of 0.5 to 3 mm, wherein the strip has a thin coating of zinc or a zinc-based alloy and a coating weight of <50 g / m2 on each strip side of the steel strip.

The utility model provides a cutting device for zinc-based alloy accessory production, which relates to the technical field of zinc-based alloy accessory production and processing, and comprises an operating table, a cutting component is arranged on one side of the surface of the operating table, a clamping component is arranged at the center of the surface of the operating table, and the clamping component comprises a screw groove. A two-way screw rod is inserted into the screw rod groove, one end of the two-way screw rod is connected with a motor, and the other end of the two-way screw rod is connected with a bearing. According to the cutting device for the zinc-based alloy accessory, when the zinc-based alloy accessory needs to be cut, the two-way screw rod can be driven to rotate through the motor firstly, so that the two sets of clamping plates push the protective pads to move towards the inner side at the same time and clamp and fix the zinc-based alloy accessory; the problem that in an existing clamping mode, fixing is conducted through a spring, vibration is generated in the cutting process, and then the workpiece is loosened or falls off is solved.

An alloy anode for a seawater based aqueous battery and a universal strategy for preparing anodes for use in seawater based aqueous batteries. Zn-M alloys (where M can be manganese or other transition metal) were prepared by co-electrodeposition in the presence of hydrogen bubble formation to produce a porous nanostructured alloy that can serve as an anode for a seawater based aqueous battery. Exemplary Zn—Mn alloy anodes achieved stability over thousands of cycles even under harsh electrochemical conditions, including testing in seawater-based aqueous electrolytes and using a high current density of 80 mA cm−2. The anode design strategy allows for the production of durable electrodes for aqueous batteries and other applications.

The invention discloses a zinc alloy stent as well as a preparation method and application thereof. The zinc alloy bracket comprises a zinc-based alloy matrix and a coating arranged on the zinc-based alloy matrix, the coating comprises a zinc layer and a poly-racemic lactic acid coating containing an active drug. According to the zinc alloy stent, the pure zinc layer and the poly-racemic lactic acid coating containing the active medicine are arranged on the zinc-based alloy matrix, so that the early-stage degradation speed of an early-stage zinc alloy implant is slowed down, the number of degradation products is controlled, stimulation of the degradation products to blood vessels is reduced, the probability of occurrence of thrombosis and restenosis in the early-stage and middle-stage is reduced, and the stent has a good application prospect. And the early mechanical property and biocompatibility of the instrument are ensured.

This invention relates to the field of metal matrix composite material preparation technology, specifically to a zinc-based alloy composite material and its preparation method, particularly applicable to the field of biodegradable biomedical implant materials. The zinc-based alloy composite material comprises a zinc alloy matrix and nano-reinforcing particles. The zinc alloy matrix is ​​composed of Zn, Cu, and Li; wherein the mass percentage of Cu in the zinc alloy matrix is ​​1-2 wt%, and the mass percentage of Li in the zinc alloy matrix is ​​0.1-0.9 wt%; the volume percentage of the nano-reinforcing particles in the zinc alloy matrix is ​​<2.5 vol%; the particle size of the nano-reinforcing particles is <100 nm, and the nano-reinforcing particles are uniformly dispersed in the zinc alloy matrix. The invention also relates to the preparation and application of the above-mentioned zinc-based alloy composite material. This invention solves the problems of unstable microstructure and difficulty in balancing strength and ductility in existing zinc-copper-lithium alloys, thus improving the mechanical properties of the zinc-copper-lithium alloy system.

A Sn-Zn based-alloy plated steel material includes: a steel material; a first alloy layer mainly composed of Fe, Cr, and Ni on a surface of the steel material; a second alloy layer mainly composed of Sn, Fe, Ni, and Zn on the first alloy layer; and a Sn-Zn-based plating layer mainly composed of Sn and Zn on the second alloy layer, in which a surface coverage of the first alloy layer on the surface of the steel material is 70% or more, the second alloy layer is an alloy layer mainly composed of at least one of a FeSn2 phase and a Fe3Zn10 phase partially substituted with Ni, the Sn-Zn-based plating layer contains, by mass%, 1.0 to 15.0% of Zn with a balance being Sn and impurities, and a total adhesion amount of the first alloy layer, the second alloy layer, and the Sn-Zn-based plating layer is 5 to 80 g / m2 per one surface.

The invention relates to a medical degradable metal zinc alloy, and a manufacturing method and application thereof. The manufacturing method comprises the following steps: selecting a zinc-based alloy powder material and a binder; laying a layer of the powder material on a substrate of a printing platform, and selectively spraying the binder on the surface of a powder layer formed by the powder material according to the constructed model so as to solidify the section pattern of the constructed model; then the printing platform descends by the thickness of one powder layer, then a layer of powder material is laid, and the process is repeated until the constructed model is printed; after printing is completed, the whole base plate bearing the printing model is taken down and put into a vacuum oven, heat preservation is conducted for a certain time so as to strengthen the curing strength of the binder, redundant powder is removed after curing is completed, and a green body is obtained; and the green body is degreased and sintered, and the medical degradable metal zinc alloy is obtained. The medical degradable metal zinc alloy prepared by binder spraying additive manufacturing has certain mechanical properties, also has proper degradation rate and good biocompatibility, and is expected to be further applied to clinical orthopedics and intravascular stent implantation.

The application relates to the field of steel smelting, in particular to a zinc-based alloy plated hot stamping forming steel and a preparation method thereof. The method comprises the following steps: smelting and continuous casting of a steel raw material to obtain a slab; thin slab continuous casting and rolling production line treatment of the slab to obtain a strip steel; pickling of the strip steel, then continuous annealing and hot dip galvanizing to obtain a zinc-based alloy plated steel coil; hot stamping forming of the plated steel coil to obtain the zinc-based alloy plated hot stamping forming steel; the zinc-based alloy plated hot stamping forming steel comprises a hot stamping forming base plate and a zinc-based alloy plating layer; the chemical components of the base plate comprise C, Si, Al, Mn, Cr, Mo, B, S, P, N, O, first additive elements, second additive elements, and the rest are Fe and inevitable inclusions; the chemical components of the plating layer comprise Al, Mg, Si, and the rest are Zn and inevitable impurities; the thin slab continuous casting and rolling production line treatment is introduced into the preparation of the hot stamping forming steel, so that the length of the whole production line process is effectively shortened.

An electrochemical element comprising: - an aqueous electrolyte with a pH less than 7 containing Zn2+ and Mn2+ ions, - a negative electrode comprising zinc or a zinc-based alloy, - a positive electrode comprising manganese dioxide, a first carbon black with a specific surface area S1, and a second carbon black with a specific surface area S2, with S2 / S1 ≥ 2. Abbreviated figure: Figure 1

The present invention relates to the technical field of waste gas treatment, and particularly to an acid mist waste gas treatment system for a zinc-based alloy production process. The acid mist waste gas treatment system includes a gas collection system, a separation system and a spray system. Through the top suction and start-stop side suction structures of the gas collection system, the suction air flow velocity is synchronously tested, the power ratio between the side suction port and the top suction port is analyzed, and the suction power of the two suction ports of the gas collection system is distributed. After being transmitted to the separation system, the gradient temperature separation structure is used to further separate and settle aerosol particles, and finally the gas is neutralized and treated through the spray system. The present invention collects gas through the double suction ports of top suction and side suction, analyzes the influence of different suction ports on the mixed precipitation of aerosol particles to determine the optimal power distribution, and the collected gas is transmitted to the separation system for separation through the gradient inversion layer structure, improving the sedimentation efficiency of aerosol particles and ensuring the high efficiency and reliability of waste gas treatment.

The invention relates to the technical field of waste gas treatment, in particular to an acid mist waste gas treatment system for a zinc-based alloy production process. The acid mist waste gas treatment system comprises a gas collection system, a separation system and a spraying system, a top suction structure and a start-stop side suction structure of the gas collection system are used for synchronously testing the suction flow rate, analyzing the power ratio of a side suction port to a top suction port, distributing the suction power of the two suction ports of the gas collection system, and transmitting the suction power to the separation system; and the aerosol particles are further separated and settled by using a gradient temperature separation structure, and finally the gas is neutralized by a spraying system. Gas is collected through double suction ports of top suction and side suction, the influence of different suction ports on mixed precipitation of aerosol particles is analyzed to determine optimal power distribution, the collected gas is transmitted to a separation system and is separated through a gradient thermal inversion layer structure, the sedimentation efficiency of the aerosol particles is improved, and efficient and reliable waste gas treatment is guaranteed.

The application discloses a preparation method of a degradable zinc alloy material, and belongs to the technical field of biological metal materials. The preparation method comprises the following steps: melting and heat-insulating zinc blocks, ZnMg50 metal blocks, Ag metal blocks and Ti metal blocks; then pouring into a casting mold and directly solidifying; and finally rolling in multiple passes. The chemical composition and content of the degradable zinc alloy material are as follows: 0.05-2wt% of Mg, 1-3wt% of Ag, 0.1-0.4% of Ti, and the balance of Zn. The application can control the types, quantities and distributions of intermetallic compounds Mg2Zn 11 , TiZn 16 phases and elemental Ag by regulating alloy components, contents and preparation methods, so that the zinc-based alloy with good mechanical properties, a suitable biodegradation rate and good antibacterial performance can be prepared and can be used for manufacturing different biological medical materials, such as vascular stents, orthopedic implants and surgical sutures.

The invention relates to the technical field of zinc casting systems for zinc hydrometallurgy, and discloses an integration method of a multipurpose zinc production line, which is characterized in that a zinc ingot production line and a zinc-based alloy production line are integrated and share one set of core zinc melting and slagging-off system, and then qualified zinc liquid is shunted to different heat preservation and casting procedures according to product requirements. Automatic equipment and centralized PLC control are adopted, and automation and collaborative operation of the whole process from feeding, melting, slagging-off to zinc scooping and casting are achieved. Zinc ingot and zinc-based alloy production lines are integrated into one zinc melting system in a one-to-two mode, on the basis that independent operation and non-interference of the two lines are guaranteed, repeated equipment investment and process points are remarkably reduced, the production line utilization rate and production flexibility are improved, and the multi-variety and small-batch market requirements are met.

This invention relates to a medical biodegradable zinc alloy, its manufacturing method, and its applications. The method involves selecting zinc-based alloy powder materials and a binder. A layer of the powder material is deposited on a substrate of a printing platform. Based on the constructed model, the binder is selectively sprayed onto the surface of the powder layer to solidify the cross-sectional pattern of the constructed model. The printing platform then descends by the thickness of one powder layer, and another layer of powder material is deposited. This process is repeated until the constructed model is printed. After printing, the entire substrate supporting the printed model is removed and placed in a vacuum oven for a certain time to enhance the curing strength of the binder. After curing, excess powder is removed to obtain a green blank. The green blank is then degreased and sintered to obtain the medical biodegradable zinc alloy. The medical biodegradable zinc alloy prepared by binder spray additive manufacturing possesses certain mechanical properties, along with an appropriate degradation rate and good biocompatibility, and is expected to be further applied in clinical orthopedic and vascular stent implantation.

The invention relates to the technical field of zinc-based alloy part production, in particular to a stripping device for zinc-based alloy part production, which comprises a die casting machine, a mechanical gripper is arranged beside the die casting machine, a conveying table is arranged beside the die casting machine, a conveying belt is wound on the conveying table, a bottom plate is arranged beside the conveying table, and the bottom plate is connected with the mechanical gripper. A first multi-section electric push rod is fixed to the bottom plate, a connecting piece is fixed to the telescopic end of the first multi-section electric push rod, a first guide rail is fixed to the connecting piece, clamping pieces are symmetrically connected to the first guide rail in a sliding mode, force storage springs are fixedly connected between the clamping pieces and the connecting piece, and a fixing piece is fixed to the conveying table. The fixing piece is connected with a first wedge-shaped block in a sliding mode, and the first wedge-shaped block is matched with the clamping piece in an extrusion mode. According to the casting stripping device, the clamping piece is arranged to clamp a casting, people can strip the needed part on the casting conveniently, the height limiting beam is arranged to block the casting on the conveying belt, and the casting is prevented from sliding down from the conveying belt.

A plated steel material comprising a metal coating layer disposed on the surface of a steel material is used. In the metal coating layer, a lower alloy layer containing 22.5% or more of Fe, an intermediate alloy layer containing 20.0% or more of Fe and 0.5-10.0% of Ni, and an upper plating layer comprising a Zn-based alloy containing 0-5.0% of Fe are disposed in this order from the steel material side, the thickness of the lower alloy layer being 5 μm or more, the thickness of the intermediate alloy layer being 1.0 μm or more, and the total thickness thereof being 6 μm or more. The lower alloy layer comprises Zn: 5.0-30.0%, Al: 30.0-55.0%, Fe: 22.5-50.0%, Si: 0-10.0%, Ni: 0% to less than 0.5%, Mg: 0-1.0%, and the balance: impurities; and the intermediate alloy layer comprises Zn: 5.0-35.0%, Al: 25.0-60.0%, Fe: 20.0-45.0%, Si: 0-10.0%, Ni: 0.5-10.0%, Mg: 0-1.0%, and the balance: impurities.

The application relates to a preparation method of a doped modified element zinc-based alloy sputtering target for semiconductor coating, and belongs to the field of metal sputtering target material preparation. The preparation method comprises the steps of material preparation, alloying smelting, centrifugal casting forming, synchronous water-cooling rapid solidification and surface machining. Through inert gas flow protection smelting, high-frequency induction heating, immersion feeding, rotating blade uniform stirring, pressure-filled centrifugal casting, synchronous water-cooling rapid solidification and surface machining, the target material with different specifications and sizes such as circular, rectangular and special-shaped can be prepared. The preparation method can solve the problem that it is difficult to dope the zinc-based sputtering target with active metal elements, obtain an alloy with a high content of doped elements, and prepare the target material with the advantages of uniform internal element distribution, small grain size, few volume defects and the like, effectively reduce the machining workload of the target material, and have the advantages of fast production efficiency, high product yield and low cost.

The invention belongs to the technical field of zinc alloys, and particularly relates to a biodegradable zinc-based alloy wire for manufacturing an anastomosis nail and a preparation method of the biodegradable zinc-based alloy wire. Aiming at the problem of how to provide a medical degradable zinc alloy material in the prior art, the invention provides the biodegradable zinc-based alloy wire for manufacturing the anastomosis nail and the preparation method of the biodegradable zinc-based alloy wire, the biodegradable zinc-based alloy wire comprises a zinc element and a lithium element, the mass fraction of the lithium element is 0.3-0.5%, and the balance is the zinc element. Due to the fact that the pure zinc material is soft in texture and cannot meet the requirement for the material strength in the medical process, the zinc-lithium alloy is formed by only adding a small amount of the metal element lithium, the zinc-lithium alloy has good tensile strength through the specific processing technology, the requirement for the material strength in the medical process can be met, and the service life of the material is prolonged. And meanwhile, the alloy components are relatively simple, so that the negative influence on the human body in the degradation process of the alloy material can be reduced as much as possible.

The invention discloses a wear-resistant zinc-based alloy bearing bush and an ultrasonic casting method thereof and belongs to the field of alloy bearing bushes. The wear-resistant zinc-based alloy bearing bush comprises the following components in percentage by weight: 28%-32% of Al, 1%-2.5% of Cu, 0.01%-0.03% of Co, 0.01%-0.03% of Er, 0.02%-0.05% of Ti, less than or equal to 0.01% of Fe and the balance of Zn, and the total content of impurities is less than 0.1%. In the smelting process, Co, Er and Ti elements are added to carry out microalloying treatment on the alloy, and the high-temperature service performance of the alloy can be remarkably improved. According to the wear-resistant zinc-based alloy bearing bush and the preparation method thereof, through specific alloy component design and combination of burdening, smelting and ultrasonic casting processes, the prepared wear-resistant zinc-based alloy bearing bush has high toughness and high wear resistance, meanwhile, the strength, hardness and high-temperature strength of the wear-resistant zinc-based alloy bearing bush are effectively improved, finally, comprehensive optimization of the comprehensive mechanical property of the bearing bush is achieved, and the use requirement in a higher-temperature environment is met.

The invention relates to an electrochemical element comprising: - an aqueous electrolyte having a pH of less than 7 and containing Zn2+ and Mn2+ ions, - a negative electrode comprising zinc or a zinc-based alloy, - a positive electrode comprising manganese dioxide, a first carbon black having a specific surface area S1 and a second carbon black having a specific surface area S2, where S2 / S1≥2.

The invention discloses a slag removal device for zinc-based alloy production, and relates to the related technical field of zinc-based alloy production, the slag removal device comprises a supporting mechanism and a slag removal hopper mounted on the supporting mechanism, and the slag removal hopper is rotatably mounted at the end part of a mounting frame in the supporting mechanism. Through the special design of the slag removal hopper and the cooperative work of the position adjusting mechanism and the driving mechanism, the slag removal hopper can quickly and accurately reach the surface of alloy liquid in the material melting furnace to carry out slag salvaging operation, and compared with a traditional manual slag salvaging mode, the slag salvaging frequency is greatly reduced, the slag removal efficiency is improved, and the production time is saved; manual slag salvaging is replaced by mechanical operation, an operator only needs to control equipment such as a motor and a lifting cylinder, heavy physical labor is not needed, the labor intensity of the operator is reduced, and the working environment is improved; due to the design of the pipe penetrating holes in the slag removal hopper, alloy liquid can flow back into the material melting furnace in the slag salvaging process, alloy waste is effectively reduced, the production cost is reduced, and the economic benefits of enterprises are improved.

The application belongs to the technical field of gas adsorbents, and specifically discloses a high-strength nanometer hybrid dissolvable bridge plug as well as a preparation method and application thereof. The high-strength nanometer hybrid dissolvable bridge plug comprises a bridge plug body, a carbon nitride film intermediate layer and a polybenzimidazole and nanometer silicon oxide composite film outermost layer. The bridge plug body comprises a hollow metal tube, and a plurality of annular grooves are formed on the outer surface of the hollow metal tube and surround the axis of the hollow metal tube. The carbon nitride film intermediate layer is located on the outer surface of the bridge plug body. The polybenzimidazole and nanometer silicon oxide composite film outermost layer is located on the outer surface of the carbon nitride film intermediate layer. The material of the hollow metal tube is a zinc-based alloy, which is composed of the following components in percentage by mass: titanium 5-7%, magnesium 2-4%, bismuth 0.5-2%, and the balance being zinc. The bridge plug has high plugging strength, controllable dissolving time, and is suitable for high-temperature high-salt or acidic environments. After dissolving, the particle size of the residue is small, which can meet the harsh requirements of ultra-deep well fracturing. Moreover, the bridge plug is prepared by using a one-step forming process, which significantly reduces the production cost.

The present application relates to a kind of zinc-based composite material and its preparation method, belong to zinc-based alloy technical field.The zinc-based composite material of the present application includes zinc-based alloy matrix and Si particle, graphite particle dispersed in zinc-based alloy matrix;Si particle, graphite particle accounts for the mass percentage of zinc-based composite material in turn is 5~7.5%, 5~8%;Zinc-based alloy matrix is mainly by with zinc, aluminium, copper, magnesium and titanium composition.The zinc-based composite material of the present application, hard silicon particle and soft graphite particle are dispersed in zinc-based alloy matrix, utilize the low expansion characteristics of silicon and graphite and the synergistic interaction strengthening and friction-reducing wear resistance effect of silicon Si particle and graphite particle to zinc-based alloy matrix, so that zinc-based composite material has excellent low expansion dimensional stability and low friction stability, anti occlusion and anti scratch resistance.

The invention relates to a method for preparing a rare earth zinc-based alloy based on a fused salt electro-deoxidation technology. The method comprises the following steps: S1, providing a solidified body taking a mixture of rare earth oxide and zinc oxide as a matrix; s2, preparing a cathode for testing and a cathode for electrolysis by utilizing the solidified body; and S3, a three-electrode system with mixed chloride fused salt of CaCl2 and NaCl as electrolyte is constructed, the cathode for testing serves as a working electrode, electrochemical behavior analysis is conducted through cyclic voltammetry testing to determine the reduction potential, then the cathode for electrolysis serves as a working electrode, preparation of the rare earth zinc-based alloy is completed through constant-potential electrolysis under the determined reduction potential, and the rare earth zinc-based alloy is obtained. Wherein the test temperature and the electrolysis temperature are respectively controlled at 500-750 DEG C. According to the method, the mixed system of the rare earth oxide and the zinc oxide is directly subjected to electrolytic reduction and alloying through an electrochemical means, complex raw material pretreatment or product post-purification steps are not needed, and operation is easy, convenient and efficient.

This invention relates to a method for preparing a zinc-based alloy, comprising the following steps: Step S1, weighing various metal powders, including zinc, copper, and X, wherein X is at least one of tin, aluminum, and titanium, by weight percentage; mixing the metal powders uniformly under vacuum or a protective gas atmosphere to obtain a mixture; Step S2, ball milling the mixture under vacuum or a protective gas atmosphere to achieve pre-alloying; Step S3, transferring the pre-alloyed mixture into the interior of a reaction vessel, evacuating the interior of the reaction vessel to maintain a vacuum level not exceeding 60 Pa, then subjecting the mixture in the reaction vessel to high-pressure sintering, and finally allowing it to cool naturally to room temperature to obtain the zinc-based alloy. This invention also relates to the application of this zinc-based alloy in zinc-based battery current collectors.

A coated checkered steel sheet including: a substrate checkered steel sheet having convex parts with a height of 3.0 mm or less and flat parts on one sheet surface; a coating layer that includes a zinc-based alloy layer that is arranged on the sheet surface of the substrate checkered steel sheet having the convex parts and the flat parts; and a chemical treatment coating film layer provided on a surface of the coating layer; in which a coating thickness of the chemical treatment coating film layer on the flat parts of the substrate checkered steel sheet is from 0.10 to 5.00 μm on one surface, and a coating thickness ratio of the chemical treatment coating film layer between the flat parts and the convex parts of the substrate checkered steel sheet (thickness of the chemical treatment coating film layer on the flat parts / thickness of the chemical treatment coating film layer on the convex parts) is from 0.2 to 5.0.

The invention relates to a method for enhancing the mechanics of a biomedical zinc-based alloy through a barb-shaped eutectic structure, and belongs to the field of biomedical material manufacturing. The barb-shaped eutectic structure reinforced biomedical zinc-based alloy is composed of zinc powder, aluminum powder (5 wt.%) and tin powder, and the mass percentage of the tin powder is 0.5-3.6 wt.%. The mixture of the zinc powder, the aluminum powder and the tin powder is subjected to mechanical mixing and ball-milling dispersion and then is sintered and formed by electric sparks. The preparation method has the beneficial effects that the barb-shaped eutectic structure is generated, a multi-angle contact surface can be formed between the barb-shaped eutectic structure and the grain boundary of each grain, and more acting points are formed on the surface of the grain boundary, so that the capability of resisting deformation of different degrees is greatly improved, and the mechanical property of the biomedical zinc-based alloy is improved.