85 results about "Ternary alloy" patented technology

The invention discloses a preparation process of a high-performance Cu-Ni-Fe alloy calculated and designed based on a first principle, and relates to the technical field of alloy material preparation. According to the process, a precise Cu-Ni-Fe ternary alloy thermodynamic database is constructed by combining a first principle with a CALPHAD method, a multivariate phase diagram is calculated based on the database to determine a component range, then optimized components of a work function, an elastic constant and a thermal expansion coefficient are calculated through the first principle, and a finished product is obtained through smelting, heat treatment and forming machining. The final alloy is composed of, by atomic percent, 30%-75% of Cu, 10%-30% of Ni and 10%-30% of Fe, the tensile strength is larger than or equal to 816.4 MPa, the total elongation at break is larger than or equal to 34.27%, the thermal expansion coefficient is smaller than 20 * 10 <-6 > / K, the excellent mechanical property and thermal stability are achieved, the problems that component design is blind and performance fluctuation is large in a traditional process are solved, and the alloy is suitable for the fields of ocean engineering, electronic packaging and the like.

The invention discloses a high-strength and high-plasticity low-melting-point aluminum alloy brazing material and a preparation method and application thereof, and relates to the technical field of solder manufacturing. The low-melting-point aluminum alloy welding flux is prepared from the following components in percentage by weight: 10 to 14 percent of Si, 4 to 20 percent of Cu, 0.04 to 0.25 percent of Eu, 0.78 to 0.82 percent of Fe, 0.13 to 0.17 percent of Mn, 0.08 to 0.12 percent of Mg, 0.18 to 0.22 percent of Zn and the balance of aluminum and inevitable impurities. The Al-Si-Cu ternary alloy is constructed to form a low-melting-point eutectic phase, the melting point of the material is effectively reduced, meanwhile, Eu atoms are doped, the aluminum matrix is subjected to the pressure stress effect, the interplanar spacing is reduced, the grain size of the matrix aluminum phase is reduced, the elemental Si phase is refined, the eutectic Al-Si phase content is increased, and precipitation of the brittle Al2Cu phase is restrained; therefore, the aluminum alloy solder has high tensile strength and elongation after fracture under the condition that the melting point is low.

The invention relates to a preparation method of a PtGaGe alloy-loaded oxygen-doped carbon nanotube and application of the PtGaGe alloy-loaded oxygen-doped carbon nanotube in electro-catalytic oxygen reduction.The preparation method comprises the steps that firstly, the oxygen-doped carbon nanotube is prepared through a carboxylation method, and then platinum nitrate tetraammine, gallium nitrate and ammonium hexafluorogermanate are evenly mixed; the preparation method comprises the following steps: adding a PtGaGe alloy into an aqueous solution of an oxygen-doped carbon nanotube while continuously stirring, uniformly stirring at room temperature, freeze-drying, and roasting in a tubular furnace to finally realize successful loading of the PtGaGe alloy, thereby obtaining PtGaGe / OCNTs. As a novel preparation method, the trimetal alloy can be successfully prepared under the low-temperature condition, and the preparation method has the advantages of being simple in preparation process, mild in reaction condition, controllable in alloy variety and content and the like. According to the invention, the unique double p-d orbital hybridization characteristic in the ternary PtGaGe alloy is utilized, the electron structure of platinum is cooperatively regulated and controlled, the atom utilization rate and the catalytic efficiency of the ternary PtGaGe alloy are simultaneously improved, and the tradeoff relationship between activity and selectivity is successfully broken through.

The application discloses a Mo-Ni bimetallic denitration catalyst and a preparation method thereof, and relates to the technical field of denitration agents, and the preparation method comprises the following steps: firstly, a nickel source, a molybdenum source and an aluminum source are smelted and crushed to obtain a Ni-Mo-Al ternary alloy powder; then, the Ni-Mo-Al ternary alloy powder is added into a mixed alkaline leaching solution containing alkali metal hydroxide, a surfactant and hydrophobic conductive micro powder to perform a dealuminization reaction; hydrogen bubbles generated in-situ by the reaction are used as soft templates, and the hydrophobic conductive micro powder is adsorbed on the bubble interface and assembled in the skeleton through Pickering effect; finally, the catalyst is obtained through washing and drying; the catalyst prepared by the application has a large pore structure with conductive micro powder distributed on the inner wall; the unique structure not only reduces the mass transfer resistance, constructs an electron transmission channel, but also promotes the discharge of product nitrogen through a local hydrophobic environment, and significantly improves the catalytic activity and nitrogen selectivity when treating nitrate-containing wastewater.

The present application relates to the technical field of environmental catalytic materials, and particularly relates to a noble metal doped copper-based catalyst and a preparation method thereof.The composition of the catalyst comprises, in percentage by mass, CuO: 11-14%, Pd: 0.3-0.4%, Pt: 0.05-0.1%, MnO2: 11.2-13.2%, Fe2O3: 2-4%, CeO2: 4.7-7%, ZrO2: 3.3-5%, La2O3: 1.5-3%, BaO: 0.8-1.5%, SiO2: 2-4%, and gamma-Al2O3: the balance.The catalyst of the present application successfully constructs high-dispersed Pd-Pt-Cu ternary alloy active centers and super-oleophobic surfaces through precise cooperation of multiple components, and has excellent low-temperature catalytic activity, long-term stability and excellent resistance to oil poisoning, and is particularly suitable for efficient purification of complex oil-containing waste gas such as kitchen fume.

The invention discloses a bismuth-antimony-tin alloy negative electrode material of a potassium ion battery and a preparation method of the bismuth-antimony-tin alloy negative electrode material, and belongs to the technical field of new energy. The preparation method comprises the following steps: firstly, obtaining bismuth-antimony-tin alloy precursor powder by adopting an oil bath evaporation drying method, then putting the bismuth-antimony-tin alloy precursor powder into a tubular furnace, carrying out heat treatment under a protective atmosphere, and washing and drying to obtain the bismuth-antimony-tin-carbon composite material. The middle entropy property of the ternary alloy enables the structural stability of the material to be improved, three-dimensional carbon coating can relieve volume expansion of alloy particles in the circulation process, and the circulation stability of the composite material is improved.

The invention discloses a Mo-Ni bimetallic denitration catalyst and a preparation method thereof, and relates to the technical field of denitration agents, the preparation method comprises the following steps: firstly, smelting and crushing a nickel source, a molybdenum source and an aluminum source to obtain Ni-Mo-Al ternary alloy powder; then adding into a mixed alkaline leaching solution containing alkali metal hydroxide, a surfactant and hydrophobic conductive micro powder to carry out dealumination reaction; hydrogen bubbles generated in situ in a reaction are used as a soft template, and hydrophobic conductive micro powder is adsorbed on a bubble interface and assembled in a skeleton through a Pickering effect; and finally washing and drying to obtain the catalyst. The prepared catalyst has a macroporous structure with conductive micro powder distributed on the inner wall, the unique structure not only reduces mass transfer resistance and constructs an electron transport channel, but also promotes discharge of a product nitrogen through a local hydrophobic environment, and the catalytic activity and nitrogen selectivity during treatment of nitrate-containing wastewater are remarkably improved.

The application discloses a shaping die and a preparation method of a shape memory alloy spring. The die is composed of a shaping mandrel, an end anti-rotation clamping assembly and a radial auxiliary locking hoop. When the spring is prepared, the depth of the spiral limiting groove on the shaping mandrel can be customized. The Ti-rich ternary TiNiCu alloy wire is taken as an object, 20%-50% cold deformation is applied to the wire in advance to introduce high-density dislocations and refine grains, the wire is wound on a special constraint aging forming die, constraint aging treatment is carried out at a temperature of 350 DEG C-550 DEG C for 10-60 minutes, and the target spring is obtained after cooling and rotating demolding. By using the die, the shaping is simple, and stable driving characteristics can be obtained without subsequent cycle training, so that the preparation process of the TiNiCu alloy spring is simplified. Through the synergistic effect of component design, controllable cold deformation and constraint aging, the TiNiCu alloy spring prepared by the application has large driving displacement and high cycle stability, and is especially suitable for application scenarios of long service life, high load and precise driving.

The invention relates to the technical field of material surface treatment, and discloses a metal surface composite coating process and a metal surface composite coating part. According to the metal surface composite coating process, the metal surface is subjected to the steps of pretreatment, nickel pre-plating, copper plating, ternary alloy plating, silver pre-plating, silver plating, nickel plating, nickel plating again, mask positioning, pretreatment again, local gold plating, post-treatment and the like, the appearance of a prepared metal surface composite coating part is qualified, the total coating thickness is 9.3-12 m, and the thickness of the metal surface composite coating is 0.5-1.5 mm. And the thickness of the eighth gold plating layer is 0.76-1.1 m, the binding force of the metal surface composite coating component reaches the 0-level or 1-level level, and after a corrosion resistance test, the surface is not corroded, so that the requirements of good binding force on the metal surface composite coating component, relatively high corrosion resistance in an extreme environment and the like in the application fields of electronics, aerospace and the like are met.

The application relates to the technical field of heat exchange equipment, in particular to a memory alloy frost suppression piece, a preparation method thereof and a finned tube heat exchanger applying the same. The memory alloy frost suppression piece adopts a Ti-Ni-Sn ternary alloy material, and the atomic percentage components are as follows: Ti is 51at.%-53at.%, Ni is 42at.%-46at.% and Sn is 3at.%-5at.%. The finned tube heat exchanger comprises a heat exchange tube group and a frost suppression assembly comprising the memory alloy frost suppression piece; a plurality of heat exchange fins of the heat exchange tube group are sleeved on the outer periphery of a heat exchange coil in the axial direction of the heat exchange coil, and heat exchange gaps are formed between adjacent heat exchange fins; the memory alloy frost suppression piece is spirally wound around the finned tube heat exchanger in the axial direction of the heat exchange coil, the memory alloy frost suppression piece is arranged in the heat exchange gap of the heat exchange coil and has a ventilation gap between adjacent heat exchange fins. The memory alloy frost suppression piece can cover the heat exchange area through phase change deformation and vibration, thereby realizing frost suppression. Through the application of the memory alloy frost suppression piece, the finned tube heat exchanger has an energy-saving effect.

The application relates to a preparation method of a ternary alloy nanoflower and an organic hybrid composite film thereof, and belongs to the technical field of nanometer materials and functional films. BiCl3, SbCl3 and TeO2 are dissolved in ethylene glycol, NaOH and PVP K30 are added, stirring is carried out at room temperature until a clear solution is obtained, the solution is transferred to a reaction kettle, and reaction is carried out in a blast drying oven; after cooling, centrifugal washing is carried out; after drying, a Bi-Sb-Te alloy nanoflower is obtained; the Bi-Sb-Te alloy nanoflower is mixed with a PEDOT:PSS aqueous solution; a conductive enhancer is added, ultrasonic dispersion is carried out to form a uniform slurry; the slurry is deposited on the surface of a glass substrate by using a drying machine through a flow casting method; after annealing, the film is peeled off, vacuum drying is carried out, and a flexible thermoelectric composite film is formed. Through the establishment of a trinity technology of "nanoflower morphology design-in-situ interface optimization-low temperature solution process", the problems of poor flexibility of traditional thermoelectric materials, nanocomposite interface failure and unsustainable high-temperature process are solved.

The application discloses a preparation process of a high-performance Cu-Ni-Fe alloy based on first-principle calculation design, and relates to the technical field of alloy material preparation. The process constructs a precise Cu-Ni-Fe ternary alloy thermodynamic database by combining a first principle with a CALPHAD method, determines a composition range based on database calculation of a multivariate phase diagram, optimizes the composition by calculating a work function, an elastic constant and a thermal expansion coefficient through a first principle, and obtains a finished product through smelting, heat treatment and forming processing. The final alloy has an atomic percentage composition of Cu 30%-75%, Ni 10%-30% and Fe 10%-30%, a tensile strength of greater than or equal to 816.4 MPa, a total elongation at break of greater than or equal to 34.27%, and a thermal expansion coefficient of less than 20*10 ‑6 / K, and has excellent mechanical properties and thermal stability, thereby solving the problems of blind composition design and large performance fluctuation of a traditional process and being suitable for multiple fields such as ocean engineering and electronic packaging.

The invention relates to the technical field of soldering tin materials, in particular to soldering tin alloy, soldering paste, a preparation method of the soldering paste, soldering flux and a soldering structural part, and aims to solve the problems that low-temperature soldering materials are poor in soldering firmness, fragile in soldering spots, poor in soldering performance compared with high-temperature soldering materials, poor in reliability and the like in the prior art. The soldering tin alloy is a ternary alloy material of In, Sn and Bi, and in the ternary alloy material, the mass ratio of In is 40%-60%, the mass ratio of Sn is 20%-40%, and the balance is Bi.

This invention relates to the field of electrochemical catalytic materials technology, and discloses a high-performance electrode catalytic material and its preparation method. The material has a hierarchical porous core-shell structure, composed of a Cu-Ni-Co ternary alloy core, an N-S-P co-doped carbon transition layer, and an Fe-Mn dual-doped oxide shell in a specific ratio. The preparation employs a stepwise hydrothermal-calcination method, which is mild, environmentally friendly, and easily scalable. This material is adaptable to acidic and alkaline electrolysis environments and exhibits excellent HER, OER, and [other properties not specified in the original text]. CO2 Reduction catalytic activity, C2+ With a Faraday efficiency of ≥85.3% and an activity decay of ≤4.2% after 1000 hours of continuous catalysis, it is low in cost, highly stable, and suitable for various scenarios such as water electrolysis for hydrogen production and fuel cells, showing great potential for industrial application.

Quantum dots, photovoltaic devices incorporating quantum dots, and methods of manufacturing the same are described herein.

The invention relates to the technical field of batteries, in particular to a negative electrode material, a preparation method thereof and a secondary battery. The invention provides a negative electrode material, the negative electrode material is a silicon-based alloy, and the silicon-based alloy comprises silicon, magnesium and indium; in the silicon-based alloy, the mass ratio of the magnesium to the indium is (0.5 to 1.5): (0.5 to 1.5); in the silicon-based alloy, the mass ratio of the magnesium is 8%-25%; the mass ratio of the indium is 8%-25%. According to the negative electrode material, the preparation method thereof and the secondary battery, magnesium and indium are introduced for a silicon-based negative electrode to prepare a ternary alloy, the electronic conductivity can be improved and the silicon expansion rate can be reduced while magnesium and indium metal elements are introduced, and the magnesium and indium metal with high conductivity not only improves the rate capability of the battery, but also enhances the cycling stability of the battery.

This invention belongs to the field of metallic materials, specifically relating to a welded steel plate with an aluminum-silicon coating and its preparation method. Based on a chromium-nickel-manganese ternary alloying approach, this invention eliminates the need for pre-welding coating removal or reducing the total amount of aluminum-silicon coating entering the weld seam through beveling. High-performance aluminum-silicon coated hot-formed steel welded joints can be obtained using conventional laser filler wire welding. Currently available welding wires are mainly composed of austenitic stabilizing elements, while this invention innovatively designs the welding wire composition system. The welding wire is designed using a composite of non-austenitic stabilizing elements chromium, nickel, and manganese in a specific ratio, and the chromium-nickel equivalent ratio of the welding wire is controlled to achieve full martensiticization of the weld microstructure. The purpose of this invention is to obtain welded joints reaching the level of the base material in a low-cost and high-efficiency manner, which is of great significance to the development of laser welding technology for aluminum-silicon coated steel.

This application provides a positive electrode active material, which includes a matrix material and a coating layer located on the surface of the matrix material, wherein the chemical formula of the matrix material is LiNi. x Co y Mn z M a M′ b O2, M = at least one of Zr, Y, Al, Ti, W, Sr, Ta, Sb, Nb, Na, K, Ca, or Ce, M′ = at least one of N, F, S, or Cl, 0.80 ≤ x ≤ 1.0, 0 ≤ y ≤ 0.20, 0 ≤ z ≤ 0.02, 0 ≤ a ≤ 0.02, b = 1 - x - y - z - a, wherein the coating layer is a boron-containing ternary alloy or a boron-containing ternary alloy oxide. The positive electrode active material of this application has high compaction density, improved high-temperature storage performance, and safety performance. This application also provides a method for preparing the positive electrode active material, as well as a positive electrode sheet containing the positive electrode active material, a secondary battery, a battery module, a battery pack, and an electrical device.

The present application relates to the technical field of nanosynthesis and fuel cell, and provides a raspberry structure Pt-Pd-Cu ternary alloy nanocatalyst, a preparation method and application thereof, and belongs to the technical field of nanomaterial synthesis and fuel cell. A raspberry structure Pt-Pd-Cu ternary alloy nanomaterial is successfully synthesized by simultaneously reducing three metal precursors of platinum, palladium and copper with ascorbic acid and adding a structure directing agent by a one-pot method. The nanomaterial surface presents a unique raspberry structure, and a large number of convex structures are distributed on the surface, which significantly improves the specific surface area and exposes a large number of catalytic active sites. By introducing an appropriate amount of palladium into platinum, the obtained nanomaterial exhibits good catalytic performance in both acidic and alkaline media. The addition of copper not only effectively reduces the amount of noble metal platinum and lowers the cost of the catalyst, but also provides a large number of active hydroxyl radicals, which promotes the rapid oxidation of the reaction intermediate COads to CO2, thereby effectively preventing the poisoning of the platinum active site.

The application discloses a liquid metal-graphene material capable of preventing leakage, and preparation raw materials comprise a NaOH solution, a sponge, graphene sheets and a liquid metal. The liquid metal is a gallium-indium-tin ternary alloy liquid metal, and the liquid metal is subjected to high-speed stirring in an air environment to generate a part of oxidized paste-shaped liquid metal, so that the surface tension is reduced, and the liquid metal can be well attached to the sponge. The material has a simple manufacturing method, and the obtained elastic high-thermal-conductivity porous material not only avoids leakage of the liquid metal, but also helps to increase the thermal conductivity of the overall material.

This invention discloses a manufacturing process and application of a two-way shape memory alloy wire for interventional adjustable guidewires, relating to the field of medical device material preparation technology. The manufacturing method includes Ni-Ti-Nb ternary alloy proportioning, vacuum melting, die forging and hot rolling, multi-pass cold drawing combined with intermediate annealing, solution treatment and constrained aging, and thermomechanical cycle training to produce a two-way shape memory alloy wire with a diameter of φ0.2-0.8mm. This wire can achieve 180° bending upon heating and straightening upon cooling. Finally, the trained alloy wire is integrated with a guidewire and coated with a hydrophilic coating. The alloy wire prepared by this process has a high shape recovery rate, a phase transformation temperature suitable for the human body (37~45℃), and can achieve reversible bending deformation from 0 to 180°. It also possesses excellent flexibility, fatigue resistance, and biocompatibility. This adjustable guidewire is suitable for interventional surgeries in vascular and urinary systems.

This application discloses an antioxidant solder bar and its preparation method, relating to the field of solder materials. Antioxidant solder bars include Sn-Ag-Cu alloy, Bi, Ge, P, and Sn-Be-Sb ternary alloy. In the Sn-Ag-Cu alloy, Sn accounts for 96.5-98.5% by weight, Ag accounts for 1-1.5% by weight, and copper accounts for 0.5-2% by weight. The Bi content is 0.01-0.05% of the Sn-Ag-Cu alloy, the Ge content is 0.01-0.06% of the Sn-Ag-Cu alloy, and the P content is 0.05-0.1% of the Sn-Ag-Cu alloy. The Sn-Be-Sb ternary alloy has a content of 1.2-1.8% of the Sn-Ag-Cu alloy. In the Sn-Be-Sb ternary alloy, Be accounts for 4.8-5.6% by weight, Sb accounts for 2.5-3.8% by weight, and Sn is the balance. The anti-oxidation solder bar of this application has the advantages of good anti-oxidation properties, good spreadability, and high tensile strength.

This invention discloses a method for constructing the potential function of a Ni-Co-Cr ternary alloy and modeling initial irradiation damage. Specifically, this invention provides a method for constructing the potential function of a Ni-Co-Cr ternary alloy, as well as an integrated method and system for potential function construction and initial irradiation damage modeling. The hybrid potential function constructed by this invention can effectively solve the problems of inaccurate short-range repulsion description and poor energy conservation due to the non-smooth connection with the medium-range potential energy in existing Ni-Co-Cr medium-entropy alloy potential functions when simulating primary collision events under irradiation. In addition, the integrated method and system developed by this invention can achieve integrated high-precision modeling, significantly improving the physical realism and numerical stability of the simulation. All parameters can be flexibly adjusted, facilitating the systematic study of the structure-property relationship between composition, energy, and irradiation damage effects.

The invention discloses a physical simulation device and method for a wide slab continuous casting crystallizer, and relates to the field of physical simulation. The interior of the crystallizer is filled with a GaInSn ternary alloy and a silicone oil covering slag layer; and the auxiliary equipment is used for introducing air into the crystallizer and adjusting the internal temperature of the crystallizer so as to simulate the flowing and bubble behaviors of molten steel. According to the invention, the GaInSn ternary alloy in a liquid state at room temperature is adopted as an experimental medium, and the controllable physical simulation device is established by combining the silicone oil simulation casting powder layer, so that the physical similarity and experimental safety of the simulation device are remarkably improved; and the influence of key phenomena such as molten steel flowing, bubble floating and a casting powder layer in the wide slab continuous casting crystallizer on the casting blank quality can be systematically and quantitatively studied.

The invention provides an Al-Cu-Zr ternary alloy material, the Al-Cu-Zr ternary alloy material comprises Al, Cu and Zr, and the atomic ratio of the Al to the Cu to the Zr is as follows: Al: Cu: Zr = (60-88): (5-20): (2-25). The invention also provides a method for preparing the Al-Cu-Zr ternary alloy material, which comprises the following steps: (1) mixing the metal elements according to the weight ratio to obtain a mixed raw material, and smelting the mixed raw material into an alloy ingot; and (2) the alloy ingot is subjected to melt-spinning rapid quenching, and the Al-Cu-Zr ternary alloy material is obtained. The Al-Cu-Zr ternary alloy material disclosed by the invention has excellent mechanical strength.

A spark plug electrode made of a ruthenium-based material having one or more of the following properties: an equiaxed grain structure, a grain structure having an average grain size of less than or equal to 50 [mu] m, a grain structure having an average porosity of less than or equal to 2%, and / or a grain structure having an average non-uniformity ratio of less than or equal to 6%. In one example, the ruthenium-based material is a binary alloy comprising, by weight, from 1% to 15% of rhodium and the balance ruthenium. In various examples, the ruthenium-based material is a ternary alloy that includes from 1 wt% to 15 wt%, including an end value, rhodium, from 0.5 wt% to 5 wt%, including an end value, rhenium, and a balance of ruthenium. The invention further provides a powder metallurgy method for manufacturing the spark plug electrode.

This application relates to the field of metal material processing technology, and discloses a titanium-steel composite plate, its preparation method, and a ship. The titanium-steel composite plate includes a steel substrate layer, a pure titanium cladding layer, and an alloy layer, wherein the alloy layer is disposed between the steel substrate layer and the pure titanium cladding layer; wherein the alloy layer includes a Fe-intermediate element-Ti ternary alloy layer, and the Fe-intermediate element-Ti ternary alloy layer satisfies the following conditions along the direction from the steel substrate layer to the pure titanium cladding layer: the Fe content gradually decreases, the Ti content gradually increases, and the content of the intermediate element first gradually increases and then gradually decreases; the intermediate element is a transition element in the Fe-Ti system. This composite plate exhibits excellent interface quality, as well as excellent structural stability and corrosion resistance.

The application provides a preparation method of a PtRuLa ternary alloy catalyst, comprising the following steps: S1, adding RuCl3 and LaCl3 into deionized water to obtain a mixed solution; S2, respectively adding a platinum precursor and a metal protective agent into deionized water to uniformly disperse, to form a platinum precursor solution and a metal protective agent solution; S3, adding the mixed solution into the platinum precursor solution, then adding the metal protective agent solution after stirring, to obtain a mixed solution; S4, adding a reducing alcohol into the mixed solution, adjusting the pH value to be alkaline by using a lye, heating and reacting, cooling and adding acid to stand, discarding supernatant to obtain a product; and S5, washing and drying the product, and finally calcining the solid to obtain the PtRuLa ternary alloy catalyst. By doping La in the PtRu alloy catalyst, the surface energy of the catalyst can be reduced, the electronic structure of the PtRu alloy is adjusted, and in addition, La can inhibit the growth of Pt nanoparticles, and the activity and stability of the PtRuLa catalyst are increased.

The invention provides a hollow PtAgS nanocrystalline material as well as a preparation method and application thereof, and belongs to the technical field of synthesis of nano materials. A simple two-step hydrothermal method is adopted, firstly, a gel precursor is synthesized to serve as a self-sacrifice template, then a platinum source, a silver source, a sulfur source and the template are subjected to a hydrothermal reaction together, and the hollow PtAgS nanocrystal is obtained. According to the preparation method disclosed by the invention, platinum and silver atoms are induced to diffuse outwards from a sulfur-containing core by utilizing twin crystal defects formed in the initial stage of reaction, so that a hollow structure is formed; the process is simple and efficient, the product is pure, the structure is uniform and controllable, and the prepared hollow PtAgS nanocrystal is a ternary alloy nanocrystal with a uniform hollow structure, has twin crystal defects, shows excellent soft magnetic properties including high saturation magnetization and low coercive force, is particularly suitable for high-frequency and low-loss magnetic devices, and has wide application prospects. Such as miniaturized electronic components and magnetic sensors, and has a wide industrial application prospect.

Disclosed is a manufacturing method for a ternary alloy material comprising nickel, carbon, and graphene. The manufacturing method for the corresponding material is as follows: A conductive material is subjected to the steps of ultrasonic cleaning, sulfuric acid activation, and washing, and then is put into a nickel-carbon-graphene alloy electrolyte to start electrolysis, followed by washing with pure water and drying. Afterwards, through a high-temperature heating conductive carbonization treatment,a ternary alloy material comprising nickel, carbon, and graphene, of 50-100 micrometers is obtained. The ternary alloy material of the present invention is mainly applied to high-quality electromagnetic shielding and absorbing materials and to the reduction of electric arc generation of a large contact terminal, and a product manufactured by the process of the present invention has excellent electromagnetic shielding and absorbance performance and heat dissipation performance, and thus the performance of the product may be improved in a well-balanced manner.